CAB1 — Capsicum annuum

Summary

CaCAB1 (T459_35768) on pepper chromosome PGAv.1.6.scaffold17659 encodes a chlorophyll a-b binding protein of the light-harvesting complex (LHC) family, containing Chloro_AB-bd_pln and Chloroa_b-bind domains. The product is associated with chlorophyll binding, xanthophyll binding, and multiple activities in chlorophyll metabolism including chlorophyll b reductase, pheophytinase, and pheophorbide A oxygenase activities. CaCAB1 is associated with photosynthesis, particularly light harvesting in photosystems I and II, and localizes to the thylakoid membrane, LHCII, and photosystem I and II complexes. The gene has been connected to numerous agronomic traits including chlorophyll content and ratio, net photosynthetic rate, quantum yield, fruit color, leaf yellowing tolerance, bacterial blight disease resistance, and responses to high and low temperature stress, as well as leaf senescence, starch content, and flowering time.