The MADS-Box Gene MdDAM1 Controls Growth Cessation and Bud Dormancy in Apple.

ABSTRACT: Apple trees require a long exposure to chilling temperature during winter to acquire competency to flower and grow in the following spring. Climate change or adverse meteorological conditions can impair release of dormancy and delay bud break, hence jeopardizing fruit production and causing substantial economic losses. In order to characterize the molecular mechanisms controlling bud dormancy in apple we focused our work on the MADS-box transcription factor gene MdDAM1. We show that MdDAM1 silencing is required for the release of dormancy and bud break in spring. MdDAM1 transcript levels are drastically reduced in the low-chill varieties 'Anna' and 'Dorsett Golden' compared to 'Golden Delicious' corroborating its role as a key genetic factor controlling the release of

SUBMITTER: Moser M 

PROVIDER: S-EPMC7358357 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature