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231227s2024 xx |||||o 00| ||eng c |
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|a 10.1111/nph.19480
|2 doi
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|a pubmed25n1219.xml
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|a DE-627
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Shen, Tao
|e verfasserin
|4 aut
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|a A B-box transcription factor OsBBX17 regulates saline-alkaline tolerance through the MAPK cascade pathway in rice
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 14.02.2024
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|a Date Revised 14.02.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2023 The Authors. New Phytologist © 2023 New Phytologist Foundation.
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|a Rice OsBBX17 encodes a B-box zinc finger transcription factor in which the N-terminal B-box structural domain interacts with OsMPK1. In addition, it directly binds to the G-box of OsHAK2 and OsHAK7 promoters and represses their transcription. Under saline-alkaline conditions, the expression of OsBBX17 was inhibited. Meanwhile, activation of the OsMPK1-mediated mitogen-activated protein kinase cascade pathway caused OsMPK1 to interact with OsBBX17 and phosphorylate OsBBX17 at the Thr-95 site. It reduced OsBBX17 DNA-binding activity and enhanced saline-alkaline tolerance by deregulating transcriptional repression of OsHAK2 and OsHAK7. Genetic assays showed that the osbbx17-KO had an excellent saline-alkaline tolerance, whereas the opposite was in OsBBX17-OE. In addition, overexpression of OsMPK1 significantly improved saline-alkaline tolerance, but knockout of OsMPK1 caused an increased sensitivity. Further overexpression of OsBBX17 in the osmpk1-KO caused extreme saline-alkaline sensitivity, even a quick death. OsBBX17 was validated in saline-alkaline tolerance from two independent aspects, transcriptional level and post-translational protein modification, unveiling a mechanistic framework by which OsMPK1-mediated phosphorylation of OsBBX17 regulates the transcription of OsHAK2 and OsHAK7 to enhance the Na+ /K+ homeostasis, which partially explains light on the molecular mechanisms of rice responds to saline-alkaline stress via B-box transcription factors for the genetic engineering of saline-alkaline tolerant crops
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|a Journal Article
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|a MAPK cascade pathway
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|a Na+/K+ homeostasis
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|a protein phosphorylation
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|a rice
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|a saline-alkaline stress
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|a transcriptional regulation
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|a Transcription Factors
|2 NLM
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| 650 |
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|a Plant Proteins
|2 NLM
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| 700 |
1 |
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|a Xu, Fengjuan
|e verfasserin
|4 aut
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| 700 |
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|a Chen, Dan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yan, Runjiao
|e verfasserin
|4 aut
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| 700 |
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|a Wang, Qingwen
|e verfasserin
|4 aut
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| 700 |
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|a Li, Kaiyue
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Gang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ni, Lan
|e verfasserin
|4 aut
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| 700 |
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|a Jiang, Mingyi
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 241(2024), 5 vom: 30. März, Seite 2158-2175
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnas
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| 773 |
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|g volume:241
|g year:2024
|g number:5
|g day:30
|g month:03
|g pages:2158-2175
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|u http://dx.doi.org/10.1111/nph.19480
|3 Volltext
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