Nature Plants最新文献_第2页

Boreal tree species diversity increases with global warming but is reversed by extremes 北方树木物种多样性随全球变暖而增加，但因极端天气而逆转

IF 18 1区生物学

Nature Plants Pub Date : 2024-09-11 DOI: 10.1038/s41477-024-01794-w

Yanbiao Xi, Wenmin Zhang, Fangli Wei, Zhongxiang Fang, Rasmus Fensholt

{"title":"Boreal tree species diversity increases with global warming but is reversed by extremes","authors":"Yanbiao Xi, Wenmin Zhang, Fangli Wei, Zhongxiang Fang, Rasmus Fensholt","doi":"10.1038/s41477-024-01794-w","DOIUrl":"https://doi.org/10.1038/s41477-024-01794-w","url":null,"abstract":"Tree species diversity is essential to sustaining stable forest ecosystem functioning. However, it remains unclear how boreal tree species diversity has changed in response to climate change and how it is associated with productivity and the temporal stability of boreal forest ecosystems. By combining 5,312 field observations and 55,560 Landsat images, here we develop a framework to estimate boreal tree species diversity (represented by the Shannon diversity index, H′) for the years 2000, 2010 and 2020. We document an average increase in H′ by 12% from 2000 to 2020 across the boreal forests. This increase accounts for 53% of all boreal forest areas and mainly occurs in the eastern forest–boreal transition region, the Okhotsk–Manchurian taiga and the Scandinavian–Russian taiga. Tree species diversity responds positively to increasing temperatures, but the relationship is weakened for higher temperature changes, and in areas of extreme warming (>0.065 °C yr−1), a negative impact on tree species diversity is found. We further show that the observed spatiotemporal increase in diversity is significantly associated with increased productivity and temporal stability of boreal forest biomass. Our results highlight climate-warming-driven increases in boreal tree species diversity that positively affect boreal ecosystem functioning but are countered in areas of extreme warming.","PeriodicalId":18904,"journal":{"name":"Nature Plants","volume":null,"pages":null},"PeriodicalIF":18.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142166290","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

Increases in plant phenotypic diversity in response to aridity and grazing 植物表型多样性因干旱和放牧而增加

IF 18 1区生物学

Nature Plants Pub Date : 2024-09-11 DOI: 10.1038/s41477-024-01803-y

Catherine Walker

{"title":"Increases in plant phenotypic diversity in response to aridity and grazing","authors":"Catherine Walker","doi":"10.1038/s41477-024-01803-y","DOIUrl":"https://doi.org/10.1038/s41477-024-01803-y","url":null,"abstract":"Led by Yoann Le Bagousse-Pinguet of Avignon University, an international team of researchers undertook global field surveys of drylands, gathering data on plant morphology, traits and the chemical composition of the 301 plant species encountered. A compilation of more than 130,000 trait measurements revealed that once an aridity threshold has been passed, plant trait diversity in fact doubles.This threshold represents the transition from semi-arid to arid conditions, and previous studies have shown that once this threshold has been passed, abrupt changes occur, including declines in soil fertility, plant productivity, cover and species richness. The surprising increase in plant functional diversity uncovered in this study was found to be coupled with declines in plant cover, leading the authors of this study to hypothesize that the increase in plant trait diversity was driven by a breakdown in plant–plant interactions that allows unique species to escape competition. This idea was supported by the finding that increases in grazing pressure, a major driver of decreasing plant cover, expand the plant trait space and modulate the aridity threshold at which trait diversity increased.","PeriodicalId":18904,"journal":{"name":"Nature Plants","volume":null,"pages":null},"PeriodicalIF":18.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142166292","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

Understanding cell-type-specific regulation during seed germination 了解种子萌发过程中细胞类型的特异性调控

IF 18 1区生物学

Nature Plants Pub Date : 2024-09-10 DOI: 10.1038/s41477-024-01772-2

引用次数: 0

Establishment of single-cell transcriptional states during seed germination 种子萌发过程中单细胞转录状态的建立

IF 18 1区生物学

Nature Plants Pub Date : 2024-09-10 DOI: 10.1038/s41477-024-01771-3

Lim Chee Liew, Yue You, Lucas Auroux, Marina Oliva, Marta Peirats-Llobet, Sophia Ng, Muluneh Tamiru-Oli, Oliver Berkowitz, Uyen Vu Thuy Hong, Asha Haslem, Tim Stuart, Matthew E. Ritchie, George W. Bassel, Ryan Lister, James Whelan, Quentin Gouil, Mathew G. Lewsey

{"title":"Establishment of single-cell transcriptional states during seed germination","authors":"Lim Chee Liew, Yue You, Lucas Auroux, Marina Oliva, Marta Peirats-Llobet, Sophia Ng, Muluneh Tamiru-Oli, Oliver Berkowitz, Uyen Vu Thuy Hong, Asha Haslem, Tim Stuart, Matthew E. Ritchie, George W. Bassel, Ryan Lister, James Whelan, Quentin Gouil, Mathew G. Lewsey","doi":"10.1038/s41477-024-01771-3","DOIUrl":"https://doi.org/10.1038/s41477-024-01771-3","url":null,"abstract":"Germination involves highly dynamic transcriptional programs as the cells of seeds reactivate and express the functions necessary for establishment in the environment. Individual cell types have distinct roles within the embryo, so must therefore have cell type-specific gene expression and gene regulatory networks. We can better understand how the functions of different cell types are established and contribute to the embryo by determining how cell type-specific transcription begins and changes through germination. Here we describe a temporal analysis of the germinating Arabidopsis thaliana embryo at single-cell resolution. We define the highly dynamic cell type-specific patterns of gene expression and how these relate to changing cellular function as germination progresses. Underlying these are unique gene regulatory networks and transcription factor activity. We unexpectedly discover that most embryo cells transition through the same initial transcriptional state early in germination, even though cell identity has already been established during embryogenesis. Cells later transition to cell type-specific gene expression patterns. Furthermore, our analyses support previous findings that the earliest events leading to the induction of seed germination take place in the vasculature. Overall, our study constitutes a general framework with which to characterize Arabidopsis cell transcriptional states through seed germination, allowing investigation of different genotypes and other plant species whose seed strategies may differ.","PeriodicalId":18904,"journal":{"name":"Nature Plants","volume":null,"pages":null},"PeriodicalIF":18.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142160371","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

Comparisons of two receptor-MAPK pathways in a single cell-type reveal mechanisms of signalling specificity 单一细胞类型中两种受体-MAPK 通路的比较揭示了信号特异性机制

IF 18 1区生物学

Nature Plants Pub Date : 2024-09-10 DOI: 10.1038/s41477-024-01768-y

Yan Ma, Isabelle Flückiger, Jade Nicolet, Jia Pang, Joe B. Dickinson, Damien De Bellis, Aurélia Emonet, Satoshi Fujita, Niko Geldner

{"title":"Comparisons of two receptor-MAPK pathways in a single cell-type reveal mechanisms of signalling specificity","authors":"Yan Ma, Isabelle Flückiger, Jade Nicolet, Jia Pang, Joe B. Dickinson, Damien De Bellis, Aurélia Emonet, Satoshi Fujita, Niko Geldner","doi":"10.1038/s41477-024-01768-y","DOIUrl":"https://doi.org/10.1038/s41477-024-01768-y","url":null,"abstract":"Cells harbour numerous receptor pathways to respond to diverse stimuli, yet often share common downstream signalling components. Mitogen-activated protein kinase (MPK) cascades are an example of such common hubs in eukaryotes. How such common hubs faithfully transduce distinct signals within the same cell-type is insufficiently understood, yet of fundamental importance for signal integration and processing in plants. We engineered a unique genetic background allowing direct comparisons of a developmental and an immunity pathway in one cell-type, the Arabidopsis root endodermis. We demonstrate that the two pathways maintain distinct functional and transcriptional outputs despite common MPK activity patterns. Nevertheless, activation of different MPK kinases and MPK classes led to distinct functional readouts, matching observed pathway-specific readouts. On the basis of our comprehensive analysis of core MPK signalling elements, we propose that combinatorial activation within the MPK cascade determines the differential regulation of an endodermal master transcription factor, MYB36, that drives pathway-specific gene activation.","PeriodicalId":18904,"journal":{"name":"Nature Plants","volume":null,"pages":null},"PeriodicalIF":18.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142160373","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

Roles of microbiota in autoimmunity in Arabidopsis leaves 拟南芥叶片中微生物群在自身免疫中的作用

IF 18 1区生物学

Nature Plants Pub Date : 2024-09-06 DOI: 10.1038/s41477-024-01779-9

Yu Ti Cheng, Caitlin A. Thireault, Li Zhang, Bradley C. Paasch, Reza Sohrabi, Sheng Yang He

{"title":"Roles of microbiota in autoimmunity in Arabidopsis leaves","authors":"Yu Ti Cheng, Caitlin A. Thireault, Li Zhang, Bradley C. Paasch, Reza Sohrabi, Sheng Yang He","doi":"10.1038/s41477-024-01779-9","DOIUrl":"https://doi.org/10.1038/s41477-024-01779-9","url":null,"abstract":"Over the past three decades, researchers have isolated plant mutants that show constitutively activated defence responses in the absence of pathogen infection. These mutants are called autoimmune mutants and are typically dwarf and/or bearing chlorotic/necrotic lesions. Here, from a genetic screen for Arabidopsis genes involved in maintaining a normal leaf microbiota, we identified TIP GROWTH DEFECTIVE 1 (TIP1), which encodes an S-acyltransferase, as a key player in guarding leaves against abnormal microbiota level and composition under high-humidity conditions. The tip1 mutant has several characteristic phenotypes of classical autoimmune mutants, including a dwarf stature, showing lesions, and having a high basal level of defence gene expression. Gnotobiotic experiments revealed that the autoimmune phenotypes of the tip1 mutant are largely dependent on the presence of microbiota as axenic tip1 plants have markedly reduced autoimmune phenotypes. We found that the microbiota dependency of autoimmune phenotypes is shared by several ‘lesion mimic’-type autoimmune mutants in Arabidopsis. It is worth noting that autoimmune phenotypes caused by mutations in two Nucleotide-Binding, Leucine-Rich Repeat (NLR) genes do not require the presence of microbiota and can even be partially alleviated by microbiota. Our results therefore suggest the existence of at least two classes of autoimmunity (microbiota-dependent versus microbiota-independent) in plants. The observed interplay between autoimmunity and microbiota in the lesion mimic class of autoimmunity is reminiscent of the interactions between autoimmunity and dysbiosis in the animal kingdom. These parallels highlight the intricate relationship between host immunity and microbial communities across various biological systems.","PeriodicalId":18904,"journal":{"name":"Nature Plants","volume":null,"pages":null},"PeriodicalIF":18.0,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142142416","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

Optimized dicot prime editing enables heritable desired edits in tomato and Arabidopsis 优化的双子叶植物基因编辑技术可在番茄和拟南芥中实现可遗传的所需编辑

IF 18 1区生物学

Nature Plants Pub Date : 2024-09-06 DOI: 10.1038/s41477-024-01786-w

Tien Van Vu, Ngan Thi Nguyen, Jihae Kim, Young Jong Song, Thu Hoai Nguyen, Jae-Yean Kim

引用次数: 0

Unbalanced leaf microbiota can cause autoimmunity in plants 叶片微生物群不平衡可导致植物自身免疫

IF 18 1区生物学

Nature Plants Pub Date : 2024-09-06 DOI: 10.1038/s41477-024-01782-0

引用次数: 0

The impact of thermogenesis on the origin of insect pollination 产热对昆虫授粉起源的影响

IF 18 1区生物学

Nature Plants Pub Date : 2024-09-06 DOI: 10.1038/s41477-024-01775-z

David Peris, José Mª Postigo-Mijarra, Enrique Peñalver, Jaume Pellicer, Conrad C. Labandeira, Constanza Peña-Kairath, Iván Pérez-Lorenzo, Hervé Sauquet, Xavier Delclòs, Eduardo Barrón

{"title":"The impact of thermogenesis on the origin of insect pollination","authors":"David Peris, José Mª Postigo-Mijarra, Enrique Peñalver, Jaume Pellicer, Conrad C. Labandeira, Constanza Peña-Kairath, Iván Pérez-Lorenzo, Hervé Sauquet, Xavier Delclòs, Eduardo Barrón","doi":"10.1038/s41477-024-01775-z","DOIUrl":"https://doi.org/10.1038/s41477-024-01775-z","url":null,"abstract":"Thermogenesis in plants is the ability to raise their temperature above that of the surrounding air through metabolic processes, and is especially detected in reproductive organs. Warming benefits plants by facilitating the transmission of odours and compounds that attract insects. As a result, these plants increase their odds of being pollinated by the attracted insect. Modern thermogenesis has been reported in extant cycads and a small number of angiosperm lineages. Although thermogenesis is not directly preserved in the fossil record, it can be inferred by examining extant thermogenic plant lineages and comparing their features with those of the fossil record. We suggest that thermogenesis has probably occurred in seed plants for at least the past 200 million years, long before the origin of angiosperms. Thermogenesis in plants is an important factor that facilitated entomophilous pollination by enhancing the attraction of insects, complementary to other factors, thereby participating in the success of the two groups of organisms and providing many facets of past and recent reproductive biology for future exploration.","PeriodicalId":18904,"journal":{"name":"Nature Plants","volume":null,"pages":null},"PeriodicalIF":18.0,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142142721","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 sucrose ferulate cycle linchpin for ferulyolation of arabinoxylans in plant commelinids 蔗糖阿魏酸酯循环中的一个关键环节，用于植物纤毛虫体内阿魏酸酯的分解

IF 18 1区生物学

Nature Plants Pub Date : 2024-09-04 DOI: 10.1038/s41477-024-01781-1

Dalin Yang, Hui Liu, Xiaojie Li, Yafeng Zhang, Xingwang Zhang, Huanhuan Yang, Mingyu Liu, Karen E. Koch, Donald R. McCarty, Shengying Li, Bao-Cai Tan

{"title":"A sucrose ferulate cycle linchpin for ferulyolation of arabinoxylans in plant commelinids","authors":"Dalin Yang, Hui Liu, Xiaojie Li, Yafeng Zhang, Xingwang Zhang, Huanhuan Yang, Mingyu Liu, Karen E. Koch, Donald R. McCarty, Shengying Li, Bao-Cai Tan","doi":"10.1038/s41477-024-01781-1","DOIUrl":"https://doi.org/10.1038/s41477-024-01781-1","url":null,"abstract":"A transformation in plant cell wall evolution marked the emergence of grasses, grains and related species that now cover much of the globe. Their tough, less digestible cell walls arose from a new pattern of cross-linking between arabinoxylan polymers with distinctive ferulic acid residues. Despite extensive study, the biochemical mechanism of ferulic acid incorporation into cell walls remains unknown. Here we show that ferulic acid is transferred to arabinoxylans via an unexpected sucrose derivative, 3,6-O-diferuloyl sucrose (2-feruloyl-O-α-d-glucopyranosyl-(1′→2)-3,6-O-feruloyl-β-d-fructofuranoside), formed by a sucrose ferulate cycle. Sucrose gains ferulate units through sequential transfers from feruloyl-CoA, initially at the O-3 position of sucrose catalysed by a family of BAHD-type sucrose ferulic acid transferases (SFT1 to SFT4 in maize), then at the O-6 position by a feruloyl sucrose feruloyl transferase (FSFT), which creates 3,6-O-diferuloyl sucrose. An FSFT-deficient mutant of maize, disorganized wall 1 (dow1), sharply decreases cell wall arabinoxylan ferulic acid content, causes accumulation of 3-O-feruloyl sucrose (α-d-glucopyranosyl-(1′→2)-3-O-feruloyl-β-d-fructofuranoside) and leads to the abortion of embryos with defective cell walls. In vivo, isotope-labelled ferulic acid residues are transferred from 3,6-O-diferuloyl sucrose onto cell wall arabinoxylans. This previously unrecognized sucrose ferulate cycle resolves a long-standing mystery surrounding the evolution of the distinctive cell wall characteristics of cereal grains, biofuel crops and related commelinid species; identifies an unexpected role for sucrose as a ferulate group carrier in cell wall biosynthesis; and reveals a new paradigm for modifying cell wall polymers through ferulic acid incorporation.","PeriodicalId":18904,"journal":{"name":"Nature Plants","volume":null,"pages":null},"PeriodicalIF":18.0,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142130840","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