Journal of Experimental Botany最新文献_第9页

Genetic architecture of phosphorus-use-efficiency across diverse environmental conditions: Insights from maize elite and landrace lines. 不同环境条件下磷利用效率的遗传结构：玉米精英品系和陆地品系的启示。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2024-10-21 DOI: 10.1093/jxb/erae431

Sandra Roller, Tobias Würschum

{"title":"Genetic architecture of phosphorus-use-efficiency across diverse environmental conditions: Insights from maize elite and landrace lines.","authors":"Sandra Roller, Tobias Würschum","doi":"10.1093/jxb/erae431","DOIUrl":"10.1093/jxb/erae431","url":null,"abstract":"Phosphorus is an essential nutrient for all crops. Thus, a better understanding of the genetic control of phosphorus-use-efficiency reflected in physiological, developmental, and morphological traits and its environmental plasticity is required to establish the basis for maintaining or enhancing yield while making agriculture more sustainable. In this study, we utilized a diverse panel of maize (Zea mays L.), including 398 elite and landrace lines, phenotyped across three environments and two phosphorus fertilization treatments. We performed genome-wide association mapping for 13 traits, including phosphorus uptake and allocation, that showed a strong environment-dependency in their expression. Our results highlight the complex genetic architecture of phosphorus-use-efficiency as well as the substantial differences between the evaluated genetic backgrounds. Despite harboring more of the identified QTL, almost all of the favourable alleles from landraces were found to be present in at least one of the two elite heterotic groups. Notably, we also observed trait-specific genetic control even among biologically related characteristics, as well as a substantial plasticity of the genetic architecture of several traits in response to the environment and P fertilization. Collectively, our work illustrates the difficulties in improving phosphorus-use-efficiency but also presents possible solutions for the future contribution of plant breeding to improve the phosphorus cycle.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":""},"PeriodicalIF":5.6,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142467316","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

Correction to: Scaling of leaf area with biomass in trees reconsidered: constant metabolically active sapwood volume per unit leaf area with height growth. 更正：重新考虑树木叶面积与生物量的比例关系：单位叶面积的代谢活性边材体积随高度增长保持不变。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2024-10-17 DOI: 10.1093/jxb/erae426

引用次数: 0

Histone modifications affecting plant dormancy and dormancy release: common regulatory effects on hormone metabolism. 影响植物休眠和休眠解除的组蛋白修饰：对激素代谢的共同调节作用。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2024-10-16 DOI: 10.1093/jxb/erae205

Hikaru Sato, Hisayo Yamane

{"title":"Histone modifications affecting plant dormancy and dormancy release: common regulatory effects on hormone metabolism.","authors":"Hikaru Sato, Hisayo Yamane","doi":"10.1093/jxb/erae205","DOIUrl":"10.1093/jxb/erae205","url":null,"abstract":"As sessile organisms, plants enter periods of dormancy in response to environmental stresses to ensure continued growth and reproduction in the future. During dormancy, plant growth is suppressed, adaptive/survival mechanisms are exerted, and stress tolerance increases over a prolonged period until the plants resume their development or reproduction under favorable conditions. In this review, we focus on seed dormancy and bud dormancy, which are critical for adaptation to fluctuating environmental conditions. We provide an overview of the physiological characteristics of both types of dormancy as well as the importance of the phytohormones abscisic acid and gibberellin for establishing and releasing dormancy, respectively. Additionally, recent epigenetic analyses have revealed that dormancy establishment and release are associated with the removal and deposition of histone modifications at the loci of key regulatory genes influencing phytohormone metabolism and signaling, including DELAY OF GERMINATION 1 and DORMANCY-ASSOCIATED MADS-box genes. We discuss our current understanding of the physiological and molecular mechanisms required to establish and release seed dormancy and bud dormancy, while also describing how environmental conditions control dormancy depth, with a focus on the effects of histone modifications.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":"6142-6158"},"PeriodicalIF":5.6,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140891977","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

Cold hardiness-informed budbreak reveals role of freezing temperatures and daily fluctuation in a chill accumulation model. 冷硬性信息萌芽揭示了冷冻温度和日波动在寒冷累积模型中的作用。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2024-10-16 DOI: 10.1093/jxb/erae287

Michael G North, Beth Ann Workmaster, Amaya Atucha, Al P Kovaleski

{"title":"Cold hardiness-informed budbreak reveals role of freezing temperatures and daily fluctuation in a chill accumulation model.","authors":"Michael G North, Beth Ann Workmaster, Amaya Atucha, Al P Kovaleski","doi":"10.1093/jxb/erae287","DOIUrl":"10.1093/jxb/erae287","url":null,"abstract":"Fundamental questions in bud dormancy remain, including what temperatures fulfill dormancy requirements (i.e. chill accumulation). Recent studies demonstrate freezing temperatures promote chill accumulation and cold hardiness influences time to budbreak-the phenotype used for dormancy evaluations. Here we evaluated bud cold hardiness and budbreak responses of grapevines (Vitis hybrids) throughout chill accumulation under three treatments: constant (5 °C), fluctuating (-3.5 to 6.5 °C daily), and field conditions (Madison, WI, USA). Chill treatments experiencing lower temperatures promoted greater gains in cold hardiness (field>fluctuating>constant). All treatments decreased observed time to budbreak with increased chill accumulation. However, perceived treatment effectiveness changed when time to budbreak was adjusted to remove cold acclimation effects. Among three classic chill models (North Carolina, Utah, and Dynamic), none was able to correctly describe adjusted time to budbreak responses to chill accumulation. Thus, a new model is proposed that expands the range of chill accumulation temperatures to include freezing temperatures and enhances chill accumulation under fluctuating temperature conditions. Most importantly, our analysis demonstrates that adjustments for uneven acclimation change the perceived effectiveness of chill treatments. Therefore, future work in bud dormancy would benefit from simultaneously evaluating cold hardiness.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":"6182-6193"},"PeriodicalIF":5.6,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141468504","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

Temperature sum models in plant spring phenology studies: two commonly used methods have different fields of application. 植物春季物候研究中的温度总和模型：两种常用方法有不同的应用领域。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2024-10-16 DOI: 10.1093/jxb/erae363

Rui Zhang, Fucheng Wang, Jinbin Zheng, Lei Chen, Heikki Hänninen, Jiasheng Wu

引用次数: 0

Emerging into the world: regulation and control of dormancy and sprouting in geophytes. 崭露头角"--地肤植物休眠和萌芽的调节与控制。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2024-10-16 DOI: 10.1093/jxb/erae216

Nirupma Kumari, Sonali Kumari Manhas, Joel Jose-Santhi, Diksha Kalia, Firdous Rasool Sheikh, Rajesh Kumar Singh

{"title":"Emerging into the world: regulation and control of dormancy and sprouting in geophytes.","authors":"Nirupma Kumari, Sonali Kumari Manhas, Joel Jose-Santhi, Diksha Kalia, Firdous Rasool Sheikh, Rajesh Kumar Singh","doi":"10.1093/jxb/erae216","DOIUrl":"10.1093/jxb/erae216","url":null,"abstract":"Geophytic plants synchronize growth and quiescence with the external environment to survive and thrive under changing seasons. Together with seasonal growth adaptation, dormancy and sprouting are critical factors determining crop yield and market supply, as various geophytes also serve as major food, floriculture, and ornamental crops. Dormancy in such crops determines crop availability in the market, as most of them are consumed during the dormant stage. On the other hand, uniform/maximal sprouting is crucial for maximum yield. Thus, dormancy and sprouting regulation have great economic importance. Dormancy-sprouting cycles in geophytes are regulated by genetic, exogenous (environmental), and endogenous (genetic, metabolic, hormonal, etc.) factors. Comparatively, the temperature is more dominant in regulating dormancy and sprouting in geophytes, unlike above-ground tissues, where both photoperiod and temperature control are involved. Despite huge economic importance, studies concerning the regulation of dormancy and sprouting are scarce in the majority of geophytes. To date, only a few molecular factors involved in the process have been suggested. Recently, omics studies on molecular and metabolic factors involved in dormancy and growth regulation of underground vegetative tissues have provided more insight into the mechanism. Here, we discuss current knowledge of the environmental and molecular regulation and control of dormancy and sprouting in geophytes, and discuss challenges/questions that need to be addressed in the future for crop improvement.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":"6125-6141"},"PeriodicalIF":5.6,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140910954","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

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2024-10-16 DOI: 10.1093/jxb/erae224

Marina Roitman, Dani Eshel

{"title":"Similar chilling response of dormant buds in potato tuber and woody perennials.","authors":"Marina Roitman, Dani Eshel","doi":"10.1093/jxb/erae224","DOIUrl":"10.1093/jxb/erae224","url":null,"abstract":"Bud dormancy is a survival strategy that plants have developed in their native habitats. It helps them endure harsh seasonal changes by temporarily halting growth and activity until conditions become more favorable. Research has primarily focused on bud dormancy in tree species and the ability to halt growth in vegetative tissues, particularly in meristems. Various plant species, such as potato, have developed specialized storage organs, enabling them to become dormant during their yearly growth cycle. Deciduous trees and potato tubers exhibit a similar type of bud endodormancy, where the bud meristem will not initiate growth, even under favorable environmental conditions. Chilling accumulation activates C-repeat/dehydration responsive element binding (DREB) factors (CBFs) transcription factors that modify the expression of dormancy-associated genes. Chilling conditions shorten the duration of endodormancy by influencing plant hormones and sugar metabolism, which affect the timing and rate of bud growth. Sugar metabolism and signaling pathways can interact with abscisic acid, affecting the symplastic connection of dormant buds. This review explores how chilling affects endodormancy duration and explores the similarity of the chilling response of dormant buds in potato tubers and woody perennials.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":"6076-6092"},"PeriodicalIF":5.6,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140957470","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 heat shock response of plants: new insights into modes of perception and signaling and how hormones contribute. 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 : 2024-10-16 DOI: 10.1093/jxb/erae419

Gönül Dündar, Veronica E Ramirez, Brigitte Poppenberger

{"title":"The heat shock response of plants: new insights into modes of perception and signaling and how hormones contribute.","authors":"Gönül Dündar, Veronica E Ramirez, Brigitte Poppenberger","doi":"10.1093/jxb/erae419","DOIUrl":"https://doi.org/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 the 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 cross-talk 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 HSF modes of activity. 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":""},"PeriodicalIF":5.6,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","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":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sleeping but not defenceless: seed dormancy and protection. 沉睡但并非毫无防卫：种子休眠和保护。

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2024-10-16 DOI: 10.1093/jxb/erae213

Benjamin Hubert, Olivier Leprince, Julia Buitink

{"title":"Sleeping but not defenceless: seed dormancy and protection.","authors":"Benjamin Hubert, Olivier Leprince, Julia Buitink","doi":"10.1093/jxb/erae213","DOIUrl":"10.1093/jxb/erae213","url":null,"abstract":"To ensure their vital role in disseminating the species, dormant seeds have developed adaptive strategies to protect themselves against pathogens and predators. This is orchestrated through the synthesis of an array of constitutive defences that are put in place in a developmentally regulated manner, which are the focus of this review. We summarize the defence activity and the nature of the molecules coming from the exudate of imbibing seeds that leak into their vicinity, also referred to as the spermosphere. As a second layer of protection, the dual role of the seed coat will be discussed; as a physical barrier and a multi-layered reservoir of defence compounds that are synthesized during seed development. Since imbibed dormant seeds can persist in the soil for extensive periods, we address the question of whether during this time a constitutively regulated defence programme is switched on to provide further protection, via the well-defined pathogenesis-related (PR) protein family. In addition, we review the hormonal and signalling pathways that might be involved in the interplay between dormancy and defence and point out questions that need further attention.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":"6110-6124"},"PeriodicalIF":5.6,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11480657/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140957543","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

Regulation of seed dormancy by histone post-translational modifications in the model plant Arabidopsis thaliana. 模式植物拟南芥组蛋白翻译后修饰对种子休眠的调控

IF 5.6 2区生物学

Journal of Experimental Botany Pub Date : 2024-10-16 DOI: 10.1093/jxb/erae236

Marcelo Nogueira do Amaral, Rocío S Tognacca, Gabriela A Auge

{"title":"Regulation of seed dormancy by histone post-translational modifications in the model plant Arabidopsis thaliana.","authors":"Marcelo Nogueira do Amaral, Rocío S Tognacca, Gabriela A Auge","doi":"10.1093/jxb/erae236","DOIUrl":"10.1093/jxb/erae236","url":null,"abstract":"Plants synchronize their growth and development with environmental changes, which is critical for their survival. Among their life cycle transitions, seed germination is key for ensuring the survival and optimal growth of the next generation. However, even under favorable conditions, often germination can be blocked by seed dormancy, a regulatory multilayered checkpoint integrating internal and external signals. Intricate genetic and epigenetic mechanisms underlie seed dormancy establishment, maintenance, and release. In this review, we focus on recent advances that shed light on the complex mechanisms associated with physiological dormancy, prevalent in seed plants, with Arabidopsis thaliana serving as a model. Here, we summarize the role of multiple epigenetic regulators, but with a focus on histone modifications such as acetylation and methylation, that finely tune dormancy responses and influence dormancy-associated gene expression. Understanding these mechanisms can lead to a better understanding of seed biology in general, as well as resulting in the identification of possible targets for breeding climate-resilient plants.","PeriodicalId":15820,"journal":{"name":"Journal of Experimental Botany","volume":" ","pages":"6159-6166"},"PeriodicalIF":5.6,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141071148","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