气候变化领域集成服务门户(CCPortal): Arabidopsis Thaliana Homeobox Gene 1 controls plant architecture by locally restricting environmental responses

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DOI	10.1073/pnas.2018615118
	Arabidopsis Thaliana Homeobox Gene 1 controls plant architecture by locally restricting environmental responses
	Ejaz M.; Bencivenga S.; Tavares R.; Bush M.; Sablowski R.
发表日期	2021
ISSN	00278424
卷号	118 期号:17
英文摘要	The diversity and environmental plasticity of plant growth results from variations of repetitive modules, such as the basic shoot units made of a leaf, axillary bud, and internode. Internode elongation is regulated both developmentally and in response to environmental conditions, such as light quality, but the integration of internal and environmental signals is poorly understood. Here, we show that the compressed rosette growth habit of Arabidopsis is maintained by the convergent activities of the organ boundary gene ARABIDOPSIS THALIANA HOMEOBOX GENE 1 (ATH1) and of the gibberellin-signaling DELLA genes. Combined loss of ATH1 and DELLA function activated stem development during the vegetative phase and changed the growth habit from rosette to caulescent. Chromatin immunoprecipitation high-throughput sequencing and genetic analysis indicated that ATH1 and the DELLA gene REPRESSOR OF GA1-3 (RGA) converge on the regulation of light responses, including the PHYTOCHROME INTERACTING FACTORS (PIF) pathway, and showed that the ATH1 input is mediated in part by direct activation of BLADE ON PETIOLE (BOP1 and BOP2) genes, whose products destabilize PIF proteins. We conclude that an organ-patterning gene converges with hormone signaling to spatially restrict environmental responses and establish a widespread type of plant architecture. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Arabidopsis; Plant architecture; Plant development; Stem growth
语种	英语
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/179769
作者单位	Cell and Developmental Biology Department, John Innes Centre, Norwich, NR4 7UH, United Kingdom
推荐引用方式 GB/T 7714	Ejaz M.,Bencivenga S.,Tavares R.,et al. Arabidopsis Thaliana Homeobox Gene 1 controls plant architecture by locally restricting environmental responses[J],2021,118(17).
APA	Ejaz M.,Bencivenga S.,Tavares R.,Bush M.,&Sablowski R..(2021).Arabidopsis Thaliana Homeobox Gene 1 controls plant architecture by locally restricting environmental responses.Proceedings of the National Academy of Sciences of the United States of America,118(17).
MLA	Ejaz M.,et al."Arabidopsis Thaliana Homeobox Gene 1 controls plant architecture by locally restricting environmental responses".Proceedings of the National Academy of Sciences of the United States of America 118.17(2021).