寒旱农业科学2026，Vol.5Issue(9)：804-812,9.DOI:10.3969/j.issn.2097-2172.2026.09.003
玉米GGCT基因家族鉴定及干旱胁迫下的表达模式分析
Identification of the Maize GGCT Gene Family and Analysis of Its Expression Patterns under Drought Stress
摘要
Abstract
To elucidate the biological characteristics of the maize γ-glutamyl cyclotransferase(GGCT)family and the patterns of its expression regulation under drought stress,this study utilised bioinformatics methods to systematically analyse the GGCT family genes.After genome-wide identification and screening of the family members,their physicochemical properties,evolutionary relation-ships,gene structures,and conserved cis-regulatory elements were comprehensively analyzed.Concurrently,transcriptomic data were integrated to elucidate the expression patterns of this family across different maize tissues and under drought stress.Results indicated that 10 GGCT genes were identified in the maize genome,designated ZmGGCT1 to ZmGGCT10,all of which encoded proteins con-tained the typical conserved GGCT domain and were classified into 3 subfamilies.Splicing repeats and tandem repeats were the prima-ry drivers of this family's expansion,and the promoter regions of most ZmGGCT genes contain plant hormone and stress response ele-ments.Tissue-specific expression analysis revealed distinct specificity,with most members showing relatively high expression in roots,leaves,and endosperm.Under drought stress,ZmGGCT8 and ZmGGCT10 were significantly up-regulated,suggesting they are func-tional candidate genes in maize's drought response.This study provides the first systematic elucidation of the evolutionary characteris-tics and drought-stress expression patterns of the maize GGCT family,offering important genetic resources and theoretical support for subsequent functional validation of ZmGGCT genes and molecular breeding for drought tolerance in maize.关键词
玉米/γ-谷氨酰环转移酶/生物信息学分析/干旱胁迫/表达模式Key words
Maize/γ-glutamylcyclotransferase/Bioinformatics analysis/Drought stress/Expression pattern分类
农业科技引用本文复制引用
成春华,李星,蔡子文..玉米GGCT基因家族鉴定及干旱胁迫下的表达模式分析[J].寒旱农业科学,2026,5(9):804-812,9.基金项目
甘肃省现代农业科技支撑体系区域创新中心重点科技项目(2025GAAS05-2). （2025GAAS05-2）
