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The SnRK1-JMJ15-CRF6 module integrates energy and mitochondrial signaling to balance growth and the oxidative stress response in Arabidopsis New Phytol. (IF 8.3) Pub Date : 2025-02-05 Yanming Zhao, Xinying Wang, Qianyan Lei, Xiaoyan Zhang, Yubei Wang, Huijia Ji, Chongyang Ma, Pengcheng Wang, Chun-Peng Song, Xiaohong Zhu
Mitochondria support plant growth and adaptation via energy production and signaling pathways. However, how mitochondria control the transition between growth and stress response is largely unknown in plants. Using molecular approaches, we identified the histone H3K4me3 demethylase JMJ15 and the transcription factor CRF6 as targets of SnRK1 in Arabidopsis. By analyzing antimycin A (AA)–triggered mitochondrial
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Major shifts in embryo size occurred early in the evolutionary history of angiosperms New Phytol. (IF 8.3) Pub Date : 2025-02-04 Filip Vandelook, Angelino Carta
Summary Seeds are the main dispersal and propagation units of angiosperms. Examining the relative allocation of seed reserves by quantifying the relative embryo size (ES) at dispersal (i.e. size of the embryo relative to the seed) across angiosperms, sets the basis to track the evolutionary history of this key reproductive trait related to germination timing and offspring survival. We used a robust
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Population genomics of the gametophyte‐only fern Vittaria appalachiana provides insights into clonal plant evolution New Phytol. (IF 8.3) Pub Date : 2025-02-04 Jessie A. Pelosi, Elissa S. Sorojsrisom, William Brad Barbazuk, Emily B. Sessa
Summary How asexually reproducing organisms maintain genetic diversity and adaptive potential is a long‐standing question in evolutionary biology. Asexual lineages have historically been thought of as evolutionary dead ends, yet some exhibit remarkable persistence through time. The gametophyte‐only fern Vittaria appalachiana is a clonal eukaryote, the focus of extensive study due to its peculiar habit
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HTD: a targetome database for plant physiology and regulation in HPPD family New Phytol. (IF 8.3) Pub Date : 2025-02-03 Long‐Can Mei, Fan Wang, Xin‐He Yu, Li‐Jun Chen, Jun‐Hao Ma, Yu‐Ting Xiang, Hong‐Yan Lin, Guang‐Fu Yang
Introduction 4-Hydroxyphenylpyruvate dioxygenase (HPPD) represents a pivotal enzyme in the metabolic processes of plants, exerting a decisive influence on the catabolism of the amino acid tyrosine. It is located within the plastids of plant cells, where it functions as a catalyst for the conversion of 4-hydroxyphenylpyruvate to homogentisate (HGA; Raspail et al., 2011). This reaction represents the
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Alternating inverse modulation of xylem K+/NO3− loading by HY5 and PIF facilitates diurnal regulation of root‐to‐shoot water and nutrient transport New Phytol. (IF 8.3) Pub Date : 2025-02-03 Si Jing, Han Zhang, Zidan Yang, Xin‐Qiao Du, Yingying Hu, Shao‐Shuai Wang, Shuwei Wang, Kaina Zhang, Zhen Li, Wei‐Hua Wu, Jörg Kudla, Jigang Li, Yi Wang
Summary Diurnal light–dark cycles regulate nutrient uptake and transport; however, the underlying molecular mechanisms remain largely unknown. Transcription factor MYB59 and ion transporter NPF7.3 participate in root‐to‐shoot K+/NO3− translocation in Arabidopsis. In this study, transcriptional analyses and western blotting experiments revealed the diurnal expression of the MYB59‐NPF7.3 module. ChIP‐qPCR
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Ecological speciation with gene flow followed initial large‐scale geographic speciation in the enigmatic afroalpine giant senecios (Dendrosenecio) New Phytol. (IF 8.3) Pub Date : 2025-02-01 Juan Manuel Gorospe, Eliška Záveská, Desalegn Chala, Abel Gizaw, Felly Mugizi Tusiime, A. Lovisa S. Gustafsson, Lubomír Piálek, Filip Kolář, Christian Brochmann, Roswitha Schmickl
Summary Mountains have highly heterogeneous environments that generate ample opportunities for lineage differentiation through ecological adaptation, geographic isolation and secondary contact. The geographic and ecological isolation of the afroalpine vegetation fragments on the East African mountain tops makes them an excellent system to study speciation. The initial diversification within the afroalpine
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Global peatland greenhouse gas dynamics: state of the art, processes, and perspectives New Phytol. (IF 8.3) Pub Date : 2025-02-01 Ülo Mander, Maarja Öpik, Mikk Espenberg
SummaryNatural peatlands regulate greenhouse gas (GHG) fluxes through a permanently high groundwater table, causing carbon dioxide (CO2) assimilation but methane (CH4) emissions due to anaerobic conditions. By contrast, drained and disturbed peatlands are hotspots for CO2 and nitrous oxide (N2O) emissions, while CH4 release is low but high from drainage ditches. Generally, in low‐latitude (tropical
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Two antagonistic gene regulatory networks drive Arabidopsis root hair growth at low temperature linked to a low‐nutrient environment New Phytol. (IF 8.3) Pub Date : 2025-02-01 Tomás Urzúa Lehuedé, Victoria Berdion Gabarain, Miguel Angel Ibeas, Hernán Salinas‐Grenet, Romina Achá‐Escobar, Tomás C. Moyano, Lucia Ferrero, Gerardo Núñez‐Lillo, Jorge Pérez‐Díaz, María Florencia Perotti, Virginia Natali Miguel, Fiorella Paola Spies, Miguel A. Rosas, Ayako Kawamura, Diana R. Rodríguez‐García, Ah‐Ram Kim, Trevor Nolan, Adrian A. Moreno, Keiko Sugimoto, Norbert Perrimon, Karen A.
Summary Root hair (RH) cells can elongate to several hundred times their initial size, and are an ideal model system for investigating cell size control. Their development is influenced by both endogenous and external signals, which are combined to form an integrative response. Surprisingly, a low‐temperature condition of 10°C causes increased RH growth in Arabidopsis and in several monocots, even
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Towards a global understanding of tree mortality New Phytol. (IF 8.3) Pub Date : 2025-01-31
Rates of tree mortality are increasing globally, with implications for forests and climate. Yet, how and why these trends vary globally remain unknown. Developing a comprehensive assessment of global tree mortality will require systematically integrating data from ground-based long-term forest monitoring with large-scale remote sensing. We surveyed the metadata from 466 865 forest monitoring plots
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Leaf carbon monoxide emissions under different drought, heat, and light conditions in the field New Phytol. (IF 8.3) Pub Date : 2025-01-31 Jonathan D. Muller, Rafat Qubaja, Eugene Koh, Rafael Stern, Yasmin L. Bohak, Fyodor Tatarinov, Eyal Rotenberg, Dan Yakir
Summary Carbon monoxide (CO) is known primarily as a globally emitted by‐product of incomplete combustion from the industry and biomass burning. However, CO is also produced in living plants and acts as a stress‐signalling molecule in animals and plants. While CO emissions from soil and litter decomposition have been studied, research on the CO flux from living vegetation is scarce, particularly under
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Off‐target drift of the herbicide dicamba disrupts plant–pollinator interactions via novel pathways New Phytol. (IF 8.3) Pub Date : 2025-01-31 Regina S. Baucom, Veronica Iriart, Anah Soble, Matthew R. Armstrong, Tia‐Lynn Ashman
Summary While herbicide use in agriculture is expected to have many effects on surrounding weed communities, it is largely unknown how plant exposure to sublethal doses of herbicide may subsequently impact plant–pollinator interactions. We tested the hypothesis that sublethal herbicide exposure indirectly alters plant–pollinator interactions through changes in plant traits, and specifically through
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HOS15 impacts DIL9 protein stability during drought stress in Arabidopsis New Phytol. (IF 8.3) Pub Date : 2025-01-31 Shah Zareen, Akhtar Ali, Junghoon Park, Sang‐Mo Kang, In‐Jung Lee, Jose M. Pardo, Dae‐Jin Yun, Zheng‐Yi Xu
Summary HIGH EXPRESSION OF OSMOTICALLY RESPONSIVE GENE 15 (HOS15) acts as a substrate receptor of E3 ligase complex, which plays a negative role in drought stress tolerance. However, whether and how HOS15 participates in controlling important transcriptional regulators remains largely unknown. Here, we report that HOS15 physically interacts with and tightly regulates DROUGHT‐INDUCED LIKE 19 (DIL9)
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New insights into the leaf economic spectrum could benefit terrestrial models New Phytol. (IF 8.3) Pub Date : 2025-01-31 Anna B. Harper, Simon Jones
In an article recently published in New Phytologist, Asao et al. (2024; doi: 10.1111/nph.20315) describe results from a global dataset that suggest a relationship between leaf approaches to resource acquisition (the ‘leaf economic spectrum’ (LES)) and the residence time of nonstructural carbohydrates (NSCs) in leaves. Interestingly, this finding could also help models of the terrestrial carbon cycle
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GS2 cooperates with IPA1 to control panicle architecture New Phytol. (IF 8.3) Pub Date : 2025-01-31 Yueying Wang, Yang Lv, Yi Wen, Junge Wang, Peng Hu, Kaixiong Wu, Bingze Chai, Shuxian Gan, Jialong Liu, Yue Wu, Lixin Zhu, Nannan Dong, Yiqing Tan, Hao Wu, Guangheng Zhang, Li Zhu, Deyong Ren, Qiang Zhang, Yuexing Wang, Qian Qian, Jiang Hu
Summary Panicle size and grain number are important agronomic traits that determine grain yield in rice. However, the underlying mechanism regulating panicle size and grain number remains largely unknown. Here, we report that GS2 plays an important role in regulating panicle architecture. The RNAi of GS2™ (target site mutation, TM) produced erect and dense panicle with increased primary and secondary
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Two homologous Zn2Cys6 transcription factors play crucial roles in host specificity of Colletotrichum orbiculare by controlling the expression of cucurbit‐specific virulence effectors New Phytol. (IF 8.3) Pub Date : 2025-01-30 Ru Zhang, Yoshihiro Inoue, Suthitar Singkaravanit‐Ogawa, Taiki Ogawa, Kazuyuki Mise, Akira Mine, Yoshitaka Takano
Summary Fungal plant pathogens preferentially express a set of effector genes at specific infection stages to successfully colonize the host. However, it remains unclear how effector gene expression is regulated during host infection. This study identified a Zn2Cys6 transcription factor, TFV1 (Transcription Factor for Virulence 1), whose deletion weakened virulence of Colletotrichum orbiculare on its
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Alternative transcriptional initiation of OsβCA1 produces three distinct subcellular localization isoforms involved in stomatal response regulation and photosynthesis in rice New Phytol. (IF 8.3) Pub Date : 2025-01-30 Cui Mao, Jie Zheng, Enlong Shen, Baolong Sun, Hao Wu, Yi Xu, Weifeng Huang, Xinghua Ding, Yongjun Lin, Taiyu Chen
Summary Plants adjust the size of their stomatal openings to balance CO2 intake and water loss. Carbonic anhydrases (CAs) facilitate the conversion between CO2 and HCO3−, and the OsβCA1 mutant in rice (Oryza sativa) shows similar traits in carbon fixation and stomatal response to CO2 as the dual βCA mutants in Arabidopsis thaliana. However, the exact role of OsβCA1 in these processes was unclear. We
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ZmNPF7.10 confers potassium and nitrogen distribution from node to leaf in maize New Phytol. (IF 8.3) Pub Date : 2025-01-30 Yingying Hu, Man Zhang, Kangqi Wang, Peipei Tan, Si Jing, Wu Han, Shuwei Wang, Kaina Zhang, Xiaoming Zhao, Xiaohong Yang, Yi Wang
Summary In graminaceous plants, nodes play vital roles in nutrient allocation, especially for preferential nutrient distribution to developing leaves and reproductive organs. However, the molecular mechanisms underlying this distribution remain poorly understood. In this study, we identified a transporter named ZmNPF7.10 that is involved in potassium (K) and nitrogen (N) distribution in maize nodes
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Blocking constitutive autophagy rescues the loss of acquired heat resistance in Arabidopsis fes1a New Phytol. (IF 8.3) Pub Date : 2025-01-30 Xuezhi Li, Tong Su, Xiaofeng Wang, Yan Liu, Jingjing Ge, Panfei Huo, Yiwu Zhao, Tongtong Wang, Hongbin Yu, Meijie Duan, Yuebin Jia, Xianpeng Yang, Pingping Wang, Qingqiu Gong, Jian Liu, Changle Ma
Summary High temperature is one of several major abiotic stresses that can cause substantial loss of crop yields. Heat shock proteins (HSPs) are key components of heat stress resistance. Mutation of FES1A, an auxiliary molecular chaperone of HSP70, leads to defective acquired thermotolerance. Autophagy is a positive regulator of basal thermotolerance and a negative regulator of heat stress memory,
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Rigorous mathematical modeling and physiological experimentation reveal that Ralstonia wilt pathogens consume an in planta diet of amino acids with a dash of sugar New Phytol. (IF 8.3) Pub Date : 2025-01-30 Corri D. Hamilton, Tiffany M. Lowe‐Power
Ralstonia are infamously aggressive bacterial wilt pathogens that invade plant roots and spread through the xylem vessel network. The pathogen population grows tremendously within the xylem vessels and then extensively in the stem cortex apoplast. The biomass accumulation clogs the xylem vessels, causing a fatal wilt disease. Despite knowing the infection outcome, linking pathogen physiology to population
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A transcription factor SlWRKY71 activated the H2S generating enzyme SlDCD1 enhancing the response to Pseudomonas syringae pv DC3000 in tomato leaves New Phytol. (IF 8.3) Pub Date : 2025-01-30 Yu‐Qi Zhao, Chen Sun, Kang‐Di Hu, Yue Yu, Zhi Liu, Ying‐Chun Song, Ren‐Jie Xiong, Yue Ma, Hua Zhang, Gai‐Fang Yao
Summary H2S is a well‐known gaseous signaling molecule that plays important roles in plant response to biotic stresses. Pseudomonas syringae pv tomato (Pst) could cause enormous loss, while whether H2S could modulate plant defense against Pst is still unclear. By CRISPR/Cas9, the Sldcd1 gene editing mutant showed reduced endogenous H2S content and attenuated resistance, whereas treatment with exogenous
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California annual grass phenology and allometry influence ecosystem dynamics and fire regime in a vegetation demography model New Phytol. (IF 8.3) Pub Date : 2025-01-30 Xiulin Gao, Charles D. Koven, Marcos Longo, Zachary Robbins, Polly Thornton, Alex Hall, Samuel Levis, Stefan Rahimi, Chonggang Xu, Lara M. Kueppers
Summary Grass‐dominated ecosystems cover wide areas of the land surface yet have received far less attention from the Earth System Model (ESM) community. This limits model projections of ecosystem dynamics in response to global change and coupled vegetation–climate dynamics. We used the Functionally Assembled Terrestrial Ecosystem Simulator (FATES), a dynamic vegetation demography model, to determine
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Phylogenetic and biochemical drivers of plant species variation in organic compound hydrogen stable isotopes: novel mechanistic constraints New Phytol. (IF 8.3) Pub Date : 2025-01-30 Jochem Baan, Meisha Holloway‐Phillips, Daniel B. Nelson, Jurriaan M. de Vos, Ansgar Kahmen
Summary Significant variation in plant organic compound hydrogen stable isotope (δ2H) values among species from a single location suggests species biochemistry diversity as a key driver. However, the biochemical mechanisms and the biological relevance behind this species‐specific δ2H variation remain unclear. We analyzed δ2H values of cellulose and n‐alkanes across 179 eudicot species in a botanical
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Evolution and diversification of the momilactone biosynthetic gene cluster in the genus Oryza New Phytol. (IF 8.3) Pub Date : 2025-01-30 Santiago Priego‐Cubero, Youming Liu, Tomonobu Toyomasu, Michael Gigl, Yuto Hasegawa, Hideaki Nojiri, Corinna Dawid, Kazunori Okada, Claude Becker
Summary Plants are master chemists and collectively are able to produce hundreds of thousands of different organic compounds. The genes underlying the biosynthesis of many specialized metabolites are organized in biosynthetic gene clusters (BGCs), which is hypothesized to ensure their faithful coinheritance and to facilitate their coordinated expression. In rice (Oryza sativa), momilactones are diterpenoids
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An OsRPP13 protein contributes to rice resistance against herbivorous insects New Phytol. (IF 8.3) Pub Date : 2025-01-30 Feilong Ma, Jiaoyang Chen, Zhipeng Lu, Zhuo Wang, Feixiang Ma, Siqi Zhao, Denan Wu, Xianhe Guo, Man Qi, Gongyi Song, Jiaran Zhao, Mengtian Wen, Yuan Wang, Meng Zhang, Yiting Guo, Xinyuan Xiao, Yilian Zhou, Xinyao Xu, Jiaqi Zhang, Qinzheng Wang, Zhihuan Tao, Bo Sun, Su Chen
Rice (Oryza sativa) is one of the world's most vital crops. Rice production faces significant threats from insect pests such as the brown planthopper (Nilaparvata lugens, BPH) and the striped stem borer (Chilo suppressalis, SSB) (Deng et al., 2024; Kuai et al., 2024). The piercing-sucking insect BPH directly damages rice plants by extracting phloem sap and transmitting various viral diseases. In field
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A positive feedback loop of cytokinin signaling ensures efficient de novo shoot regeneration in Arabidopsis New Phytol. (IF 8.3) Pub Date : 2025-01-29 Kyounghee Lee, Hobin Yoon, Ok‐Sun Park, Pil Joon Seo
Introduction Plants possess a remarkable ability to regenerate tissues, which enables the healing of wounds and the induction of de novo organogenesis. In vitro plant tissue culture techniques are based on the regenerative capacity of plants and facilitate the reprogramming of differentiated somatic cells into a new organ or even an entire plant (Sugimoto et al., 2010). Differentiated plant tissues
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Epigenetic state and gene expression remain stable after CRISPR/Cas‐mediated chromosomal inversions New Phytol. (IF 8.3) Pub Date : 2025-01-29 Solmaz Khosravi, Rebecca Hinrichs, Michelle Rönspies, Reza Haghi, Holger Puchta, Andreas Houben
Summary The epigenetic state of chromatin, gene activity and chromosomal positions are interrelated in plants. In Arabidopsis thaliana, chromosome arms are DNA‐hypomethylated and enriched with the euchromatin‐specific histone mark H3K4me3, while pericentromeric regions are DNA‐hypermethylated and enriched with the heterochromatin‐specific mark H3K9me2. We aimed to investigate how the chromosomal location
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The asymmetry engine: how plants harness asymmetries to shape their bodies New Phytol. (IF 8.3) Pub Date : 2025-01-28 Kristoffer Jonsson, Anne‐Lise Routier‐Kierzkowska, Rishikesh P. Bhalerao
SummaryPlant development depends on growth asymmetry to establish body plans and adapt to environmental stimuli. We explore how plants initiate, propagate, and regulate organ‐wide growth asymmetries. External cues, such as light and gravity, and internal signals, including stochastic cellular growth variability, drive these asymmetries. The plant hormone auxin orchestrates growth asymmetry through
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Metabolic modeling identifies determinants of thermal growth responses in Arabidopsis thaliana New Phytol. (IF 8.3) Pub Date : 2025-01-25 Philipp Wendering, Gregory M. Andreou, Roosa A. E. Laitinen, Zoran Nikoloski
Summary Temperature is a critical environmental factor affecting nearly all plant processes, including growth, development, and yield. Yet, despite decades of research, we lack the ability to predict plant performance at different temperatures, limiting the development of climate‐resilient crops. Further, there is a pressing need to bridge the gap between the prediction of physiological and molecular
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Glycoside‐specific metabolomics reveals the novel mechanism of glycinebetaine‐induced cold tolerance by regulating apigenin glycosylation in tea plants New Phytol. (IF 8.3) Pub Date : 2025-01-25 Shan Huang, Sasa Zhang, Xuejing Ma, Xin Zheng, Yaojia Liu, Qinghua Zhu, Xiaoqin Luo, Jilai Cui, Chuankui Song
Summary Glycosylation is a key modification that affects secondary metabolites under stress and is influenced by glycinebetaine (GB) to regulate plant stress tolerance. However, the complexity and detection challenges of glycosides hinder our understanding of the regulatory mechanisms of their metabolic interaction with GB during stress. A glycoside‐specific metabolomic approach utilizing cone voltage‐induced
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When lettuce bolts: natural selection vs artificial selection and beyond New Phytol. (IF 8.3) Pub Date : 2025-01-25 Dandan Yang, Cao Xu
Bolting, the phase transition from vegetative to reproductive development, is a critical step of flowering plants. Determining the timing of bolting is a pivotal life history trait that has evolved over time to optimize reproductive success across diverse environments (Jung & Müller, 2009). In crops like lettuce (Lactuca sativa L.), which is primarily cultivated for its edible rosette leaves, bolting
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Stand density and local climate drive allocation of GPP to aboveground woody biomass New Phytol. (IF 8.3) Pub Date : 2025-01-23 Steven A. Kannenberg, Flurin Babst, Mallory L. Barnes, Antoine Cabon, Matthew P. Dannenberg, Miriam R. Johnston, William R. L. Anderegg
Summary The partitioning of photosynthate among various forest carbon pools is a key process regulating long‐term carbon sequestration, with allocation to aboveground woody biomass carbon (AGBC) in particular playing an outsized role in the global carbon cycle due to its slow residence time. However, directly estimating the fraction of gross primary productivity (GPP) that goes to AGBC has historically
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Proximal remote sensing: an essential tool for bridging the gap between high‐resolution ecosystem monitoring and global ecology New Phytol. (IF 8.3) Pub Date : 2025-01-23 Zoe Amie Pierrat, Troy S. Magney, Will P. Richardson, Benjamin R. K. Runkle, Jen L. Diehl, Xi Yang, William Woodgate, William K. Smith, Miriam R. Johnston, Yohanes R. S. Ginting, Gerbrand Koren, Loren P. Albert, Christopher L. Kibler, Bryn E. Morgan, Mallory Barnes, Adriana Uscanga, Charles Devine, Mostafa Javadian, Karem Meza, Tommaso Julitta, Giulia Tagliabue, Matthew P. Dannenberg, Michal Antala
SummaryA new proliferation of optical instruments that can be attached to towers over or within ecosystems, or ‘proximal’ remote sensing, enables a comprehensive characterization of terrestrial ecosystem structure, function, and fluxes of energy, water, and carbon. Proximal remote sensing can bridge the gap between individual plants, site‐level eddy‐covariance fluxes, and airborne and spaceborne remote
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Pollination efficiency and the evolution of sex allocation – diminishing returns matter New Phytol. (IF 8.3) Pub Date : 2025-01-23 Lawrence D. Harder, Steven D. Johnson
SummaryImmobility of flowering plants requires them to engage pollen vectors to outcross, introducing considerable inefficiency in the conversion of pollen production into sired seeds. Whether inefficiencies influence the evolution of the relative resource allocation to female and male functions has been debated for more than 40 years. Whereas early models suggested no effect, negative interspecific
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Stress resilience in plants: the complex interplay between heat stress memory and resetting New Phytol. (IF 8.3) Pub Date : 2025-01-23 Tobias Staacke, Bernd Mueller‐Roeber, Salma Balazadeh
SummaryHeat stress (HS) poses a major challenge to plants and agriculture, especially during climate change‐induced heatwaves. Plants have evolved mechanisms to combat HS and remember past stress. This memory involves lasting changes in specific stress responses, enabling plants to better anticipate and react to future heat events. HS memory is a multi‐layered cellular phenomenon that, in addition
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Transgene‐free genome editing in poplar New Phytol. (IF 8.3) Pub Date : 2025-01-22 Lennart Hoengenaert, Chantal Anders, Jan Van Doorsselaere, Ruben Vanholme, Wout Boerjan
Summary Precise gene‐editing methods are valuable tools to enhance genetic traits. Gene editing is commonly achieved via stable integration of a gene‐editing cassette in the plant's genome. However, this technique is unfavorable for field applications, especially in vegetatively propagated plants, such as many commercial tree species, where the gene‐editing cassette cannot be segregated away without
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Inorganic nitrogen and organic matter jointly regulate ectomycorrhizal fungi‐mediated iron acquisition New Phytol. (IF 8.3) Pub Date : 2025-01-22 Haihua Wang, Kaile Zhang, Ryan Tappero, Tiffany W. Victor, Jennifer M. Bhatnagar, Rytas Vilgalys, Hui‐Ling Liao
Summary Ectomycorrhizal fungi (EMF) play a crucial role in facilitating plant nutrient uptake from the soil although inorganic nitrogen (N) can potentially diminish this role. However, the effect of inorganic N availability and organic matter on shaping EMF‐mediated plant iron (Fe) uptake remains unclear. To explore this, we performed a microcosm study on Pinus taeda roots inoculated with Suillus cothurnatus
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Cell proliferation suppressor RBR1 interacts with ARID1 to promote pollen mitosis via stabilizing DUO1 in Arabidopsis New Phytol. (IF 8.3) Pub Date : 2025-01-21 Lei Li, Qianqian Hu, Yi Zhao, Ting Jiang, Huaihao Yang, Binglian Zheng
Summary In plants, sperm cell formation involves two rounds of pollen mitoses, in which the microspore initiates the first pollen mitosis (PMI) to produce a vegetative cell and a generative cell, then the generative cell continues the second mitosis (PMII) to produce two sperm cells. DUO1, a R2R3 Myb transcription factor, is activated in the generative cell to promote S‐G2/M transition during PMII
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Concurrent common fungal networks formed by different guilds of fungi New Phytol. (IF 8.3) Pub Date : 2025-01-21 Matthias C. Rillig, Anika Lehmann, Ian R. Mounts, Beatrice M. Bock
Introduction Networks formed by fungi that link among plants have captured the imagination of scientists and the wider public alike (Selosse et al., 2006; Karst et al., 2023). This work on fungal connections among plant roots has almost exclusively focused on mycorrhizal fungi, with most work focusing on arbuscular mycorrhizal and ectomycorrhizal fungi; other groups of mycorrhiza, such as ericoid mycorrhiza
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Apoplastic pH is a chemical switch for extracellular H2O2 signaling in abscisic acid‐mediated inhibition of cotyledon greening New Phytol. (IF 8.3) Pub Date : 2025-01-21 Miao Zhou, Jia Yuan Ye, Yi Ju Shi, Yi Jie Jiang, Yao Zhuang, Qing Yang Zhu, Xing Xing Liu, Zhong Jie Ding, Shao Jian Zheng, Chong Wei Jin
Summary The apoplastic pH (pHApo) in plants is susceptible to environmental stimuli. However, the biological implications of pHApo variation have remained largely unknown. The universal stress phytohormone abscisic acid (ABA) as well as the major environmental stimuli drought and salinity were selected as representative cases to investigate how changes in pHApo relate to plant behaviors in Arabidopsis
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Charlotte Grossiord New Phytol. (IF 8.3) Pub Date : 2025-01-20
What inspired your interest in plant science? I have always been passionate about plant science. I think it all started with my upbringing in Africa. I grew up in different countries with climates ranging from tropical to semi-arid, so I was constantly surrounded by nature and exposed to an incredible variety of ecosystems. It was impossible not to fall in love with the diversity of plant life. As
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Two reductases complete steroidal glycoalkaloids biosynthesis in potato New Phytol. (IF 8.3) Pub Date : 2025-01-17 Ryota Akiyama, Daiki Terami, Aozora Noda, Bunta Watanabe, Naoyuki Umemoto, Toshiya Muranaka, Kazuki Saito, Yukihiro Sugimoto, Masaharu Mizutani
Summary Steroidal glycoalkaloids (SGAs) are specialized metabolites primarily produced by Solanaceae plants such as potatoes and tomatoes. Notably, α‐solanine and α‐chaconine are recognized as toxic substances in potatoes. While the biosynthetic pathways of SGAs are largely understood, the final steps of α‐solanine and α‐chaconine biosynthesis remained elusive. In this study, we discovered that two
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Aging-dependent temporal regulation of MIR156 epigenetic silencing by CiLDL1 and CiNF-YB8 in chrysanthemum New Phytol. (IF 8.3) Pub Date : 2025-01-17 Xuekai Gao, Lei Liu, Tianle Wang, Chuyan Jiang, Yujin Xue, Yahui Sun, Zhaoyu Gu, Yanjie Xu, Cai-Zhong Jiang, Junping Gao, Bo Hong, Chao Ma
Temporal decline in microRNA miR156 expression is crucial for the transition to, and maintenance of, the adult phase and flowering competence in flowering plants. However, the molecular mechanisms underlying the temporal regulation of miR156 reduction remain largely unknown. Here, we investigated the epigenetic mechanism regulating the temporal silencing of cin-MIR156 in wild chrysanthemum (Chrysanthemum
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Insights into the subdaily variations in methane, nitrous oxide and carbon dioxide fluxes from upland tropical tree stems New Phytol. (IF 8.3) Pub Date : 2025-01-17 Laëtitia M. Bréchet, Roberto L. Salomόn, Katerina Machacova, Clément Stahl, Benoît Burban, Jean‐Yves Goret, Kathy Steppe, Damien Bonal, Ivan A. Janssens
Summary Recent studies have shown that stem fluxes, although highly variable among trees, can alter the strength of the methane (CH4) sink or nitrous oxide (N2O) source in some forests, but the patterns and magnitudes of these fluxes remain unclear. This study investigated the drivers of subdaily and seasonal variations in stem and soil CH4, N2O and carbon dioxide (CO2) fluxes. CH4, N2O and CO2 fluxes
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At least two functions for BdMUTE during the development of stomatal complexes in Brachypodium distachyon New Phytol. (IF 8.3) Pub Date : 2025-01-15 Laura Serna
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MEDIATOR15 destabilizes DELLA protein to promote gibberellin‐mediated plant development New Phytol. (IF 8.3) Pub Date : 2025-01-14 Naohiko Ohama, Teck Lim Moo, KwiMi Chung, Nobutaka Mitsuda, Kulaporn Boonyaves, Daisuke Urano, Nam‐Hai Chua
Summary Mediator, a transcriptional coactivator, regulates plant growth and development by interacting with various transcriptional regulators. MEDIATOR15 (MED15) is a subunit in the Mediator complex potentially involved in developmental control. To uncover molecular functions of Arabidopsis MED15 in development, we searched for its interactors. MED15 was found to interact with DELLA proteins, which
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The aerial epidermis is a major site of quinolizidine alkaloid biosynthesis in narrow-leafed lupin New Phytol. (IF 8.3) Pub Date : 2025-01-14 Karen Michiko Frick, Marcus Daniel Brandbjerg Bohn Lorensen, Nikola Micic, Eddi Esteban, Asher Pasha, Alexander Schulz, Nicholas James Provart, Hussam Hassan Nour-Eldin, Nanna Bjarnholt, Christian Janfelt, Fernando Geu-Flores
Introduction Plants produce an immense array of specialized metabolites with important applications in the agricultural, pharmaceutical, and food industries. The biosynthesis and accumulation of plant specialized metabolites are often under strict control, being synthesized in specific cell-types/tissues and often stored in others. For example, in the Solanaceae family, the first steps of tropane alkaloid
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From division to ‘divergence’: to understand wood growth across timescales, we need to (learn to) manipulate it New Phytol. (IF 8.3) Pub Date : 2025-01-13 Valentina Buttò, Drew M. P. Peltier, Tim Rademacher
SummaryWood formation is the Rosetta stone of tree physiology: a traceable, integrated record of physiological and morphological status. It also produces a large and persistent annual sink for terrestrial carbon, motivating predictive understanding. Xylogenesis studies have greatly expanded our knowledge of the intra‐annual controls on wood formation, while dendroecology has quantified the environmental
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Flexible or fortified? How lichens balance defence strategies across climatic harshness gradients New Phytol. (IF 8.3) Pub Date : 2025-01-11 Inger K. de Jonge, Peter Convey, Ingeborg J. Klarenberg, Johannes H. C. Cornelissen, Stef Bokhorst
SummaryLichens play important roles in habitat formation and community succession in polar and alpine ecosystems. Despite their significance, the ecological effects of lichen traits remain poorly researched. We propose a trait trade‐off for managing light exposure based on climatic harshness. In the harshest cold environments, where abiotic stress predominates over biotic pressures, lichens should
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A test of the Grant–Stebbins pollinator-shift model of floral evolution New Phytol. (IF 8.3) Pub Date : 2025-01-10 Matthew Moir, Hannah Butler, Craig Peter, Tony Dold, Ethan Newman
Introduction ‘Since selection is a quantitative process, the characteristics of the flower will be molded by those pollinators that visit it most frequently and effectively in the region where it is evolving. Hence when an evolutionist speaks of a “bee flower” or a “hummingbird flower,” he refers to its relationship with the predominant and most effective vector. He does not mean that the flower is
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The evolutionary history evident in grass pollen morphology New Phytol. (IF 8.3) Pub Date : 2025-01-10 Surangi W. Punyasena
The most significant limiting factor in palynology is taxonomic resolution. Our inability to recognize species and sometimes even genera within plant families limits the ecological and evolutionary inferences that are possible with the fossil pollen and spore record (Mander & Punyasena, 2014). With no other clade is this limitation more apparent than within the grasses. There are c. 11 800 Poaceae
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Elevated CO2 alters soybean physiology and defense responses, and has disparate effects on susceptibility to diverse microbial pathogens New Phytol. (IF 8.3) Pub Date : 2025-01-10 Melissa Bredow, Ekkachai Khwanbua, Aline Sartor Chicowski, Yunhui Qi, Matthew W. Breitzman, Katerina L. Holan, Peng Liu, Michelle A. Graham, Steven A. Whitham
Summary Increasing atmospheric CO2 levels have a variety of effects that can influence plant responses to microbial pathogens. However, these responses are varied, and it is challenging to predict how elevated CO2 (eCO2) will affect a particular plant–pathogen interaction. We investigated how eCO2 may influence disease development and responses to diverse pathogens in the major oilseed crop, soybean
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Tip-to-base bark cross-sectional areas contribute to understanding the drivers of carbon allocation to bark and the functional roles of bark tissues New Phytol. (IF 8.3) Pub Date : 2025-01-09 Karen Vázquez-Segovia, Mark E. Olson, Julio Campo, Guillermo Ángeles, Cristina Martínez-Garza, Susanne Vetter, Julieta A. Rosell
Along their lengths, stems experience different functional demands. Because bark and wood traits are usually studied at single points on stems, it remains unclear how carbon allocation changes along tip-to-base trajectories across species. We examined bark vs wood allocation by measuring cross-sectional areas of outer and inner bark (OB and IB), IB regions (secondary phloem, cortex, and phelloderm)
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Manipulating stomatal aperture by silencing StSLAC1 affects potato plant–herbivore–parasitoid tritrophic interactions under drought stress New Phytol. (IF 8.3) Pub Date : 2025-01-08 Xiaoli He, Yizhou Wang, Asim Munawar, Jinxian Zhu, Jian Zhong, Yadong Zhang, Han Guo, Zengrong Zhu, Ian T. Baldwin, Wenwu Zhou
The effects of drought stress on stomatal opening dynamics, plant volatile organic compound (VOC) emissions and plant–insect interactions have been well-documented individually, but how they interact mechanistically remains poorly studied. Here, we studied how drought-triggered stomatal closure affects VOC emission and plant–trophic interactions by combining RNAi silencing, molecular biological and
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A 2OGD multi-gene cluster encompasses functional and tissue specificity that direct furanocoumarin and pyranocoumarin biosynthesis in citrus New Phytol. (IF 8.3) Pub Date : 2025-01-08 Livnat Goldenberg, Sandip Annasaheb Ghuge, Adi Doron-Faigenboim, Mira Carmeli-Weissberg, Felix Shaya, Ada Rozen, Yardena Dahan, Elena Plesser, Gilor Kelly, Yossi Yaniv, Tal Arad, Ron Ophir, Amir Sherman, Nir Carmi, Yoram Eyal
Furanocoumarins (FCs) are plant defence compounds derived from the phenylpropanoid pathway via the coumarin umbelliferone that harbour some therapeutic benefits yet are the underlying cause of ‘grapefruit–drug interactions’ in humans. Most of the pathway genes have not been identified in citrus. We employed a genetic/Omics approach on citrus ancestral species and F1 populations of mandarin × grapefruit
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Lineage-specific patterns in the Moraceae family allow identification of convergent P450 enzymes involved in furanocoumarin biosynthesis New Phytol. (IF 8.3) Pub Date : 2025-01-08 Alexandre Bouillé, Romain Larbat, Rashmi Kumari, Alexandre Olry, Clément Charles, David R. Nelson, Janet Thornton, Cloé Villard, Alain Hehn
Specialized metabolites are molecules involved in plants' interaction with their environment. Elucidating their biosynthetic pathways is a challenging but rewarding task, leading to societal applications and ecological insights. Furanocoumarins emerged multiple times in Angiosperms, raising the question of how different enzymes evolved into catalyzing identical reactions. To identify enzymes producing
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Soil microbes influence the ecology and evolution of plant plasticity New Phytol. (IF 8.3) Pub Date : 2025-01-08 Lana G. Bolin
Stress often induces plant trait plasticity, and microbial communities also alter plant traits. Therefore, it is unclear how much plasticity results from direct plant responses to stress vs indirect responses due to stress-induced changes in soil microbial communities. To test how microbes and microbial community responses to stress affect the ecology and potentially the evolution of plant plasticity
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Insertion of the β-ketoacyl-CoA synthase MdKCS2 promoter segment causes wax biosynthesis difference in apple peel New Phytol. (IF 8.3) Pub Date : 2025-01-08 Lizhi Zhang, Shaobo Yin, Mingqian Wang, Zhi Liu, Tianxing Lv, Yanan Wang, Aide Wang, Dongmei Tan, Yinglin Ji
Cuticular wax is essential for fruit to maintain moisture. Although the wax content of peel surface in apple (Malus spp.) varies, the detailed molecular mechanism remains unclear. Here, we identified the β-ketoacyl-CoA synthase 2 (MdKCS2) differentially expressed between apple peel with low and high wax content by integrating bulked segregant analysis-sequencing and RNA-seq. We found that a 63-bp insertion