MT1 — Phaseolus vulgaris

Summary

PHAVU_010G009500, designated MT1 (also known as PvMT1, PvATMT-Q, PvATMT-2, PvLSR4, LSR4, PvMTA, ATMT1, MT-Q, MT-1, ATMT-Q, ATMT-2, and MT1A) on chromosome 10 of French bean (Phaseolus vulgaris), encodes a metallothionein family protein with copper and metal binding activity. This gene is associated with nitrogen fixation, nodulation, cell growth regulation, response to high light intensity, nuclear export, and response to copper. It is linked to cytosolic ribosome localization. Phenotypic associations include cadmium and copper accumulation, copper and zinc homeostasis, cadmium tolerance, metal accumulation, copper response, and leaf senescence. The gene is also associated with photosynthetic rate. Studies of related genes in other species link the family to root nodule number, copper sensitivity, net photosynthetic rate, cadmium concentration, transpiration rate, stem elongation, germination rate, leaf senescence, root length, drought tolerance, and salt tolerance.