浙江农业学报 ›› 2022, Vol. 34 ›› Issue (11): 2329-2339.DOI: 10.3969/j.issn.1004-1524.2022.11.02

• 作物科学 • 上一篇    下一篇

水稻质体磷酸盐转运体OsPPT家族成员的功能分析

王继纯1(), 李瑞莉2, 王姣玲3, 邵俊雯1, 赵红玉2,*()   

  1. 1.浙江师范大学 化学与生命科学学院,浙江 金华 321004
    2.中国农业科学院 农业资源与农业区划研究所,北京 100098
    3.南阳师范学院 生命科学与农业工程学院,河南 南阳473061
  • 收稿日期:2022-04-20 出版日期:2022-11-25 发布日期:2022-11-29
  • 通讯作者: 赵红玉
  • 作者简介:*赵红玉,E-mail:zhy200869@163.com
    王继纯(1997—),女,湖南郴州人,硕士研究生,研究方向为植物营养。E-mail:wangjichun930@163.com
  • 基金资助:
    国家自然科学基金青年科学基金(31801924)

Functional analysis of plastid phosphate transporter OsPPT family members in rice

WANG Jichun1(), LI Ruili2, WANG Jiaoling3, SHAO Junwen1, ZHAO Hongyu2,*()   

  1. 1. College of Chemistry and Life Sciences, Zhejiang Normal University, Jinhua 321004, Zhejiang, China
    2. Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100098, China
    3. College of Life Science and Agricultural Engineering, Nanyang Normal University, Nanyang 473061, Henan, China
  • Received:2022-04-20 Online:2022-11-25 Published:2022-11-29
  • Contact: ZHAO Hongyu

摘要:

磷酸烯醇式丙酮酸/磷酸盐转运体(PPT)是植物质体磷酸盐转运蛋白家族(pPTs)成员之一,介导细胞质中的磷酸烯醇式丙酮酸(PEP)进入质体基质的同时,将磷交换到细胞质中。为对水稻OsPPT基因家族进行综合分析,探索其在水稻中的潜在功能。利用水稻原生质体瞬时转化分析OsPPT的亚细胞定位,通过酵母异源表达实验分析OsPPT的磷酸盐转运能力。设置正常供磷和缺磷等非生物胁迫水培实验处理,阐明OsPPT家族成员的组织特异性表达模式,以及对非生物胁迫逆境的响应。结果表明,OsPPT基因家族4个成员均定位于叶绿体膜,而且OsPPT可以在酵母中介导磷酸盐的跨膜转运。此外,通过实时荧光定量PCR(qRT-PCR)展示了OsPPT基因家族在应对环境胁迫时表达模式上的动态变化,比如磷饥饿,以及脱落酸(abscisic acid,ABA)、水杨酸(salicylic acid,SA)、氯化钠等非生物胁迫环境。OsPPT基因家族可能参与磷酸盐在细胞质和叶绿体之间的运输,同时也可能参与植物对逆境胁迫的响应。

关键词: 质体, 磷酸盐, 磷转运蛋白, 磷酸烯醇式丙酮酸/磷酸盐转运体

Abstract:

The phosphoenolpyruvate/phosphate transporter (PPT) is a member of plant plastid phosphate transporter family (pPTs), which transports phosphoenolpyruvate (PEP) in cytoplasm into the plastid and exchanges phosphate to cytoplasm. To comprehensively analyze the OsPPT gene family and explore its potential function in rice, subcellular localization of OsPPT proteins were clarified by transient transformation of rice protoplasts, and the phosphate transport capacity of OsPPT were analyzed by yeast heterologous expression experiments. The tissue specific expression patterns of OsPPT gene family and their responses to abiotic stress were analyzed by setting up hydroponic experimental treatments such as normal phosphorus supply, phosphorus deficiency and abiotic stress. The results showed that all four members of the OsPPT gene family were localized to the chloroplast membrane and OsPPTs could mediate phosphate transport across the membrane in yeast. In addition, dynamic transcriptional changes determined by qRT-PCR revealed differential expression profiles of OsPPTs in response to environmental stress, such as phosphorus starvation and abscisic acid (ABA), salicylic acid (SA), NaCl stress The OsPPT gene family might be involved in the transportation of phosphate between cytoplasm and chloroplasts, and might also participate in the response of plants to stress.

Key words: plastids, phosphate, phosphorus transporter protein, phosphoenolpyruvate/phosphate transporter (PPT)

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