Genetic loci associated with response to abiotic stress

Compositions and methods useful in identifying and counter-selecting maize plants with having enhanced yield-related traits relative to control plants under abiotic stress conditions such as salt stress and/or drought are provided herein. The methods use molecular genetic markers to identify， select and/or construct salt stress tolerant and/or drought tolerant maize plants. Also provided are methods to enhance tolerance to salt stress and/or drought in crop plants by transforming crop plants with the Zea mays antiporter/sodium ion transporter or by introducing favorable allelic variants of the Zea mays antiporter/sodium ion transporter gene via gene editing.

本文提供了可用于在盐胁迫、干旱等非生物胁迫条件下，鉴定并筛选相较于对照植株具备更优产量相关性状的玉米植株的组合物与方法。该方法借助分子遗传标记来鉴定、筛选及/或培育耐盐胁迫与/或耐旱的玉米植株。本文还提供了通过将玉米反向转运蛋白/钠离子转运蛋白（Zea mays antiporter/sodium ion transporter）转化至作物植株，或通过基因编辑技术引入该基因的有利等位变异，以提升作物对盐胁迫及/或干旱胁迫耐受性的方法。