AP1 (BJUB03G20440S) — Brassica juncea

Summary

BjAP1 (BJUB03G20440S) on Indian mustard chromosome B03 encodes a MADS-box transcription factor containing K-box and MEF2-like domains, with annotated DNA-binding, transcription coactivator and corepressor activities, and chromatin-related functions including histone binding and nucleosome array spacer activity. The gene is associated with floral whorl development, release of seed from dormancy, abscisic acid breakdown, regulation of proanthocyanidin anabolism, and responses to cytokinin and biotic stimuli. It localises to the nucleus, cytosol, plastid, vacuolar membrane and plasmodesmata. Associations with numerous agronomic traits include fruit shattering, seed color, flower morphology, leaf margin serration, plant size, and boron and potassium sensitivity. Studies of related genes in other species link the family to floral meristem identity, fruit development, pod shatter resistance, seed yield, and leaf longevity.