Identification, characterisation and expression analysis of peanut sugar invertase genes reveal their vital roles in response to abiotic stress

期刊论文
发表日期：

2024年1月10日

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Tingting Mao,
Yaru Zhang,
Wenwen Xue,
Yu Jin,
Hongfei Zhao,
Yibo Wang,
Shengnan Wang,
Shengjie Zhuo,
Feifei Gao,
Yanping Su,
Chunyan Yu,
Xiaotong Guo,
Yuting Sheng,
Juan Zhang,
Hongxia Zhang

摘要

Key message

Sucrose invertase activity is positively related to osmotic and salt stress resistance in peanut.

Abstract

Sucrose invertases (INVs) have important functions in plant growth and response to environmental stresses. However, their biological roles in peanut are still not fully revealed. In this research, we identified 42 AhINV genes in the peanut genome. They were highly conserved and clustered into three groups with 24 segmental duplication events occurred under purifying selection. Transcriptional expression analysis exhibited that they were all ubiquitously expressed, and most of them were up-regulated by osmotic and salt stresses, with AhINV09, AhINV23 and AhINV19 showed the most significant up-regulation. Further physiochemical analysis showed that the resistance of peanut to osmotic and salt stress was positively related to the high sugar content and sucrose invertase activity. Our results provided fundamental information on the structure and evolutionary relationship of INV gene family in peanut and gave theoretical guideline for further functional study of AhINV genes in response to abiotic stress.