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Comparative multi-omics analysis of hypoxic germination tolerance in weedy rice embryos and coleoptiles

文献类型： 外文期刊

作者： Zhang, Guangchen 1 ; Liu, Youhong 2 ; Gui, Rui 1 ; Wang, Ziming 3 ; Li, Zhuan 1 ; Han, Yuqing 1 ; Guo, Xiaojia 4 ; Sun, J 1 ;

作者机构： 1.Shenyang Agr Univ, Rice Res Inst, Shenyang 110161, Peoples R China

2.Heilongjiang Acad Agr Sci, Inst Crop Cultivat & Tillage, Heilongjiang Prov Key Lab Crop Mol Design & Germp, Haerbin 150086, Peoples R China

3.Shenyang Agr Univ, Coll Forestry, Shenyang 110161, Peoples R China

4.Jinzhou Inst Sci & Technol, Jinzhou 121000, Peoples R China

关键词： Hypoxic germination; Weedy rice; Metabolomics; Transcriptomics; Proteomics

期刊名称：GENOMICS （ 影响因子：5.736； 五年影响因子：4.939 ）

ISSN： 0888-7543

年卷期： 2021 年 113 卷 5 期

页码：

收录情况： SCI

摘要： Hypoxic germination tolerance is an important trait for seedling establishment of direct-seeded rice. Our comparative metabolomics analysis revealed that weedy rice accumulated more sugar and amino acids than cultivated rice accumulated in the embryo and coleoptile tissues under hypoxic stress. At the transcriptional level, oxidative phosphorylation activity in weedy rice was higher than in cultivated rice that likely led to more efficient energy metabolism during hypoxic stress. Based on our comparative proteomics analysis, enriched proteins related to cell wall implied that the advantages in energy metabolism of weedy rice were ultimately reflected in the formation of tissue structures. In this study, we found that most of key hypoxic germination tolerance (HGT) genes shared the same genetic backgrounds with Oryza japonica, however, several of them genetically similar to other Oryza plant also play important roles. Our findings suggest weedy rice can serve as genetic resources for the improvement of direct-seeding rice.

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