Plant Biology最新文献_第3页

Influence of drought stress on the metabolite and ion composition in nectar and nectaries of different day- and night-flowering Nicotiana species. 干旱胁迫对不同白花和夜花烟草花蜜代谢物和离子组成的影响。

IF 4.2 3区生物学

Plant Biology Pub Date : 2025-02-18 DOI: 10.1111/plb.70000

T Göttlinger, D Naegel, J E Dick, G Lohaus

{"title":"Influence of drought stress on the metabolite and ion composition in nectar and nectaries of different day- and night-flowering Nicotiana species.","authors":"T Göttlinger, D Naegel, J E Dick, G Lohaus","doi":"10.1111/plb.70000","DOIUrl":"https://doi.org/10.1111/plb.70000","url":null,"abstract":"The frequencies of droughts worldwide will increase in the future due to climate changes. Nectar composition of plant species varies in relation to pollinator and can also be influenced by drought. We investigated both different pollinated species and the effects of drought in parallel. In addition, the influence of drought on nectar production and metabolism in nectaries should be investigated, since very little is currently known about this. The influence of drought stress on nectaries, nectar and leaves of 4 day- and night-flowering Nicotiana species (pollinated by sunbirds, hummingbirds, hawkmoths or bats) were investigated. The nectar volume, as well as metabolite concentrations (sugars, amino acids), inorganic ions and starch were measured. PCA and PERMANOVA were applied to determine the relative importance of different drought conditions on metabolism of nectaries and nectar. Drought stress led to changes in composition of nectaries and nectar in all four Nicotiana species. The day-flowering species had relatively similar changes, whereas the night-flowering species differed from these and also from each other. Quantities of sugars, amino acids and inorganic ions per flower decreased sharply in all Nicotiana species because of a strong decrease in nectar volume. Drought stress not only compromises plant growth but also nectar secretion and composition. These changes are likely to affect plant-pollinator interactions and may negatively impact successful pollination.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":" ","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143439445","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

Iron homeostasis in the annual and perennial stem zones of Arabis alpina. 阿拉伯高寒一年生和多年生茎带铁的动态平衡。

IF 4.2 3区生物学

Plant Biology Pub Date : 2025-02-18 DOI: 10.1111/plb.13756

A Sergeeva, H-J Mai, P Bauer

{"title":"Iron homeostasis in the annual and perennial stem zones of Arabis alpina.","authors":"A Sergeeva, H-J Mai, P Bauer","doi":"10.1111/plb.13756","DOIUrl":"https://doi.org/10.1111/plb.13756","url":null,"abstract":"Plants store nutrients, including the micronutrient iron, in bioavailable forms to support growth in subsequent seasons. The perennial lifestyle is preponderant in nature. Arabis alpina is a perennial model organism with a particular architecture of branches having proximal perennial (PZ) and distal annual (AZ) stem zones with distinct anatomy and physiology. PZ undergoes secondary growth and stores carbon-rich macromolecules. Here, we investigated iron homeostasis in PZ versus AZ. We localized iron in stem internodes of PZ and AZ using Perls staining and ferritin immunodetection in the wild-type Pajares (Paj) and perpetual flowering 1 mutant. We mined transcriptome data of the developing PZ and AZ. Iron accumulated at various development stages in PZ and AZ. Iron levels in PZ were ca. two-fold higher than in AZ, irrespective of flowering. Iron was predominantly located within plastid-bound ferritin. Gene expression patterns supported the significance of ferritin and demonstrated enrichment of transcripts related to iron homeostasis within stems. Distinct patterns of expression among iron homeostasis genes were observed in relation to iron content in PZ and AZ, indicating tissue-specific regulatory mechanisms governing iron accumulation. Secondary growth in PZ plays a role in iron storage in the perennial A. alpina, while AZ may transiently store iron for seed production. Future research will address different iron homeostasis signalling pathways in AZ and PZ.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":" ","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143439449","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

B-class gene GLOBOSA – a facilitator for enriched species diversity of Salvia in the New World? b级基因GLOBOSA——新世界鼠尾草物种多样性丰富的推动者？

IF 4.2 3区生物学

Plant Biology Pub Date : 2025-02-18 DOI: 10.1111/plb.70002

S. Wetters, P. Nick

引用次数: 0

Interactions between macro- and micro-climate: Effects on phenolic compound production in Nardus stricta at high elevations 大气候与小气候的相互作用：对高海拔赤豆属植物酚类化合物生产的影响。

IF 4.2 3区生物学

Plant Biology Pub Date : 2025-02-13 DOI: 10.1111/plb.13776

X. Moreira, J. Durán, A. Rodríguez, A. Cao, M. Correia, J. Serôdio, S. Rodríguez-Echeverría

引用次数: 0

Coupled hydraulic and whole-plant economic strategies in twenty warm-temperate woody species 20种暖温带木本植物的水力与全株耦合经济策略。

IF 4.2 3区生物学

Plant Biology Pub Date : 2025-02-13 DOI: 10.1111/plb.13772

Q. Li, N. Wang, X. Liu, X. Sun, X. Li, N. Du, H. Wang, R. Wang

引用次数: 0

Within-plant variation in chemical defence of Erysimum cheiranthoides does not explain Plutella xylostella feeding preference. 植物内化学防御的变异不能解释小菜蛾的取食偏好。

IF 4.2 3区生物学

Plant Biology Pub Date : 2025-02-12 DOI: 10.1111/plb.13777

K Wang, T Züst

{"title":"Within-plant variation in chemical defence of Erysimum cheiranthoides does not explain Plutella xylostella feeding preference.","authors":"K Wang, T Züst","doi":"10.1111/plb.13777","DOIUrl":"https://doi.org/10.1111/plb.13777","url":null,"abstract":"Plants invest a substantial fraction of their resources into defence against herbivores, with the highest levels of defence often allocated only to the most valuable tissues. Plants in the genus Erysimum (Brassicaceae) have evolved the ability to produce novel cardenolides, in addition to ancestrally conserved glucosinolates. While these plants co-express both defences, differences in tissue-specific expression might represent an effective cost-saving strategy. Larvae of the glucosinolate-resistant diamondback moth Plutella xylostella occasionally feed on Erysimum cheiranthoides but tend to avoid younger leaves. Here, we predict that caterpillar feeding preference is shaped by variations in cardenolide levels. Thus, we quantified within-plant variations in defence and nutritional traits of vegetative or early reproductive plants and performed feeding assays to evaluate the relative importance of cardenolides. In accordance with optimal defence theory (ODT), the youngest leaves contained the most nutrients and had highest levels of cardenolides, glucosinolates and trichomes, with more extreme within-plant differences found in reproductive plants. Caterpillars consistently avoided the well-defended youngest leaves, both on whole plants and detached leaf discs. Surprisingly, neither experimental addition (external application) nor removal (CRISPR-Cas9 knockout) of cardenolides significantly affected caterpillar feeding preference. Physical and chemical defences, including cardenolides, co-vary within E. cheiranthoides to maximize defence of youngest leaves. While P. xylostella clearly responds to some of these traits, the prominent cardenolide defence appears to lack potency against this specialist herbivore. Nonetheless, the careful regulation and re-mobilization of cardenolides to younger leaves during plant development suggests an important role in plant functioning.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":" ","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143397591","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

Omic characterisation of multi-component defences against the necrotrophic pathogen Pyrenophora tritici-repentis in wheat 小麦抗坏死性致病菌枯黄菌多组分防御的组学特征。

IF 4.2 3区生物学

Plant Biology Pub Date : 2025-02-07 DOI: 10.1111/plb.13746

L. C. Ferreira, F. M. Santana, S. M. M. Scagliusi, M. Beckmann, L. A. J. Mur

引用次数: 0

Mitigation of salinity stress in salt-sensitive rice seedlings via phytohormone synthesis, antioxidant defence enhancement, and ion balance regulation induced by 5-aminolevulinic acid-producing purple non-sulfur bacteria 5-氨基乙酰丙酸紫色非硫菌诱导的植物激素合成、抗氧化防御增强和离子平衡调节对盐敏感水稻幼苗盐胁迫的缓解

IF 4.2 3区生物学

Plant Biology Pub Date : 2025-02-03 DOI: 10.1111/plb.13773

L. S. Sundar, J.-Y. Wu, Y.-K. Tu, H.-W. Chen, Y.-Y. Chao

引用次数: 0

Development of a novel multivariate germination index to quantify seed hydration memory. 建立一种新的多变量发芽指数来量化种子水化记忆。

IF 4.2 3区生物学

Plant Biology Pub Date : 2025-02-03 DOI: 10.1111/plb.13766

A T Lima, T S Almeida, D G de Santana, M V Meiado

{"title":"Development of a novel multivariate germination index to quantify seed hydration memory.","authors":"A T Lima, T S Almeida, D G de Santana, M V Meiado","doi":"10.1111/plb.13766","DOIUrl":"https://doi.org/10.1111/plb.13766","url":null,"abstract":"In recent decades, the concept of memory has gained significant attention in plant ecophysiology research. When memory is expressed during germination, it is referred to as 'seed hydration memory'. Although numerous metrics relate to different aspects of germination, the literature lacks a method for quantifying seed hydration memory. This study aimed to develop a Germination Memory Index (GMI); a mathematical tool designed to quantify seed memory. The GMI enables comparisons of different native or cultivated species germinating under various conditions following discontinuous hydration. We tested the GMI using data from an experiment that evaluated germination of Cereus jamacaru seeds subjected to water deficit after undergoing hydration and dehydration cycles (HD cycles). The index is calculated as the arithmetic mean of gains, if any, in germination capacity, expressed as germinability, that is time to reach 50% germination, mean germination rate, uniformity of germination, synchrony and germination uncertainty, obtained from discontinuous hydration of the seeds. The memory ranges from 0 ≤ GMI ≤1. Gains are observed when HD cycles enhance germination capacity, germination rate and synchrony while reducing time to reach 50% germination, uniformity and uncertainty compared to their reference values. The absence of memory occurs when GMI ≤0, indicating that the germination process is favourable without undergoing HD cycles. When germination only occurs after discontinuous hydration, GMI = 1. Using the GMI, we can accurately measure gains in germinative behaviour provided by HD cycles, as this index reflects changes not only in germination capacity but also in germination time, speed, uniformity, synchrony and uncertainty.","PeriodicalId":220,"journal":{"name":"Plant Biology","volume":" ","pages":""},"PeriodicalIF":4.2,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143078084","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

Female-biased nectar production is associated with the Darwin's inflorescence syndrome 雌性偏爱的花蜜产生与达尔文花序综合症有关。

IF 4.2 3区生物学

Plant Biology Pub Date : 2025-01-27 DOI: 10.1111/plb.13768

M. M. Strelin, S. S. Gavini, M. A. Aizen

引用次数: 0