草业学报2026，Vol.35Issue(8)：144-156,13.DOI:10.11686/cyxb2025345
燕麦蔗糖转运蛋白基因家族的鉴定及其对干旱和盐碱胁迫的响应
Identification of the sucrose transporter gene family in oats and its response to drought and saline-alkali conditions
摘要
Abstract
Sucrose transporters(SUT)are critical transmembrane carriers in higher plants,responsible for the long-distance transport of sucrose from source to sink organs,and sucrose loading and unloading.They play vital roles in plant growth,development,and stress resistance.In this study,we employed bioinformatics methods to identify 9 patterns under various abiotic stresses.It was found that the encoded AsSUTs proteins ranged in length from 490 to 687 amino acids,with predicted molecular weights(Mw)of 52.51-73.45 kDa and theoretical isoelectric points(pI)of 6.13-9.72.The genes are distributed across eight chromosomes,with promoter elements primarily involved in hormone response,growth and development,and abiotic stress response.The gene and protein structures of AsSUT members exhibit high conservation.Expression pattern analysis revealed that expression levels of AsSUTs family members under drought and alkaline stress were generally higher than under salt stress.Under drought stress,except for AsSUT6,all other AsSUTs family members showed significantly higher expression in stressed leaves compared to normal leaves.Under salt stress,AsSUT1,AsSUT4,and AsSUT6 exhibited significantly higher expression in stressed leaves than in normal leaves,while under alkaline stress,all AsSUTs members except AsSUT7 showed significantly elevated expression in stressed leaves.Notably,AsSUT1 demonstrated stronger responsiveness to various abiotic stress environments,suggesting its potential critical role in oat stress resistance.These findings provide a theoretical foundation for further research on the SUT family members in oats and their response to environmental stresses.关键词
燕麦/蔗糖转运蛋白/生物信息学/逆境胁迫/基因表达Key words
Avena sativa/sucrose transporter/bioinformatics/adversity stress/gene expression引用本文复制引用
刘进娣,陈仕勇,李进,蒋涛,梁国玲,周青平..燕麦蔗糖转运蛋白基因家族的鉴定及其对干旱和盐碱胁迫的响应[J].草业学报,2026,35(8):144-156,13.基金项目
四川省区域创新合作项目(2025YFHZ0282),四川省重点研发项目(2021YFYZ0013)和云南种子种业联合实验室元谋研发中心共享平台建设实验室项目(202405AR340001)资助. （2025YFHZ0282）
