Nitrogen inhibition of nitrogenase activity involves the modulation of cytosolic invertase in soybean nodule
文献类型： 外文期刊
作者： Xu, Qinzhen 1 ; Wang, Xin 3 ; Wang, Nan 4 ; Li, Suning 5 ; Yao, Xiaolei 1 ; Kuang, Huaqin 3 ; Qiu, Zhimin 6 ; Ke, Danxia 7 ; Yang, Wenqiang 2 ; Guan, Yuefeng 3 ;
作者机构： 1.Fujian Agr & Forestry Univ, Coll Resources & Environm, Fujian Prov Key Lab Haixia Appl Plant Syst Biol, Fuzhou 350002, Fujian, Peoples R China
2.Chinese Acad Sci, Photosynth Res Ctr, Key Lab Photobiol, Inst Bot, Beijing 100093, Peoples R China
3.Guangzhou Univ, Innovat Ctr Mol Genet & Evolut, Sch Life Sci, Guangdong Prov Key Lab Plant Adaptat & Mol Design, Guangzhou 510006, Guangdong, Peoples R China
4.Inner Mongolia Univ, Sch Life Sci, Hohhot 010000, Inner Mongolia, Peoples R China
5.Jiangxi Acad Agr Sci, Crop Inst, Jiangxi Prov Key Lab Oil Crops Genet Improvement 2, Nanchang 330200, Jiangxi, Peoples R China
6.Zhejiang Acad Agr Sci, Zhejiang Inst Subtrop Crops, Wenzhou 325005, Zhejiang, Peoples R China
7.Xinyang Normal Univ, Coll Life Sci, Xinyang 464000, Henan, Peoples R China
8.Xinyang Normal Univ, Inst Conservat & Utilizat Agrobioresources Dabie M, Xinyang 464000, Henan, Peoples R China
关键词： Cytosolic invertase; GmCIN1; Nitrogen fixation; Carbon metabolism; Symbiotic nitrogen fixation; Legume
期刊名称：JOURNAL OF GENETICS AND GENOMICS （ 影响因子：7.1； 五年影响因子：6.4 ）
ISSN： 1673-8527
年卷期： 2024 年 51 卷 12 期
页码：
收录情况： SCI
摘要： Legume symbiotic nitrogen fixation (SNF) is suppressed by inorganic nitrogen (N) in the soil. High N inhibition of nitrogenase activity is associated with the deprivation of carbon allocation and metabolism in nodules. However, the underlying molecular mechanisms remain unclear. Here, we identify GmCIN1, which encodes a cytosolic invertase, as a gateway for the N-tuning of sucrose utilization in nodules. GmCIN1 is enriched in mature soybean nodules, and its expression is regulated by nitrogen status. The knockout of GmCIN1 using genome editing partially mimics the inhibitory effects of N on nitrogenase activity and sugar content and the impact of high N on nodule transcriptomes. This indicates that GmCIN1 partially mediates the high N inhibition of nodule activity. Moreover, ChIP-qPCR and EMSA reveal that SNAP1/2 transcription factors directly bind to the GmCIN1 promoter. In addition, SNAP1/2 may be involved in the repression of GmCIN1 expression in mature nodules at high N concentrations. Our findings provide insights into the involvement of the transcriptional tuning of carbon (C) metabolism genes by N-signaling modulators in the N-induced inhibition of nitrogenase activity. Copyright (c) 2024, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, and Genetics Society of China. Published by Elsevier Limited and Science Press. All rights are reserved,
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