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The case for sporadic cyanogenic glycoside evolution in plants 植物中零星氰苷进化的案例。
IF 8.3 2区 生物学
Current opinion in plant biology Pub Date : 2024-07-31 DOI: 10.1016/j.pbi.2024.102608
{"title":"The case for sporadic cyanogenic glycoside evolution in plants","authors":"","doi":"10.1016/j.pbi.2024.102608","DOIUrl":"10.1016/j.pbi.2024.102608","url":null,"abstract":"<div><p>Cyanogenic glycosides are α-hydroxynitrile glucosides present in approximately 3000 different plant species. Upon tissue disruption, cyanogenic glycosides are hydrolyzed to release toxic hydrogen cyanide as a means of chemical defense. Over 100 different cyanogenic glycosides have been reported, with structural diversity dependent on the precursor amino acid, and subsequent modifications. Cyanogenic glycosides represent a prime example of sporadic metabolite evolution, with the metabolic trait arising multiple times throughout the plant lineage as evidenced by recruitment of different enzyme families for biosynthesis. Here, we review the latest developments within cyanogenic glycoside biosynthesis, and argue possible factors driving sporadic evolution including shared intermediates and crossovers with other metabolic pathways crossovers, and metabolite multifunctionality beyond chemical defense.</p></div>","PeriodicalId":11003,"journal":{"name":"Current opinion in plant biology","volume":null,"pages":null},"PeriodicalIF":8.3,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1369526624000992/pdfft?md5=0153d55aa0f4137434ab5832b902ab9b&pid=1-s2.0-S1369526624000992-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141874390","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 gynostemium: More than the sum of its parts with emerging floral complexities 绞股蓝：新出现的复杂花朵，超越了各部分的总和。
IF 8.3 2区 生物学
Current opinion in plant biology Pub Date : 2024-07-30 DOI: 10.1016/j.pbi.2024.102609
{"title":"The gynostemium: More than the sum of its parts with emerging floral complexities","authors":"","doi":"10.1016/j.pbi.2024.102609","DOIUrl":"10.1016/j.pbi.2024.102609","url":null,"abstract":"<div><p>Partial or complete floral organ fusion, which occurs in most angiosperm lineages, promotes integration of whorls leading to specialization and complexity. One of the most remarkable floral organ fusions occurs in the gynostemium, a highly specialized structure formed by the congenital fusion of the androecium and the upper portion of the gynoecium. Here we review the gynostemia evolution across flowering plants, the morphological requirements for the synorganization of the two fertile floral whorls, and the molecular basis most likely responsible for such intimate fusion process.</p></div>","PeriodicalId":11003,"journal":{"name":"Current opinion in plant biology","volume":null,"pages":null},"PeriodicalIF":8.3,"publicationDate":"2024-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1369526624001006/pdfft?md5=8c5d4bd6bb5a04cc41b51b915ba29cce&pid=1-s2.0-S1369526624001006-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141859309","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 evolution of tropane alkaloids: Coca does it differently 托烷生物碱的演变：古柯的演化与众不同
IF 8.3 2区 生物学
Current opinion in plant biology Pub Date : 2024-07-26 DOI: 10.1016/j.pbi.2024.102606
{"title":"The evolution of tropane alkaloids: Coca does it differently","authors":"","doi":"10.1016/j.pbi.2024.102606","DOIUrl":"10.1016/j.pbi.2024.102606","url":null,"abstract":"<div><p>It is undeniable that tropane alkaloids (TAs) have been both beneficial and detrimental to human health in the modern era. Understanding their biosynthesis is vital for using synthetic biology to engineer organisms for pharmaceutical production. The most parsimonious approaches to pathway elucidation are traditionally homology-based methods. However, this approach has largely failed for TA biosynthesis in angiosperms. In the recent decade, significant progress has been made in elucidating the TA synthesis pathway in <em>Erythroxylum coca</em>, highlighting the parallel development of TAs in both the Solanaceae and Erythroxylaceae families. This separate evolutionary path has uncovered substantial divergence in the TAs formed by <em>E. coca</em> and distinct enzymatic reactions that differ from the traditional TA biosynthetic pathway found in TA-producing nightshade plants.</p></div>","PeriodicalId":11003,"journal":{"name":"Current opinion in plant biology","volume":null,"pages":null},"PeriodicalIF":8.3,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1369526624000979/pdfft?md5=1f0b72d7384c3e58efd4e0b7054b8033&pid=1-s2.0-S1369526624000979-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141787533","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
Cellular insights into legume root infection by rhizobia 根瘤菌感染豆科植物根部的细胞洞察力。
IF 8.3 2区 生物学
Current opinion in plant biology Pub Date : 2024-07-26 DOI: 10.1016/j.pbi.2024.102597
{"title":"Cellular insights into legume root infection by rhizobia","authors":"","doi":"10.1016/j.pbi.2024.102597","DOIUrl":"10.1016/j.pbi.2024.102597","url":null,"abstract":"<div><p>Legume plants establish an endosymbiosis with nitrogen-fixing rhizobia bacteria, which are taken up from the environment anew by each host generation. This requires a dedicated genetic program on the host side to control microbe invasion, involving coordinated reprogramming of host cells to create infection structures that facilitate inward movement of the symbiont. Infection initiates in the epidermis, with different legumes utilizing distinct strategies for crossing this cell layer, either between cells (intercellular infection) or transcellularly (infection thread infection). Recent discoveries on the plant side using fluorescent-based imaging approaches have illuminated the spatiotemporal dynamics of infection, underscoring the importance of investigating this process at the dynamic single-cell level. Extending fluorescence-based live-dynamic approaches to the bacterial partner opens the exciting prospect of learning how individual rhizobia reprogram from rhizospheric to a host-confined state during early root infection.</p></div>","PeriodicalId":11003,"journal":{"name":"Current opinion in plant biology","volume":null,"pages":null},"PeriodicalIF":8.3,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1369526624000888/pdfft?md5=9b8d2494bebe37509d52074228b855a5&pid=1-s2.0-S1369526624000888-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141787532","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
Plant specialized metabolism: Diversity of terpene synthases and their products 植物的特殊代谢：萜烯合成酶及其产物的多样性。
IF 8.3 2区 生物学
Current opinion in plant biology Pub Date : 2024-07-24 DOI: 10.1016/j.pbi.2024.102607
{"title":"Plant specialized metabolism: Diversity of terpene synthases and their products","authors":"","doi":"10.1016/j.pbi.2024.102607","DOIUrl":"10.1016/j.pbi.2024.102607","url":null,"abstract":"<div><p>Terpenoids are ubiquitous to all kingdoms of life and are one of the most diverse groups of compounds, both structurally and functionally. Despite being derived from common precursors, isopentenyl diphosphate and dimethylallyl diphosphate, their exceptional diversity is partly driven by the substrate and product promiscuity of terpene synthases that produce a wide array of terpene skeletons. Plant terpene synthases can be subdivided into different subfamilies based on sequence homology and function. However, in many cases, structural architecture of the enzyme is more essential to product specificity than primary sequence alone, and distantly related terpene synthases can often mediate similar reactions. As such, the focus of this brief review is on some of the recent progress in understanding terpene synthase function and diversity.</p></div>","PeriodicalId":11003,"journal":{"name":"Current opinion in plant biology","volume":null,"pages":null},"PeriodicalIF":8.3,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141757636","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
Recent advances in local and systemic nitrate signaling in Arabidopsis thaliana 拟南芥局部和系统硝酸盐信号的最新进展
IF 8.3 2区 生物学
Current opinion in plant biology Pub Date : 2024-07-20 DOI: 10.1016/j.pbi.2024.102605
{"title":"Recent advances in local and systemic nitrate signaling in Arabidopsis thaliana","authors":"","doi":"10.1016/j.pbi.2024.102605","DOIUrl":"10.1016/j.pbi.2024.102605","url":null,"abstract":"<div><p>Nitrate is the most abundant form of inorganic nitrogen in aerobic soils, serving both as a nutrient and a signaling molecule. Central to nitrate signaling in higher plants is the intricate balance between local and systemic signaling and response pathways. The interplay between local and systemic responses allows plants to regulate their global gene expression, metabolism, physiology, growth, and development under fluctuating nitrate availability. This review offers an overview of recent discoveries regarding new players on nitrate sensing and signaling, in local and systemic contexts in <em>Arabidopsis thaliana</em>. Additionally, it addresses unanswered questions that warrant further investigation for a better understanding of nitrate signaling and responses in plants.</p></div>","PeriodicalId":11003,"journal":{"name":"Current opinion in plant biology","volume":null,"pages":null},"PeriodicalIF":8.3,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141732067","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
Stem-borne roots as a framework to study trans-organogenesis and uncover fundamental insights in developmental biology 将茎生根作为研究跨器官发生的框架，揭示发育生物学的基本观点
IF 8.3 2区 生物学
Current opinion in plant biology Pub Date : 2024-07-20 DOI: 10.1016/j.pbi.2024.102604
{"title":"Stem-borne roots as a framework to study trans-organogenesis and uncover fundamental insights in developmental biology","authors":"","doi":"10.1016/j.pbi.2024.102604","DOIUrl":"10.1016/j.pbi.2024.102604","url":null,"abstract":"<div><p>Plants have a remarkable ability to generate organs with a different identity to the parent organ, called ‘trans-organogenesis’. An example of trans-organogenesis is the formation of roots from stems (a type of adventitious root), which is the first type of root that arose during plant evolution. Despite being ancestral, stem-borne roots are often contextualised through lateral root research, implying that lateral roots precede adventitious roots. In this review we challenge that idea, highlight what is known about stem-borne root development across the plant kingdom, the remarkable diversity in form and function, and the many remaining evolutionary questions. Exploring stem-borne root evolutionary development can enhance our understanding of developmental decision making and the processes by which cells acquire their fates.</p></div>","PeriodicalId":11003,"journal":{"name":"Current opinion in plant biology","volume":null,"pages":null},"PeriodicalIF":8.3,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141732074","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
Understanding plant responsiveness to microbiome feedbacks 了解植物对微生物群反馈的反应能力
IF 8.3 2区 生物学
Current opinion in plant biology Pub Date : 2024-07-17 DOI: 10.1016/j.pbi.2024.102603
{"title":"Understanding plant responsiveness to microbiome feedbacks","authors":"","doi":"10.1016/j.pbi.2024.102603","DOIUrl":"10.1016/j.pbi.2024.102603","url":null,"abstract":"<div><p>Plant microbiome interactions are bidirectional with processes leading to microbiome assembly and processes leading to effects on plants, so called microbiome feedbacks. With belowground focus we systematically decomposed both of these directions into plant and (root and rhizosphere) microbiome components to identify methodological challenges and research priorities. We found that the bidirectionality of plant microbiome interactions presents a challenge for genetic studies. Establishing causality is particularly difficult when a plant mutant has both, an altered phenotype and an altered microbiome. Is the mutation directly affecting the microbiome (e.g., through root exudates), which then causes an altered phenotype of the plant and/or is the altered microbiome the consequence of the mutation altering the plant's phenotype (e.g., root architecture)? Here, we put forward that feedback experiments allow to separate cause and effect and furthermore, they are useful for investigating plant interactions with complex microbiomes in natural soils. They especially allow to investigate the plant genetic basis how plants respond to soil microbiomes and we stress that such microbiome feedbacks are understudied compared to the mechanisms contributing to microbiome assembly. Thinking towards application, this may allow to develop crops with both abilities to assemble a beneficial microbiome and to actively exploit its feedbacks.</p></div>","PeriodicalId":11003,"journal":{"name":"Current opinion in plant biology","volume":null,"pages":null},"PeriodicalIF":8.3,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1369526624000943/pdfft?md5=107a1d3f8c323184b75991d3f09b6ce5&pid=1-s2.0-S1369526624000943-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141636494","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
Time's up: Epigenetic clocks in plants 时间到了植物的表观遗传时钟
IF 8.3 2区 生物学
Current opinion in plant biology Pub Date : 2024-07-17 DOI: 10.1016/j.pbi.2024.102602
{"title":"Time's up: Epigenetic clocks in plants","authors":"","doi":"10.1016/j.pbi.2024.102602","DOIUrl":"10.1016/j.pbi.2024.102602","url":null,"abstract":"<div><p>For over a decade, the animal field has led the way in using DNA methylation measurements to construct epigenetic clocks of aging. These clocks can predict organismal age with a level of accuracy that surpasses any other molecular proxy known to date. Evidence is finally emerging that epigenetic clocks also exist in plants. However, these clocks appear to differ from those in animals in some key aspects, including in their ability to measure time beyond the life span of an individual. Clock-like epigenetic changes can be found in plant circadian rhythms (scale: 24 h), during plant aging (scale: weeks/centuries), and across plant lineage evolution (scale: decades/millennia). Here, we provide a first classification of these different types of epigenetic clocks, highlight their main features, and discuss their biological basis.</p></div>","PeriodicalId":11003,"journal":{"name":"Current opinion in plant biology","volume":null,"pages":null},"PeriodicalIF":8.3,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1369526624000931/pdfft?md5=60110a86ecbedd1f1d26aab21fa93e48&pid=1-s2.0-S1369526624000931-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141636473","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
Chemical, pharmacological properties and biosynthesis of opioid mitragynine in Mitragyna speciosa (kratom) Mitragyna speciosa（桔梗）中阿片类物质丝氨酸的化学、药理特性和生物合成。
IF 8.3 2区 生物学
Current opinion in plant biology Pub Date : 2024-07-12 DOI: 10.1016/j.pbi.2024.102600
Jorge Jonathan Oswaldo Garza-Garcia, Yang Qu
{"title":"Chemical, pharmacological properties and biosynthesis of opioid mitragynine in Mitragyna speciosa (kratom)","authors":"Jorge Jonathan Oswaldo Garza-Garcia,&nbsp;Yang Qu","doi":"10.1016/j.pbi.2024.102600","DOIUrl":"10.1016/j.pbi.2024.102600","url":null,"abstract":"<div><p>Mitragynine, an alkaloid found in <em>Mitragyna speciosa</em> (kratom), shows promise as a potential alternative to opioids owing to its distinctive indole alkaloid structure and its capacity for pain relief, alleviation of opioid withdrawal symptoms, and anti-inflammatory effects. Recently the intricate process of mitragynine biosynthesis from the precursor strictosidine was elucidated, providing insights into the complex pathways responsible for synthesizing this opioid compound and its related diastereomers. As the search continues for the authentic hydroxylase and methyltransferase crucial for mitragynine formation, leveraging enzymes from other species and exploiting enzyme promiscuity has facilitated heterologous mitragynine biosynthesis in microbes. This highlights the extraordinary flexibility of enzymes in generating a spectrum of variations and analogs of kratom opioids within alternative biological systems.</p></div>","PeriodicalId":11003,"journal":{"name":"Current opinion in plant biology","volume":null,"pages":null},"PeriodicalIF":8.3,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1369526624000918/pdfft?md5=ed10bb65de9dcb7bd75f5706aa0fba05&pid=1-s2.0-S1369526624000918-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141603426","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
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