PPH — Phaseolus vulgaris

Summary

PHAVU_011G013400, designated PvPPH, encodes a protein with a PPH_chloroplastic domain and an alpha/beta hydrolase fold, localised to chloroplast thylakoid membranes and stroma. The gene is associated with pheophytinase, chlorophyll b reductase, RCC reductase, and pheophorbide a oxygenase activities, as well as chlorophyll binding and Fe/S binding. PvPPH is linked to leaf senescence, chlorophyll content and degradation, stay-green phenotypes, and fruit and flower development. It has been connected to defence responses against bacteria and other organisms, regulation of programmed cell death and the hypersensitive response, and lesion-mimic leaf phenotypes. Associations also include seed maturation, germination, storability, root morphology, cytokinin sensitivity, and light intensity response. Studies of related genes in other species link the family to chlorophyll catabolism, cell death, and disease symptom development.