Dissection of the IDA promoter identifies WRKY transcription factors as abscission regulators in Arabidopsis.

ABSTRACT: Plants shed organs such as leaves, petals, or fruits through the process of abscission. Monitoring cues such as age, resource availability, and biotic and abiotic stresses allow plants to abscise organs in a timely manner. How these signals are integrated into the molecular pathways that drive abscission is largely unknown. The INFLORESCENCE DEFICIENT IN ABSCISSION (IDA) gene is one of the main drivers of floral organ abscission in Arabidopsis and is known to transcriptionally respond to most abscission-regulating cues. By interrogating the IDA promoter in silico and in vitro, we identified transcription factors that could potentially modulate IDA expression. We probed the importance of ERF- and WRKY-binding sites for IDA expression during floral organ abscission, with WRKYs being of speci

SUBMITTER: Galindo-Trigo S 

PROVIDER: S-EPMC11016851 | biostudies-literature | 2024 Apr

REPOSITORIES: biostudies-literature