Plant Biology最新文献_第7页

Recurrent hot droughts cause persistent legacy effects in a temperate Scots Pine forest. 在温带苏格兰松林中，反复出现的炎热干旱造成了持续的遗留效应。

IF 4.2 3区生物学

Plant Biology Pub Date : 2025-06-16 DOI: 10.1111/plb.70066

S Haberstroh, A Christen, M Sulzer, F Scarpa, C Werner

{"title":"Recurrent hot droughts cause persistent legacy effects in a temperate Scots Pine forest.","authors":"S Haberstroh, A Christen, M Sulzer, F Scarpa, C Werner","doi":"10.1111/plb.70066","DOIUrl":"https://doi.org/10.1111/plb.70066","url":null,"abstract":"Recent hot-dry events have caused significant impacts and legacy effects in temperate ecosystems. Here, we investigate legacy effects of the 2018 hot drought on a Pinus sylvestris L. forest in southwestern Germany and the effects of post-2018 recurrent hot-droughts on ecosystem carbon fluxes. We combined ecophysiological, remote sensing (Enhanced Vegetation Index, EVI) and micrometeorological (Net Ecosystem Carbon Exchange, NEE) measurements to assess past and present ecosystem functioning. We found strong and persistent legacy effects and high tree mortality of P. sylvestris, with deciduous understorey trees slowly replacing P. sylvestris. After 2018, EVI clearly followed the pattern of a deciduous-dominated forest, indicating changes in canopy structure, type and seasonality in NEE. Significant legacy effects in NEE were found and the ecosystem shifted from a carbon sink (NEE = -391 ± 204 g C m-2 year-1, 2003-2006) to carbon neutral (NEE = +13 ± 28 g C m-2 year-1) in 2021, a cold and wet year. All other years post-2018 were hotter and drier than the long-term average (1991-2020), and the ecosystem was turning into a carbon source, with highest values in 2022 (NEE = +329 ± 19 g C m-2 year-1). These compound events of atmospheric and edaphic drought led to strong ecosystem carbon release post-2018. Our data show that the ecosystem most likely experienced strong drought legacy effects, such as 2018, at species, community and ecosystem scales. These negative effects were further exacerbated by recurrent atmospheric and edaphic droughts, shifting the ecosystem to a net carbon source after 2018.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":" ","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144309371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Root water uptake depth in temperate forest trees: species-specific patterns shaped by neighbourhood and environment. 温带森林树木的根系吸水深度：由邻里和环境形成的物种特有模式。

IF 4.2 3区生物学

Plant Biology Pub Date : 2025-06-16 DOI: 10.1111/plb.70058

C A Hackmann, S S Paligi, M Mund, D Hölscher, C Leuschner, K Pietig, C Ammer

{"title":"Root water uptake depth in temperate forest trees: species-specific patterns shaped by neighbourhood and environment.","authors":"C A Hackmann, S S Paligi, M Mund, D Hölscher, C Leuschner, K Pietig, C Ammer","doi":"10.1111/plb.70058","DOIUrl":"https://doi.org/10.1111/plb.70058","url":null,"abstract":"Root water uptake regulates plant transpiration and internal water supply. Forests in Central Europe increasingly face water limitations, highlighting the need to understand tree water sources and consumption. However, knowledge about water uptake depth and how it varies with tree species identity, neighbourhood, site, and environmental conditions remains scarce. We used stable water isotopes to study water uptake depth in pure and mixed stands of European beech (Fagus sylvatica), Douglas fir (Pseudotsuga menziesii), and Norway spruce (Picea abies). Investigations included natural abundance sampling at four sites, and a weekly subsoil tracer experiment (1 m mineral soil depth) at one of these sites. European beech and Douglas fir accessed relatively deeper water than Norway spruce. Beech used deeper water in mixtures with both conifers, while spruce shifted to shallower layers in mixture with beech. Douglas fir showed no significant difference between pure and mixed stand. Deepest uptake occurred on well-drained, sandy soil, while shallowest uptake was on an occasionally stagnic soil. The tracer experiment revealed a relatively low contribution from subsoil water (>1 m, ca. 9%); the organic layer contributed similar magnitudes, but varied more dynamically with tree water consumption. Our results emphasize the importance of species-specific traits and mixture effects in forest water cycles, and how they are mediated by site and environmental conditions. Douglas fir appears more drought resistant than Norway spruce, by accessing deeper water sources. We conclude that beech and Douglas fir may equally coexist, while beech presence exacerbates the drought exposure of spruce.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":" ","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144309373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Responses of grapevine cells to physiological doses of ethanol, including induced resistance to heat stress 葡萄细胞对生理剂量乙醇的反应，包括诱导对热应激的抗性。

IF 3.6 3区生物学

Plant Biology Pub Date : 2025-06-16 DOI: 10.1111/plb.70064

A. Diot, G. Madignier, O. Di Valentin, A. Djari, E. Maza, Y. Chen, S. Blanchet, C. Chervin

引用次数: 0

Current understanding of the role of the cell wall in Cuscuta parasitism. 目前对菟丝子寄生细胞壁作用的认识。

IF 4.2 3区生物学

Plant Biology Pub Date : 2025-06-04 DOI: 10.1111/plb.70059

M Takagawa, R Yokoyama

引用次数: 0

Zoospore diversity and sexual reproduction in the lichen-forming genus Trebouxia: From neglected evidence to new facts 地衣形成属Trebouxia的游动孢子多样性和有性繁殖：从被忽视的证据到新的事实。

IF 3.6 3区生物学

Plant Biology Pub Date : 2025-06-03 DOI: 10.1111/plb.70042

E. Boccato, D. Porrelli, C. G. Ametrano, F. Candotto Carniel, M. Tretiach

引用次数: 0

Ginkgo biloba flavonoids: Analysis of functions, regulatory mechanisms, and extraction 银杏叶总黄酮：功能、调控机制及提取分析。

IF 3.6 3区生物学

Plant Biology Pub Date : 2025-06-03 DOI: 10.1111/plb.70054

C. Wang, W. Zhang, Y. Liao, J. Ye, F. Xu, Q. Wang

{"title":"Ginkgo biloba flavonoids: Analysis of functions, regulatory mechanisms, and extraction","authors":"C. Wang, W. Zhang, Y. Liao, J. Ye, F. Xu, Q. Wang","doi":"10.1111/plb.70054","DOIUrl":"10.1111/plb.70054","url":null,"abstract":"<div>\u0000 \u0000 Ginkgo biloba L. is a protected relict species of the genus Ginkgo in the Ginkgoaceae family that is valued for its ornamental, economic, and medicinal properties. Flavonoids, the primary medicinal components in G. biloba, have anti-inflammatory, anticancer, and antioxidant effects. They specifically inhibit xanthine oxidase and platelet-activating factor receptors, making them effective in treating Alzheimer's disease and hypertension. The breeding of G. biloba typically focuses on selecting and cultivating tree varieties with high flavonoid content. At the molecular level, structural genes and regulatory factors (transcription factors and noncoding RNA) can directly control flavonoid biosynthesis, whereas external environmental factors indirectly regulate it. From a production perspective, improving extraction techniques can effectively address current low flavonoid yields. Advanced extraction technologies, which reduce solvent use and increase both efficiency and yield to meet market demand, are emerging. This review highlights structural genes and regulatory factors (noncoding RNAs and transcription factors) involved in flavonoid biosynthesis, explores how abiotic factors influence flavonoid accumulation, and outlines optimal extraction methods for increasing the flavonoid content in G. biloba. Ultimately, this research aims to provide valuable insights for future production practices and scientific research that will enhance the medicinal and commercial value of G. biloba\u0000 </div>","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":"27 6","pages":"962-974"},"PeriodicalIF":3.6,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144214418","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Ontogenetic shifts in biomass allocation and xylem structure of the world's highest-occurring plants: balancing growth, storage, and resilience in the extreme Himalayan subnival zone 世界最高海拔植物生物量分配和木质部结构的个体发生变化：喜马拉雅极端亚寒带平衡生长、储存和恢复力。

IF 3.6 3区生物学

Plant Biology Pub Date : 2025-05-30 DOI: 10.1111/plb.70045

V. Jandova, J. Dolezal

引用次数: 0

Factors determining chromosomal localization of transposable elements in plants 植物染色体转座因子定位的决定因素。

IF 3.6 3区生物学

Plant Biology Pub Date : 2025-05-29 DOI: 10.1111/plb.70057

E. Kejnovsky, P. Jedlicka, M. Lexa, Z. Kubat

{"title":"Factors determining chromosomal localization of transposable elements in plants","authors":"E. Kejnovsky, P. Jedlicka, M. Lexa, Z. Kubat","doi":"10.1111/plb.70057","DOIUrl":"10.1111/plb.70057","url":null,"abstract":"Transposable elements (TEs) constitute a significant part of plant genomes and shape their genomic landscape. While some TEs are ubiquitously dispersed, other elements specifically occupy discrete genomic loci. The evolutionary forces behind the chromosomal localization of TEs are poorly understood. Therefore, we first review specific chromosomal niches where TEs are often localized including (i) centromeres, (ii) (sub)telomeres, (iii) genes, and (iv) sex chromosomes. In the second part of this review, we focus on the processes standing behind non-equal distribution of various TEs in genomes including (i) purifying selection, (ii) insertion site preference or targeting of TEs, (iii) post-insertion ectopic recombination between TEs, and (iv) spatiotemporal regulation of TE jumping. Using the combination of the above processes, we explain the distribution of TEs on sex chromosomes. We also describe the phenomena of mutual nesting of TEs, epigenetic mark silencing in TEs, and TE interactions in the 3D interphase nucleus concerning TE localization. We summarize the functional consequences of TE distribution and relate them to cell functioning and genome evolution.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":"27 6","pages":"975-989"},"PeriodicalIF":3.6,"publicationDate":"2025-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/plb.70057","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144179506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Characterization of transcriptional and metabolic responses to a complex plant growth-promoting soil inoculum 对一种复杂的促进植物生长的土壤接种物的转录和代谢反应的表征。

IF 3.6 3区生物学

Plant Biology Pub Date : 2025-05-28 DOI: 10.1111/plb.70034

M. T. Brock, K. Nozue, D. J. Kliebenstein, B. E. Ewers, D. S. Mackay, L. Maignien, D. R. Wang, C. Weinig, J. N. Maloof

引用次数: 0

Bait, not reward: CO2-enriched Nepenthes pitchers secrete toxic nectar 诱饵，而不是奖励：富含二氧化碳的猪笼草会分泌有毒的花蜜。

IF 3.6 3区生物学

Plant Biology Pub Date : 2025-05-28 DOI: 10.1111/plb.70033

C. C. Lathika, G. B. Sujatha, G. Thomas, A. J. Johnson, G. Viswanathan, T. S. Varghese, S. Mohamed, L. A. Shereefa, S. Baby

引用次数: 0