期刊
PLANT PHYSIOLOGY AND BIOCHEMISTRY
卷 166, 期 -, 页码 668-676出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.plaphy.2021.06.038
关键词
Gene expression; Phosphate transporters; Selenite fertilization; Tea plant
资金
- National Natural Science Foundation of China [31470692, U19A2030]
- Innovation Center Fund for Agricultural Science and Technology in Hubei Province of China [2019-620-000-001-024]
- Fund of Hubei Academy of Agricultural Science [2018NKYJJ12]
Selenium is essential for human health and a vital nutrient for plant growth, with selenite being the main form available to plants in acidic soils. The CsPHT gene family in tea plants plays key roles in selenite uptake and homeostasis, with different expression patterns in various tissues and under different selenium levels. The results provide insights into the contribution of CsPHT genes to selenium supply in tea plants and lay a foundation for further studies on their potential functions.
Selenium (Se) is an essential element for human health and an important nutrient for plant growth. Selenite is the main form of Se available to plants in acidic soils. Previous studies have shown that phosphate transporters (PTHs) participate in selenite uptake in plants. Research on the PHT gene family is therefore vital for production of Se-rich products. Here, 23 CsPHT genes were identified in the tea (Camellia sinensis) genome and renamed based on homology with AtPHT genes in Arabidopsis thaliana. The CsPHT genes were divided into four subfamilies: PHT1, PHT3, PHT4, and PHO, containing nine, three, six, and five genes, respectively. Phylogenetic analysis indicated that fewer duplication events occurred in tea plants than in A. thaliana, rice, apple, and poplar. Genes in the same subfamily tended to share similar gene structures, conserved motifs, and potential functions. CsPHT genes were differentially expressed in various tissues and in roots under different Se levels, suggesting key roles in selenite uptake, translocation, and homeostasis. The results illuminate the contributions of CsPHT genes to selenite supply in tea plants, and lay a foundation for follow-up studies on their potential functions in this plant species.
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