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CEP-CEPR1 Signalling in Cereal Crops: Integrating Nitrogen Demand, Root System Architecture, and Drought Resilience. 谷类作物CEP-CEPR1信号:氮需求、根系结构和抗旱性的整合
IF 6.9 1区 生物学
Plant, Cell & Environment Pub Date : 2026-11-01 Epub Date: 2026-07-12 DOI: 10.1111/pce.70746
Baber Ali, Zeeshan Khan, Nijat Imin
{"title":"CEP-CEPR1 Signalling in Cereal Crops: Integrating Nitrogen Demand, Root System Architecture, and Drought Resilience.","authors":"Baber Ali, Zeeshan Khan, Nijat Imin","doi":"10.1111/pce.70746","DOIUrl":"10.1111/pce.70746","url":null,"abstract":"<p><p>Cereal crops collectively account for more than half of global human caloric intake, yet the molecular mechanisms governing their root systems under water and nitrogen limitation remain poorly understood relative to their agronomic importance. The C-terminally encoded peptide (CEP) family has emerged, primarily from work in Arabidopsis thaliana and Medicago truncatula, as a class of post-translationally modified peptide hormones that coordinate nitrogen demand signalling through a root-to-shoot-to-root relay involving CEPR1 leucine-rich repeat receptor-like kinases and phloem-mobile CEPD glutaredoxins, regulate lateral root gravitropic set-point angle through integrated auxin and cytokinin pathway interactions, and contribute to abiotic stress responses through stabilisation of AUX/IAA transcriptional repressors under osmotic stress. This review synthesises CEP biology with the specific architectural and agronomic characteristics of cereal root systems, explicitly distinguishing between findings established in model dicots, evidence for receptor-ligand conservation in cereals, and mechanisms that remain untested in crops. CEPR1 orthologues in barley, maize, and rice restore wild-type phenotypes in Arabidopsis complementation assays, and CRISPR-Cas9 knockout of CEPR1 in barley confirms effects on seminal root angle, though an associated fecundity defect highlights translational complexity. Proposed connections between CEP signalling and ABA pathways remain hypothetical. In wheat, TaCEP15 modulates primary root length and drought tolerance through a receptor pathway mechanistically distinct from the canonical CEP-CEPR1-CEPD nitrogen relay, indicating functional diversification within the CEP family. Five tractable research priorities are identified, and CRISPR-based approaches, synthetic peptide application, and marker-assisted selection are discussed as near-term strategies for cereal crop improvement under drought and nitrogen-limited conditions.</p>","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":"8195-8210"},"PeriodicalIF":6.9,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148429478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Sympatric Oaks Exhibit Local Divergence and Convergence in Adaptive Strategies Along Climate Gradients. 同域栎树在气候梯度上表现出局地辐散和趋同的适应策略。
IF 6.9 1区 生物学
Plant, Cell & Environment Pub Date : 2026-11-01 Epub Date: 2026-07-09 DOI: 10.1111/pce.70742
Yuan Lai, Yutong Lin, Songbo Tang, Jordi Sardans, Josep Peñuelas, Canyue Sun, Jianfeng Liu, Yuanwen Kuang
{"title":"Sympatric Oaks Exhibit Local Divergence and Convergence in Adaptive Strategies Along Climate Gradients.","authors":"Yuan Lai, Yutong Lin, Songbo Tang, Jordi Sardans, Josep Peñuelas, Canyue Sun, Jianfeng Liu, Yuanwen Kuang","doi":"10.1111/pce.70742","DOIUrl":"10.1111/pce.70742","url":null,"abstract":"<p><p>The coexistence mechanisms of wide-ranging species across climate gradients are crucial for predicting their geographic range shift and community assembly. Two coexisting oaks (Quercus acutissima and Quercus variabilis) were sampled from broad-leaved forests across China. Fifteen plant functional traits related to morphology, physiology and stoichiometry were determined to assess the interspecific and intraspecific variability, trait integration and ecological strategies. Nine among the 15 studied functional traits differed significantly between the two oaks. Given all the studied traits, the two oaks exhibited similar intraspecific variability (29.0 vs. 27.9), but diverged trait-level variability, with Q. acutissima showing 13.1% lower morphological but 11.4% higher physiological variability than Q. variabilis. The connectivity and complexity within trait correlation networks of the two oaks covaried across favourable temperature ranges (ca. 15°C-20°C), but diverged below 15°C and above 20°C and along precipitation gradients. Both the oaks were clustered around competitive and stress-tolerant ecological strategies within their sampling ranges; however, Q. variabilis were more competitive but less stress-tolerant than Q. acutissima when growing at their distribution edges. Our results imply local divergent and convergent adaptation of the sympatric oaks via altering trait-level plasticity and trait integration along climate gradients, potentially leading to greater niche differentiation and complex community assembly.</p>","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":"8139-8149"},"PeriodicalIF":6.9,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148409754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Decoding Calcium Signaling: Functional Roles of Calmodulin and Calmodulin‑Like Proteins in Plant Development and Stress Responses. 解码钙信号:钙调素和钙调素样蛋白在植物发育和胁迫反应中的功能作用。
IF 6.9 1区 生物学
Plant, Cell & Environment Pub Date : 2026-11-01 Epub Date: 2026-08-07 DOI: 10.1111/pce.70802
Ruixin Jin, Tao Zhang, Xin Bai, Xingpei You, Tayeb Muhammad, Tao Yang, Chunping Jia, Juan Wang, Baike Wang
{"title":"Decoding Calcium Signaling: Functional Roles of Calmodulin and Calmodulin‑Like Proteins in Plant Development and Stress Responses.","authors":"Ruixin Jin, Tao Zhang, Xin Bai, Xingpei You, Tayeb Muhammad, Tao Yang, Chunping Jia, Juan Wang, Baike Wang","doi":"10.1111/pce.70802","DOIUrl":"10.1111/pce.70802","url":null,"abstract":"<p><p>Calcium (Ca<sup>2+</sup>) acts as a ubiquitous secondary messenger in plants, orchestrating adaptive responses to developmental cues and environmental fluctuations. The decoding of these signatures is primarily mediated by calmodulin (CaM) and plant-specific calmodulin-like (CML) protein family. While canonical CaMs are evolutionarily conserved and feature high-affinity-binding motifs, CMLs exhibit substantial sequence divergence and structural variability, enabling functional specialization. This review synthesizes current knowledge on the structural characteristics and functional roles of CaMs and CMLs, emphasizing their pivotal contributions to plant development, stress resilience, and secondary metabolism. We highlight the significance of spatial compartmentalization, wherein the discrete subcellular partitioning of CaM/CMLs-exemplified by chloroplast and nuclear populations-facilitates the refined modulation of photosynthetic efficiency and transcriptional reprogramming. Furthermore, we discuss recent advances in manipulating CaM/CML-mediated pathways to enhance agronomic traits, including yield stability and stress tolerance. Ultimately, these insights provide a theoretical framework for leveraging calcium signaling components in molecular breeding programs aimed at developing elite crop varieties.</p>","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":"8993-9010"},"PeriodicalIF":6.9,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148682796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design Principles of Plant Thermotolerance: Integrating Photosynthesis, Reproduction, and Field Resilience in a Warming Climate. 植物耐热性设计原则:在变暖气候下整合光合作用、繁殖和田间恢复力。
IF 6.9 1区 生物学
Plant, Cell & Environment Pub Date : 2026-11-01 Epub Date: 2026-07-28 DOI: 10.1111/pce.70767
Yuchen Qu, Wataru Yamori
{"title":"Design Principles of Plant Thermotolerance: Integrating Photosynthesis, Reproduction, and Field Resilience in a Warming Climate.","authors":"Yuchen Qu, Wataru Yamori","doi":"10.1111/pce.70767","DOIUrl":"10.1111/pce.70767","url":null,"abstract":"<p><p>Global food security is increasingly threatened by climate change, as rising temperatures compromise the yields of major staple crops, including wheat, rice, and maize. Enhancing plant thermotolerance has therefore become a critical priority for sustaining agricultural productivity. However, plant heat-stress responses have often been described as fragmented and pathway-specific, limiting their translation into effective crop improvement strategies. Here, we synthesize current knowledge of plant responses to heat stress and reframe them as an integrated set of design principles centered on preserving photosynthetic carbon gain under high temperature. By doing so, we provide a collection of insights that may help guide future research efforts and the development of strategies for improving plant thermotolerance. We organize major defense strategies into six functional domains: (i) membrane systems and structural integrity, (ii) photosynthetic regulation, (iii) protective metabolites and hormonal signaling, (iv) reactive oxygen species (ROS) scavenging, (v) protein homeostasis, and (vi) transcriptional and post-transcriptional regulation. Rather than treating these responses as independent pathways, we emphasize their temporal hierarchy, energetic costs, and functional interconnections, highlighting their shared objective-maintaining CO<sub>2</sub> assimilation, energy balance, and biomass accumulation as thermal damage accelerates. We further discuss how insights from mutagenesis, transgenic approaches, and targeted genetic modification can be translated into crop improvement, clarifying opportunities and trade-offs that emerge when thermotolerance is engineered at distinct physiological nodes. Together, this design-centered framework provides a unifying conceptual and practical roadmap for developing high-yielding, heat-tolerant cultivars, offering actionable guidance for sustaining crop productivity in a warming world.</p>","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":"8735-8750"},"PeriodicalIF":6.9,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13646717/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148597043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Water Deficit Does Not Compromise the Resistance to Insect Herbivores in Plants Associated With Fungal Endophytes Able to Produce Bioactive Alkaloids. 水分不足不会影响植物对昆虫食草动物的抗性,真菌内生菌能够产生生物活性生物碱。
IF 6.9 1区 生物学
Plant, Cell & Environment Pub Date : 2026-11-01 Epub Date: 2026-07-17 DOI: 10.1111/pce.70756
Daniel A Bastías, Sandeep Kumar, Sushma Prakash, Wade J Mace, Yulia Morozova, Richard D Johnson
{"title":"Water Deficit Does Not Compromise the Resistance to Insect Herbivores in Plants Associated With Fungal Endophytes Able to Produce Bioactive Alkaloids.","authors":"Daniel A Bastías, Sandeep Kumar, Sushma Prakash, Wade J Mace, Yulia Morozova, Richard D Johnson","doi":"10.1111/pce.70756","DOIUrl":"10.1111/pce.70756","url":null,"abstract":"<p><p>Plants growing in nature are exposed to multiple abiotic and biotic stressors that sometimes occur sequentially. We hypothesised that drought will not compromise the resistance levels to herbivores when plants are associated with Epichloë endophytes able to produce bioactive alkaloids. Lolium perenne plants without (nil) and with Epichloë LpTG-3 sp. strain AR37 able (wild type (wt), ∆idtA) and unable (∆idtM) to produce indole diterpene alkaloids were subjected to a drought treatment followed by a challenge with Rhopalosiphum padi aphids at drought recovery. Drought increased the susceptibility to aphids in both nil and ∆idtM-associated plants, whereas it did not affect the aphid resistance in wt-associated plants. Drought increased the aphid resistance in ∆idtD-associated plants, a response that was related to a drought-mediated increase in concentrations of some AR37-derived alkaloids. The negative effects of drought on plants were alleviated through the AR37 symbiosis via host growth promotion associated with increased concentrations of drought protective phytohormones and amino acids (e.g., abscisic acid and proline), and enriched abundance of bacteria belonging to Agrococcus, Chryseobacterium, and Parcubacteria that contain members providing stress protective traits. Our study highlights the key role of endophytes in increasing the performance of plants challenged by abiotic and biotic stressors.</p>","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":"8481-8496"},"PeriodicalIF":6.9,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13646663/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148467939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Heat Shock Transcription Factor OsHsfA2a Modulates Rice Seed Dormancy and Pre-Harvest Sprouting With OsSD6. 热休克转录因子OsHsfA2a通过OsSD6调控水稻种子休眠和采前发芽
IF 6.9 1区 生物学
Plant, Cell & Environment Pub Date : 2026-11-01 Epub Date: 2026-07-09 DOI: 10.1111/pce.70703
Zhang Dong, Xiaobo Zhu, Haoyuan Chen, Yihan Liu, Qingshan Mu, Ji Tao, Jin Hu, Min Chen, Wenjian Song, Weimin Hu, Ronghui Pan, Yajing Guan
{"title":"The Heat Shock Transcription Factor OsHsfA2a Modulates Rice Seed Dormancy and Pre-Harvest Sprouting With OsSD6.","authors":"Zhang Dong, Xiaobo Zhu, Haoyuan Chen, Yihan Liu, Qingshan Mu, Ji Tao, Jin Hu, Min Chen, Wenjian Song, Weimin Hu, Ronghui Pan, Yajing Guan","doi":"10.1111/pce.70703","DOIUrl":"10.1111/pce.70703","url":null,"abstract":"<p><p>Seed dormancy is a complex developmental and agronomic trait requiring a delicate balance: insufficient dormancy leads to pre-harvest sprouting (PHS), while excessive dormancy causes uneven germination. Understanding the intrinsic mechanisms resolving this trade-off is vital for crop improvement. In this study, our findings indicate that the heat shock transcription factor OsHsfA2a acts as a negative regulator of seed dormancy. The hsfa2a knockout mutants exhibited enhanced PHS resistance while maintaining yield potential and post-harvest germination rates, offering a potential strategy to uncouple PHS resistance from agronomic penalties. Mechanistically, our data suggest that OsHsfA2a self-associates and can activate the ABA catabolic gene OsABA8ox3, thereby promoting dormancy release. Furthermore, genetic analysis using the sd6 hsfa2a double mutant supports the hypothesis that the bHLH transcription factor OsSD6 is epistatic to OsHsfA2a, acting as an upstream initiator. Biochemically, OsSD6 transcriptionally activates OsHsfA2a. Once expressed, OsHsfA2a likely amplifies the signal via a self-activation loop. However, the accumulating OsSD6 protein physically interacts with OsHsfA2a, which we propose competitively attenuates its DNA-binding capacity. These results support a multi-tiered regulatory module operating across both transcriptional and post-translational levels. Collectively, our findings provide insights into an intrinsic physiological mechanism by which this module fine-tunes ABA catabolism to govern primary seed dormancy, providing precise genetic targets for mitigating PHS.</p>","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":"8150-8165"},"PeriodicalIF":6.9,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148417220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Single-Nucleus RNA Sequencing Reveals WRKY12a Regulating Secondary Cell Wall Formation During Xylem Differentiation in Rubber Tree. 单核RNA测序揭示橡胶树木质部分化过程中WRKY12a调控次生细胞壁形成。
IF 6.9 1区 生物学
Plant, Cell & Environment Pub Date : 2026-11-01 Epub Date: 2026-07-12 DOI: 10.1111/pce.70733
Jinjing Pan, Yanhong Xu, Junchao Zhao, Fang Liu, Shaohua Wu, Shixin Zhang, Chun-Peng Song, Jinling Huang, Yongping Yang, Weimin Tian, Guiling Sun
{"title":"Single-Nucleus RNA Sequencing Reveals WRKY12a Regulating Secondary Cell Wall Formation During Xylem Differentiation in Rubber Tree.","authors":"Jinjing Pan, Yanhong Xu, Junchao Zhao, Fang Liu, Shaohua Wu, Shixin Zhang, Chun-Peng Song, Jinling Huang, Yongping Yang, Weimin Tian, Guiling Sun","doi":"10.1111/pce.70733","DOIUrl":"10.1111/pce.70733","url":null,"abstract":"<p><p>Secondary xylem differentiation determines wood structure and function in perennial plants, yet its regulatory mechanisms remain poorly understood in Hevea brasiliensis. Here, we generated a single-nucleus RNA sequencing (snRNA-seq) atlas from the cambium to mature xylem region in stems, resolving transcriptionally distinct cell populations corresponding to cambium, xylem mother cells, and fibre-vessel cells. Pseudotime analysis reconstructed the developmental trajectories from cambium to late xylem cell states and revealed stage-specific activation of secondary cell wall (SCW) biosynthesis programmes. Gene regulatory network analysis identified HbWRKY12a as a fibre-vessel enriched transcription factor functioning as a key regulator in SCW formation. Molecular assays demonstrated that HbWRKY12a directly binds and activates HbMYB1R1c, which subsequently modulates lignin-associated SCW deposition. Heterologous overexpression of either HbWRKY12a or HbMYB1R1c in Arabidopsis resulted in significant reductions in stem diameter and plant height. Both overexpression lines exhibited markedly decreased SCW thickness in fibre, vessels, and pith cells. These findings reveal a WRKY-MYB cascade that mediates SCW formation in H. brasiliensis, extending the classical NAC-MYB regulatory framework and providing molecular targets for improving xylem properties and stress resilience in tropical perennial crops.</p>","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":"8211-8229"},"PeriodicalIF":6.9,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148429490","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A ShbHLH34-ShPUR Module Activates ShTPS1-mediated β-caryophyllene Biosynthesis for Insect Resistance in Sugarcane. ShbHLH34-ShPUR模块激活shtps1介导的甘蔗抗虫β-石竹烯生物合成
IF 6.9 1区 生物学
Plant, Cell & Environment Pub Date : 2026-11-01 Epub Date: 2026-08-06 DOI: 10.1111/pce.70789
Yue-Han Zhao, Ya-Xin Zhang, Lin Li, Ya-Li Wu, Hua-Ying Fu, Honglin Feng, Wei Yao, San-Ji Gao, Jin-da Wang
{"title":"A ShbHLH34-ShPUR Module Activates ShTPS1-mediated β-caryophyllene Biosynthesis for Insect Resistance in Sugarcane.","authors":"Yue-Han Zhao, Ya-Xin Zhang, Lin Li, Ya-Li Wu, Hua-Ying Fu, Honglin Feng, Wei Yao, San-Ji Gao, Jin-da Wang","doi":"10.1111/pce.70789","DOIUrl":"10.1111/pce.70789","url":null,"abstract":"<p><p>Terpenoids represent one of the largest and most structurally diverse classes of plant secondary metabolites, playing essential roles in defense against herbivorous insects. Despite their importance, the mechanisms regulating terpenoid biosynthesis remain largely unexplored. Here, in sugarcane, we identified and characterized a terpene synthase gene from Saccharum spp. Hybrids, ShTPS1, which is strongly induced by feeding from fall armyworm Spodoptera frugiperda and sugarcane stem borer Chilo infuscatellus. Enzymatic assays in vitro revealed that ShTPS1 catalyzes the biosynthesis of volatile terpenoid β-caryophyllene using substrate farnesyl diphosphate (FPP) and β-caryophyllene showed a strong repellent effect on S. frugiperda, Chilo infuscatellus larvae and Ceratovacuna lanigera. ShTPS1 overexpression in vivo in tobacco and sugarcane both significantly enhanced β-caryophyllene emission and dramatically reduced larval feeding preference. We further revealed that the basic helix-loop-helix transcription factor ShbHLH34 activates ShTPS1 transcription by binding to a G-box motif in its promoter. Notably, this ShbHLH34-mediated ShTPS1 transcription was significantly enhanced by a transcriptional cofactor purine-rich alpha ShPUR. Collectively, our findings establish the ShbHLH34/ShPUR-ShTPS1 regulatory module as a key mechanism underlying herbivore-induced terpenoid biosynthesis in sugarcane and provide promising molecular targets for breeding insect-resistant varieties through genetic improvement.</p>","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":"9011-9028"},"PeriodicalIF":6.9,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148682815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Rhizobium Inoculation Enhances Drought Tolerance of Legume Species by Increasing Leaf Hydraulic Efficiency and Safety and Speeding Up Post-Drought Recovery. 根瘤菌接种提高豆科植物抗旱性,提高叶片水力效率和安全性,加速干旱后恢复。
IF 6.9 1区 生物学
Plant, Cell & Environment Pub Date : 2026-11-01 Epub Date: 2026-07-28 DOI: 10.1111/pce.70769
Lin Cai, Yu-Hang Zhang, Feng-Ping Li, Yan-Ru Li, Ya-Xian Du, Yan-Ling Nong, Min-Hui Bi, Zhuang Zhang, Tuo Chen, Christine Scoffoni, Xiang-Wen Fang
{"title":"Rhizobium Inoculation Enhances Drought Tolerance of Legume Species by Increasing Leaf Hydraulic Efficiency and Safety and Speeding Up Post-Drought Recovery.","authors":"Lin Cai, Yu-Hang Zhang, Feng-Ping Li, Yan-Ru Li, Ya-Xian Du, Yan-Ling Nong, Min-Hui Bi, Zhuang Zhang, Tuo Chen, Christine Scoffoni, Xiang-Wen Fang","doi":"10.1111/pce.70769","DOIUrl":"10.1111/pce.70769","url":null,"abstract":"<p><p>The trade-off between leaf hydraulic efficiency and safety is among the principal theories explaining plant drought adaptation, but whether rhizobium inoculation modulates this trade-off to enhance plant drought adaptation remains unclear. Here, leaf water potential (Ψ<sub>leaf</sub>), stomatal conductance (g<sub>s</sub>), photosynthesis (An) and leaf hydraulic conductance (K<sub>leaf</sub>) during and after drought were measured in rhizobium-inoculated and non-inoculated Glycine max and Caragana korshinskii grown under well-watered (WW), moderate drought stress (MS) and severe drought stress (SS) conditions. Non-inoculated plants of each species exhibited a more negative Ψ<sub>leaf</sub>, decreasing the maximum K<sub>leaf</sub> (K<sub>leaf-max</sub>), a more negative Ψ<sub>leaf</sub> at 50% loss of K<sub>leaf-max</sub> (K<sub>leaf</sub> P<sub>50</sub>), lowering the g<sub>s</sub> and A<sub>n</sub>, and delayed recovery from drought when grown under increasing drought severity, displaying a significant trade-off between K<sub>leaf-max</sub> and K<sub>leaf</sub> P<sub>50</sub>. However, compared with non-inoculated plants, inoculated plants exhibited greater drought tolerance because of the improved Ψ<sub>leaf</sub>, revealing a new trade-off relationship characterised by a greater K<sub>leaf-max</sub> and a more negative K<sub>leaf</sub> P<sub>50</sub>, increased g<sub>s</sub> and A<sub>n</sub>, a more rapid recovery from drought, greater biomass accumulation and increased nitrogen and phosphorus contents. Our results suggest that rhizobium inoculation improves hydraulic safety and efficiency and recovery from drought, thus provides drought tolerance in legume species.</p>","PeriodicalId":222,"journal":{"name":"Plant, Cell & Environment","volume":" ","pages":"8751-8762"},"PeriodicalIF":6.9,"publicationDate":"2026-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148597020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Odorant-Binding Protein Can Mediate Flavones Perception in Rice Planthopper to Exacerbate the Damage Under Elevated CO2. 气味结合蛋白可介导水稻飞虱对黄酮类化合物的感知,从而加剧CO2升高对飞虱的伤害。
IF 6.9 1区 生物学
Plant, Cell & Environment Pub Date : 2026-11-01 Epub Date: 2026-07-28 DOI: 10.1111/pce.70783
Ruichuan Duan, Xinru Xiao, Shuqi Ren, Yewei Jia, Guijun Wan, Fajun Chen
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