<i>VERNALIZATION1</i> controls developmental responses of winter wheat under high ambient temperatures.

ABSTRACT: Low temperatures are required to regulate the transition from vegetative to reproductive growth via a pathway called vernalization. In wheat, vernalization predominantly involves the cold upregulation of the floral activator VERNALIZATION1 (VRN1). Here, we have used an extreme vernalization response, identified through studying ambient temperature responses, to reveal the complexity of temperature inputs into VRN-A1, with allelic inter-copy variation at a gene expansion of VRN-A1 modulating these effects. We find that the repressors of the reproductive transition, VERNALIZATION2 (VRN2) and ODDSOC2, are re-activated when plants experience high temperatures during and after vernalization. In addition, this re-activation is regulated by photope

SUBMITTER: Dixon LE 

PROVIDER: S-EPMC6382010 | biostudies-literature | 2019 Feb

REPOSITORIES: biostudies-literature