Molecular Basis of Age-Dependent Vernalization in Cardamine flexuosa

• DOI: 10.1126/science.1234340
• Publication Date: 2013-05-30T18:10:59Z
• Authors: Chuan-Miao Zhou; Tian-Qi Zhang; Xi Wang; Sha Yu; Heng Lian; Hongbo Tang; Zheng-Yan Feng; Judita Zozomova-L...; Jia-Wei Wang
• Keywords: Vernalization

Plants flower in response to many varied cues, such as temperature, photoperiod, and age. The floral transition of Cardamine flexuosa, a herbaceous biennial-to-perennial plant, requires exposure cold treatment known vernalization. C. flexuosa younger than 5 weeks old are not fully responsive treatment. We demonstrate that the levels two age-regulated microRNAs, miR156 miR172, regulate timing sensitivity Age vernalization pathways coordinately flowering through modulating expression CfSOC1, flower-promoting MADS-box gene. related annual Arabidopsis thaliana, which has both age pathways, does possess an age-dependent response. Thus, recruitment cue environmental signals contributes evolution life cycle plants.