Antisense transcription represses Arabidopsis seed dormancy QTL DOG1 to regulate drought tolerance.

ABSTRACT: Plants have developed multiple strategies to sense the external environment and to adapt growth accordingly. Delay of germination 1 (DOG1) is a major quantitative trait locus (QTL) for seed dormancy strength in Arabidopsis thaliana that is reported to be expressed exclusively in seeds. DOG1 is extensively regulated, with an antisense transcript (asDOG1) suppressing its expression in seeds. Here, we show that asDOG1 shows high levels in mature plants where it suppresses DOG1 expression under standard growth conditions. Suppression is released by shutting down antisense transcription, which is induced by the plant hormone abscisic acid (ABA) and drought. Loss of asDOG1 results in constitutive high-level DOG1 expression, conferrin

SUBMITTER: Yatusevich R 

PROVIDER: S-EPMC5709759 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature