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Autotetraploidization Gives Rise to Differential Gene Expression in Response to Saline Stress in Rice

文献类型： 外文期刊

作者： Wang, Ningning 1 ; Wang, Shiyan 1 ; Qi, Fan 1 ; Wang, Yingkai 1 ; Lin, Yujie 1 ; Zhou, Yiming 1 ; Meng, Weilong 1 ; Zhang, Chunying 1 ; Wang, Yunpeng 2 ; Ma, Jian 1 ;

作者机构： 1.Jilin Agr Univ, Fac Agron, Changchun 130117, Peoples R China

2.Jilin Acad Agr Sci, Inst Agr Biotechnol, Changchun 130033, Peoples R China

关键词： diploid; autotetraploid; saline stress; phytohormones; gene expression

期刊名称：PLANTS-BASEL （ 影响因子：4.658； 五年影响因子：4.827 ）

ISSN：

年卷期： 2022 年 11 卷 22 期

页码：

收录情况： SCI

摘要： Plant polyploidization represents an effective means for plants to perpetuate their adaptive advantage in the face of environmental variation. Numerous studies have identified differential responsiveness to environmental cues between polyploids and their related diploids, and polyploids might better adapt to changing environments. However, the mechanism that underlies polyploidization contribution during abiotic stress remains hitherto obscure and needs more comprehensive assessment. In this study, we profile morphological and physiological characteristics, and genome-wide gene expression between an autotetraploid rice and its diploid donor plant following saline stress. The results show that the autotetraploid rice is more tolerant to saline stress than its diploid precursor. The physiological characteristics were rapidly responsive to saline stress in the first 24 h, during which the elevations in sodium ion, superoxide dismutase, peroxidase, and 1-aminocyclopropane-1-carboxylic acid were all significantly higher in the autotetraploid than in the diploid rice. Meanwhile, the genome-wide gene expression analysis revealed that the genes related to ionic transport, peroxidase activity, and phytohormone metabolism were differentially expressed in a significant manner between the autotetraploid and the diploid rice in response to saline stress. These findings support the hypothesis that diverse mechanisms exist between the autotetraploid rice and its diploid donor plant in response to saline stress, providing vital information for improving our understanding on the enhanced performance of polyploid plants in response to salt stress.

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