江苏农业学报2025，Vol.41Issue(3)：417-431,15.DOI:10.3969/j.issn.1000-4440.2025.03.001
水稻GT家族成员鉴定及响应非生物胁迫的表达分析
Identification of GT family members in rice and expression analysis in re-sponse to abiotic stresses
摘要
Abstract
The GT family is an important class of transcription factors in plants,playing a crucial role in plant growth,development,and stress responses.In this study,bioinformatics and transcriptomics were combined to analyze the protein physicochemical properties,evolu-tionary relationships,and abiotic stress response patterns of the family members.The results showed that there were 52 GT genes in the rice genome,which were distributed on 12 chromosomes.Based on phylogenetic analysis,the GT protein family could be divided into three subfamilies.The relative expression levels of most GT genes were low in vegetative organs such as rice leaves,leaf sheaths,roots,and stems.In contrast,relatively high expression levels were observed in reproductive organs such as inflorescences,embryos,and endosperms.Compared with brassinosteroid(BR),cytokinin(CTK),and gibberellin(GA),GT genes responded more significantly to abscisic acid(ABA),jasmonic acid(JA),and auxin(IAA),indicating that GT family members may be involved in the plant stress response processes mediated by ABA,JA,and IAA.Under photoperiod conditions,the relative expression levels of OsGT2,OsGT18,OsGT17,OsGT25,and Os-GT10 decreased during the day and increased at night,while those of OsGT15,OsGT34,and OsGT16 increased during the day and decreased at night.The expression of these genes may be regulated by light signals.Under salt stress,the relative expression level of OsGT2 increased in the salt-tolerant varieties Yandao 3931 and Guangxiang 24S,but decreased in the salt-sensitive varieties 19H216 and Jing 4155S.Under waterlogging stress,the relative expression levels of OsGT51 and Os-GT48 decreased in the roots of the waterlogging-tolerant variety LS273,while the relative expression levels in the roots of the waterlogging-sensitive variety ZZ39 were not significantly different from the control.This indicated that OsGT51 and Os-GT48 may be involved in the response of rice to waterlogging stress.With the prolongation of high-temperature stress,drought stress,and heavy metal cadmium stress,the relative expression levels of most GT genes in Zhonghua 11 decreased,while only a few GT genes showed an increase.The results of this study provide an important basis for in-depth analysis of the molecular mechanisms of the GT transcription factor family in rice growth,development,and stress responses.关键词
水稻/GT家族/生物信息学/基因表达/非生物胁迫Key words
rice/GT family/bioinformatics/gene expression/abiotic stress分类
农业科技引用本文复制引用
费思恬,侯鹰翔,宋松泉,罗勇,张超..水稻GT家族成员鉴定及响应非生物胁迫的表达分析[J].江苏农业学报,2025,41(3):417-431,15.基金项目
湖南省教育厅科学研究项目(22C0548) （22C0548）
郴州国家可持续发展议程创新示范区建设省级专项(2022sfq06) （2022sfq06）
湖南省科技创新计划资助项目(2023RC3190) （2023RC3190）
湘南学院校级科研项目青年项目(2023XJ33) （2023XJ33）
