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Your search keyword '"Chen, Qingshuai"' showing total 2 results
Start Over Author "Chen, Qingshuai" Publisher american society of plant biologists
2 results on '"Chen, Qingshuai"'

1. Light and Abscisic Acid Coordinately Regulate Greening of Seedlings.

Author

Xu D, Wu D, Li XH, Jiang Y, Tian T, Chen Q, Ma L, Wang H, Deng XW, and Li G

Subjects
Acetylation, Arabidopsis drug effects, Arabidopsis genetics, Arabidopsis radiation effects, Arabidopsis Proteins genetics, Arabidopsis Proteins metabolism, Darkness, Etiolation drug effects, Etiolation radiation effects, Gene Expression Regulation, Plant drug effects, Gene Expression Regulation, Plant radiation effects, Histone Deacetylases genetics, Histone Deacetylases metabolism, Histones metabolism, Intracellular Signaling Peptides and Proteins metabolism, Methylation, Phytochrome genetics, Phytochrome metabolism, Protein Binding drug effects, Protein Binding radiation effects, Seedlings drug effects, Seedlings radiation effects, Transcription, Genetic drug effects, Transcription, Genetic radiation effects, Abscisic Acid pharmacology, Arabidopsis physiology, Light, Seedlings physiology
Abstract

The greening of etiolated seedlings is crucial for the growth and survival of plants. After reaching the soil surface and sunlight, etiolated seedlings integrate numerous environmental signals and internal cues to control the initiation and rate of greening thus to improve their survival and adaption. However, the underlying regulatory mechanisms by which light and phytohormones, such as abscisic acid (ABA), coordinately regulate greening of the etiolated seedlings is still unknown. In this study, we showed that Arabidopsis ( Arabidopsis thaliana ) DE-ETIOLATED1 (DET1), a key negative regulator of photomorphogenesis, positively regulated light-induced greening by repressing ABA responses. Upon irradiating etiolated seedlings with light, DET1 physically interacts with FAR-RED ELONGATED HYPOCOTYL3 (FHY3) and subsequently associates to the promoter region of the FHY3 direct downstream target ABA INSENSITIVE5 ( ABI5 ). Further, DET1 recruits HISTONE DEACETYLASE6 to the locus of the ABI5 promoter and reduces the enrichments of H3K27ac and H3K4me3 modification, thus subsequently repressing ABI5 expression and promoting the greening of etiolated seedlings. This study reveals the physiological and molecular function of DET1 and FHY3 in the greening of seedlings and provides insights into the regulatory mechanism by which plants integrate light and ABA signals to fine-tune early seedling establishment., (© 2020 American Society of Plant Biologists. All Rights Reserved.)

Published
2020
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2. WRKY18 and WRKY53 Coordinate with HISTONE ACETYLTRANSFERASE1 to Regulate Rapid Responses to Sugar.

Author

Chen Q, Xu X, Xu D, Zhang H, Zhang C, and Li G

Subjects
Arabidopsis genetics, Arabidopsis Proteins genetics, DNA-Binding Proteins genetics, Gene Expression Regulation, Plant drug effects, Gene Expression Regulation, Plant genetics, Histone Acetyltransferases genetics, Signal Transduction drug effects, Signal Transduction genetics, Transcription Factors genetics, Arabidopsis drug effects, Arabidopsis metabolism, Arabidopsis Proteins metabolism, DNA-Binding Proteins metabolism, Histone Acetyltransferases metabolism, Sugars pharmacology, Transcription Factors metabolism
Abstract

Sugars provide a source of energy; they also function as signaling molecules that regulate gene expression, affect metabolism, and alter growth in plants. Rapid responses to sugar signaling and metabolism are essential for optimal growth and fitness, but the regulatory mechanisms underlying these are largely unknown. In this study, we found that the rapid induction of sugar responses in Arabidopsis ( Arabidopsis thaliana ) requires the W-box cis-elements in the promoter region of GLC 6-PHOSPHATE/PHOSPHATE TRANSLOCATOR2 , a well-studied sugar response marker gene. The transcription factors WRKY18 and WRKY53 directly bind to the W-Box cis-elements in the promoter region of sugar response genes and activate their expression. In addition, HISTONE ACETYLTRANSFERASE 1 (HAC1) is recruited to the WRKY18 and WRKY53 complex that resides on the promoters. In this complex, HAC1 facilitates the acetylation of histone 3 Lys 27 (H3K27ac) on the sugar-responsive genes. Taken together, our findings demonstrate a mechanism by which sugar regulates chromatin modification and gene expression, thus helping plants to adjust their growth in response to environmental changes., (© 2019 American Society of Plant Biologists. All Rights Reserved.)

Published
2019
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