Sulfur deficiency-induced genes affect seed protein accumulation and composition under sulfate deprivation

Sulfur deficiency-induced proteins SDI1 and SDI2 play a fundamental role in sulfur homeostasis under sulfate-deprived conditions (-S) by downregulating glucosinolates. Here, we identified that besides glucosinolate regulation under -S, SDI1 downregulates another sulfur pool, the S-rich 2S seed stora...

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Veröffentlicht in:Plant physiology (Bethesda) Jg. 187; H. 4; S. 2419
Hauptverfasser: Aarabi, Fayezeh, Rakpenthai, Apidet, Barahimipour, Rouhollah, Gorka, Michal, Alseekh, Saleh, Zhang, Youjun, Salem, Mohamed A, Brückner, Franziska, Omranian, Nooshin, Watanabe, Mutsumi, Nikoloski, Zoran, Giavalisco, Patrick, Tohge, Takayuki, Graf, Alexander, Fernie, Alisdair R, Hoefgen, Rainer
Format: Journal Article
Sprache:Englisch
Veröffentlicht: United States 04.12.2021
Schlagworte:
Arabidopsis - physiology
Arabidopsis Proteins - genetics
Arabidopsis Proteins - metabolism
Gene Expression Regulation, Plant
Genes, Plant
Seeds - chemistry
Seeds - metabolism
Sulfates - metabolism
ISSN:1532-2548, 1532-2548
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Zusammenfassung:Sulfur deficiency-induced proteins SDI1 and SDI2 play a fundamental role in sulfur homeostasis under sulfate-deprived conditions (-S) by downregulating glucosinolates. Here, we identified that besides glucosinolate regulation under -S, SDI1 downregulates another sulfur pool, the S-rich 2S seed storage proteins in Arabidopsis (Arabidopsis thaliana) seeds. We identified that MYB28 directly regulates 2S seed storage proteins by binding to the At2S4 promoter. We also showed that SDI1 downregulates 2S seed storage proteins by forming a ternary protein complex with MYB28 and MYC2, another transcription factor involved in the regulation of seed storage proteins. These findings have significant implications for the understanding of plant responses to sulfur deficiency.
Bibliographie:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:1532-2548
1532-2548
DOI:10.1093/plphys/kiab386