CAB1 — Cicer arietinum

Summary

LOC101496011 (CaCAB1) on chickpea chromosome 6 encodes a chlorophyll a-b binding protein, a component of the light-harvesting complexes. The protein possesses chlorophyll binding, xanthophyll binding, pheophytinase, RCC reductase, Chl b reductase, and pheophorbide A oxygenase activities, and is localized to the thylakoid membrane, photosystem I and II, and the LHCII complex. CaCAB1 is associated with photosynthesis, light harvesting in both photosystems, thylakoid membrane organization, and responses to high light, oxidative stress, and temperature extremes. It has been linked to agronomically important traits including photosynthetic rate, drought and salt tolerance, disease tolerance, leaf senescence, flowering time, root morphology, starch content, and plant growth and development. Related genes in other species are linked to thylakoid biogenesis, leaf variegation, and non-photochemical quenching.