FAB2 — Glycine max

Summary

GLYMA_02G138100V4 (GmFAB2, also known as GmSSI2) on soybean chromosome 2 encodes a stearoyl-CoA 9-desaturase and stearoyl-[ACP] desaturase, placing it in the fatty acid desaturase-2 family. This plastid-localised enzyme is associated with unsaturated fatty acid anabolism, lipogenesis, and jasmonic acid anabolism. The gene has been connected to seed weight, protein content, starch content, plant height, stem diameter, and seed yield. It is linked to defense signaling, disease resistance, aphid resistance, salicylic acid and jasmonic acid-mediated signaling pathways, and nitric oxide-mediated defense signaling. Other associations include embryo development, cuticle development, xylem development, nitrogen fixation, meristem initiation, and cell cycle modulation. Studies of related genes in other species link the family to dwarfism, spontaneous cell death, and resistance to multiple pathogens including Turnip Crinkle Virus and Botrytis cinerea.