西亚试剂：： Basis of Age-Dependent Vernalization

Chuan-Miao Zhou1, Tian-Qi Zhang1,2, Xi Wang3, Sha Yu1,2, Heng Lian1, Hongbo Tang1, Zheng-Yan Feng1,2, Judita Zozomova-Lihová4, Jia-Wei Wang1,3,*

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

丙烯醛肉桂醛桂皮醛4-硝基肉桂醛