ABC1 — Cicer arietinum

Summary

CaABC1 (LOC101489429) on chickpea chromosome 5 encodes a sigma factor with sigma-70 family domains and RNA polymerase sigma factor activity, enabling DNA-directed transcription initiation and cis-regulatory region binding. This gene is associated with chloroplast organization, photosystem stoichiometry adjustment, and responses to blue and red light. It is linked to tRNA metabolism, regulation of RNA anabolism, and cellular response to light stimulus. The encoded product localizes to the sigma factor antagonist complex and chloroplast. CaABC1 is associated with shoot dry weight, manganese concentration, root length, and root elongation, as well as cotyledon expansion, hypocotyl elongation, leaf variegation, photomorphogenesis, chloroplast biogenesis, and plastid-encoded tRNA expression. Related genes in other species are linked to gene transcription, pale green plants, and light response.