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ArabidopsismRNA export factor MOS11: molecular interactions and role in abiotic stress responses New Phytol. (IF 9.4) Pub Date : 2024-04-23 Amelie Rödel, Ina Weig, Sophie Tiedemann, Uwe Schwartz, Gernot Längst, Christoph Moehle, Marion Grasser, Klaus D. Grasser
Summary Transcription and export (TREX) is a multi‐subunit complex that links synthesis, processing and export of mRNAs. It interacts with the RNA helicase UAP56 and export factors such as MOS11 and ALYs to facilitate nucleocytosolic transport of mRNAs. Plant MOS11 is a conserved, but sparsely researched RNA‐binding export factor, related to yeast Tho1 and mammalian CIP29/SARNP. Using biochemical approaches
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Some fall to sleep slowly: cell biophysics and metabolism of quiescence in diatom resting cells New Phytol. (IF 9.4) Pub Date : 2024-04-23 Peter von Dassow
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Genome‐wide association study and network analysis of in vitro transformation in Populus trichocarpa support key roles of diverse phytohormone pathways and cross talk New Phytol. (IF 9.4) Pub Date : 2024-04-23 Michael F. Nagle, Jialin Yuan, Damanpreet Kaur, Cathleen Ma, Ekaterina Peremyslova, Yuan Jiang, Greg S. Goralogia, Anna Magnuson, Jia Yi Li, Wellington Muchero, Li Fuxin, Steven H. Strauss
Summary Wide variation in amenability to transformation and regeneration (TR) among many plant species and genotypes presents a challenge to the use of genetic engineering in research and breeding. To help understand the causes of this variation, we performed association mapping and network analysis using a population of 1204 wild trees of Populus trichocarpa (black cottonwood). To enable precise and
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Tree water uptake patterns across the globe New Phytol. (IF 9.4) Pub Date : 2024-04-23 Christoph Bachofen, Shersingh Joseph Tumber‐Dávila, D. Scott Mackay, Nate G. McDowell, Andrea Carminati, Tamir Klein, Benjamin D. Stocker, Maurizio Mencuccini, Charlotte Grossiord
SummaryPlant water uptake from the soil is a crucial element of the global hydrological cycle and essential for vegetation drought resilience. Yet, knowledge of how the distribution of water uptake depth (WUD) varies across species, climates, and seasons is scarce relative to our knowledge of aboveground plant functions. With a global literature review, we found that average WUD varied more among biomes
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MicroRNA164e suppresses NAC100 transcription factor‐mediated synthesis of seed storage proteins in chickpea New Phytol. (IF 9.4) Pub Date : 2024-04-23 Anirban Chakraborty, Baljinder Singh, Vimal Pandey, Swarup K. Parida, Sabhyata Bhatia
Summary Development of protein‐enriched chickpea varieties necessitates an understanding of specific genes and key regulatory circuits that govern the synthesis of seed storage proteins (SSPs). Here, we demonstrated the novel involvement of Ca‐miR164e‐CaNAC100 in regulating SSP synthesis in chickpea. Ca‐miRNA164e was significantly decreased during seed maturation, especially in high‐protein accessions
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Large dataset analyses advance knowledge of seed ecology and evolutionary biology New Phytol. (IF 9.4) Pub Date : 2024-04-22 Sergey Rosbakh, Angelino Carta, Eduardo Fernández‐Pascual, Shyam S. Phartyal, Roberta L. C. Dayrell, Efisio Mattana, Arne Saatkamp, Filip Vandelook, Jerry M. Baskin, Carol C. Baskin
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The need for mechanistic explanations in (seed) ecology New Phytol. (IF 9.4) Pub Date : 2024-04-22 Juli G. Pausas, Byron B. Lamont, Jon E. Keeley, William J. Bond
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Carbon budget at the individual‐tree scale: dominant Eucalyptus trees partition less carbon belowground New Phytol. (IF 9.4) Pub Date : 2024-04-20 Ezequiel Fernandez‐Tschieder, John D. Marshall, Dan Binkley
Summary Large trees in plantations generally produce more wood per unit of resource use than small trees. Two processes may account for this pattern: greater photosynthetic resource use efficiency or greater partitioning of carbon to wood production. We estimated gross primary production (GPP) at the individual scale by combining transpiration with photosynthetic water‐use efficiency of Eucalyptus
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Negative allometry of leaf xylem conduit diameter and double‐wall thickness: implications for implosion safety New Phytol. (IF 9.4) Pub Date : 2024-04-20 Ilaine Silveira Matos, Samantha McDonough, Breanna Carrillo Johnson, Diana Kalantar, James Rohde, Roshni Sahu, Joyce Wang, Adrian Fontao, Jason To, Sonoma Carlos, Lisa Garcia, Mickey Boakye, Holly Forbes, Benjamin Wong Blonder
Summary Xylem conduits have lignified walls to resist crushing pressures. The thicker the double‐wall (T) relative to its diameter (D), the greater the implosion safety. Having safer conduits may incur higher costs and reduced flow, while having less resistant xylem may lead to catastrophic collapse under drought. Although recent studies have shown that conduit implosion commonly occurs in leaves,
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Sequential activation of strigolactone and salicylate biosynthesis promotes leaf senescence New Phytol. (IF 9.4) Pub Date : 2024-04-20 Yexing Jing, Ziyi Yang, Zongju Yang, Wanqing Bai, Ruizhen Yang, Yanjun Zhang, Kewei Zhang, Yunwei Zhang, Jiaqiang Sun
Summary Leaf senescence is a complex process strictly regulated by various external and endogenous factors. However, the key signaling pathway mediating leaf senescence remains unknown. Here, we show that Arabidopsis SPX1/2 negatively regulate leaf senescence genetically downstream of the strigolactone (SL) pathway. We demonstrate that the SL receptor AtD14 and MAX2 mediate the age‐dependent degradation
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Legacy effects of premature defoliation in response to an extreme drought event modulate phytochemical profiles with subtle consequences for leaf herbivory in European beech New Phytol. (IF 9.4) Pub Date : 2024-04-20 Michael Eisenring, Arthur Gessler, Esther R. Frei, Gaétan Glauser, Bernd Kammerer, Maurice Moor, Anouchka Perret‐Gentil, Thomas Wohlgemuth, Martin M. Gossner
Summary Extreme droughts can have long‐lasting effects on forest community dynamics and species interactions. Yet, our understanding of how drought legacy modulates ecological relationships is just unfolding. We tested the hypothesis that leaf chemistry and herbivory show long‐term responses to premature defoliation caused by an extreme drought event in European beech (Fagus sylvatica L.). For two
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FLOURY ENDOSPERM24, a heat shock protein 101 (HSP101), is required for starch biosynthesis and endosperm development in rice New Phytol. (IF 9.4) Pub Date : 2024-04-18 Hongming Wu, Yulong Ren, Hui Dong, Chen Xie, Lei Zhao, Xin Wang, Fulin Zhang, Binglei Zhang, Xiaokang Jiang, Yunshuai Huang, Ruonan Jing, Jian Wang, Rong Miao, Xiuhao Bao, Mingzhou Yu, Thanhliem Nguyen, Changling Mou, Yunlong Wang, Yihua Wang, Cailin Lei, Zhijun Cheng, Ling Jiang, Jianmin Wan
Summary Endosperm is the main storage organ in cereal grain and determines grain yield and quality. The molecular mechanisms of heat shock proteins in regulating starch biosynthesis and endosperm development remain obscure. Here, we report a rice floury endosperm mutant flo24 that develops abnormal starch grains in the central starchy endosperm cells. Map‐based cloning and complementation test showed
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Harnessing photosynthetic C18O16O discrimination dynamics under leaf water nonsteady state to estimate mesophyll conductance: a new, regression‐based method New Phytol. (IF 9.4) Pub Date : 2024-04-18 Sen Rao, Tao Liu, Lucas A. Cernusak, Xin Song
Summary Mesophyll conductance (gm) is a crucial plant trait that can significantly limit photosynthesis. Measurement of photosynthetic C18O16O discrimination (Δ18O) has proved to be the only viable means of resolving gm in both C3 and C4 plants. However, the currently available methods to exploit Δ18O for gm estimation are error prone due to their inadequacy in constraining the degree of oxygen isotope
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High floral disparity without pollinator shifts in buzz‐bee‐pollinated Melastomataceae New Phytol. (IF 9.4) Pub Date : 2024-04-18 Constantin Kopper, Jürg Schönenberger, Agnes S. Dellinger
Summary Shifts among functional pollinator groups are commonly regarded as sources of floral morphological diversity (disparity) through the formation of distinct pollination syndromes. While pollination syndromes may be used for predicting pollinators, their predictive accuracy remains debated, and they are rarely used to test whether floral disparity is indeed associated with pollinator shifts. We
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Positional cloning and characterization reveal the role of TaSRN‐3D and TaBSR1 in the regulation of seminal root number in wheat New Phytol. (IF 9.4) Pub Date : 2024-04-17 Zhaoyan Chen, Xuanshuang Li, Fei He, Bin Liu, Weiya Xu, Lingling Chai, Xuejiao Cheng, Long Song, Weilong Guo, Zhaorong Hu, Zhenqi Su, Jie Liu, Mingming Xin, Huiru Peng, Yingyin Yao, Qixin Sun, Jiewen Xing, Zhongfu Ni
Summary Seminal roots play a critical role in water and nutrient absorption, particularly in the early developmental stages of wheat. However, the genes responsible for controlling SRN in wheat remain largely unknown. Genetic mapping and functional analyses identified a candidate gene (TraesCS3D01G137200, TaSRN‐3D) encoding a Ser/Thr kinase glycogen synthase kinase 3 (STKc_GSK3) that regulated SRN
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Isotopically nonstationary metabolic flux analysis of plants: recent progress and future opportunities New Phytol. (IF 9.4) Pub Date : 2024-04-17 Somnath Koley, Poonam Jyoti, Maneesh Lingwan, Doug K. Allen
SummaryMetabolic flux analysis (MFA) is a valuable tool for quantifying cellular phenotypes and to guide plant metabolic engineering. By introducing stable isotopic tracers and employing mathematical models, MFA can quantify the rates of metabolic reactions through biochemical pathways. Recent applications of isotopically nonstationary MFA (INST‐MFA) to plants have elucidated nonintuitive metabolism
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CPK10 protein kinase regulates Arabidopsis tolerance to boron deficiency through phosphorylation and activation of BOR1 transporter New Phytol. (IF 9.4) Pub Date : 2024-04-16 Zhangqing Wang, Yanting Zhang, Yaru Wu, Duoduo Lai, Yuan Deng, Chuanfeng Ju, Lv Sun, Panpan Huang, Cun Wang
Summary Boron (B) is crucial for plant growth and development. B deficiency can impair numerous physiological and metabolic processes, particularly in root development and pollen germination, seriously impeding crop growth and yield. However, the molecular mechanism underlying boron signal perception and signal transduction is rather limited. In this study, we discovered that CPK10, a calcium‐dependent
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Litchi aspartic protease LcAP1 enhances plant resistance via suppressing cell death triggered by the pectate lyase PlPeL8 from Peronophythora litchii New Phytol. (IF 9.4) Pub Date : 2024-04-16 Wen Li, Peng Li, Yizhen Deng, Zijing Zhang, Junjian Situ, Ji Huang, Minhui Li, Pinggen Xi, Zide Jiang, Guanghui Kong
Summary Plant cell death is regulated in plant–pathogen interactions. While some aspartic proteases (APs) participate in regulating programmed cell death or defense responses, the defense functions of most APs remain largely unknown. Here, we report on a virulence factor, PlPeL8, which is a pectate lyase found in the hemibiotrophic pathogen Peronophythora litchii. Through in vivo and in vitro assays
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Guard cell and subsidiary cell sizes are key determinants for stomatal kinetics and drought adaptation in cereal crops New Phytol. (IF 9.4) Pub Date : 2024-04-16 Mengmeng Rui, Rongjia Chen, Yi Jing, Feibo Wu, Zhong‐Hua Chen, David Tissue, Hangjin Jiang, Yizhou Wang
Summary Climate change‐induced drought is a major threat to agriculture. C4 crops have a higher water use efficiency (WUE) and better adaptability to drought than C3 crops due to their smaller stomatal morphology and faster response. However, our understanding of stomatal behaviours in both C3 and C4 Poaceae crops is limited by knowledge gaps in physical traits of guard cell (GC) and subsidiary cell
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Parallel evolution of angiosperm‐like venation in Peltaspermales: a reinvestigation of Furcula New Phytol. (IF 9.4) Pub Date : 2024-04-16 Mario Coiro, Stephen McLoughlin, Margret Steinthorsdottir, Vivi Vajda, Dolev Fabrikant, Leyla J. Seyfullah
Summary Leaf venation is a pivotal trait in the success of vascular plants. Whereas gymnosperms have single or sparsely branched parallel veins, angiosperms developed a hierarchical structure of veins that form a complex reticulum. Its physiological consequences are considered to have enabled angiosperms to dominate terrestrial ecosystems in the Late Cretaceous and Cenozoic. Although a hierarchical‐reticulate
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Eco‐evolutionary insights into microbial litter decomposition New Phytol. (IF 9.4) Pub Date : 2024-04-16 Siya Shao, Benjamin N. Sulman
Accurate predictions of litter decomposition are fundamental to understanding soil carbon (C) cycling (Berg & McClaugherty, 2014). Although variable across plant species, a significant portion of organic compounds in litter consist of aromatic compounds such as lignin and polyphenols, which microbes decompose using specialized and resource-intensive enzymes. Aromatic compounds can also bind to other
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Decoupling cell size homeostasis in diatoms from the geometrical constraints of the silica cell wall New Phytol. (IF 9.4) Pub Date : 2024-04-16 Diede de Haan, Nahuel‐Hernán Ramos, Yu‐Feng Meng, Ron Rotkopf, Yoseph Addadi, Irit Rosenhek‐Goldian, Assaf Gal
Summary Unicellular organisms are known to exert tight control over their cell size. In the case of diatoms, abundant eukaryotic microalgae, two opposing notions are widely accepted. On the one hand, the rigid silica cell wall that forms inside the parental cell is thought to enforce geometrical reduction of the cell size. On the other hand, numerous exceptions cast doubt on the generality of this
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Lianas from lives to afterlives New Phytol. (IF 9.4) Pub Date : 2024-04-16 Gbadamassi G. O. Dossa, Shambhu Adhikari, Kun‐Fang Cao, Ya‐Jun Chen, Jean Evans Israel Codjia, Richard T. Corlett, Jinlong Dong, Ze‐Xin Fan, Pratibha Khatri, Mathieu Kiki, Hong‐Lin Li, Tial C. Ling, Guangyu Liu, Bartosz Marek Majcher, Nehrish Nisar, Denis M. Njoroge, Bismark Ofosu‐Bamfo, Steven Pearce, Mareike Roeder, Douglas A. Schaefer, Stefan A. Schnitzer, Chris M. Smith‐Martin, Wai Phyo Thu, Kyle
Tropical forests constitute the world's largest biomass carbon pool and are important global reservoirs of biodiversity, yet they are being increasingly degraded by anthropogenic activities. Evidence from American tropical forests suggests that forest disturbance and climate change result in increased liana abundance and biomass, but data are still lacking from African and Asian forests. An increasing
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Quantifying the production of plant pollen at the farm scale New Phytol. (IF 9.4) Pub Date : 2024-04-16 Ellen K. Wright, Thomas P. Timberlake, Mathilde Baude, Ian P. Vaughan, Jane Memmott
Summary Plant pollen is rich in protein, sterols and lipids, providing crucial nutrition for many pollinators. However, we know very little about the quantity, quality and timing of pollen availability in real landscapes, limiting our ability to improve food supply for pollinators. We quantify the floral longevity and pollen production of a whole plant community for the first time, enabling us to calculate
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Mycorrhizal fungi modify decomposition: a meta‐analysis New Phytol. (IF 9.4) Pub Date : 2024-04-12 Eduardo M. Choreño‐Parra, Kathleen K. Treseder
Summary It has been proposed that ectomycorrhizal fungi can reduce decomposition while arbuscular mycorrhizal fungi may enhance it. These phenomena are known as the ‘Gadgil effect’ and ‘priming effect’, respectively. However, it is unclear which one predominates globally. We evaluated whether mycorrhizal fungi decrease or increase decomposition, and identified conditions that mediate this effect. We
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Instantaneous Q10 of night‐time leaf respiratory CO2 efflux – measurement and analytical protocol considerations New Phytol. (IF 9.4) Pub Date : 2024-04-11 Dan Bruhn, Peter Povlsen, Anna Gardner, Lina M. Mercado
SummaryThe temperature sensitivity (e.g. Q10) of night‐time leaf respiratory CO2 efflux (RCO2) is a fundamental aspect of leaf physiology. The Q10 typically exhibits a dependence on measurement temperature, and it is speculated that this is due to temperature‐dependent shifts in the relative control of leaf RCO2. Two decades ago, a review hypothesized that this mechanistically caused change in values
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Root and shoot phenology, architecture, and organ properties: an integrated trait network among 44 herbaceous wetland species New Phytol. (IF 9.4) Pub Date : 2024-04-11 Ziqi Ye, Yanmei Mu, Shianne Van Duzen, Peter Ryser
Summary Integrating traits across above‐ and belowground organs offers comprehensive insights into plant ecology, but their various functions also increase model complexity. This study aimed to illuminate the interspecific pattern of whole‐plant trait correlations through a network lens, including a detailed analysis of the root system. Using a network algorithm that allows individual traits to belong
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An oligo peptide transporter family member, OsOPT7, mediates xylem unloading of Fe for its preferential distribution in rice New Phytol. (IF 9.4) Pub Date : 2024-04-11 Naoki Yamaji, Yuma Yoshioka, Sheng Huang, Takaaki Miyaji, Akimasa Sasaki, Jian Feng Ma
Summary Iron (Fe) needs to be delivered to different organs and tissues of above‐ground parts for playing its multiple physiological functions once it is taken up by the roots. However, the mechanisms underlying Fe distribution are poorly understood. We functionally characterized OsOPT7, a member of oligo peptide transporter family in terms of expression patterns, localization, transport activity and
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C‐TERMINAL DOMAIN PHOSPHATASE‐LIKE 3 contributes to GA‐mediated growth and flowering by interaction with DELLA proteins New Phytol. (IF 9.4) Pub Date : 2024-04-10 Ting Li, Yongqin Wang, Annelore Natran, Yi Zhang, Hao Wang, Kangxi Du, Peng Qin, Hua Yuan, Weilan Chen, Bin Tu, Dirk Inzé, Marieke Dubois
Summary Gibberellic acid (GA) plays a central role in many plant developmental processes and is crucial for crop improvement. DELLA proteins, the core suppressors in the GA signaling pathway, are degraded by GA via the 26S proteasomal pathway to release the GA response. However, little is known about the phosphorylation‐mediated regulation of DELLA proteins. In this study, we combined GA response assays
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Mycorrhizal type and tree diversity affect foliar elemental pools and stoichiometry New Phytol. (IF 9.4) Pub Date : 2024-04-10 Elisabeth Bönisch, Evgenia Blagodatskaya, Rodolfo Dirzo, Olga Ferlian, Andreas Fichtner, Yuanyuan Huang, Samuel J. Leonard, Fernando T. Maestre, Goddert von Oheimb, Tama Ray, Nico Eisenhauer
Summary Species‐specific differences in nutrient acquisition strategies allow for complementary use of resources among plants in mixtures, which may be further shaped by mycorrhizal associations. However, empirical evidence of this potential role of mycorrhizae is scarce, particularly for tree communities. We investigated the impact of tree species richness and mycorrhizal types, arbuscular mycorrhizal
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Integrating perspectives in developing mycorrhizal trait databases: a call for inclusive and collaborative continental efforts New Phytol. (IF 9.4) Pub Date : 2024-04-10 María Isabel Mujica, Patricia Silva‐Flores, C. Guillermo Bueno, Jessica Duchicela
SummaryGlobal assessments of mycorrhizal symbiosis present large sampling gaps in rich biodiversity regions. Filling these gaps is necessary to build large‐scale, unbiased mycorrhizal databases to obtain reliable analyses and prevent misleading generalizations. Underrepresented regions in mycorrhizal research are mainly in Africa, Asia, and South America. Despite the high biodiversity and endemism
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Is RNA editing truly absent in the complex thalloid liverworts (Marchantiopsida)? Evidence of extensive RNA editing from Cyathodium cavernarum New Phytol. (IF 9.4) Pub Date : 2024-04-08 Chao Shen, Hao Xu, Wen‐Zhuan Huang, Qiong Zhao, Rui‐Liang Zhu
Summary RNA editing is a crucial modification in plants' organellar transcripts that converts cytidine to uridine (C‐to‐U; and sometimes uridine to cytidine) in RNA molecules. This post‐transcriptional process is controlled by the PLS‐class protein with a DYW domain, which belongs to the pentatricopeptide repeat (PPR) protein family. RNA editing is widespread in land plants; however, complex thalloid
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ACL5 acquired strict thermospermine synthesis activity during the emergence of vascular plants New Phytol. (IF 9.4) Pub Date : 2024-04-08 Yoshihiro Takahashi
Summary Norspermine (Nspm), one of the uncommon polyamines (PAs), was detected in bryophytes and lycophytes; therefore, the aminopropyltransferases involved in the synthesis of Nspm were investigated. The enzymatic activity was evaluated by the transient high expression of various aminopropyltransferase genes in Nicotiana benthamiana, followed by quantification of PA distribution in the leaves using
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A WOX homolog disrupted by a transposon led to the loss of spines and contributed to the domestication of lettuce New Phytol. (IF 9.4) Pub Date : 2024-04-08 Peinan Sun, Huanran Yuan, Jiangpeng Pan, Zhihao Wu, Weibo Li, Xin Wang, Hanhui Kuang, Jiongjiong Chen
Summary The loss of spines is one of the most important domestication traits for lettuce (Lactuca sativa). However, the genetics and regulation of spine development in lettuce remain unclear. We examined the genetics of spines in lettuce using a segregating population derived from a cross between cultivated and wild lettuce (Lactuca serriola). A gene encoding WUSCHEL‐related homeobox transcription
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Activating plant immunity: the hidden dance of intracellular Ca2+ stores New Phytol. (IF 9.4) Pub Date : 2024-04-08 Qi Wang, Xiaoyan Cang, Haiqiao Yan, Zilu Zhang, Wei Li, Jinyu He, Meixiang Zhang, Laiqing Lou, Ran Wang, Ming Chang
SummaryCalcium ion (Ca2+) serves as a versatile and conserved second messenger in orchestrating immune responses. In plants, plasma membrane‐localized Ca2+‐permeable channels can be activated to induce Ca2+ influx from extracellular space to cytosol upon pathogen infection. Notably, different immune elicitors can induce dynamic Ca2+ signatures in the cytosol. During pattern‐triggered immunity, there
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Isoform‐resolved genome annotation enables mapping of tissue‐specific betalain regulation in amaranth New Phytol. (IF 9.4) Pub Date : 2024-04-08 Tom S. Winkler, Susanne K. Vollmer, Nadine Dyballa‐Rukes, Sabine Metzger, Markus G. Stetter
Summary Betalains are coloring pigments produced in some families of the order Caryophyllales, where they replace anthocyanins as coloring pigments. While the betalain pathway itself is well studied, the tissue‐specific regulation of the pathway remains mostly unknown. We enhance the high‐quality Amaranthus hypochondriacus reference genome and produce a substantially more complete genome annotation
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FIGL1 prevents aberrant chromosome associations and fragmentation and limits crossovers in polyploid wheat meiosis New Phytol. (IF 9.4) Pub Date : 2024-04-08 Kim Osman, Stuart D. Desjardins, James Simmonds, Amanda J. Burridge, Kostya Kanyuka, Ian R. Henderson, Keith J. Edwards, Cristobal Uauy, F. Chris H. Franklin, James D. Higgins, Eugenio Sanchez‐Moran
Summary Meiotic crossovers (COs) generate genetic diversity and are crucial for viable gamete production. Plant COs are typically limited to 1–3 per chromosome pair, constraining the development of improved varieties, which in wheat is exacerbated by an extreme distal localisation bias. Advances in wheat genomics and related technologies provide new opportunities to investigate, and possibly modify
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Dynamics and drivers of mycorrhizal fungi after glacier retreat New Phytol. (IF 9.4) Pub Date : 2024-04-06 Alexis Carteron, Isabel Cantera, Alessia Guerrieri, Silvio Marta, Aurélie Bonin, Roberto Ambrosini, Fabien Anthelme, Roberto Sergio Azzoni, Peter Almond, Pablo Alviz Gazitúa, Sophie Cauvy‐Fraunié, Jorge Luis Ceballos Lievano, Pritam Chand, Milap Chand Sharma, John J. Clague, Justiniano Alejo Cochachín Rapre, Chiara Compostella, Rolando Cruz Encarnación, Olivier Dangles, Andre Eger, Sergey Erokhin,
Summary The development of terrestrial ecosystems depends greatly on plant mutualists such as mycorrhizal fungi. The global retreat of glaciers exposes nutrient‐poor substrates in extreme environments and provides a unique opportunity to study early successions of mycorrhizal fungi by assessing their dynamics and drivers. We combined environmental DNA metabarcoding and measurements of local conditions
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Suillus: an emerging model for the study of ectomycorrhizal ecology and evolution New Phytol. (IF 9.4) Pub Date : 2024-04-06 Lotus Lofgren, Nhu H. Nguyen, Peter Kennedy, Eduardo Pérez‐Pazos, Jessica Fletcher, Hui‐Ling Liao, Haihua Wang, Kaile Zhang, Joske Ruytinx, Alexander H. Smith, Yi‐Hong Ke, H. Van T. Cotter, Eiona Engwall, Khalid M. Hameed, Rytas Vilgalys, Sara Branco
SummaryResearch on mycorrhizal symbiosis has been slowed by a lack of established study systems. To address this challenge, we have been developing Suillus, a widespread ecologically and economically relevant fungal genus primarily associated with the plant family Pinaceae, into a model system for studying ectomycorrhizal (ECM) associations. Over the last decade, we have compiled extensive genomic
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CPK1‐HSP90 phosphorylation and effector XopC2–HSP90 interaction underpin the antagonism during cassava defense‐pathogen infection New Phytol. (IF 9.4) Pub Date : 2024-04-06 Yunxie Wei, Binbin Zhu, Ye Zhang, Guowen Ma, Jingyuan Wu, Luzhi Tang, Haitao Shi
Summary Cassava is one of the most important tropical crops, but it is seriously affected by cassava bacteria blight (CBB) caused by the bacterial pathogen Xanthomonas phaseoli pv manihotis (Xam). So far, how pathogen Xam infects and how host cassava defends during pathogen–host interaction remains elusive, restricting the prevention and control of CBB. Here, the illustration of HEAT SHOCK PROTEIN
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Gap‐free X and Y chromosome assemblies of Salix arbutifolia reveal an evolutionary change from male to female heterogamety in willows, without a change in the position of the sex‐determining locus New Phytol. (IF 9.4) Pub Date : 2024-04-06 Yi Wang, Guang‐Nan Gong, Yuan Wang, Ren‐Gang Zhang, Elvira Hörandl, Zhi‐Xiang Zhang, Deborah Charlesworth, Li He
Summary In the Vetrix clade of Salix, a genus of woody flowering plants, sex determination involves chromosome 15, but an XY system has changed to a ZW system. We studied the detailed genetic changes involved. We used genome sequencing, with chromosome conformation capture (Hi‐C) and PacBio HiFi reads to assemble chromosome level gap‐free X and Y of Salix arbutifolia, and distinguished the haplotypes
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Opening Pandora's box of transport phenomena New Phytol. (IF 9.4) Pub Date : 2024-04-06 Timo Vesala
Heat transport by molecular diffusion is driven by temperature gradients. Mass transport by molecular diffusion is driven by concentration gradients. For years environmental plant physiologists have worked with this knowledge. However, transport phenomena are more complex. Temperature gradients also drive mass transport, as shown theoretically by Enskog (1911) and experimentally by Chapman & Dootson (1917)
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Designer oleosins boost oil accumulation in plant biomass New Phytol. (IF 9.4) Pub Date : 2024-04-06 Radin Sadre
Cytosolic triacylglycerols (TAGs) are the major neutral storage lipids in plants. These energy-rich molecules are especially abundant in seeds and oleaginous fruits, whereas in leaves, TAGs are typically low in abundance and represent < 1% of glycerolipids (Tjellström et al., 2015). Plant-derived TAGs (oil) are an important source of calories in human and animal diets, and they are suitable feedstocks
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Prezygotic mate selection is only partially correlated with the expression of NaS‐like RNases and affects offspring phenotypes New Phytol. (IF 9.4) Pub Date : 2024-04-06 Patrycja Baraniecka, Wibke Seibt, Karin Groten, Danny Kessler, Erica McGale, Klaus Gase, Ian T. Baldwin, John R. Pannell
Summary Nicotiana attenuata styles preferentially select pollen from among accessions with corresponding expression patterns of NaS‐like‐RNases (SLRs), and the postpollination ethylene burst (PPEB) is an accurate predictor of seed siring success. However, the ecological consequences of mate selection, its effect on the progeny, and the role of SLRs in the control of ethylene signaling remain unknown
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Effects of increasing atmospheric CO2 on leaf water δ18O values are small and are attenuated in grasses and amplified in dicotyledonous herbs and legumes when transferred to cellulose δ18O values New Phytol. (IF 9.4) Pub Date : 2024-04-05 Eva Morgner, Meisha Holloway‐Phillips, David Basler, Daniel B. Nelson, Ansgar Kahmen
Summary The oxygen isotope composition of cellulose (δ18O values) has been suggested to contain information on stomatal conductance (gs) responses to rising pCO2. The extent by which pCO2 affects leaf water and cellulose δ18O values (δ18OLW and δ18OC) and the isotope processes that determine pCO2 effects on δ18OLW and δ18OC are, however, unknown. We tested the effects of pCO2 on gs, δ18OLW and δ18OC
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Ethylene controls three‐dimensional growth involving reduced auxin levels in the moss Physcomitrium patens New Phytol. (IF 9.4) Pub Date : 2024-04-04 Yidong Wang, Lanlan Jiang, Dongdong Kong, Jie Meng, Meifang Song, Wenxiu Cui, Yaqi Song, Xiaofan Wang, Jiao Liu, Rui Wang, Yikun He, Caren Chang, Chuanli Ju
Summary The conquest of land by plants was concomitant with, and possibly enabled by, the evolution of three‐dimensional (3D) growth. The moss Physcomitrium patens provides a model system for elucidating molecular mechanisms in the initiation of 3D growth. Here, we investigate whether the phytohormone ethylene, which is believed to have been a signal before land plant emergence, plays a role in 3D
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Exploring the role of biotic factors in regulating the spatial variability in land surface phenology across four temperate forest sites New Phytol. (IF 9.4) Pub Date : 2024-04-04 Yingyi Zhao, Zhihui Wang, Zhengbing Yan, Minkyu Moon, Dedi Yang, Lin Meng, Solveig Franziska Bucher, Jing Wang, Guangqin Song, Zhengfei Guo, Yanjun Su, Jin Wu
Summary Land surface phenology (LSP), the characterization of plant phenology with satellite data, is essential for understanding the effects of climate change on ecosystem functions. Considerable LSP variation is observed within local landscapes, and the role of biotic factors in regulating such variation remains underexplored. In this study, we selected four National Ecological Observatory Network
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Methylated chalcones are required for rhizobial nod gene induction in the Medicago truncatula rhizosphere New Phytol. (IF 9.4) Pub Date : 2024-04-04 Wenjuan Wu, Yuxin Zhuang, Dasong Chen, Yiting Ruan, Fuyu Li, Kirsty Jackson, Cheng‐Wu Liu, Alison East, Jiangqi Wen, Evangelos Tatsis, Philip S. Poole, Ping Xu, Jeremy D. Murray
Summary Legume nodulation requires the detection of flavonoids in the rhizosphere by rhizobia to activate their production of Nod factor countersignals. Here we investigated the flavonoids involved in nodulation of Medicago truncatula. We biochemically characterized five flavonoid‐O‐methyltransferases (OMTs) and a lux‐based nod gene reporter was used to investigate the response of Sinorhizobium medicae
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The oxidative pentose phosphate pathway in photosynthesis: a tale of two shunts New Phytol. (IF 9.4) Pub Date : 2024-04-03 Yuan Xu, Stephanie C. Schmiege, Thomas D. Sharkey
Summary CO2 release in the light (RL) and its presumed source, oxidative pentose phosphate pathways, were found to be insensitive to CO2 concentration. The oxidative pentose phosphate pathways form glucose 6‐phosphate (G6P) shunts that bypass the nonoxidative pentose phosphate reactions of the Calvin–Benson cycle. Using adenosine diphosphate glucose and uridine diphosphate glucose as proxies for labeling
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Global field collection data confirm an affinity of brown rot fungi for coniferous habitats and substrates New Phytol. (IF 9.4) Pub Date : 2024-04-03 Hunter J. Simpson, Carrie Andrew, Inger Skrede, Håvard Kauserud, Jonathan S. Schilling
Summary Unlike ‘white rot’ (WR) wood‐decomposing fungi that remove lignin to access cellulosic sugars, ‘brown rot’ (BR) fungi selectively extract sugars and leave lignin behind. The relative frequency and distribution of these fungal types (decay modes) have not been thoroughly assessed at a global scale; thus, the fate of one‐third of Earth's aboveground carbon, wood lignin, remains unclear. Using
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The plastid‐localized lipoamide dehydrogenase 1 is crucial for redox homeostasis, tolerance to arsenic stress and fatty acid biosynthesis in rice New Phytol. (IF 9.4) Pub Date : 2024-04-02 Ting‐Ting Chen, Peng Zhao, Yuan Wang, Han‐Qing Wang, Zhu Tang, Han Hu, Yu Liu, Ji‐Ming Xu, Chuan‐Zao Mao, Fang‐Jie Zhao, Zhong‐Chang Wu
Summary Soil contamination with arsenic (As) can cause phytotoxicity and reduce crop yield. The mechanisms of As toxicity and tolerance are not fully understood. In this study, we used a forward genetics approach to isolate a rice mutant, ahs1, that exhibits hypersensitivity to both arsenate and arsenite. Through genomic resequencing and complementation tests, we identified OsLPD1 as the causal gene
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Ecological drivers of flower–leaf sequences: aridity and proxies for pollinator attraction select for flowering‐first in the American plums New Phytol. (IF 9.4) Pub Date : 2024-04-02 D. M. Buonaiuto, T. J. Davies, S. C. Collins, E. M. Wolkovich
Summary Across temperate forests, many tree species produce flowers before their leaves emerge. This flower–leaf phenological sequence, known as hysteranthy, is generally described as an adaptation for wind pollination. However, this explanation does not address why hysteranthy is also common in biotically pollinated taxa. We quantified flower–leaf sequence variation in the American plums (Prunus,
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Interaction of ubiquitin‐like protein SILENCING DEFECTIVE 2 with LIKE HETEROCHROMATIN PROTEIN 1 is required for regulation of anthocyanin biosynthesis in Arabidopsis thaliana in response to sucrose New Phytol. (IF 9.4) Pub Date : 2024-04-01 Zhiyi Zhang, Chengcheng Liang, Yulong Ren, Zhaojun Lv, Jirong Huang
Summary The regulatory mechanisms of anthocyanin biosynthesis have been well documented at the transcriptional and translational levels. By contrast, how anthocyanin biosynthesis is epigenetically regulated remains largely unknown. In this study, we employed genetic, molecular biology, and chromatin immunoprecipitation‐quantitative polymerase chain reaction assays to identify a regulatory module essential
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Microbial terroir: associations between soil microbiomes and the flavor chemistry of mustard (Brassica juncea) New Phytol. (IF 9.4) Pub Date : 2024-03-30 Corinne Walsh, Caihong Vanderburgh, Lady Grant, Ella Katz, Daniel J. Kliebenstein, Noah Fierer
Summary Here, we characterized the independent role of soil microbiomes (bacterial and fungal communities) in determining the flavor chemistry of harvested mustard seed (Brassica juncea). Given the known impacts of soil microbial communities on various plant characteristics, we hypothesized that differences in rhizosphere microbiomes would result in differences in seed flavor chemistry (glucosinolate
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Microbial responses to stress cryptically alter natural selection on plants New Phytol. (IF 9.4) Pub Date : 2024-03-29 Lana G. Bolin, Jennifer A. Lau
Summary Microbial communities can rapidly respond to stress, meaning plants may encounter altered soil microbial communities in stressful environments. These altered microbial communities may then affect natural selection on plants. Because stress can cause lasting changes to microbial communities, microbes may also cause legacy effects on plant selection that persist even after the stress ceases.
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Integrating edaphic gradients and community assembly concepts into the multidimensional root trait space New Phytol. (IF 9.4) Pub Date : 2024-03-29 Caroline Dallstream, Fiona M. Soper
The more that we discover about fine roots – the smallest and most distal roots responsible for nutrient and water uptake – the more complex they become. Due to their role in the acquisition of multiple resources, functional traits that describe the morphology, physiology, architecture, and symbiotic associations of fine roots express multiple co-occurring tradeoffs and coordinations, leading to a
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Aerobic methane production in Scots pine shoots is independent of drought or photosynthesis New Phytol. (IF 9.4) Pub Date : 2024-03-29 Salla A. M. Tenhovirta, Lukas Kohl, Markku Koskinen, Tatu Polvinen, Yann Salmon, Teemu Paljakka, Mari Pihlatie
Summary Shoot‐level emissions of aerobically produced methane (CH4) may be an overlooked source of tree‐derived CH4, but insufficient understanding of the interactions between their environmental and physiological drivers still prevents the reliable upscaling of canopy CH4 fluxes. We utilised a novel automated chamber system to continuously measure CH4 fluxes from the shoots of Pinus sylvestris (Scots
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Unravelling the internal connections of plants New Phytol. (IF 9.4) Pub Date : 2024-03-29 Agata Burian, Daniel Kierzkowski
One of the major challenges during the development of multicellular organisms is integrating the functioning of the entire body, despite increasing distances between cells or organs. In plants, this integration is facilitated by an internal communication system composed of vascular strands that extend throughout the plant, linking all above-ground organs with the roots. Within the shoot, these vascular
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Resurrection plants revisited: bridging the gap between bryophytes and angiosperms to decode desiccation tolerance New Phytol. (IF 9.4) Pub Date : 2024-03-29 Rose A. Marks
Desiccation tolerance is widespread on the phylogeny, but rare in seed plants, found only in select species that occur in the most water-limited environments (Marks et al., 2021). Desiccation tolerance is thought to have evolved over 500 million years ago and likely played a critical role in enabling the transition of early land plants from aquatic to terrestrial environments (Oliver et al., 2000)