LPA1 — Phaseolus vulgaris

Summary

PHAVU_001G205600, symbol LPA1, encodes a LOW PSII ACCUMULATION 1-like protein containing tetratricopeptide repeat (TPR) domains. In French bean (Phaseolus vulgaris) on chromosome 1, this gene is associated with photosystem II assembly, specifically the oxygen-evolving complex (OEC) assembly, and with regulation of gene expression, response to water, and nitric oxide storage. The product localises to the extracellular region and chloroplast. Annotated phenotypes include reduced PSII core subunits, especially the PSII dimer, and photosystem II assembly. Studies of related genes in other species link the LPA1 family to defects in PSII energy transfer, disturbed chloroplast thylakoid membrane structure, pale leaves with reduced growth, and increased sensitivity to oryzalin with shortened roots, as well as associations with root length and photochemical quenching.