INDETERMINATE DOMAIN-DELLA protein interactions orchestrate gibberellin-mediated cell elongation in wheat and barley.

ABSTRACT: DELLA proteins, members of the GRAS-domain family of transcriptional regulators, play a crucial role in plant growth and development. They modulate transcription indirectly via interactions with hundreds of transcription factors. The phytohormone gibberellin (GA) triggers DELLA degradation, providing a mechanism by which plants can integrate developmental and environmental signals to regulate gene expression and optimize growth responses. In agriculture, DELLA mutations have been instrumental in improving crop performance. Most modern wheat (Triticum aestivum L.) varieties carry Rht-B1b or Rht-D1b alleles that encode DELLA proteins resistant to GA-mediated degradation, resulting in constitutive partial suppression of stem growth, a semi-dwarf stature, and lodging resis

SUBMITTER: Sokolowska P 

PROVIDER: S-EPMC12867750 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature