Mechanisms of Age-Dependent Response to Winter Temperature in Perennial Flowering of Arabis alpina | |
Sara Bergonzi ; et al. | |
刊名 | Science
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2013 | |
卷号 | 340期号:6136页码:1094-1097 |
中文摘要 | Perennial plants live for more than 1 year and flower only after an extended vegetative phase. We used Arabis alpina, a perennial relative of annual Arabidopsis thaliana, to study how increasing age and exposure to winter cold (vernalization) coordinate to establish competence to flower. We show that the APETALA2 transcription factor, a target of microRNA miR172, prevents flowering before vernalization. Additionally, miR156 levels decline as A. alpina ages, causing increased production of SPL (SQUAMOSA PROMOTER BINDING PROTEIN LIKE) transcription factors and ensuring that flowering occurs in response to cold. The age at which plants respond to vernalization can be altered by manipulating miR156 levels. Although miR156 and miR172 levels are uncoupled in A. alpina, miR156 abundance represents the timer controlling age-dependent flowering responses to cold. |
公开日期 | 2013-10-17 |
内容类型 | 期刊论文 |
源URL | [http://ir.xtbg.org.cn/handle/353005/4717] ![]() |
专题 | 西双版纳热带植物园_文献共享 |
推荐引用方式 GB/T 7714 | Sara Bergonzi,et al.. Mechanisms of Age-Dependent Response to Winter Temperature in Perennial Flowering of Arabis alpina[J]. Science,2013,340(6136):1094-1097. |
APA | Sara Bergonzi,&et al..(2013).Mechanisms of Age-Dependent Response to Winter Temperature in Perennial Flowering of Arabis alpina.Science,340(6136),1094-1097. |
MLA | Sara Bergonzi,et al."Mechanisms of Age-Dependent Response to Winter Temperature in Perennial Flowering of Arabis alpina".Science 340.6136(2013):1094-1097. |
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