Journal of Experimental Botany最新文献_第3页

The heat shock response in plants: new insights into modes of perception, signaling, and the contribution of hormones. 植物的热休克反应：对感知和信号传递模式以及激素如何发挥作用的新认识。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2025-05-10 DOI: 10.1093/jxb/erae419

Gönül Dündar, Veronica E Ramirez, Brigitte Poppenberger

{"title":"The heat shock response in plants: new insights into modes of perception, signaling, and the contribution of hormones.","authors":"Gönül Dündar, Veronica E Ramirez, Brigitte Poppenberger","doi":"10.1093/jxb/erae419","DOIUrl":"10.1093/jxb/erae419","url":null,"abstract":"Plants have evolved specific temperature preferences, and shifts above this range cause heat stress with detrimental effects such as physiological disruptions, metabolic imbalances, and growth arrest. To reduce damage, plants utilize the heat shock response (HSR), signaling cascades that activate heat shock factors (HSFs), transcription factors that control the heat stress-responsive transcriptome for activation of protective measures. While the core HSR is well studied, we still know relatively little about heat stress perception and signal integration or crosstalk with other pathways. In the last few years, however, significant progress has been made in this area, which is summarized here. It has emerged that the plant hormones brassinosteroids (BRs) and abscisic acid (ABA) contribute to heat stress tolerance by impacting the modes of activity of HSFs. Also, we began to understand that heat stress is sensed in different cellular compartments and that events in the nucleus, such as nuclear condensate formation via liquid-liquid phase separation, play a key role. In the future, it will be important to explore how these multilayered perception and signaling modes are utilized to understand how environmental context and developmental stage determine the outcome of heat stress effects on plant growth and development.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":"1970-1977"},"PeriodicalIF":5.6,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12066118/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142467319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Diverse roles of phytohormonal signaling in modulating plant-virus interactions. 植物激素信号在调节植物与病毒相互作用中的不同作用

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2025-05-10 DOI: 10.1093/jxb/erae468

Shambhavi Sharma, Manoj Prasad

{"title":"Diverse roles of phytohormonal signaling in modulating plant-virus interactions.","authors":"Shambhavi Sharma, Manoj Prasad","doi":"10.1093/jxb/erae468","DOIUrl":"10.1093/jxb/erae468","url":null,"abstract":"Virus infection brings about changes in the transcriptome, proteome, and metabolome status of the infected plant, wherein substantial alterations in the abundance of phytohormones and associated components involved in their signaling pathways have been observed. In recent years, extensive research in the field of plant virology has showcased the indisputable significance of phytohormone signaling during plant-virus interactions. Apart from acting as growth regulators, phytohormones elicit a robust immune response, which restricts viral multiplication within the plant and propagation by vectors. Interestingly, these pathways have been shown to act not only as isolated mechanisms but also as complex intertwined regulatory cascades where the crosstalk among different phytohormones and with other antiviral pathways takes place during plant-virus interaction. Viruses disrupt phytohormone homeostasis via their multifunctional effectors, which seems to be a 'smart' approach adopted by viruses to circumvent phytohormone-mediated plant immune responses. In this review, we summarize current understanding of role of phytohormone signaling pathways during plant-virus interactions in activating plant antiviral immune responses and how viruses exploit these signaling pathways to favor their pathogenesis.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":"1921-1940"},"PeriodicalIF":5.6,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142644057","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

Molecular mechanisms affected by boron deficiency in root and shoot meristems of plants. 植物根部和芽分生组织受缺硼影响的分子机制

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2025-05-10 DOI: 10.1093/jxb/eraf036

Liuyang Chu, Cay Christin Schäfer, Michaela S Matthes

{"title":"Molecular mechanisms affected by boron deficiency in root and shoot meristems of plants.","authors":"Liuyang Chu, Cay Christin Schäfer, Michaela S Matthes","doi":"10.1093/jxb/eraf036","DOIUrl":"10.1093/jxb/eraf036","url":null,"abstract":"Boron deficiency is an abiotic stress that negatively impacts plant growth and yield worldwide. Boron deficiency primarily affects the development of plant meristems- stem cells critical for all post-embryonic tissue growth. The essential role of boron in meristem development was first established in 1923. It remains unclear whether boron directly integrates into meristem molecular signalling pathways. In addition to its stabilizing function in the primary cell wall, growing evidence suggests roles for boron in various molecular processes including phytohormone cascades. These indications enhance a mechanistic understanding of why boron is crucial for proper meristem development. In this review we compile and discuss molecular pathways influenced by boron availability in Arabidopsis (Arabidopsis thaliana), maize (Zea mays), rice (Oryza sativa), and oilseed rape (Brassica napus) with a focus on the auxin-, ethylene-, and cytokinin-mediated hormone cascades. We particularly compare and contrast phenotypic and molecular adaptations of shoot and root meristems to boron deficiency and pinpoint tissue-specific differences.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":"1866-1878"},"PeriodicalIF":5.6,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12066120/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143052803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Roles of hormones in regulating root growth-water interactions. 激素在调节根系生长与水分相互作用中的作用。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2025-05-10 DOI: 10.1093/jxb/eraf063

Shivam Sharma, Malcolm J Bennett, Poonam Mehra

{"title":"Roles of hormones in regulating root growth-water interactions.","authors":"Shivam Sharma, Malcolm J Bennett, Poonam Mehra","doi":"10.1093/jxb/eraf063","DOIUrl":"10.1093/jxb/eraf063","url":null,"abstract":"Water stress presents a critical challenge affecting plant growth and agricultural productivity, with drought alone causing substantial yield losses. Roots serve as the primary site for water uptake, enabling plants to detect water stress by sensing changes in soil moisture levels. This initial perception prompts roots to initiate a spectrum of adaptive responses at morphological, anatomical, and biochemical levels. In addition to coping with severe water stress conditions such as drought, roots also respond to microscale variations in water availability within the rhizosphere as they navigate through soil, exhibiting responses such as hydrotropism, xerobranching, and hydropatterning. These adaptive responses are orchestrated by dynamic and sophisticated sensing and signalling mechanisms mediated by plant hormones at the cellular level. This review explores recent advances in our understanding of root responses to water stress, emphasizing the hormonal mechanisms underpinning these adaptations. Furthermore, it outlines future perspectives aimed at enhancing crop resilience to water stress through improved understanding and manipulation of root-water interactions.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":"1987-1995"},"PeriodicalIF":5.6,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12066116/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143414442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Ethylene signaling is essential for mycorrhiza-induced resistance against chewing herbivores in tomato. 乙烯信号在菌根诱导的番茄对咀嚼食草动物的抗性中是必不可少的。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2025-05-10 DOI: 10.1093/jxb/eraf053

Javier Lidoy, Javier Rivero, Živa Ramšak, Marko Petek, Maja Križnik, Victor Flors, Juan A Lopez-Raez, Ainhoa Martinez-Medina, Kristina Gruden, Maria J Pozo

{"title":"Ethylene signaling is essential for mycorrhiza-induced resistance against chewing herbivores in tomato.","authors":"Javier Lidoy, Javier Rivero, Živa Ramšak, Marko Petek, Maja Križnik, Victor Flors, Juan A Lopez-Raez, Ainhoa Martinez-Medina, Kristina Gruden, Maria J Pozo","doi":"10.1093/jxb/eraf053","DOIUrl":"10.1093/jxb/eraf053","url":null,"abstract":"Arbuscular mycorrhizal (AM) symbiosis can prime plant defenses, leading to mycorrhiza-induced resistance (MIR) against different attackers, including insect herbivores. Still, our knowledge of the complex molecular regulation leading to MIR is very limited. Here, we showed that the AM fungus Funneliformis mosseae protects tomato plants against two different chewing herbivores, Spodoptera exigua and Manduca sexta. We explored the underlying molecular mechanism through genome-wide transcriptional profiling, bioinformatics network analyses, and functional bioassays. Herbivore-triggered jasmonate (JA)-regulated defenses were primed in leaves of mycorrhizal plants. Likewise, ethylene (ET) biosynthesis and signaling were also higher in leaves of mycorrhizal plants both before and after herbivory. We hypothesized that fine-tuned ET signaling is required for the primed defense response leading to MIR. ET is a complex regulator of plant responses to stress and is generally considered a negative regulator of plant defenses against herbivory. However, ET-deficient or insensitive lines did not show AM-primed JA biosynthesis or defense response, and were unable to develop MIR against any of the herbivores. Thus, we demonstrate that hormone crosstalk is central to the priming of plant immunity by beneficial microbes, with ET fine-tuning being essential for the primed JA biosynthesis and boosted defenses leading to MIR in tomato.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":"2005-2021"},"PeriodicalIF":5.6,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12066123/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143374266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Five unaddressed questions about cytokinin biosynthesis. 关于细胞分裂素生物合成的五个未解决的问题。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2025-05-10 DOI: 10.1093/jxb/erae348

Hitoshi Sakakibara

引用次数: 0

Diverse roles of ethylene in maize growth and development, and its importance in shaping plant architecture. 乙烯在玉米生长发育中的多种作用及其在植物结构塑造中的重要性。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2025-05-10 DOI: 10.1093/jxb/eraf062

Alejandro Aragón-Raygoza, Josh Strable

{"title":"Diverse roles of ethylene in maize growth and development, and its importance in shaping plant architecture.","authors":"Alejandro Aragón-Raygoza, Josh Strable","doi":"10.1093/jxb/eraf062","DOIUrl":"10.1093/jxb/eraf062","url":null,"abstract":"The gaseous plant hormone ethylene is a key developmental and growth regulator, and a pivotal endogenous response signal to abiotic and biotic interactions, including stress. Much of what is known about ethylene biosynthesis, perception, and signaling comes from decades of research primarily in Arabidopsis thaliana and other eudicot model systems. In contrast, detailed knowledge on the ethylene pathway and response to the hormone is markedly limited in maize (Zea mays L.), a global cereal crop that is a major source of calories for humans and livestock, as well as a key industrial biofeedstock. Recent reports of forward screens and targeted reverse genetics have provided important insight into conserved and unique differences of the ethylene pathway and downstream responses. Natural and edited allelic variation in the promoter regions and coding sequences of ethylene biosynthesis and signaling genes alters maize shoot and root architectures, and plays a crucial role in biomass and grain yields. This review discusses recent advances in ethylene research in maize, with an emphasis on the role of ethylene in regulating growth and development of the shoot and root systems, and ultimately how this crucial hormone impacts plant architecture and grain yield.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":"1854-1865"},"PeriodicalIF":5.6,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12066121/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143458235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 early hormone signaling network underlying wound-induced de novo root regeneration. 伤口诱导新生根再生的早期激素信号网络。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2025-05-10 DOI: 10.1093/jxb/erae422

Ji Woo Kim, Pil Joon Seo

引用次数: 0

Jack of all trades: crosstalk between FERONIA signaling and hormone pathways. 万事通：FERONIA信号和激素通路之间的串扰。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2025-05-10 DOI: 10.1093/jxb/eraf071

Jie Tang, Hongqing Guo

{"title":"Jack of all trades: crosstalk between FERONIA signaling and hormone pathways.","authors":"Jie Tang, Hongqing Guo","doi":"10.1093/jxb/eraf071","DOIUrl":"10.1093/jxb/eraf071","url":null,"abstract":"The receptor kinase FERONIA (FER) is a multifaceted regulator of plant growth, development, reproduction, and stress responses. FER is functionally connected to many plant hormones in diverse biological processes. This review summarizes the current understanding of the interplay between FER and phytohormones, with a focus on abscisic acid, ethylene, jasmonic acid, auxin, and brassinosteroid. The mutual regulation between FER and plant hormones happens at multiple levels including ligands, receptors, and downstream signaling components. Plant hormones can regulate the expression of genes encoding FER and its ligands RAPID ALKALINIZATION FACTORs (RALFs) as well as the abundance and kinase activity of FER proteins. On the other hand, FER can regulate hormone biosynthesis, transport, perception, and downstream signaling components such as transcription factors. Evidence of the crosstalk between FER and phytohormones is also emerging in crop species. Despite the rapid progress made in this field, more mechanistic studies are still needed to gain a comprehensive understanding of the FER-phytohormone crosstalk. Future research prospects and potential approaches are also discussed in this review.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":"1907-1920"},"PeriodicalIF":5.6,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12066122/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143458237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Transcriptional regulation of development by SMAX1-LIKE proteins - targets of strigolactone and karrikin/KAI2 ligand signaling. SMAX1-LIKE蛋白、独角麦内酯和karrikin/KAI2配体信号转导的转录调控

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2025-05-10 DOI: 10.1093/jxb/eraf027

Sun Hyun Chang, Wesley George, David C Nelson

{"title":"Transcriptional regulation of development by SMAX1-LIKE proteins - targets of strigolactone and karrikin/KAI2 ligand signaling.","authors":"Sun Hyun Chang, Wesley George, David C Nelson","doi":"10.1093/jxb/eraf027","DOIUrl":"10.1093/jxb/eraf027","url":null,"abstract":"SUPPRESSOR OF MAX2 1 (SMAX1) and SMAX1-LIKE (SMXL) proteins comprise a family of plant growth regulators that includes downstream targets of the karrikin (KAR)/KAI2 ligand (KL) and strigolactone (SL) signaling pathways. Following the perception of KAR/KL or SL signals by α/β hydrolases, some types of SMXL proteins are polyubiquitinated by an E3 ubiquitin ligase complex containing the F-box protein MORE AXILLARY GROWTH2 (MAX2)/DWARF3 (D3), and proteolyzed. Because SMXL proteins interact with TOPLESS (TPL) and TPL-related (TPR) transcriptional co-repressors, SMXL degradation initiates changes in gene expression. This simplified model of SMXL regulation and function in plants must now be revised in light of recent discoveries. It has become apparent that SMXL abundance is not regulated by KAR/KL or SL alone, and that some SMXL proteins are not regulated by MAX2/D3 at all. Therefore, SMXL proteins should be considered as signaling hubs that integrate multiple cues. Here we review the current knowledge of how SMXL proteins impose transcriptional regulation of plant development and environmental responses. SMXL proteins can bind DNA directly and interact with transcriptional regulators from several protein families. Multiple mechanisms of downstream genetic control by SMXL proteins have been identified recently that do not involve the recruitment of TPL/TPR, expanding the paradigm of SMXL function.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":"1888-1906"},"PeriodicalIF":5.6,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143046522","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