BGIOSGA013420 — Oryza sativa Indica Group

Summary

BGIOSGA013420 (RGA, SLR1) on chromosome 3 of Indica rice encodes a DELLA protein of the GRAS transcription factor family, possessing gibberellin-binding, phytochrome-binding, and transcription corepressor-binding activities. This gene is associated with grain yield, salt stress tolerance, and responses to both biotic and abiotic stresses including blight, low temperature, and jasmonic acid-mediated defense. It is linked to plant height, dwarfism, tiller number, flower development, and gibberellin and brassinosteroid signaling. SLR1 is associated with the regulation of calcium ion transport, systemic acquired resistance, and cellular responses to heat. The protein localizes to the nucleus, plasmodesmata, plastid, and mitochondria, and participates in GA-GID1-DELLA signaling and SCF complex-mediated degradation. Studies of related genes in other species link this gene family to defense responses, drought tolerance, fruit ripening, and trichome differentiation.