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	Molecular mechanism for plant seedling emerging from the soil; Molecular mechanism for plant seedling emerging from the soil
	Hui Shi ; Xing Shen ; Renlu Liu ; Chang Xue ; Xing Wang Deng ; Shangwei Zhong
	2016
关键词	seedling emergence COP1 ethylene signaling phy B EBF1 and EBF2 EIN3/EIL1 seedling emergence COP1 ethylene signaling phy B EBF1 and EBF2 EIN3/EIL1
英文摘要	Low The survival of seed plants in natural environments requires the successful emergence from the soil. In this process,the ethylene signaling pathway is utilized by plants to sense and respond to the mechanical resistance of the soil. Here,we report that CONSTITUTIVE PHOTOMORPHOGENESIS 1(COP1),a central repressor of light signaling,is a key component required for seedlings to sense the depth of soil overlay. Mutation in COP1 causes severe defects in penetrating soil,due to decreased level of EIN3,a master transcription factor in ethylene pathway that mediates seedling emergence. We show that COP1 directly targets the F-box proteins EBF1 and EBF2 for ubiquitination and degradation,thus stabilizing EIN3. As seedlings grow towards the surface,the depth of soil overlay decreases,resulting in a gradual increase of light fluences. COP1 channels the light signals while ethylene transduces the information on soil mechanical conditions,which cooperatively control EIN3 protein levels to promote seedling emergence fro...; Low The survival of seed plants in natural environments requires the successful emergence from the soil. In this process,the ethylene signaling pathway is utilized by plants to sense and respond to the mechanical resistance of the soil. Here,we report that CONSTITUTIVE PHOTOMORPHOGENESIS 1(COP1),a central repressor of light signaling,is a key component required for seedlings to sense the depth of soil overlay. Mutation in COP1 causes severe defects in penetrating soil,due to decreased level of EIN3,a maste; 中国遗传学会、中国细胞生物学学会、中国植物学会、中国植物生理与植物分子生物学学会、中国作物学会; 1
语种	英语
出处	2016年全国植物生物学大会
内容类型	其他
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/479861]
专题	生命科学学院
推荐引用方式 GB/T 7714	Hui Shi,Xing Shen,Renlu Liu,et al. Molecular mechanism for plant seedling emerging from the soil, Molecular mechanism for plant seedling emerging from the soil. 2016-01-01.

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