CPH — Phaseolus vulgaris

Summary

PHAVU_005G023700 (PvCPH, also known as PvSMT1) on chromosome 5 of French bean encodes a sterol methyltransferase with tocopherol C-methyltransferase and 24-methylenesterol C-methyltransferase activities, belonging to the Erg6_SMT_methyltransf family. The gene is associated with sterol and vitamin E biosynthesis, steroidogenesis, and alkaloid metabolism. It has been linked to guard cell fate commitment and differentiation, stomatal development, embryo development ending in seed dormancy, and responses to low humidity. Associations also include cellulose biosynthesis, cell wall integrity, growth, fertility, root gravitropism, and immunity to Botrytis cinerea. The encoded protein localises to the chloroplast inner membrane, endoplasmic reticulum, plastid, nucleus, and plasmodesma. Studies of related genes in other species link the family to embryonic patterning defects, reduced fertility, and calcium hypersensitivity.