Ethylene-orchestrated circuitry coordinates a seedling&apos;s response to   soil cover and etiolated growth

doi:10.1073/pnas.1402491111

CORC > 北京大学 > 生命科学学院

	Ethylene-orchestrated circuitry coordinates a seedling's response to soil cover and etiolated growth
	Zhong, Shangwei ; Shi, Hui ; Xue, Chang ; Wei, Ning ; Guo, Hongwei ; Deng, Xing Wang
刊名	proceedings of the national academy of sciences of the united states of america
	2014
关键词	plant hormone ethylene chlorophyll biosynthesis ROS cell death SIGNAL-TRANSDUCTION PATHWAY CHLOROPHYLL BIOSYNTHESIS TRANSCRIPTION FACTOR TETRAPYRROLE BIOSYNTHESIS CHLOROPLAST DEVELOPMENT ARABIDOPSIS SEEDLINGS MOLECULAR FRAMEWORK STRESS RESPONSES HIGHER-PLANTS LIGHT
DOI	10.1073/pnas.1402491111
英文摘要	The early life of terrestrial seed plants often starts under the soil in subterranean darkness. Over time and through adaptation, plants have evolved an elaborate etiolation process that enables seedlings to emerge from soil and acquire autotrophic ability. This process, however, requires seedlings to be able to sense the soil condition and relay this information accordingly to modulate both the seedlings' growth and the formation of photosynthetic apparatus. The mechanism by which soil overlay drives morphogenetic changes in plants, however, remains poorly understood, particularly with regard to the means by which the cellular processes of different organs are coordinated in response to disparate soil conditions. Here, we illustrate that the soil overlay quantitatively activates seedlings' ethylene production, and an EIN3/EIN3-like 1-dependent ethylene-response cascade is required for seedlings to successfully emerge from the soil. Under soil, an ERF1 pathway is activated in the hypocotyl to slow down cell elongation, whereas a PIF3 pathway is activated in the cotyledon to control the preassembly of photosynthetic machinery. Moreover, this latter PIF3 pathway appears to be coupled to the ERF1-regulated upward-growth rate. The coupling of these two pathways facilitates the synchronized progression of etioplast maturation and hypocotyl growth, which, in turn, ultimately enables seedlings to maintain the amount of protochlorophyllide required for rapid acquisition of photoautotrophic capacity without suffering from photooxidative damage during the dark-to-light transition. Our findings illustrate the existence of a genetic signaling pathway driving soil-induced plant morphogenesis and define the specific role of ethylene in orchestrating organ-specific soil responses in Arabidopsis seedlings.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000333027900022&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Multidisciplinary Sciences; SCI(E); 15; ARTICLE; xingwang.deng@yale.edu; hongweig@pku.edu.cn; ning.wei@yale.edu; 11; 3913-3920; 111
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/389634]
专题	生命科学学院
推荐引用方式 GB/T 7714	Zhong, Shangwei,Shi, Hui,Xue, Chang,et al. Ethylene-orchestrated circuitry coordinates a seedling's response to soil cover and etiolated growth[J]. proceedings of the national academy of sciences of the united states of america,2014.
APA	Zhong, Shangwei,Shi, Hui,Xue, Chang,Wei, Ning,Guo, Hongwei,&Deng, Xing Wang.(2014).Ethylene-orchestrated circuitry coordinates a seedling's response to soil cover and etiolated growth.proceedings of the national academy of sciences of the united states of america.
MLA	Zhong, Shangwei,et al."Ethylene-orchestrated circuitry coordinates a seedling's response to soil cover and etiolated growth".proceedings of the national academy of sciences of the united states of america (2014).