农业生物技术学报2025，Vol.33Issue(2)：248-260,13.DOI:10.3969/j.issn.1674-7968.2025.02.002
玉米PRX基因家族的鉴定与表达分析
Identification and Expression Analyses of PRX Genes Family in Maize(Zea mays)
摘要
Abstract
Class Ⅲ peroxidases(PRXs)are a family of genes unique to higher plants that are widely involved in catalyzing hydrogen peroxide,phenolic compounds and reactive oxygen species.To date,the study of the PRX gene family at the genome-wide level in Zea mays has not been reported.This study utilized bioinformatic methods to conduct a comprehensive analysis of the PRX gene family at the whole-genome level in maize,and examining their expression patterns in different tissues and under various stress conditions.The results indicated that a total of 90 ZmPRX genes were identified,unevenly distributed across the 10 chromosomes of maize.Specifically,12 of these genes were found to be involved in 6 segmental duplication events,while 15 genes participated in 6 tandem duplication events.Phylogenetic analysis classified them into 8 branches,with genes in the same branch having similar gene structures and conserved motifs.Cis-element analysis revealed that there were 5 categories of elements distributed in the promoter region of ZmPRX genes,including hormonal responsiveness,stress responsiveness,growth and development,light responsiveness,and universal elements.The expression pattern analysis revealed that the expression of ZmPRX genes exhibited tissue-specific characteristics and were significantly induced under different abiotic stress conditions.Furthermore,under drought stress conditions,the expression level of the ZmPRX gene in the drought-tolerant inbred line 54358 significantly increases,suggesting that this variety possesses strong capabilities in resisting drought stress.This study provides a theoretical basis for further investigating the functional characteristics of PRX genes in maize.关键词
玉米/PRX基因家族/表达模式/非生物胁迫Key words
Maize/PRX gene family/Expression pattern/Abiotic stress分类
农业科技引用本文复制引用
郝立冬,徐磊,闫治斌,李世风,石运强..玉米PRX基因家族的鉴定与表达分析[J].农业生物技术学报,2025,33(2):248-260,13.基金项目
甘肃省科技计划项目在站博士后专项(23JRRF0004) （23JRRF0004）
甘肃省科技重大专项(21ZD10NF003) （21ZD10NF003）
黑龙江省省属科研院所科研业务费(CZKYF2023-1-C018) （CZKYF2023-1-C018）
黑龙江省农业科学院绥化分院科技创新项目(SHFY2022-05) （SHFY2022-05）
黑龙江省农业科学院科技攻关项目(2021YYYF047) （2021YYYF047）
