大豆抗旱遗传网络的挖掘与重要基因的克隆和功能鉴定

Drought stress is one of the most important factors to limit the increase of the crop production. With the development of the global economic and greenhouse effect, the impact of the drought stress on crops will be deteriorated. Thus, study of the mechanism of the drought tolerance and improve the water usage efficiency in corps become the hot issue in the modern agriculture research. Soybean is among the most important economic crops in China, with the high sensitivity to water condition in environment. Every year, there is over 70% of the soybean planting area affected by the water deficit, which resulted in the extremely decrease of the soybean production. However, the molecular mechanism of the drought tolerance in soybean remains unclear. Based on a elaborate drought test and genomics study with 600 soybean germplasm resources, this project plan to find the major genes in the drought signaling pathway, using the molecular and biochemical tools, the function of major genes will be identified. This study will uncover the genetic regulatory network of the drought tolerance in soybean and make a great significance on the increase of the soybean yield and sustainable development of agriculture in China.

干旱胁迫长期以来都是制约农作物产量提高的重要因素，伴随着全球经济的发展以及温室效应的加重，干旱胁迫对农作物的危害还将进一步加剧。因此，研究作物抗旱的机制，提高农作物的水分利用效率已经成为当今农业发展中的一大热点问题。大豆是我国重要的经济粮食作物，它对环境水分极为敏感，我国每年有70%以上的大豆种植区域都会受到干旱胁迫的危害，严重影响了我国大豆的总产量。然而，目前大豆抗旱胁迫的分子机理还不是很清楚。在本研究中，我们将整合600份种质资源的抗旱表型分析结果以及重测序分析数据，利用全基因组关联分析以及图位克隆的方法挖掘大豆中与干旱胁迫相关的主效基因，并通过一系列分子生物学和生物化学的方法验证这些基因的功能，进一步解析大豆抗旱的分子机制。本研究对于提高大豆产量，维持我国农业的可持续发展具有非常重要的意义。