Shoot bending promotes flower bud formation by miRNA-mediated regulation in apple (Malus domestica Borkh.).

ABSTRACT: Flower induction in apple (Malus domestica Borkh.) trees plays an important life cycle role, but young trees produce fewer and inferior quality flower buds. Therefore, shoot bending has become an important cultural practice, significantly promoting the capacity to develop more flower buds during the growing seasons. Additionally, microRNAs (miRNAs) play essential roles in plant growth, flower induction and stress responses. In this study, we identified miRNAs potentially involved in the regulation of bud growth, and flower induction and development, as well as in the response to shoot bending. Of the 195 miRNAs identified, 137 were novel miRNAs. The miRNA expression profiles revealed that the expression levels of 68 and 27 known miRNAs were down-regulated and up-regulated, respectively, in

SUBMITTER: Xing L 

PROVIDER: S-EPMC4755197 | biostudies-literature | 2016 Feb

REPOSITORIES: biostudies-literature