农业植物对干旱胁迫的响应——以菜豆为例

A. Sedlar, M. Kidrič, J. Šuštar-Vozlič, B. Pipan, T. Zadražnik, V. Meglič
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引用次数: 5

摘要

干旱是普通豆(Phaseolus vulgaris L.)的主要威胁之一,影响其生长和生产力,从而在世界许多地区造成相当大的产量损失。因此,开发耐干旱品种已成为许多普通豆类育种计划的主要目标之一。植物已经发展出不同的适应机制,或多或少地适应干旱。这些在分子水平上通过基因表达和蛋白质含量的变化以及生理和形态水平上的反应来表达。普通豆对干旱的反应,由于其遗传复杂性和多样性,往往模棱两可,表型效应仍然没有充分表征。因此,了解这些机制对于培育更好地适应这种胁迫条件的品种具有根本的重要性。在本章中,我们提出的研究提供了一个深入了解的形态生理适应及其潜在的分子变化在普通豆类植物暴露于干旱。我们利用分子标记和数量性状位点(qtl)的鉴定,为培育对这种非生物胁迫具有更强耐受性的普通豆奠定了基础。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Drought Stress Response in Agricultural Plants: A Case Study of Common Bean (Phaseolus vulgaris L.)
Drought is one of the major threats to common bean ( Phaseolus vulgaris L.), affecting its growth and productivity and, thus, contributing to considerable losses in yield in many regions worldwide. The development of varieties tolerant of drought stress has, therefore, become one of the primary goals in many common bean breeding programs. Plants have developed various mechanisms of their adaptation, to a greater or lesser extent, to drought. These are expressed, on the molecular level, by changes of gene expression and of protein content, together with responses at physiological and morphological levels. The response of common bean to drought is still not sufficiently well characterized due to its genetic complexity and its diverse, often ambiguous, phenotypic effects. Understanding these mechanisms is thus of fundamental importance for developing varieties that are better adapted to such stress conditions. In this chapter, we present research that provides an insight into the morpho-physiological adaptation and its underlying molecular changes in common bean plants exposed to drought. We include our contribution to establishing the basis for breeding of common bean with greater tolerance to this abiotic stress that uses molecular markers and identification of quantitative trait loci (QTLs).
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