Zhang, Zhihua ORCID: 0000-0002-7439-2874, Li, Zhao, Wang, Wei, Jiang, Zhimin, Guo, Liping, Wang, Xiaohan, Qian, Yangwen, Huang, Xiahe, Liu, Yongqiang, Liu, Xiujie, Qiu, Yahong, Li, Aifu, Yan, Yu, Xie, Junpeng, Cao, Shouyun, Kopriva, Stanislav, Li, Legong, Kong, Fanjiang ORCID: 0000-0001-7138-1478, Liu, Baohui, Wang, Yingchun, Hu, Bin and Chu, Chengcai ORCID: 0000-0001-8097-6115 (2021). Modulation of nitrate-induced phosphate response by the MYB transcription factor RLI1/HINGE1 in the nucleus. Mol. Plant., 14 (3). S. 517 - 530. CAMBRIDGE: CELL PRESS. ISSN 1752-9867

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Abstract

The coordinated utilization of nitrogen (N) and phosphorus (P) is vital for plants to maintain nutrient balance and achieve optimal growth. Previously, we revealed a mechanism by which nitrate induces genes for phosphate utilization; this mechanism depends on NRT1.1B-facilitated degradation of cytoplasmic SPX4, which in turn promotes cytoplasmic-nuclear shuttling of PHR2, the central transcription factor of phosphate signaling, and triggers the nitrate-induced phosphate response (NIPR) and N-P coordinated utilization in rice. In this study, we unveiled a fine-tuning mechanism of NIPR in the nucleus regulated by Highly Induced by Nitrate Gene 1 (HINGE1, also known as RLI1), a MYB-transcription factor closely related to PHR2. RLI1/HINGE1, which is transcriptionally activated by PHR2 under nitrate induction, can directly activate the expression of phosphate starvation-induced genes. More importantly, RLI1/HINGE1 competes with PHR2 for binding to its repressor proteins in the nucleus (SPX proteins), and consequently releases PHR2 to further enhance phosphate response. Therefore, RLI1/HINGE1 amplifies the phosphate response in the nucleus downstream of the cytoplasmic SPX4-PHR2 cascade, thereby enabling fine-tuning of N-P balance when nitrate supply is sufficient.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Zhang, ZhihuaUNSPECIFIEDorcid.org/0000-0002-7439-2874UNSPECIFIED
Li, ZhaoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wang, WeiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jiang, ZhiminUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Guo, LipingUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wang, XiaohanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Qian, YangwenUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Huang, XiaheUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Liu, YongqiangUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Liu, XiujieUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Qiu, YahongUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Li, AifuUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Yan, YuUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Xie, JunpengUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cao, ShouyunUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kopriva, StanislavUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Li, LegongUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kong, FanjiangUNSPECIFIEDorcid.org/0000-0001-7138-1478UNSPECIFIED
Liu, BaohuiUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wang, YingchunUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hu, BinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Chu, ChengcaiUNSPECIFIEDorcid.org/0000-0001-8097-6115UNSPECIFIED
URN: urn:nbn:de:hbz:38-596154
DOI: 10.1016/j.molp.2020.12.005
Journal or Publication Title: Mol. Plant.
Volume: 14
Number: 3
Page Range: S. 517 - 530
Date: 2021
Publisher: CELL PRESS
Place of Publication: CAMBRIDGE
ISSN: 1752-9867
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
Biochemistry & Molecular Biology; Plant SciencesMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/59615

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