State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, and Chinese Academy of Sciences, Yangling, Shaanxi, China.
School of Molecular Sciences, The University of Western Australia, LB 5005, Perth, Western Australia, 6001, Australia.
Physiol Plant. 2021 Jun;172(2):405-418. doi: 10.1111/ppl.13201. Epub 2020 Sep 16.
Drought stress is the main limiting factor for global soybean growth and production. Genetic improvement for water and nutrient uptake efficiency is critical to advance tolerance and enable more sustainable and resilient production, underpinning yield growth. The identification of quantitative traits and genes related to water and nutrient uptake will enhance our understanding of the mechanisms of drought tolerance in soybean. This review summarizes drought stress in the context of the physiological traits that enable effective acclimation, with a particular focus on roots. Genes controlling root system architecture play an important role in water and nutrient availability, and therefore important targets for breeding strategies to improve drought tolerance. This review highlights the candidate genes that have been identified as regulators of important root traits and responses to water stress. Progress in our understanding of the function of particular genes, including GmACX1, GmMS and GmPEPCK are discussed in the context of developing a system-based platform for genetic improvement of drought tolerance in soybean.
干旱胁迫是全球大豆生长和生产的主要限制因素。提高水分和养分吸收效率的遗传改良对于提高大豆的耐受性和实现更可持续和有弹性的生产至关重要，从而支撑产量增长。鉴定与水分和养分吸收相关的数量性状和基因将有助于我们理解大豆耐旱性的机制。本综述总结了干旱胁迫在使大豆有效适应方面的生理特性，特别关注了根。控制根系结构的基因在水分和养分供应中起着重要作用，因此是培育策略的重要目标，以提高大豆的耐旱性。本综述强调了已被确定为调节重要根系性状和对水分胁迫响应的候选基因。讨论了包括 GmACX1、GmMS 和 GmPEPCK 在内的特定基因功能的研究进展，以期在大豆耐旱性的遗传改良方面建立一个基于系统的平台。
