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Seasonal flowering in annual and perennial plants

时间:2017年02月24日 13:47 发布人: 浏览次数:[]

[责任编辑]江倩倩 [信息提供]生命学院    

报告题目:Seasonal flowering in annual and perennial plants     

报告时间:2017年2月28日上午9:30     

报告地点:闵行校区生物药学楼树华多功能厅(800号) 

报告人:Dr. Prof. George Coupland
      Director of Max Planck Institute for Plant Breeding Research     

联系人:张大兵 zhangdb@sjtu.edu.cn;021-34204869

报告人简介:

Dr. Prof. George Coupland

Director of Max Planck Institute for Plant Breeding Research      

Address: Max Planck Institute for Plant Breeding Research, Carl-von-Linné Weg 10 D-50829 Cologne, Germany  

Phone: +49 221 5062-205 Fax:+49 221 5062-207

Email:coupland@mpipz.mpg.de

报告内容简介:

  We study the mechanisms by which the life cycles of annual and perennial plants are synchronised to the changing seasons. Arabidopsis thaliana is a model annual species and we have shown how circadian-clock regulation of transcription of specific regulatory genes and photoreceptor signaling combine to promote flowering of this species in response to long summer days. This process activates expression in the leaf of a protein that moves systemically to the shoot meristem and reprogrammes transcription leading to flower development. Perennial relatives of A. thaliana show interesting differences in their responses to seasonal cues, and we have developed Arabis alpina as a model perennial. This species flowers predominately in response to winter cold, and shows characteristic features of perennials such as only becoming sensitive to environmental cues after it reaches a certain age and cycling between episodes of flowering and vegetative development within its life cycle. Using a combination of forward genetics, genomics and comparative analyses in a phylogenetic context we have defined some of the mechanisms by which flowering regulation differs between annuals and perennials, contributing to the divergence of these life histories during evolution.       

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