SPL — Medicago truncatula

Summary

MTR_7G022310, symbol SPL and also known as MtDPL1, encodes a protein with sphinganine-1-phosphate aldolase and glutamate decarboxylase activities, binding pyridoxal phosphate and calmodulin. It belongs to the group II amino acid decarboxylase and pyridoxal phosphate-dependent transferase families. The gene is associated with sphingolipid breakdown, glutamate breakdown, carboxylic acid metabolism, sucrose transport, lignin breakdown, flavonoid anabolism, signal transduction, sexual reproduction, and leaf development. It is linked to ER membrane, ER, and cytosol localisation. Associations with leaflet number and biomass yield have been recorded, as well as with stomatal response to ABA and fumonisin B1 resistance. Studies of related genes in other species link the family to dehydration stress response and fumonisin B1 sensitivity, as well as tolerance to necrotrophic fungus.