PPH — Phaseolus vulgaris

Summary

PvPPH (PHAVU_005G035700) in French bean (Phaseolus vulgaris) on chromosome 5 encodes a protein with an alpha/beta hydrolase fold and chloroplastic PPH domain, annotated with pheophytinase, RCC reductase, Chl b reductase, and pheophorbide A oxygenase activities, along with chlorophyll, mRNA, and protein binding, and Fe/S binding. It is associated with PSII-associated light-harvesting complex II catabolic process, response to fructose, regulation of hypersensitive response and programmed cell death, fruit and flower development, and defense responses to bacteria and other organisms. The gene is linked to traits including leaf yellowing tolerance, hybrid incompatibility, stem senescence, chlorophyll content, leaf senescence, disease tolerance, seed maturation, and root morphology, as well as phenotypes such as stay-green in darkness, chlorophyll retention and breakdown, lesion-mimic leaves, premature flower death, seed abortion, and bacterial pathogen resistance. It localizes to chloroplast thylakoid membrane, inner membrane, envelope, stroma, apoplast, mitochondria, and cytosol. Studies of related genes in other species link the family to chlorophyll catabolism, cell death, and stay-green phenotypes.