Comparative Transcriptome Analysis of the Heterosis of Salt Tolerance in Inter-Subspecific Hybrid Rice
文献类型： 外文期刊
作者： Huang, Zhibo 1 ; Ye, Jing 1 ; Zhai, Rongrong 1 ; Wu, Mingming 1 ; Yu, Faming 1 ; Zhu, Guofu 1 ; Wang, Zhoufei 2 ; Zhang, Xiaoming 1 ; Ye, Shenghai 1 ;
作者机构： 1.Zhejiang Acad Agr Sci, Inst Crop & Nucl Technol Utilizat, Hangzhou 310021, Peoples R China
2.South China Agr Univ, Coll Agr, Lab Seed Sci & Technol, Guangdong Key Lab Plant Mol Breeding, Guangzhou 510642, Peoples R China
关键词： Oryza sativa; inter-subspecific hybrid; salt tolerance; heterosis
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.6； 五年影响因子：6.2 ）
ISSN：
年卷期： 2023 年 24 卷 3 期
页码：
收录情况： SCI
摘要： Soil salinity is one of the major abiotic stresses limiting rice growth. Hybrids outperform their parents in salt tolerance in rice, while its mechanism is not completely understood. In this study, a higher seedling survival was observed after salt treatment in an inter-subspecific hybrid rice, Zhegengyou1578 (ZGY1578), compared with its maternal japonica Zhegeng7A (ZG7A) and paternal indica Zhehui1578 (ZH1578). A total of 2584 and 3061 differentially expressed genes (DEGs) with at least twofold changes were identified between ZGY1578 and ZG7A and between ZGY1578 and ZH1578, respectively, in roots under salt stress using the RNA sequencing (RNA-Seq) approach. The expressions of a larger number of DEGs in hybrid were lower or higher than those of both parents. The DEGs associated with transcription factors, hormones, and reactive oxygen species (ROS)-related genes might be involved in the heterosis of salt tolerance. The expressions of the majority of transcription factors and ethylene-, auxin-, and gibberellin-related genes, as well as peroxidase genes, were significantly higher in the hybrid ZGY1578 compared with those of both parents. The identified genes provide valuable clues to elucidate the heterosis of salt tolerance in inter-subspecific hybrid rice.
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