Journal of Experimental Botany最新文献_第3页

Beyond bitter: plant triterpenoids in the battle against herbivorous insects. 超越痛苦：植物三萜在对抗食草昆虫的战斗中。

IF 5.7 2区生物学

Journal of Experimental Botany Pub Date : 2025-10-09 DOI: 10.1093/jxb/eraf238

Vandana Mathur, Narasimham Dokka, Gajalakshmi Raghunathan, Maniraj Rathinam, Manisha Parashar, Shraddha Srivastava, Rohini Sreevathsa

{"title":"Beyond bitter: plant triterpenoids in the battle against herbivorous insects.","authors":"Vandana Mathur, Narasimham Dokka, Gajalakshmi Raghunathan, Maniraj Rathinam, Manisha Parashar, Shraddha Srivastava, Rohini Sreevathsa","doi":"10.1093/jxb/eraf238","DOIUrl":"10.1093/jxb/eraf238","url":null,"abstract":"Triterpenes are pivotal components of plant defence, offering a sustainable alternative to synthetic pesticides in insect pest management. They serve as critical components of both direct and indirect defence strategies, impacting various facets of herbivore behaviour and development. These structurally diverse metabolites not only deter herbivores directly but also modulate ecological interactions, potentially contributing to plant immunity. Despite their ecological and evolutionary significance, a comprehensive understanding of triterpene utility in plant defence, specifically towards herbivorous insects remains patchy. This review explores the evolutionary arms race between plants and insect herbivores, focusing on how pests evolved counter strategies against triterpene-based defences and the implications for long-term resistance management. However, their effective deployment requires a comprehensive framework that integrates evolutionary biology, ecological dynamics, and biotechnological interventions. Advancements in genome editing, metabolic engineering, and RNA interference (RNAi) provide promising avenues to optimize triterpene production in crops while targeting insect defence pathways. By integrating molecular, ecological, and biotechnological insights, this review proposes a conceptual framework to harness triterpenes for sustainable agriculture, reducing pesticide dependency while maintaining ecological balance. Addressing key knowledge gaps through interdisciplinary research will be critical for translating these discoveries into scalable agricultural solutions, ensuring crop resilience and long-term food security.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":"4441-4457"},"PeriodicalIF":5.7,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144174135","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Mitogen-activated protein kinase 7 phosphorylates transcription factor ZmWRKY104 to enhance salt tolerance in maize. 丝裂原活化蛋白激酶7磷酸化转录因子ZmWRKY104，增强玉米耐盐性。

IF 5.7 2区生物学

Journal of Experimental Botany Pub Date : 2025-10-09 DOI: 10.1093/jxb/eraf253

Jing Li, Chen Zhang, Yadan Miao, Yang Xiang, Aying Zhang

{"title":"Mitogen-activated protein kinase 7 phosphorylates transcription factor ZmWRKY104 to enhance salt tolerance in maize.","authors":"Jing Li, Chen Zhang, Yadan Miao, Yang Xiang, Aying Zhang","doi":"10.1093/jxb/eraf253","DOIUrl":"10.1093/jxb/eraf253","url":null,"abstract":"Salt stress is one of the main environmental factors that severely constrain plant growth, development, and productivity. Our recent study showed that the WRKY transcription factor ZmWRKY104 activated ZmSOD4 expression and improved maize salt tolerance. However, the upstream regulator of the ZmWRKY104-ZmSOD4 module in salt response is unknown. Here, we identified a mitogen-activated protein kinase ZmMAPK7, as an upstream regulator of ZmWRKY104 in salt stress response, which physically interacts with ZmWRKY104 in vitro and in vivo. ZmMAPK7 enhances the salt tolerance of maize by increasing superoxide dismutase (SOD) activity to reduce the accumulation of superoxide anion (O2-) generation. Genetic analysis showed that ZmMAPK7 is dependent on ZmWRKY104 in regulating maize salt tolerance. Furthermore, ZmMAPK7 phosphorylates ZmWRKY104 at Ser142, and ZmMAPK7-mediated phosphorylation of ZmWRKY104 enhances its ability to bind to the ZmSOD4 promoter, thereby improving salt tolerance in maize. This study elucidates a novel mechanism by which ZmMAPK7 functions upstream of ZmWRKY104 to positively regulate salt tolerance in maize.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":"4709-4725"},"PeriodicalIF":5.7,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144258144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 nonsense mutation in the Brown Spotted Leaf 2 gene encoding a receptor-like cytoplasmic kinase confers enhanced disease resistance in rice. 编码受体样细胞质激酶的褐斑叶2 （BSL2）基因的无义突变增强了水稻的抗病能力。

IF 5.7 2区生物学

Journal of Experimental Botany Pub Date : 2025-10-09 DOI: 10.1093/jxb/eraf214

Shiyu Wang, Xinfeng Zhang, Shuang Liu, Yu Song, Haoyu Zheng, Yanjuan Hu, Tong Li, Songhong Wei, Xiaoxue Wang

{"title":"A nonsense mutation in the Brown Spotted Leaf 2 gene encoding a receptor-like cytoplasmic kinase confers enhanced disease resistance in rice.","authors":"Shiyu Wang, Xinfeng Zhang, Shuang Liu, Yu Song, Haoyu Zheng, Yanjuan Hu, Tong Li, Songhong Wei, Xiaoxue Wang","doi":"10.1093/jxb/eraf214","DOIUrl":"10.1093/jxb/eraf214","url":null,"abstract":"Receptor-like cytoplasmic kinases (RLCKs) are critical components that facilitate the connection between transmembrane-localized pattern recognition receptors (PRRs) and downstream signaling pathways involved in defense responses in plants. In this study, we present findings regarding the Brown Spotted Leaf 2 (BSL2) gene, which encodes a protein kinase in the RLCK superfamily, and its role in cell death-mediated defense responses in rice. We obtained a mutant exhibiting a lesion leaf phenotype, designated as brown spotted leaf 2-1 (bsl2-1), through ethylmethane sulfonate (EMS) mutagenesis. The bsl2-1 mutant is characterized as a single recessive mutation, resulting from a G-to-A single base pair alteration that converts tryptophan to a premature stop codon. BSL2 encodes a protein kinase containing a protein kinase catalytic (PKc) domain and a tight adherence D (TadD) domain. The bsl2-1 mutation disrupts the TadD domain, leading to the manifestation of a spontaneous lesion leaf phenotype. BSL2, which is expressed globally and is induced by phytohormones and pathogens in rice, encodes a protein localized in the cytoplasm. Histochemical analysis indicated a significant accumulation of reactive oxygen species, increased DNA fragmentation, and the occurrence of programmed cell death, generating a phenotype resembling a hypersensitive response in the bsl2-1 mutant. Furthermore, the bsl2-1 mutation conferred enhanced resistance to sheath blight and bacterial blight diseases. These findings suggest that BSL2 is involved in regulating innate immune responses and disease resistance in rice.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":"4458-4471"},"PeriodicalIF":5.7,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144101941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Linking pod-set and seed yield of faba bean across organ, phytomer, plant, and population scales. 蚕豆在器官、植物体、植株和群体尺度上的结荚和产量联系。

IF 5.7 2区生物学

Journal of Experimental Botany Pub Date : 2025-10-09 DOI: 10.1093/jxb/eraf176

James B Manson, Matthew D Denton, Lachlan Lake, Jason Brand, Victor O Sadras

{"title":"Linking pod-set and seed yield of faba bean across organ, phytomer, plant, and population scales.","authors":"James B Manson, Matthew D Denton, Lachlan Lake, Jason Brand, Victor O Sadras","doi":"10.1093/jxb/eraf176","DOIUrl":"10.1093/jxb/eraf176","url":null,"abstract":"Pod-set is the conversion of flowers to pods, but its connection to crop yield of pulses must traverse scales of biological organization; here we address scaling from organ to crop in faba bean. We hypothesized that crop-level resource capture drives pod-set and yield of faba bean, whereas allocation to pods or between pods plays a minor role. We combined new field experiments and published data to test supporting hypotheses in four studies. We showed that node-level pod-set is not modular but is coordinated across the whole plant. Crop yield and pods per m2 were associated with crop growth in our data, not with plant growth or supposed competition between plants or pods. Seed number, seed size, and pod wall mass had yield-neutral trade-offs. Indeterminate shoots facilitate resource capture, and, surprisingly, fruit removal could increase yield by up to 49% when it allows continued growth and resource capture. We concluded that pod-set is mainly dependent on crop growth but could be targeted for its feedback to post-flowering phase duration. Our work provides conceptual links between plant reproductive biology and crop yield that could be relevant to other indeterminate crop species.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":"4472-4489"},"PeriodicalIF":5.7,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143995818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Age-dependent differential iron deficiency responses of rosette leaves during reproductive stages in Arabidopsis thaliana. 拟南芥莲座叶片在繁殖阶段的年龄依赖性差异缺铁反应。

IF 5.7 2区生物学

Journal of Experimental Botany Pub Date : 2025-10-09 DOI: 10.1093/jxb/eraf207

Mary Ngigi, Mather Khan, Ricarda Remus, Shishir K Gupta, Petra Bauer

{"title":"Age-dependent differential iron deficiency responses of rosette leaves during reproductive stages in Arabidopsis thaliana.","authors":"Mary Ngigi, Mather Khan, Ricarda Remus, Shishir K Gupta, Petra Bauer","doi":"10.1093/jxb/eraf207","DOIUrl":"10.1093/jxb/eraf207","url":null,"abstract":"Iron (Fe) is essential for plant development throughout the life cycle. Rosette leaves are responsive to Fe supply in Arabidopsis thaliana. Little is known about the dynamics of Fe deficiency (-Fe) responses of rosette leaves during the reproductive stages. We studied the dynamics of Fe-dependent responses at four consecutive reproductive stages (rosette, bolting, flowering, and mature silique stages, herein named RS, BS, FS, and MS). We examined the growth of rosette leaves, elemental contents, and gene expression patterns of Fe homeostasis genes belonging to differently regulated groups. We determined individual leaf sizes during 7 d of +Fe and -Fe treatment at the RS. Young leaves responded to -Fe with growth inhibition and yellowing. Old and young leaves differed in gene expression patterns and elemental contents. Differences were noted between the early and late reproductive stages (primarily RS and BS versus MS), and correlations between ionomic contents and gene expression were detected. All leaves had induced Fe recycling genes under -Fe. Our findings highlight a developmental stage-dependent modulation of +Fe and -Fe responses in leaves. We discuss possible leaf signaling mechanisms accounting for the distinct responses between old and young leaves. This insight is informative to strengthen our understanding of plant Fe management.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":"4598-4614"},"PeriodicalIF":5.7,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144119830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

The Chloroplast-Localized ABC Transporter OsABCB24 Regulates Aleurone Cell Size and Grain Nutritional Quality in Rice by Modulating Auxin Homeostasis. 叶绿体定位ABC转运蛋白OsABCB24通过调节生长素稳态调节水稻糊粉细胞大小和籽粒营养品质。

IF 5.7 2区生物学

Journal of Experimental Botany Pub Date : 2025-10-08 DOI: 10.1093/jxb/eraf445

Yang Yang, Zhong Tang, Wen-Wen Zhang, Xin-Yuan Huang, Fang-Jie Zhao

{"title":"The Chloroplast-Localized ABC Transporter OsABCB24 Regulates Aleurone Cell Size and Grain Nutritional Quality in Rice by Modulating Auxin Homeostasis.","authors":"Yang Yang, Zhong Tang, Wen-Wen Zhang, Xin-Yuan Huang, Fang-Jie Zhao","doi":"10.1093/jxb/eraf445","DOIUrl":"https://doi.org/10.1093/jxb/eraf445","url":null,"abstract":"The aleurone in cereal grains is an outer cell layer enriched with multiple nutrients important for human health. Enhancing the thickness of the aleurone layer through breeding could improve the nutritional value of rice. In this study, we characterized OsABCB24, a member of the ABCB transporter subfamily gene in rice, and its role in regulating aleurone development. Expression profiling revealed that OsABCB24 is predominantly expressed in seedling leaves and developing caryopsis, particularly in aleurone layer cells during grain filling. Subcellular localization analyses via protoplast transfection and immunogold labeling demonstrated that OsABCB24 is localized to the chloroplast. Knockout of OsABCB24 significantly increased thickness of the aleurone cells and elevated the concentrations of minerals such as phosphorus, potassium, zinc, magnesium, and copper in brown rice. Knockout of OsABCB24 also decreased the concentrations of free and conjugated indole-3-acetic acid (IAA) in developing caryopsis and increased the leaf angle by influencing cell proliferation and elongation on the adaxial side of the lamina joint at seedling stage. Leaf angle was less sensitive to exogenous IAA in osabcb24 mutants than in wild type. Taken together, these findings suggest that OsABCB24 is a negative regulator of aleurone cell expansion possibly by modulating auxin homeostasis. OsABCB24 is a promising genetic target for breeding rice with increased aleurone thickness and nutrient concentrations without yield penalty.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":""},"PeriodicalIF":5.7,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145244512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Altered cell wall properties in domesticated cotton enhance CO2 diffusion conductance. 驯化棉花细胞壁特性的改变提高了CO2的扩散导度。

IF 5.7 2区生物学

Journal of Experimental Botany Pub Date : 2025-10-08 DOI: 10.1093/jxb/eraf441

Dongsheng Sun, Zhangying Lei, Jaume Flexas, Cuncang Jiang, Ziliang Li, Hao Ding, Fang Liu, Yinglang Wan, Wangfeng Zhang, Marc Carriquí, Yali Zhang

{"title":"Altered cell wall properties in domesticated cotton enhance CO2 diffusion conductance.","authors":"Dongsheng Sun, Zhangying Lei, Jaume Flexas, Cuncang Jiang, Ziliang Li, Hao Ding, Fang Liu, Yinglang Wan, Wangfeng Zhang, Marc Carriquí, Yali Zhang","doi":"10.1093/jxb/eraf441","DOIUrl":"https://doi.org/10.1093/jxb/eraf441","url":null,"abstract":"The cell wall plays a key role in determining mesophyll conductance (gm) and photosynthetic capacity. While the impact of wall thickness (Tcw) on gm is well understood, the influence of wall composition and structural interactions on Tcw and gm remains unclear, and it is unknown whether these factors have been affected during crop domestication. In this study, we examined 25 wild and 13 domesticated Gossypium genotypes to investigate whether variations in Tcw, composition and structure affected gm and photosynthesis. X-ray diffraction was used to analyze internal cell wall structure. Cotton domestication reduced Tcw by modifying pectin-to-(cellulose+hemicellulose) ratio and increasing cellulose crystallinity. However, cell wall composition and structure regulate gm differently in wild and domesticated genotypes. In wild genotypes, pectin-to-(cellulose+hemicellulose) ratio influences CO2 diffusion, while in domesticated ones, the pectin matrix may be more compact, making 1/(pectin+cellulose+hemicellulose) a better predictor, reflecting the internal property differences of cell wall. We suggest that the exceptionally low Tcw values reported in cotton domesticated genotypes indicate that they have reached the lower limit, which may impose physical constraints on component proportions and conformation.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":""},"PeriodicalIF":5.7,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145251528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Defects in ethanol fermentation catalysed by pyruvate decarboxylases reduce arsenic levels in rice. 丙酮酸脱羧酶催化的乙醇发酵缺陷降低了大米中的砷含量。

IF 5.7 2区生物学

Journal of Experimental Botany Pub Date : 2025-10-08 DOI: 10.1093/jxb/eraf442

Shimpei Hayashi, Hachidai Tanikawa, Masato Kuramata, Tadashi Abe, Satoru Ishikawa

{"title":"Defects in ethanol fermentation catalysed by pyruvate decarboxylases reduce arsenic levels in rice.","authors":"Shimpei Hayashi, Hachidai Tanikawa, Masato Kuramata, Tadashi Abe, Satoru Ishikawa","doi":"10.1093/jxb/eraf442","DOIUrl":"https://doi.org/10.1093/jxb/eraf442","url":null,"abstract":"Reducing arsenic levels in paddy rice is an important agricultural issue. Rice alcohol dehydrogenase 2 (ADH2) deficiency results in reduced arsenic uptake from the soil. ADHs are presumed to be anaerobic metabolism enzymes. However, whether the reduced arsenic uptake is due to changes in anaerobic metabolism remains unclear. Here, we demonstrate the causal relationships between them through analyses of anaerobic metabolism-related mutants. As representative anaerobic metabolism enzymes, two lactate dehydrogenases (LDHs), five pyruvate decarboxylases (PDCs) and three ADHs are found in rice. To eliminate functional redundancy, double LDH mutants, quintuple PDC mutants and triple ADH mutants were generated via genome editing. Arsenic levels in grains were not reduced in the double LDH mutants, suggesting that defects in the lactate fermentation pathway are not responsible for the reduced arsenic uptake. On the other hand, in the quintuple PDC mutant, the arsenic levels in the grains were reduced to the same degree as those in the triple ADH mutant. The PDC and ADH mutants presented reduced silica contents, suggesting reduced uptake of arsenic via silicate transporters. These results indicate that a defect in the ethanol fermentation pathway of anaerobic metabolism triggers reduced arsenic uptake.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":""},"PeriodicalIF":5.7,"publicationDate":"2025-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145251182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Overexpression of the maize 9-lipoxygenase gene ZmLOX4 confers resistance to Fusarium verticillioides via the oxylipin and jasmonic acid-mediated pathways. 玉米9-脂氧合酶基因ZmLOX4的过表达通过氧脂素和茉莉酸介导的途径赋予对黄萎病的抗性。

IF 5.7 2区生物学

Journal of Experimental Botany Pub Date : 2025-10-03 DOI: 10.1093/jxb/eraf437

Letizia Ottaviani, Emilie Montes, Thomas Widiez, Chiara Dall'Asta, Paola Giorni, Axel Mithöfer, Adriano Marocco, Alessandra Lanubile

{"title":"Overexpression of the maize 9-lipoxygenase gene ZmLOX4 confers resistance to Fusarium verticillioides via the oxylipin and jasmonic acid-mediated pathways.","authors":"Letizia Ottaviani, Emilie Montes, Thomas Widiez, Chiara Dall'Asta, Paola Giorni, Axel Mithöfer, Adriano Marocco, Alessandra Lanubile","doi":"10.1093/jxb/eraf437","DOIUrl":"https://doi.org/10.1093/jxb/eraf437","url":null,"abstract":"Fusarium verticillioides is a prominent pathogen in cereals that reduces crop yields and poses a threat to food safety by producing the secondary metabolites fumonisins. Maize lipoxygenases (ZmLOXs) genes are involved in the biosynthesis of oxylipins that function as signals in regulating defense. Previously, we showed that ZmLOX4 gene mutagenesis was associated with susceptibility to F. verticillioides in kernels, seedlings and ears altering ZmLOX transcript profiles as well as LOX enzymatic activity. In the current study, we show that ZmLOX4 overexpression results in enhanced pathogen and fumonisin contamination resistance, substantiating its role in defense and making ZmLOX4 a good target to confer disease resistance. Transcriptomic and lipidomic analyses reveal that ZmLOX4 overexpression up-regulates 9-LOX gene expression and boosts the 9-oxylipin production under fungal infection. The increased expression of jasmonic acid-related genes is also observed, but is reinforced when ZmLOX4 is overexpressed, correlating with wider accumulation of jasmonic acid-related metabolites. The ZmLOX4 gene has potential applications in engineering cropping plants to increase immunity to F. verticillioides.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":""},"PeriodicalIF":5.7,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145212893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Light-mediated balances and trade-offs in plant energy and resource management. 植物能量和资源管理中光介导的平衡和权衡。

IF 5.7 2区生物学

Journal of Experimental Botany Pub Date : 2025-10-03 DOI: 10.1093/jxb/eraf439

Malleshaiah SharathKumar, Sarah Courbier, Mikhail Schepetilnikov, Prakhar Awasthi, Johanna Krahmer, Gabriela Toledo-Ortiz

{"title":"Light-mediated balances and trade-offs in plant energy and resource management.","authors":"Malleshaiah SharathKumar, Sarah Courbier, Mikhail Schepetilnikov, Prakhar Awasthi, Johanna Krahmer, Gabriela Toledo-Ortiz","doi":"10.1093/jxb/eraf439","DOIUrl":"https://doi.org/10.1093/jxb/eraf439","url":null,"abstract":"Light is a central environmental signal that coordinates plant development, metabolism, and stress responses. By integrating external cues with internal programs, plants balance growth and resource allocation to adapt to fluctuating environments. Light-regulated signalling cascades drive morpho-physiological adaptations for optimized light capture, tuning photosynthetic efficiency, and source-sink dynamics. Key transcriptional hubs, regulated by master transcription factors such as HY5, PIFs, and GLKs coordinate photosynthesis, growth, and defence responses, driving adjustments and imposing balances for adaptation to shade, variable light, and stress. In addition to photosynthetic energy production, light signalling pathways influence carbon and nitrogen metabolism, leading to sugar allocation, starch turnover, and nutrient utilization-balancing trade-offs and balances between growth, energy storage, and stress responses. Emerging evidence shows that light signalling pathways intersect with energy-monitoring cascades regulated by TOR, T6P and SnRK1, linking the plant's energy status to growth, immunity, and stress resilience. Sugar levels and light signals can also jointly regulate responses to both biotic and abiotic stress, with TOR acting as a central integration hub for environmental and metabolic signals, including transcriptional and translational mechanisms. This review synthesises current understanding on the interplay between light and TOR-mediated networks in energy production and allocation, while highlighting knowledge gaps that limit translational potential for improving plant productivity and resilience.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":""},"PeriodicalIF":5.7,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145212965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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