SGR2 — Cucumis melo

Summary

MELO3C008088.2 (CmSGR2) on melon chromosome 4 encodes a protein with a DDHD domain and phospholipase A1 activity, specifically glycerophospholipid phospholipase A1 and glycerophospholipase activities, and binds metals. The gene is associated with fruit ripening, detection of gravity, amyloplast organization, negative gravitropism, and geotropism. Its product localizes to the tonoplast, vacuole, plasmodesma, and cytoplasm. CmSGR2 is also linked to chlorophyll degradation, leaf senescence, and zygote asymmetric cell division. Studies of related genes in other species connect the SGR2 family to defective amyloplast sedimentation, abnormal gravitropism, and traits including yield, root morphology, leaf senescence, and arsenic concentration.