数字农科院2.0

Analysis of Sulfate Transporter Gene Family 3 in Rice

文献类型： 外文期刊

作者： Ruili Li;Zhuang Xu;Wanxia Wang;Huang Wang;Hongyu Zhao;Lei Xu;Keke Yi

作者机构：

关键词： endoplasmic reticulum; sulphate transporter; phosphate transport; phosphate starvation

期刊名称： Rice Science

ISSN： 1672-6308

年卷期： 2025 年 32 卷 4 期

页码：

收录情况： SCIE（2025版） ; ; CSCD（2025-2026年度） ; ; 科技核心（2024版） ; ; 农林核心（2024版）

摘要： Sulfate transporters (SULTRs) facilitate sulfate uptake and transport in plants. In plants, SULTRs can be classified into four distinct functional groups, among which SULTR3 members are the least characterized, and their functions have not yet been confirmed, especially for SULTR3 in rice. In this study, we analyzed the expression patterns, subcellular localization, and inorganic phosphate (Pi) transporter activity of SULTR3 proteins in yeast. Except for OsSULTR3.4, which localized to the plasma membrane, other OsSULTR3 members were localized to the endoplasmic reticulum (ER) membrane in rice protoplast cells. We performed a detailed functional analysis of OsSULTR3.2, which was upregulated under Pi-deficient conditions in rice. Expression of OsSULTR3.2 in a Pi transport-defective yeast mutant Saccharomyces cerevisiae restored its growth, suggesting that OsSULTR3.2 possessed Pi transport activity. Furthermore, knockout of OsSULTR3.2 inhibited plant growth and altered Pi accumulation in shoots. However, sulfur concentration remained unchanged in the ossultr3.2 mutant. Further analysis suggested that OsSULTR3.2 may be involved in Pi unloading from the xylem at rice nodes. Taken together, our results indicated that OsSULTR3.2 participated in Pi distribution in rice.

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