PPR — Phaseolus vulgaris

Summary

PHAVU_007G021100, designated PvPPR, encodes a pentatricopeptide repeat (PPR) protein on French bean chromosome 7. The product possesses endonuclease activity and binds pre-rRNA, single-stranded RNA, mRNA, and identical proteins. PvPPR is associated with chloroplast mRNA processing, group II intron splicing, photosystem I assembly, and immune response, and it localizes to the chloroplast stroma, mitochondria, and cytoplasm. Studies of related genes in other species link the family to seed weight, seed size, pod number, plant height, drought tolerance, pollen fertility, and heterosis. The family has also been connected to cytoplasmic male sterility and parasitic weed interactions.