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AtSDR4L and DIG1 interact with VAL2 to promote seed-to-seedling transition

ABSTRACT: AtSDR4L and DIG1 interact with VAL2 to promote seed-to-seedling transition

PROVIDER: PRJNA1035518 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR26666710_1.fastq.gz	Fastqsanger.gz
	SRR26666710_2.fastq.gz	Fastqsanger.gz
	SRR26666711_1.fastq.gz	Fastqsanger.gz
	SRR26666711_2.fastq.gz	Fastqsanger.gz
	SRR26666712_1.fastq.gz	Fastqsanger.gz

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AtSDR4L and DIG1 interact with VAL2 to promote seed-to-seedling transition

Project description:During the embryonic-to-vegetative transition in plants, many genes that were active in seeds become transcriptionally turned off. Recently, we reported a new transcriptional corepressor of the embryonic program, SEED DORMANCY 4-LIKE (AtSDR4L). Multiple lines of evidence suggest that AtSDR4L plays an essential role in regulating the transition from seed to seedling, possibly by collaborating with components of Polycomb Repressive Complexes (PRCs) and PRC-associated proteins VIVIPAROUS1/ABI3-LIKE (VAL) proteins. Through yeast-two-hybrid (Y2H) assays and genome-wide binding analysis, we demonstrated that AtSDR4L and DIG1 physically interact with VAL2 but not with VAL1. The interactions depend on the C-terminal halves of AtSDR4L and DIG1, and the N-terminal half of VAL2. AtSDR4L binds to target loci in germinating seeds, preceding reduced accumulation of H3K27me3 Atsdr4l seedlings at a few loci important for seed development. These findings suggest AtSDR4L, and potentially DIG1, facilitate the recruitment of PRC2 through VAL2 to inactivate seed development genes, thus promoting the seed-to-seedling transition.

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