Factors that affect protein abundance of a positive regulator of abscisic acid signalling, the basic leucine zipper transcription factor ABRE-binding factor 2 (ABF2).

ABSTRACT: Most members of basic leucine zipper (bZIP) transcription factor (TF) subgroup A play important roles as positive effectors in abscisic acid (ABA) signaling during germination and/or in vegetative stress responses. In multiple plant species, one member, ABA insensitive 5 (ABI5), is a major TF that promotes seed maturation and blocks early seeding growth in response to ABA. Other members, referred to as either ABRE-binding factors (ABFs), ABRE-binding proteins (AREBs), or D3 protein-binding factors (DPBFs), are implicated as major players in stress responses during vegetative growth. Studies on the proteolytic regulation of ABI5, ABF1, and ABF3 in Arabidopsis thaliana have shown that the proteins have moderate degradation rates and accumulate in the presence of the proteasome inhibit

SUBMITTER: Linden KJ 

PROVIDER: S-EPMC8244744 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature