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Genetic and transcriptomic analysis of the Bradyrhizobium T3SS-triggered nodulation in the legume Aeschynomene evenia New Phytol. (IF 8.3) Pub Date : 2024-09-20 Alicia Camuel, Djamel Gully, Marjorie Pervent, Albin Teulet, Nico Nouwen, Jean-François Arrighi, Eric Giraud
Introduction In rhizobium/legume symbiosis, the interaction leads to the formation of a symbiotic organ, the nodule, in which the bacteria fix dinitrogen for the plant's benefit. This interaction generally involves an exchange of diffusible signals between the two partners, in which the rhizobial Nod factors (NFs) are recognized as the key signal that governs the nodule formation and its concomitant
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High photosynthesis rates in Brassiceae species are mediated by leaf anatomy enabling high biochemical capacity, rapid CO2 diffusion and efficient light use New Phytol. (IF 8.3) Pub Date : 2024-09-18 Moges A. Retta, Leen Van Doorselaer, Steven M. Driever, Xinyou Yin, Norbert C. A. de Ruijter, Pieter Verboven, Bart M. Nicolaï, Paul C. Struik
Introduction Enhancing photosynthesis is vital for averting food shortages by boosting crop yields (Zhu et al., 2010; Ort et al., 2015; Simkin et al., 2019). Exploring the photosynthesis of wild relatives of cultivated crops may reveal novel genetic and physiological factors contributing to high photosynthetic rates (Adachi et al., 2013; Taylor et al., 2020; Mathan et al., 2021). Agriculturally important
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The rice orobanchol synthase catalyzes the hydroxylation of the noncanonical strigolactone methyl 4-oxo-carlactonoate New Phytol. (IF 8.3) Pub Date : 2024-09-19 Jian You Wang, Aparna Balakrishna, Claudio Martínez, Guan-Ting Erica Chen, Salim Sioud, Angel R. de Lera, Salim Al-Babili
Introduction The plant hormone strigolactones (SLs) is a main regulator of various growth and developmental processes, such as shoot branching/tillering, stem thickness, leaf senescence, and root development (Al-Babili & Bouwmeester, 2015; Wang et al., 2024). Accordingly, SL-deficient mutants, such as the rice d17, exhibit severe phenotypes with respect to shoot and root architecture, among others
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A nitrogen‐responsive cytokinin oxidase/dehydrogenase regulates root response to high ammonium in rice New Phytol. (IF 8.3) Pub Date : 2024-09-19 Lun Li, Letian Jia, Xingliang Duan, Yuanda Lv, Chengyu Ye, Chengqiang Ding, Yuwen Zhang, Weicong Qi, Hans Motte, Tom Beeckman, Le Luo, Wei Xuan
Summary Plant root system is significantly influenced by high soil levels of ammonium nitrogen, leading to reduced root elongation and enhanced lateral root branching. In Arabidopsis, these processes have been reported to be mediated by phytohormones and their downstream signaling pathways, while the controlling mechanisms remain elusive in crops. Through a transcriptome analysis of roots subjected
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Analysis of randomly mutated AlSRKb genes reveals that most loss-of-function mutations cause defects in plasma membrane localization New Phytol. (IF 8.3) Pub Date : 2024-09-15 Masaya Yamamoto, Shotaro Ohtake, Akihisa Shinozawa, Matsuyuki Shirota, Yuki Mitsui, Hiroyasu Kitashiba
Introduction Errors in DNA replication that result in a change in the DNA sequence produce nucleotide variation in living organisms. Although nonsynonymous variants may cause genes to lose their function or develop new ones, some have no effect on the functions of genes. Advances in sequencing technology over the past two decades have revealed the full picture of DNA polymorphisms across a genome (Hu
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Endogenous viral elements are targeted by RNA silencing pathways in banana. New Phytol. (IF 8.3) Pub Date : 2024-09-18 Pierre-Olivier Duroy,Jonathan Seguin,Sébastien Ravel,Rajeswaran Rajendran,Nathalie Laboureau,Frédéric Salmon,Jean-Marie Delos,Mikhail Pooggin,Marie-Line Iskra-Caruana,Matthieu Chabannes
Endogenous banana streak virus (eBSV) integrants derived from three distinct species, present in Musa balbisiana (B) but not Musa acuminata (A) banana genomes are able to reconstitute functional episomal viruses causing banana streak disease in interspecific triploid AAB banana hybrids but not in the diploid (BB) parent line, which harbours identical eBSV loci. Here, we investigated the regulation
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A thaumatin‐like effector protein suppresses the rust resistance of wheat and promotes the pathogenicity of Puccinia triticina by targeting TaRCA New Phytol. (IF 8.3) Pub Date : 2024-09-18 Jiaying Chang, Johannes Mapuranga, Xiaodong Wang, Haijiao Dong, Ruolin Li, Yingdan Zhang, Hao Li, Jie Shi, Wenxiang Yang
Summary Thaumatin‐like proteins (TLPs) in plants play a crucial role in combating stress, and they have been proven to possess antifungal properties. However, the role of TLPs in pathogens has not been reported. We identified a effector protein, Pt9029, which contained a Thaumatin domain in Puccinia triticina (Pt), possessing a chloroplast transit peptide and localized in the chloroplasts. Silencing
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Streamlined screening platforms lead to the discovery of pachysiphine synthase from Tabernanthe iboga New Phytol. (IF 8.3) Pub Date : 2024-09-17 Mohamed O. Kamileen, Yoko Nakamura, Katrin Luck, Sarah Heinicke, Benke Hong, Maite Colinas, Benjamin R. Lichman, Sarah E. O'Connor
Summary Plant‐specialized metabolism is largely driven by the oxidative tailoring of key chemical scaffolds catalyzed by cytochrome P450 (CYP450s) enzymes. Monoterpene indole alkaloids (MIAs) tabersonine and pseudo‐tabersonine, found in the medicinal plant Tabernanthe iboga (commonly known as iboga), are tailored with oxidations, and the enzymes involved remain unknown. Here, we developed a streamlined
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An allometry perspective on crops New Phytol. (IF 8.3) Pub Date : 2024-09-17 Adrianus J. Westgeest, François Vasseur, Brian J. Enquist, Rubén Milla, Alicia Gómez‐Fernández, David Pot, Denis Vile, Cyrille Violle
SummaryUnderstanding trait–trait coordination is essential for successful plant breeding and crop modeling. Notably, plant size drives variation in morphological, physiological, and performance‐related traits, as described by allometric laws in ecology. Yet, as allometric relationships have been limitedly studied in crops, how they influence and possibly limit crop performance remains unknown. Here
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Photosynthetic ROS and retrograde signaling pathways New Phytol. (IF 8.3) Pub Date : 2024-09-17 Keun Pyo Lee, Chanhong Kim
SummarySessile plants harness mitochondria and chloroplasts to sense and adapt to diverse environmental stimuli. These complex processes involve the generation of pivotal signaling molecules, including reactive oxygen species (ROS), phytohormones, volatiles, and diverse metabolites. Furthermore, the specific modulation of chloroplast proteins, through activation or deactivation, significantly enhances
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The small RNA biogenesis in rice is regulated by MAP kinase‐mediated OsCDKD phosphorylation New Phytol. (IF 8.3) Pub Date : 2024-09-17 Dhanraj Singh, Neetu Verma, Balakrishnan Rengasamy, Gopal Banerjee, Alok Krishna Sinha
Summary CDKs are the master regulator of cell division and their activity is controlled by the regulatory subunit cyclins and phosphorylation by the CAKs. However, the role of MAP kinases in regulating plant cell cycle or CDKs have not been explored. Here, we report that the MAP kinases OsMPK3, OsMPK4, and OsMPK6 physically interact and phosphorylate OsCDKD and its regulatory subunit OsCYCH in rice
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Thermal acclimation of ecosystem processes to climate warming New Phytol. (IF 8.3) Pub Date : 2024-09-17 Jinsong Wang, Shuli Niu
The Earth's climate is changing rapidly, with temperature increases posing significant challenges to the biosphere. How the timing of life-history events in organisms, which is closely linked to many ecosystem functions, responds to increasing global temperatures is an emerging ecological frontier (Liu et al., 2022). In a recent New Phytologist article, Lu et al. (2024, doi: 10.1111/nph.20019) show
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Current challenges for plant biology research in the Global South New Phytol. (IF 8.3) Pub Date : 2024-09-15 Gabriela Auge, Rohan Shawn Sunil, Robert A. Ingle, Puthan Valappil Rahul, Marek Mutwil, José M. Estevez
In an attempt to address the large inequities faced by the plant biology communities from the Global South (i.e. countries located around the tropics and the Southern Hemisphere) at international conferences, this Viewpoint is the reflexive thinking arising from the concurrent session titled ‘Arabidopsis and its translational research in the Global South’ organized at the International Conference of
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Weak link or strong foundation? Vulnerability of fine root networks and stems to xylem embolism New Phytol. (IF 8.3) Pub Date : 2024-09-13 Beatrice L. Harrison Day, Craig R. Brodersen, Timothy J. Brodribb
Summary Resolving the position of roots in the whole‐plant hierarchy of drought‐induced xylem embolism resistance is fundamental for predicting when species become isolated from soil water resources. Published research generally suggests that roots are the most vulnerable organ of the plant vascular system, although estimates vary significantly. However, our knowledge of root embolism excludes the
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Gene editing of economic macroalga Neopyropia yezoensis (Rhodophyta) will promote its development into a model species of marine algae New Phytol. (IF 8.3) Pub Date : 2024-09-13 Hong Wang, Xiujun Xie, Wenhui Gu, Zhenbing Zheng, Jintao Zhuo, Zhizhuo Shao, Li Huan, Baoyu Zhang, Jianfeng Niu, Shan Gao, Xulei Wang, Guangce Wang
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Systematic synthesis and identification of monolignol pathway metabolites New Phytol. (IF 8.3) Pub Date : 2024-09-13 Chung‐Ting Kao, Fan‐Wei Yang, Meng‐Chen Wu, Tzu‐Huan Hung, Chen‐Wei Hu, Chiu‐Hua Chen, Pin‐Chien Liou, Te‐Lun Mai, Chia‐Chih Chang, Tung‐Yi Lin, Ying‐Lan Chen, Ying‐Chung Jimmy Lin, Jung‐Chen Su
SummaryMonolignol serves as the building blocks to constitute lignin, the second abundant polymer on Earth. Despite two decades of diligent efforts, complete identification of all metabolites in the currently proposed monolignol biosynthesis pathway has proven elusive. This limitation also hampers their potential application. One of the primary obstacles is the challenge of assembling a collection
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Non‐native plants tend to be phylogenetically distant but functionally similar to native plants under intense disturbance at the Three Gorges Reservoir Area New Phytol. (IF 8.3) Pub Date : 2024-09-12 Haichuan Le, Jiangtao Mao, Jeannine Cavender‐Bares, Jesús N. Pinto‐Ledezma, Ying Deng, Changming Zhao, Gaoming Xiong, Wenting Xu, Zongqiang Xie
Summary Darwin's two opposing hypotheses, proposing that non‐native species closely or distantly related to native species are more likely to succeed, are known as ‘Darwin's Naturalization Conundrum’. Recently, invasion ecologists have sought to unravel these hypotheses. Studies that incorporate rich observational data in disturbed ecosystems that integrate phylogenetic and functional perspectives
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SmJAZs‐SmbHLH37/SmERF73‐SmSAP4 module mediates jasmonic acid signaling to balance biosynthesis of medicinal metabolites and salt tolerance in Salvia miltiorrhiza New Phytol. (IF 8.3) Pub Date : 2024-09-12 Bingbing Lv, Huaiyu Deng, Jia Wei, Qiaoqiao Feng, Bo Liu, Anqi Zuo, Yichen Bai, Jingying Liu, Juane Dong, Pengda Ma
Summary Salvia miltiorrhiza holds significant importance in traditional Chinese medicine. Stress‐associated proteins (SAP), identified by A20/AN1 zinc finger structural domains, play crucial roles in regulating plant growth, development, resistance to biotic and abiotic stress, and hormone responses. Herein, we conducted a genome‐wide identification of the SAP gene family in S. miltiorrhiza. The expression
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Two functionally interchangeable Vps9 isoforms mediate pollen tube penetration of style New Phytol. (IF 8.3) Pub Date : 2024-09-12 Guang‐Jiu Hao, Jun Ying, Lu‐Shen Li, Fei Yu, Shan‐Shan Dun, Le‐Yan Su, Xin‐Ying Zhao, Sha Li, Yan Zhang
Summary Style penetration by pollen tubes is essential for reproductive success, a process requiring canonical Rab5s in Arabidopsis. However, functional loss of Arabidopsis Vps9a, the gene encoding for guanine nucleotide exchange factor (GEF) of Rab5s, did not affect male transmission, implying the presence of a compensation program or redundancy. By combining genetic, cytological, and molecular approaches
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An appreciation of apex‐to‐base variation in xylem traits will lead to more precise understanding of xylem phenotypic plasticity New Phytol. (IF 8.3) Pub Date : 2024-09-12 Giai Petit
SummaryXylem air embolism is the primary cause of drought‐related tree mortality. Phenotypic plasticity of xylem traits is key for species acclimation to environmental variability and evolution. It is widely believed that plants increase xylem embolism resistance in response to drought. However, I argue that this hypothesis, based on extensive literature, relies on sampling methods that overlook predictable
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Photodegradation in terrestrial ecosystems New Phytol. (IF 8.3) Pub Date : 2024-09-12 Amy T. Austin, Carlos L. Ballaré
SummaryThe first step in carbon (C) turnover, where senesced plant biomass is converted through various pathways into compounds that are released to the atmosphere or incorporated into the soil, is termed litter decomposition. This review is focused on recent advances of how solar radiation can affect this important process in terrestrial ecosystems. We explore the photochemical degradation of plant
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Unravelling drivers of local adaptation through evolutionary functional–structural plant modelling New Phytol. (IF 8.3) Pub Date : 2024-09-11 Jorad de Vries, Simone Fior, Aksel Pålsson, Alex Widmer, Jake M. Alexander
Summary Local adaptation to contrasting environmental conditions along environmental gradients is a widespread phenomenon in plant populations, yet we lack a mechanistic understanding of how individual agents of selection contribute to this evolutionary process. Here, we developed a novel evolutionary functional–structural plant (E‐FSP) model that recreates local adaptation of virtual plants along
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Making yourself heard: why well‐exposed flowers are an adaptation for bat pollination New Phytol. (IF 8.3) Pub Date : 2024-09-11 Nathan Muchhala, Juan Moreira‐Hernández, Alejandro Zuluaga
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Establishing a highly efficient diploid seedless watermelon production system through manipulation of the SPOROCYTELESS gene New Phytol. (IF 8.3) Pub Date : 2024-09-11 Jiao Jiang, Qin Feng, Zijun Zhao, Qiyan Liu, Man Liu, Jiafa Wang, Feishi Luan, Xian Zhang, Shujuan Tian, Shi Liu, Li Yuan
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A stomate by any other name? The open question of hornwort gametophytic pores, their homology, and implications for the evolution of stomates New Phytol. (IF 8.3) Pub Date : 2024-09-11 James Paul Fortin, William E. Friedman
SummaryAdvances in bryophyte genomics and the phylogenetic recovery of hornworts, mosses, and liverworts as a clade have spurred considerable recent interest in character evolution among early embryophytes. Discussion of stomatal evolution, however, has been incomplete; the result of the neglect of certain potential stomate homologues, namely the two‐celled epidermal gametophytic pores of hornworts
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High‐nitrogen‐induced γ‐aminobutyric acid triggers host immunity and pathogen oxidative stress tolerance in tomato and Ralstonia solanacearum interaction New Phytol. (IF 8.3) Pub Date : 2024-09-10 Wei Liu, Yushu Wang, Tuo Ji, Chengqiang Wang, Qinghua Shi, Chuanyou Li, Jin‐Wei Wei, Biao Gong
Summary Soil nitrogen (N) significantly influences the interaction between plants and pathogens, yet its impact on host defenses and pathogen strategies via alterations in plant metabolism remains unclear. Through metabolic and genetic studies, this research demonstrates that high‐N‐input exacerbates tomato bacterial wilt by altering γ‐aminobutyric acid (GABA) metabolism of host plants. Under high‐N
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Evolutionarily conserved core microbiota as an extended trait in nitrogen acquisition strategy of herbaceous species New Phytol. (IF 8.3) Pub Date : 2024-09-10 Saisai Cheng, Xin Gong, Wenfeng Xue, Paul Kardol, Manuel Delgado‐Baquerizo, Ning Ling, Xiaoyun Chen, Manqiang Liu
Summary Microbiota have co‐evolved with plants over millions of years and are intimately linked to plants, ranging from symbiosis to pathogenesis. However, our understanding of the existence of a shared core microbiota across phylogenetically diverse plants remains limited. A common garden field experiment was conducted to investigate the rhizosphere microbial communities of phylogenetically contrasting
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Turning the industrially relevant marine alga Nannochloropsis red: one move for multifaceted benefits New Phytol. (IF 8.3) Pub Date : 2024-09-10 Meijing Liu, Lihua Yu, Jie Zheng, Shengxi Shao, Yufang Pan, Hanhua Hu, Lili Shen, Wenda Wang, Wenguang Zhou, Jin Liu
Summary Nannochloropsis oceanica is an industrially relevant marine microalga rich in eicosapentaenoic acid (EPA, a valuable ω‐3 polyunsaturated fatty acid), yet the algal production potential remains to be unlocked. Here we engineered N. oceanica to synthesize the high‐value carotenoid astaxanthin independent of high‐light (HL) induction for achieving multifaceted benefits. By screening β‐carotenoid
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Ice age‐driven range shifts of diploids and expanding autotetraploids of Biscutella laevigata within a conserved niche New Phytol. (IF 8.3) Pub Date : 2024-09-10 Sandra Grünig, Theofania Patsiou, Christian Parisod
Summary Early studies of the textbook mixed‐ploidy system Biscutella laevigata highlighted diploids restricted to never‐glaciated lowlands and tetraploids at high elevations across the European Alps, promoting the hypothesis that whole‐genome duplication (WGD) is advantageous under environmental changes. Here we addressed long‐held hypotheses on the role of hybridisation at the origin of the tetraploids
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Rob Roelfsema New Phytol. (IF 8.3) Pub Date : 2024-09-10
What inspired your interest in plant science? I grew up in the countryside of the Netherlands where I attended a very small primary school with only two classrooms. At this school, I had the same teacher for 3 years, who was fascinated by nature, and I think he sparked my interest in biology. Later in high school, we had some practical courses in biology, and I found it easy to understand the experimental
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Genetic and epigenetic reprogramming in response to internal and external cues by induced transposon mobilization in Moso bamboo New Phytol. (IF 8.3) Pub Date : 2024-09-06 Long‐Hai Zou, Bailiang Zhu, Yaxin Chen, Yaping Lu, Muthusamy Ramkrishnan, Chao Xu, Xiaohong Zhou, Yiqian Ding, Jungnam Cho, Mingbing Zhou
Summary Long terminal repeat retroelements (LTR‐REs) have profound effects on DNA methylation and gene regulation. Despite the vast abundance of LTR‐REs in the genome of Moso bamboo (Phyllostachys edulis), an industrial crop in underdeveloped countries, their precise implication of the LTR‐RE mobility in stress response and development remains unknown. We investigated the RNA and DNA products of LTR‐REs
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Shorting the metaphorical circuit: vascular partitioning and stomatal patchiness can create apparent unsaturation and CO2 gradient inversion in the Ohmic analogy for leaf gas exchange New Phytol. (IF 8.3) Pub Date : 2024-09-06 Fulton E. Rockwell
Summary Analyses of leaf gas exchange rely on an Ohmic analogy that arrays single stomatal, internal air space, and mesophyll conductances in series. Such models underlie inferences of mesophyll conductance and the relative humidity of leaf airspaces, reported to fall as low as 80%. An unresolved question is whether such series models are biased with respect to real leaves, whose internal air spaces
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Contrasting drought tolerance traits of woody plants is associated with mycorrhizal types at the global scale New Phytol. (IF 8.3) Pub Date : 2024-09-06 Xiaorong Liu, Kailiang Yu, Hui Liu, Richard P. Phillips, Pengcheng He, Xingyun Liang, Weize Tang, César Terrer, Kimberly A. Novick, Emily P. Bakpa, Min Zhao, Xinbo Gao, Yi Jin, Yin Wen, Qing Ye
Summary It is well‐known that the mycorrhizal type of plants correlates with different modes of nutrient cycling and availability. However, the differences in drought tolerance between arbuscular mycorrhizal (AM) and ectomycorrhizal (EcM) plants remains poorly characterized. We synthesized a global dataset of four hydraulic traits associated with drought tolerance of 1457 woody species (1139 AM and
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Homoeologous crossovers are distally biased and underlie genomic instability in first‐generation neo‐allopolyploid Arabidopsis suecica New Phytol. (IF 8.3) Pub Date : 2024-09-06 Candida Nibau, Aled Evans, Holly King, Dylan Wyn Phillips, Andrew Lloyd
Summary First‐generation polyploids often suffer from more meiotic errors and lower fertility than established wild polyploid populations. One such example is the allopolyploid model species Arabidopsis suecica which originated c. 16 000 generations ago. We present here a comparison of meiosis and its outcomes in naturally evolved and first‐generation ‘synthetic’ A. suecica using a combination of cytological
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GLABRA2 transcription factor integrates arsenic tolerance with epidermal cell fate determination New Phytol. (IF 8.3) Pub Date : 2024-09-06 Micaela Andrea Navarro, Cristina Navarro, Luis Eduardo Hernández, María Garnica, José Manuel Franco‐Zorrilla, Yogev Burko, Sara González‐Serrano, José M. García‐Mina, José Pruneda‐Paz, Joanne Chory, Antonio Leyva
Summary Arsenic poses a global threat to living organisms, compromising crop security and yield. Limited understanding of the transcriptional network integrating arsenic‐tolerance mechanisms with plant developmental responses hinders the development of strategies against this toxic metalloid. Here, we conducted a high‐throughput yeast one‐hybrid assay using as baits the promoter region from the arsenic‐inducible
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AtALMT5 mediates vacuolar fumarate import and regulates the malate/fumarate balance in Arabidopsis New Phytol. (IF 8.3) Pub Date : 2024-09-06 Roxane Doireau, Justyna Jaślan, Paloma Cubero‐Font, Elsa Demes‐Causse, Karen Bertaux, Cédric Cassan, Pierre Pétriarcq, Alexis De Angeli
Summary Malate and fumarate constitute a significant fraction of the carbon fixed by photosynthesis, and they are at the crossroad of central metabolic pathways. In Arabidopsis thaliana, they are transiently stored in the vacuole to keep cytosolic homeostasis. The malate and fumarate transport systems of the vacuolar membrane are key players in the control of cell metabolism. Notably, the molecular
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H218O vapour labelling reveals evidence of radial Péclet effects, but in not all leaves New Phytol. (IF 8.3) Pub Date : 2024-09-06 Margaret M. Barbour, Melissa A. White, Lulu Liu
Summary Contradictory evidence exists regarding the relevance of Péclet‐like gradients in leaf water isotopes, making it difficult to accurately predict variation in isotope composition. Here, we use H218O vapour labelling to directly test whether leaf water isotopes diffuse back into the xylem to be carried forward to more distal leaf portions. Backward diffusion has been assumed, due to observations
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How does plant chemodiversity evolve? Testing five hypotheses in one population genetic model New Phytol. (IF 8.3) Pub Date : 2024-09-06 Meike J. Wittmann, Andrea Bräutigam
Summary Plant chemodiversity, the diversity of plant‐specialized metabolites, is an important dimension of biodiversity. However, there are so far few mathematical models to test verbal hypotheses on how chemodiversity evolved. Here, we develop such a model to test predictions of five hypotheses: the ‘fluctuating selection hypothesis’, the ‘dominance reversal hypothesis’, the interaction diversity
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An activity‐based sensing fluorogenic probe for monitoring O‐methyltransferase in plants New Phytol. (IF 8.3) Pub Date : 2024-09-05 Xin‐Lei Jia, Lixiang Zhu, Yuanyu Li, Pan Zhang, Xiao Chen, Kai Shao, Jingxian Feng, Shi Qiu, Jiaran Geng, Yingbo Yang, Zongtai Wu, Jingshi Xue, Ping Wang, Wansheng Chen, Ying Xiao
Summary Activity‐based sensing probes are powerful tools for monitoring enzymatic activities in complex biological samples such as cellular and live animals; however, their application in plants remains challenging. Herein, fourteen activity‐based fluorescent probes were assayed against Arabidopsis O‐methyltransferases (AtOMTs). One probe, 3‐BTD, displayed a high selectivity, reactivity, and fluorescence
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Impaired Brown midrib12 function orchestrates sorghum resistance to aphids via an auxin conjugate indole‐3‐acetic acid–aspartic acid New Phytol. (IF 8.3) Pub Date : 2024-09-05 Sajjan Grover, De‐Fen Mou, Kumar Shrestha, Heena Puri, Lise Pingault, Scott E. Sattler, Joe Louis
Summary Lignin, a complex heterogenous polymer present in virtually all plant cell walls, plays a critical role in protecting plants from various stresses. However, little is known about how lignin modifications in sorghum will impact plant defense against sugarcane aphids (SCA), a key pest of sorghum. We utilized the sorghum brown midrib (bmr) mutants, which are impaired in monolignol synthesis, to
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PRL1 interacts with and stabilizes RPA2A to regulate carbon deprivation‐induced senescence in Arabidopsis New Phytol. (IF 8.3) Pub Date : 2024-09-04 Jingjing Meng, Wenhui Zhou, Xinhao Mao, Pei Lei, Xue An, Hui Xue, Yafei Qi, Fei Yu, Xiayan Liu
Summary Leaf senescence is a developmental program regulated by both endogenous and environmental cues. Abiotic stresses such as nutrient deprivation can induce premature leaf senescence, which profoundly impacts plant growth and crop yield. However, the molecular mechanisms underlying stress‐induced senescence are not fully understood. In this work, employing a carbon deprivation (C‐deprivation)‐induced
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Progressing beyond colonization strategies to understand arbuscular mycorrhizal fungal life history New Phytol. (IF 8.3) Pub Date : 2024-09-04 Tessa Camenzind, Carlos A. Aguilar‐Trigueros, Meike K. Heuck, Solomon Maerowitz‐McMahan, Matthias C. Rillig, Will K. Cornwell, Jeff R. Powell
SummaryKnowledge of differential life‐history strategies in arbuscular mycorrhizal (AM) fungi is relevant for understanding the ecology of this group and its potential role in sustainable agriculture and carbon sequestration. At present, AM fungal life‐history theories often focus on differential investment into intra‐ vs extraradical structures among AM fungal taxa, and its implications for plant
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Leaf stomatal configuration and photosynthetic traits jointly affect leaf water use efficiency in forests along climate gradients New Phytol. (IF 8.3) Pub Date : 2024-09-03 Shengnan Pan, Xin Wang, Zhengbing Yan, Jin Wu, Lulu Guo, Ziyang Peng, Yuntao Wu, Jing Li, Bin Wang, Yanjun Su, Lingli Liu
Summary Water use efficiency (WUE) represents the trade‐off between carbon assimilation and water loss in plants. It remains unclear how leaf stomatal and photosynthetic traits regulate the spatial variation of leaf WUE in different natural forest ecosystems. We investigated 43 broad‐leaf tree species spanning from cold‐temperate to tropical forests in China. We quantified leaf WUE using leaf δ13C
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CmMYC2–CmMYBML1 module orchestrates the resistance to herbivory by synchronously regulating the trichome development and constitutive terpene biosynthesis in Chrysanthemum New Phytol. (IF 8.3) Pub Date : 2024-09-03 Yaqin Guan, Li Jiang, You Wang, Guanhua Liu, Jiayi Wu, Hong Luo, Sumei Chen, Fadi Chen, Ülo Niinemets, Feng Chen, Yifan Jiang
Summary Trichomes are specialized epidermal outgrowths covering the aerial parts of most terrestrial plants. There is a large species variability in occurrence of different types of trichomes such that the molecular regulatory mechanism underlying the formation and the biological function of trichomes in most plant species remain unexplored. Here, we used Chrysanthemum morifolium as a model plant to
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Meiosis requires m6A modification for selection of targets in plants New Phytol. (IF 8.3) Pub Date : 2024-09-03 Cong Wang, Yingxiang Wang
The N6-methyladenosine (m6A) modification is the most prevalent internal posttranscriptional modification of mRNAs in eukaryotes (Shi et al., 2019). Although this mRNA modification was first identified from mammalian cells 50 years ago (Perry & Kelley, 1974), its distinct biological role in regulating mRNA was not reported until 2008, when Methyltransferase A (MTA), a component of the m6A methyltransferase
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Transcriptomics reveal a mechanism of niche defense: two beneficial root endophytes deploy an antimicrobial GH18‐CBM5 chitinase to protect their hosts New Phytol. (IF 8.3) Pub Date : 2024-09-03 Ruben Eichfeld, Lisa K. Mahdi, Concetta De Quattro, Laura Armbruster, Asmamaw B. Endeshaw, Shingo Miyauchi, Margareta J. Hellmann, Stefan Cord‐Landwehr, Daniel Peterson, Vasanth Singan, Kathleen Lail, Emily Savage, Vivian Ng, Igor V. Grigoriev, Gregor Langen, Bruno M. Moerschbacher, Alga Zuccaro
Summary Effector secretion is crucial for root endophytes to establish and protect their ecological niche. We used time‐resolved transcriptomics to monitor effector gene expression dynamics in two closely related Sebacinales, Serendipita indica and Serendipita vermifera, during symbiosis with three plant species, competition with the phytopathogenic fungus Bipolaris sorokiniana, and cooperation with
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Interorgan, intraorgan and interplant communication mediated by nitric oxide and related species New Phytol. (IF 8.3) Pub Date : 2024-09-03 Zsuzsanna Kolbert, Juan B. Barroso, Alexandre Boscari, Francisco J. Corpas, Kapuganti Jagadis Gupta, John T. Hancock, Christian Lindermayr, José Manuel Palma, Marek Petřivalský, David Wendehenne, Gary J. Loake
SummaryPlant survival to a potential plethora of diverse environmental insults is underpinned by coordinated communication amongst organs to help shape effective responses to these environmental challenges at the whole plant level. This interorgan communication is supported by a complex signal network that regulates growth, development and environmental responses. Nitric oxide (NO) has emerged as a
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Abscisic acid‐induced H2O2 production positively regulates the activity of SAPK8/9/10 through oxidation of the type one protein phosphatase OsPP47 New Phytol. (IF 8.3) Pub Date : 2024-09-02 Caihua Qin, Xing Fan, Qianqian Fang, Honghua Yu, Lan Ni, Mingyi Jiang
Summary Subclass III sucrose nonfermenting1‐related protein kinase 2s (SnRK2s) are positive regulators of abscisic acid (ABA) signaling and abiotic stress responses. However, the underlying activation mechanisms of osmotic stress/ABA‐activated protein kinase 8/9/10 (SAPK8/9/10) of rice (Oryza sativa) subclass III SnRK2s in ABA signaling remain to be elucidated. In this study, we employed biochemical
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ZmCRK1 negatively regulates maize's response to drought stress by phosphorylating plasma membrane H+‐ATPase ZmMHA2 New Phytol. (IF 8.3) Pub Date : 2024-09-02 Jinjie Liu, Xi‐Dong Li, Dongyun Jia, Liuran Qi, Rufan Jing, Jie Hao, Zhe Wang, Jinkui Cheng, Li‐Mei Chen
Summary Drought severely affects crop growth and yields. Stomatal regulation plays an important role in plant response to drought stress. Light‐activated plasma membrane‐localized proton ATPase (PM H+‐ATPase) mainly promoted the stomatal opening. Abscisic acid (ABA) plays a dominant role in the stomatal closure during drought stress. It is not clear how PM H+‐ATPase is involved in the regulation of
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Dynamic regulation of PHR2 is essential for arbuscule maintenance New Phytol. (IF 8.3) Pub Date : 2024-08-30 Sagar Bashyal, Chandan Kumar Gautam, Debatosh Das
Plants constantly face the challenge of obtaining adequate nutrients from the soil, with phosphorus (P) being one of the most essential yet frequently limited nutrients. Plants absorb phosphorus in the form of inorganic orthophosphate (Chiou & Lin, 2011). Under phosphate-limiting conditions, a phosphate starvation response (PSR) is activated in the plants, initiated by derepression of transcriptional
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A demonstration of the enviromics approach to integrating environmental ‘big data’ problems New Phytol. (IF 8.3) Pub Date : 2024-08-30 Andrew F. Bowerman
With the expansion of technologies available to biological science has come an enormous rise in the amount and diverse nature of data. How we interrogate and combine ‘big data’ in different biological contexts has become the new challenge for crop biologists, be it at the genetic, phenotypic or environmental level (Pal et al., 2020). An enormous amount of environmental data is now being collected globally
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Maize mutant screens: from classical methods to new CRISPR-based approaches New Phytol. (IF 8.3) Pub Date : 2024-08-30 Christian Damian Lorenzo, David Blasco-Escámez, Arthur Beauchet, Pieter Wytynck, Matilde Sanches, Jose Rodrigo Garcia del Campo, Dirk Inzé, Hilde Nelissen
Mutations play a pivotal role in shaping the trajectory and outcomes of a species evolution and domestication. Maize (Zea mays) has been a major staple crop and model for genetic research for more than 100 yr. With the arrival of site-directed mutagenesis and genome editing (GE) driven by the Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR), maize mutational research is once again
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Ad fontes: divergence‐time estimation and the age of angiosperms New Phytol. (IF 8.3) Pub Date : 2024-08-29 Stephen A. Smith, Jeremy M. Beaulieu
SummaryAccurate divergence times are essential for interpreting and understanding the context in which lineages have evolved. Over the past several decades, debates have surrounded the discrepancies between the inferred molecular ages of crown angiosperms, often estimated from the Late Jurassic into the Permian, and the fossil record, placing angiosperms in the Early Cretaceous. That crown angiosperms
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Nocturnal burst emissions of germacrene D from the open disk florets of pyrethrum flowers induce moths to oviposit on a nonhost and improve pollination success New Phytol. (IF 8.3) Pub Date : 2024-08-29 Jinjin Li, Yuanyuan Luo, Maoyuan Li, Jiawen Li, Tuo Zeng, Jing Luo, Xiangqian Chang, Manqun Wang, Maarten A. Jongsma, Hao Hu, Caiyun Wang
Summary Recent studies show that nocturnal pollinators may be more important to ecosystem function and food production than is currently appreciated. Here, we describe an agricultural field study of pyrethrum (Tanacetum cinerariifolium) flower pollination. Pyrethrum is genetically self‐incompatible and thus is reliant on pollinators for seed set. Our pollinator exclusion experiment showed that nocturnal
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Dry inside: progressive unsaturation within leaves with increasing vapour pressure deficit affects estimation of key leaf gas exchange parameters New Phytol. (IF 8.3) Pub Date : 2024-08-29 Haoyu Diao, Lucas A. Cernusak, Matthias Saurer, Arthur Gessler, Rolf T. W. Siegwolf, Marco M. Lehmann
Summary Climate change not only leads to higher air temperatures but also increases the vapour pressure deficit (VPD) of the air. Understanding the direct effect of VPD on leaf gas exchange is crucial for precise modelling of stomatal functioning. We conducted combined leaf gas exchange and online isotope discrimination measurements on four common European tree species across a VPD range of 0.8–3.6
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Physiological trait coordination and variability across and within three Pinus species New Phytol. (IF 8.3) Pub Date : 2024-08-28 Steven P. Augustine, Katherine A. McCulloh
Introduction Over the past 50 yr, a rich history has explored how plant traits vary among species in different environments (Givnish, 1988; Reich & Oleksyn, 2004; Poorter et al., 2009, 2012; Choat et al., 2012; Zanne et al., 2014; Wright et al., 2017; Bruelheide et al., 2018; Joswig et al., 2022) and how co-occurring species separate into ecological space (Grime, 1977; Givnish, 1982; Grime et al., 1997;
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GSK3s promote the phyB‐ELF3‐HMR complex formation to regulate plant thermomorphogenesis New Phytol. (IF 8.3) Pub Date : 2024-08-28 Ruizhen Yang, Huixue Dong, Xianzhi Xie, Yunwei Zhang, Jiaqiang Sun
Summary Although elevated ambient temperature causes many effects on plant growth and development, the mechanisms of plant high‐ambient temperature sensing remain unknown. In this study, we show that GLYCOGEN SYNTHASE KINASE 3s (GSK3s) negatively regulate high‐ambient temperature response and oligomerize upon high‐temperature treatment. We demonstrate that GSK3 kinase BIN2 specifically interacts with
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Evolutionary drivers of reproductive fitness in two endangered forest trees New Phytol. (IF 8.3) Pub Date : 2024-08-27 Eduardo Mendoza‐Maya, Gustavo Ibrahim Giles‐Pérez, J. Jesús Vargas‐Hernández, Cuauhtémoc Sáenz‐Romero, Miguel Martínez‐Trujillo, María de los Angeles Beltrán‐Nambo, José Ciro Hernández‐Díaz, José Ángel Prieto‐Ruíz, Juan P. Jaramillo‐Correa, Christian Wehenkel
Summary Population genetics theory predicts a relationship between fitness, genetic diversity (H0) and effective population size (Ne), which is often tested through heterozygosity‐fitness correlations (HFCs). We tested whether population and individual fertility and heterozygosity are correlated in two endangered Mexican spruces (Picea martinezii and Picea mexicana) by combining genomic, demographic