Exploring Candidate Genes and Regulatory Mechanisms for Salt?Alkali Tolerance in Cucumber

Resumen

Soil salinization is one of the main problems faced by modern agricultural production, especially cucumber production. This study screened the salt?alkali-tolerant cultivar ?D1909? and the salt?alkali-sensitive cultivar ?D1604? from 32 different cucumber ecological types on the basis of morphological indicators and salt?alkali indices combined with relevant physiological and biochemical indices. By performing a transcriptome metabolome analysis, the key gene CsSRG1, which is responsive to salt?alkali stress in cucumber, was screened, and its function was verified. The role of CsSRG1 in reducing salt?alkali stress in cucumber was clarified, and the mechanism of salt?alkali tolerance in cucumber was preliminarily explored. This study provides germplasm resources for cucumber salt?alkali tolerance breeding and a theoretical basis for the effective use of saline alkali soil to achieve high quality and high yield in other crops.