AMS — Brassica napus

Summary

BnAMS (DARMORV10_A03P46130.1) on chromosome A03 of oilseed rape (Brassica napus) encodes a bHLH transcription factor of the AMS/ICE1/BHLH6-like family, with DNA-binding, chromatin-binding, and protein dimerization activities. The gene is associated with anther morphogenesis, tapetum development, pollen wall formation, male fertility, and stamen morphology traits. It is linked to pigment metabolism, including carotenoid and anthocyanin breakdown, as well as vitamin A and B6 metabolism, photosynthesis upregulation, phloem loading, and responses to phosphate starvation. Associations with agronomic traits include seed weight, seed and flower color, plant height, leaf number and size, chlorophyll content, starch and protein content, water use efficiency, submergence tolerance, and heterosis. The gene is also linked to carbon isotope discrimination, oxidative stress response, and resistance to Pseudomonas syringae. Related genes in other species are associated with male sterility, anther development, and microspore development.