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Unraveling salt stress effects in guard cells of salt stressed Vicia faba L genotypes that contrast in their degree to salt tolerance

揭示盐胁迫对蚕豆 L 基因型保卫细胞的影响，其程度与耐盐性形成鲜明对比

基本信息

批准号：
320167376
负责人：
Professor Dr. Christian Zörb
金额：
--
依托单位：
Fachgebiet Qualität pflanzlicher Erzeugnisse (340e)
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2016
资助国家：
德国
起止时间：
2015-12-31 至 2019-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/320167376?language=en
关键词：
Unraveling salt stress effects guard

项目摘要

Faba bean (Vicia faba L.) is an important source for dietary protein intake for both, human and livestock and is often cultivated at locations with limited soil properties, i.e. dry land agriculture with irrigation or high salt loadings. About 30% of the irrigated cropland are affected by salinity. Unraveling physiological adaptation mechanisms that lead to a better understanding of salt tolerance is therefore an important scientific objective for improving tolerance of hitherto salt sensitive crops. Faba bean is classified as a salt sensitive crop. Nevertheless, genetic material is available that shows a gradient in the degree of salt resistance of faba bean. This enables to conduct a study using genotypes that belonging to the same species but markedly vary in their degree of salt tolerance. Such a project will reveal contrasting features of physiological functions that may bear a causal relation to the differential response to salt. This work aims to diversify crop production by arming breeders with new physiological knowledge about tolerance mechanisms of field beans to salt. In particular, this project aims to analyze salt stress effects on stomata-related processes. Stomata dysfunctions would inevitably have severe detrimental effects on growth and development. Therefore, a genotype that is able to maintain guard cell functionality and water status might have a better performance under salt stress. To our best knowledge, dicotyl guard cells were never before subjected to such a study that aims to identify mechanisms underlying eco-physiological adjustments to salt stress.

蚕豆（Vicia faba L.）是人类和牲畜膳食蛋白质摄入的重要来源，通常在土壤性质有限的地方种植，即灌溉或高盐负荷的旱地农业。大约30%的灌溉农田受到盐碱化的影响。因此，揭示生理适应机制，导致更好地了解耐盐性是一个重要的科学目标，以提高迄今盐敏感作物的耐受性。蚕豆被归类为盐敏感作物。尽管如此，遗传物质是可用的，显示了蚕豆耐盐程度的梯度。这使得能够使用属于相同物种但耐盐程度显著不同的基因型进行研究。这样一个项目将揭示生理功能的对比特征，这些功能可能与对盐的不同反应有因果关系。这项工作的目的是通过武装育种家与新的生理知识的耐盐机制的田间豆类作物生产多样化。特别是，该项目旨在分析盐胁迫对气孔相关过程的影响。气孔功能障碍将不可避免地对植物的生长发育产生严重的不利影响。因此，能够维持保卫细胞功能和水分状态的基因型在盐胁迫下可能具有更好的性能。据我们所知，双子叶保卫细胞以前从未进行过这样的研究，旨在确定潜在的生理生态调节机制，盐胁迫。