Dosage differences in 12-OXOPHYTODIENOATE REDUCTASE genes modulate wheat root growth.

ABSTRACT: Wheat, an essential crop for global food security, is well adapted to a wide variety of soils. However, the gene networks shaping different root architectures remain poorly understood. We report here that dosage differences in a cluster of monocot-specific 12-OXOPHYTODIENOATE REDUCTASE genes from subfamily III (OPRIII) modulate key differences in wheat root architecture, which are associated with grain yield under water-limited conditions. Wheat plants with loss-of-function mutations in OPRIII show longer seminal roots, whereas increased OPRIII dosage or transgenic over-expression result in reduced seminal root growth, precocious development of lateral roots and increased jasmonic acid (JA and JA-Ile). Pharmacological inhibition of JA-biosynthesis abolishes root length differences, consist

SUBMITTER: Gabay G 

PROVIDER: S-EPMC9892559 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature