Investigate the Effect of Potassium on Nodule Symbiosis and Uncover an HAK/KUP/KT Member, GmHAK5, Strongly Responsive to Root Nodulation in Soybean
文献类型： 外文期刊
作者： Liu, Jianjian 1 ; Liu, Jinhui 2 ; Cui, Miaomiao 2 ; Chen, Xiao 3 ; Liu, Junli 4 ; Chen, Jiadong 5 ; Chen, Aiqun 2 ; Xu, Guohua 2 ;
作者机构： 1.Anhui Sci & Technol Univ, Coll Resource & Environm, Fengyang, Peoples R China
2.Nanjing Agr Univ, MOA, Key Lab Plant Nutr & Fertilizat Lowermiddle Reache, Nanjing 210095, Peoples R China
3.Guangdong Acad Agr Sci, Vegetable Res Inst, Guangdong Key Lab New Technol Res Vegetables, Guangzhou, Peoples R China
4.Zhejiang Acad Agr Sci, Inst Environm Resources & Soil Fertilizers, Hangzhou, Peoples R China
5.Zhejiang Acad Agr Sci, Zhejiang Inst Subtrop Crops, Wenzhou, Peoples R China
关键词： Soybean; Symbiotic nitrogen fixation; Potassium transporter; GmHAK5; Nitrogenase
期刊名称：JOURNAL OF PLANT BIOLOGY （ 影响因子：3.15； 五年影响因子：2.659 ）
ISSN： 1226-9239
年卷期： 2022 年 65 卷 6 期
页码：
收录情况： SCI
摘要： Leguminous plants form root nodule organs with soil rhizobia bacteria, which can fix atmospheric nitrogen (N-2) and supply ammonia to the host plant. It is established that the symbiotic N fixation efficiency is substantially influenced by plant nutrients, such as molybdenum (Mo), phosphorus (P), copper (Cu), and zinc (Zn). Potassium (K+) is the most abundant cation in plant cells; however, little evidence regarding the potential link between K nutrition and symbiotic N fixation efficiency is available to date. Here, we showed that K+ deficiency reduced the efficiency of symbiotic nitrogen fixation, and inoculated with rhizobia strain USDA110 could improve plant K+ acquisition. Furthermore, we identified a potassium transporter gene (GmHAK5) that was highly expressed in the root steles and in the vasculature cells of nodules. The GmHAK5 protein was localized at the plasma membrane and could rescue the growth phenotype of yeast K+ uptake-defective mutant. The results obtained from this study provides new insights for the understanding of the potential role of K+ nutrition in modulating symbiotic N fixation in soybean.
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