高等植物K+吸收及转运的分子机制研究进展

doi:10.11686/cyxb2019123

草业学报 ›› 2019, Vol. 28 ›› Issue (9): 174-191.DOI: 10.11686/cyxb2019123

高等植物K⁺吸收及转运的分子机制研究进展

段慧荣¹, 周学辉¹, 胡静², 段潇蓉³, 田福平¹, 崔光欣¹, 王春梅¹, 杨红善^1,*

1.中国农业科学院兰州畜牧与兽药研究所, 甘肃兰州 730050;
2.甘肃省治沙研究所, 甘肃省荒漠化与风沙灾害防治重点实验室-省部共建国家重点实验室培育基地, 甘肃兰州 730070;
3.国网山西省电力公司电力科学研究院, 山西太原 030000

收稿日期:2019-02-28 修回日期:2019-05-08 出版日期:2019-09-20 发布日期:2019-09-20
通讯作者: *E-mail: yanghsh123@126.com
作者简介:段慧荣(1987-),女,山西长治人,助理研究员,博士。E-mail: duanhuirong@caas.cn
基金资助:
国家自然科学基金青年基金项目(31700338),中央级公益性科研院所基本科研业务费项目(1610322019012)和中国农业科学院科技创新工程专项资金项目"寒生、旱生灌草新品种选育"(CAAS-ASTIP-2016-LIHPS-08)资助

Advances in understanding molecular mechanisms of K⁺ uptake and transport in higher plants

DUAN Hui-rong¹, ZHOU Xue-hui¹, HU Jing², DUAN Xiao-rong³, TIAN Fu-ping¹, CUI Guang-xin¹, WANG Chun-mei¹, YANG Hong-shan^1,*

1.Lanzhou Institute of Husbandry and Pharmaceutical Science, Lanzhou 730050, China;
2.State Key Laboratory Breeding Base of Desertification and Aeolian Sand Disaster Combating, Gansu Desert Control Research Institute, Lanzhou 730070, China;
3.Shanxi Electric Power Research Institute, State Grid Corporation of China, Taiyuan 030000, China

Received:2019-02-28 Revised:2019-05-08 Online:2019-09-20 Published:2019-09-20
Contact: *E-mail: yanghsh123@126.com

摘要/Abstract

摘要： K⁺是植物生长必需的营养元素。K⁺被植物根系吸收后,有效地向地上部转运,在跨膜转运的过程中主要由次级K⁺转运蛋白和K⁺通道介导。KT/HAK/KUP和HKT家族是参与植物体内K⁺吸收及转运的两类主要K⁺转运蛋白,其中HKT家族参与K⁺转运的成员仅存在于单子叶植物中,它们在植物生长发育、渗透调节等过程中均发挥重要作用。Shaker家族是K⁺通道中最早发现且研究最为深入的一类电压门控型通道,是植物K⁺吸收的重要途径之一。本研究从结构特征、定位和组织表达、功能调控等方面对植物KT/HAK/KUP家族、HKT家族和Shaker通道进行综述,最后对未来的主要研究方向做了展望。

关键词: K⁺吸收及转运, KT/HAK/KUP, HKT, Shaker

Abstract: As one of the major nutrients, potassium (K⁺) is essential for plant growth and development. Large amounts of K⁺ need to be taken up from the soil and transported throughout the plant. The K⁺ transporters and the K⁺ channels mainly mediate K⁺ transport across the plasma membrane and the tonoplast membrane in plants. The HAK/KUP/KT family and the HKT family are two main groups of proteins which have been widely associated with K⁺ uptake and transport, and they fulfill diverse roles in plant growth processes, salt tolerance and osmotic potential regulation. K⁺-permeable members of HKT family seem to be present in monocots only. The Shaker family, comprising voltage-gated channels, dominate the plasma membrane conductance of K⁺ in most environmental conditions. This review summarizes recent research and progress in understanding of the structure, localization, expression, function and regulation of three main K⁺ transport families. We also propose research hotspots and directions for future K⁺ research.

Key words: K⁺ uptake and transport, KT/HAK/KUP, HKT, Shaker

段慧荣, 周学辉, 胡静, 段潇蓉, 田福平, 崔光欣, 王春梅, 杨红善. 高等植物K⁺吸收及转运的分子机制研究进展[J]. 草业学报, 2019, 28(9): 174-191.

DUAN Hui-rong, ZHOU Xue-hui, HU Jing, DUAN Xiao-rong, TIAN Fu-ping, CUI Guang-xin, WANG Chun-mei, YANG Hong-shan. Advances in understanding molecular mechanisms of K⁺ uptake and transport in higher plants[J]. Acta Prataculturae Sinica, 2019, 28(9): 174-191.

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高等植物K⁺吸收及转运的分子机制研究进展

Advances in understanding molecular mechanisms of K⁺ uptake and transport in higher plants

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高等植物K+吸收及转运的分子机制研究进展

Advances in understanding molecular mechanisms of K+ uptake and transport in higher plants

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高等植物K⁺吸收及转运的分子机制研究进展

Advances in understanding molecular mechanisms of K⁺ uptake and transport in higher plants