Analysis of Intraspecies Diversity of Rice Reveals Variation Patterns of Oryza sativa Basic Leucine Zippers

文献类型： 外文期刊

第一作者： Wang, Jing

作者： Wang, Jing;Xiao, Wenqing;Wang, Qingnan;Wang, Xu;Jiang, Bin;Sun, Yang;Han, Yangchun

作者机构：

关键词： Rice; OsbZIP; pan-genome; structure variation; atypical gene; bacterial blight

期刊名称：PHYTON-INTERNATIONAL JOURNAL OF EXPERIMENTAL BOTANY （ 影响因子：1.3； 五年影响因子：1.2 ）

ISSN： 0031-9457

年卷期： 2024 年 93 卷 5 期

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收录情况： SCI

摘要： The basic leucine zipper (bZIP) is an important class of transcription factors in plants, playing a critical role in plant growth and development and responses to biotic and abiotic stress. Due to gene presence/absence variations, it is limited to identify bZIP genes based on the reference genome. Therefore, we performed the bZIP gene family analysis in the rice pan-genome. By employing a rice pan-genome, ninety-four OsbZIPs (72 core genes and 22 variable genes) were identi fi ed and divided into 11 groups in a phylogenetic tree. Based upon Ka/Ks values in 33 accessions, OsbZIPs were subjected to different selection pressures during domestication. The analysis of the effects of structural variations (SVs) on gene expression, gene structure, and conserved domains showed that SVs could signi fi cantly alter the expression levels of certain OsbZIPs , leading to gene truncation and the emergence of numerous atypical genes. Thirty-four differentially expressed OsbZIPs were identi fi ed by analyzing RNA-seq data of the Xanthomonas oryzae pv. oryzae ( Xoo ) infection susceptible (IR24) and resistant (IRBB67) lines under high temperature, and by counting the number of differentially expressed OsbZIP s in different subgroups. These OsbZIPs were found to respond to Xoo infection at an early stage and may not be involved in the mechanism of Xa4 and Xa7 resistance to Xoo . The multiple variation patterns of OsbZIP genes provide new insights into the OsbZIP genes in rice. These results provide new resources and offer new directions for functional studies of OsbZIPs .

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