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A Study on the Functional Identification of Overexpressing Winter Wheat Expansin Gene TaEXPA7-B in Rice under Salt Stress.
- Source :
-
International journal of molecular sciences [Int J Mol Sci] 2024 Jul 14; Vol. 25 (14). Date of Electronic Publication: 2024 Jul 14. - Publication Year :
- 2024
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Abstract
- Expansin is a cell wall relaxant protein that is common in plants and directly or indirectly participates in the whole process of plant root growth, development and morphogenesis. A well-developed root system helps plants to better absorb water and nutrients from the soil while effectively assisting them in resisting osmotic stress, such as salt stress. In this study, we observed and quantified the morphology of the roots of Arabidopsis overexpressing the TaEXPAs gene obtained by the research group in the early stage of development. We combined the bioinformatics analysis results relating to EXPA genes in five plants and identified TaEXPA7-B , a member of the EXPA family closely related to root development in winter wheat. Subcellular localization analysis of the TaEXPA7-B protein showed that it is located in the plant cell wall. In this study, the TaEXPA7-B gene was overexpressed in rice. The results showed that plant height, root length and the number of lateral roots of rice overexpressing the TaEXPA7-B gene were significantly higher than those of the wild type, and the expression of the TaEXPA7-B gene significantly promoted the growth of lateral root primordium and cortical cells. The plants were treated with 250 mM NaCl solution to simulate salt stress. The results showed that the accumulation of osmotic regulators, cell wall-related substances and the antioxidant enzyme activities of the overexpressed plants were higher than those of the wild type, and they had better salt tolerance. This paper discusses the effects of winter wheat expansins in plant root development and salt stress tolerance and provides a theoretical basis and relevant reference for screening high-quality expansin regulating root development and salt stress resistance in winter wheat and its application in crop molecular breeding.
- Subjects :
- Osmotic Pressure
Plant Roots genetics
Plant Roots growth & development
Plant Roots metabolism
Plants, Genetically Modified genetics
Salt Tolerance genetics
Gene Expression Regulation, Plant drug effects
Oryza genetics
Oryza growth & development
Oryza metabolism
Oryza drug effects
Oryza physiology
Plant Proteins genetics
Plant Proteins metabolism
Salt Stress genetics
Triticum genetics
Triticum growth & development
Triticum metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 1422-0067
- Volume :
- 25
- Issue :
- 14
- Database :
- MEDLINE
- Journal :
- International journal of molecular sciences
- Publication Type :
- Academic Journal
- Accession number :
- 39062950
- Full Text :
- https://doi.org/10.3390/ijms25147707