草地学报2026，Vol.34Issue(9)：3172-3179,3181-3184,12.DOI:10.11733/j.issn.1007-0435.2026.09.004
象草GRAS基因家族鉴定及表达分析
Identification and Expression Analysis of GRAS Gene Family in Pennisetum purpureum
曹磊 1杨忠富 2冯光燕 1张新全1
作者信息
- 1. 四川农业大学草业科技学院,四川 成都 611130
- 2. 贵州大学动物科学学院,贵州 贵阳 550025
- 折叠
摘要
Abstract
The GRAS family is a class of specific transcriptional regulatory factors widely present in plants,which play vital roles in regulating plant growth and development,as well as responses to biotic and abiotic stress.It is of great significance to explore the characteristics and functions of GRAS gene family in elephant grass(Pennisetum purpureum)and clarify their regulatory roles under low-temperature stress.Based on the genomic data of elephant grass,in this study we identified members of the GRAS gene family,and analyzed their chromosomal localization,physicochemical properties,gene structural characteristics,phylogenetic rela-tionships,as well as the expression patterns of elephant grass materials with different cold resistance under low-temperature stress.The results showed that a total of 18 GRAS genes were identified in the elephant grass genome,which were distributed on 10 chromosomes and classified into five subfamilies via phylogenetic analy-sis.Cis-acting element analysis revealed that the promoter regions of 10 PpGRAS members contained regula-tory elements related to low-temperature response.Collinearity analysis indicated that elephant grass shared more homologous genes with Sorghum bicolor than that with Oryza sativa.Expression pattern analysis demon-strated that the expression levels of multiple GRAS family members,especially genes such as PpGRAS7 and PpGRAS10 belonging to the LISCL subfamily,were significantly positively correlated with cold resistance capacity of materials.This study provides valuable references for further exploring the functions of elephant grass GRAS family and their response mechanisms to Low-temperature stress.关键词
象草/GRAS基因家族/低温胁迫Key words
Pennisetum purpureum/GRAS gene family/low-temperature stress分类
农业科技引用本文复制引用
曹磊,杨忠富,冯光燕,张新全..象草GRAS基因家族鉴定及表达分析[J].草地学报,2026,34(9):3172-3179,3181-3184,12.
