AP1 (PHAVU_003G039200) — Phaseolus vulgaris

Summary

PvAP1 (PHAVU_003G039200) on chromosome 3 of French bean encodes a MADS-box transcription factor with RNA polymerase II-specific DNA-binding activity, transcriptional co-regulator functions, and chromatin-related activities including histone binding and nucleosome array spacer activity. It is associated with floral whorl development, the vegetative-to-reproductive phase transition, inflorescence development, and regulation of double fertilization. The gene is linked to numerous fruit and flower traits, including legume fruit shattering, fruit yield, corolla and sepal morphology, carpel shape, floral organ size, petal number, and seed color. It is also associated with release of seed from dormancy, abscisic acid breakdown, regulation of proanthocyanidin anabolism, and responses to cytokinin and biotic stimuli. Related genes in other species are linked to floral meristem identity, petal and stamen formation, fruit development, pod shatter resistance, seed yield, and temperature-responsive flowering.