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. This article is protected by copyright. All rights reserved.

中文翻译：

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大豆 (Glycine max L.) 响应缺水的根系结构、生理和转录特性：综述


干旱胁迫是全球大豆生长和生产的主要限制因素。水和养分吸收效率的遗传改良对于提高耐受性、实现更可持续和更有弹性的生产、支撑产量增长至关重要。与水分和养分吸收相关的数量性状和基因的鉴定将增强我们对大豆耐旱机制的理解。这篇综述总结了能够有效适应的生理特征背景下的干旱胁迫，特别关注根部。控制根系结构的基因在水和养分可用性方面发挥着重要作用，因此也是提高耐旱性育种策略的重要目标。本综述重点介绍了已被确定为重要根性状和水分胁迫反应调节因子的候选基因。我们在开发用于大豆耐旱性遗传改良的基于系统的平台的背景下讨论了我们对特定基因（包括 GmACX1、GmMS 和 GmPEPCK）功能的理解进展。本文受版权保护。版权所有。