DELLA proteins orchestrate arbuscule accomodation.

Authors

Tian Zeng, Caroline Gutjahr

Published in

Current opinion in plant biology. Volume 93. Pages 102936. Aug 03, 2026. Epub Aug 03, 2026.

Abstract

Arbuscular mycorrhiza (AM) represents a key strategy for plants to overcome nutrient starvation. In legumes and rice, the development of this symbiosis requires the GRAS transcription factor DELLA, previously identified as central proteolytic target of gibberellin (GA) signaling. DELLA performs critical functions across multiple stages in AM development, including inner root cortex patterning, arbuscule initiation and degeneration, by regulating essential downstream genes driving these phenomena. Moreover, DELLA appears as a regulatory hub that integrates hormonal signals, environmental stimuli, and symbiosis formation. Here, we highlight recent advances in our understanding of DELLA-mediated regulation of AM development and provide state-of-the-art insights into how DELLA orchestrates these signaling pathways.

PMID:
42546371
Bibliographic data and abstract were imported from PubMed on 04 Aug 2026.

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