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Overexpression of OsPHT1;4 Increases Phosphorus Utilization Efficiency and Improves the Agronomic Traits of Rice cv. Wuyunjing 7

文献类型： 外文期刊

作者： Hu, Zhi 1 ; Huang, Xu 1 ; Wang, Xiaowen 2 ; Xia, Huihuang 1 ; Liu, Xiuli 3 ; Sun, Yafei 4 ; Sun, Shubin 1 ; Hu, Yibing 1 ; Cao, Yue 5 ;

作者机构： 1.Nanjing Agr Univ, Coll Resources & Environm Sci, Nanjing 210095, Peoples R China

2.Nanjing Agr Univ, Coll Hort, Nanjing 210095, Peoples R China

3.Zhejiang Acad Agr Sci, Inst Virol & Biotechnol, Hangzhou 310004, Peoples R China

4.Shanghai Acad Agr Sci, Inst Ecoenvironm & Plant Protect, Shanghai 201803, Peoples R China

5.Sun Yat Sen Univ, Sch Environm Sci & Engn, Guangdong Prov Key Lab Environm Pollut Control &, Guangzhou 510006, Peoples R China

关键词： phosphate transporter; phosphurs nutrition; P uptake and transloation; grain yield; rice cultivar

期刊名称：AGRONOMY-BASEL （ 影响因子：3.949； 五年影响因子：4.117 ）

ISSN：

年卷期： 2022 年 12 卷 6 期

页码：

收录情况： SCI

摘要： Inorganic phosphate (Pi) is taken up by plant roots and translocated via phosphate transporters. Previously, we showed that phosphate transporter OsPHT1;4 in the PHT1 family participates in phosphate acquisition and mobilization; it facilitates the embryo development of Japonica rice Nipponbare. This study investigated the potential of manipulating the expression of OsPHT1;4 to increase Pi acquisition efficiency and crop productivity in rice cv. Wuyunjing 7 (WYJ 7), a cultivar widely grown in Yangtze River Delta of China. The OsPHT1;4 overexpression lines and wild-type WYJ 7 were treated under different Pi conditions in hydroponic and field experiments. Quantitative real-time RT-PCR analysis and the transgenic plants expressing GUS reporter gene indicate strong expression of OsPHT1;4 in roots and leaf collars of cv. WYJ 7. The total P contents in shoots of the OsPHT1;4-overexpressing plants were significantly higher under Pi-deficient hydroponic conditions than the wild type under Pi sufficiency and deficiency. (33)Pi uptake and translocation assays confirmed the results. In the field condition, OsPHT1;4 overexpression lines had a higher P concentration in tissues than the wild type control, and the panicle performance of the overexpression lines including the grain yield was improved as well. Taken together, our results show that OsPHT1;4 plays an important role in the acquisition and mobilization of Pi in WYJ 7, especially under Pi deficiency. The study highlights the importance of OsPHT1;4 in improving the agronomic traits of the widely grown rice cultivar in China.

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