AP1 (PSAT4G122720) — Pisum sativum

Summary

PsAP1 (AP1) on garden pea chromosome 4LG4 encodes a MADS-box transcription factor with DNA-binding, chromatin-binding, and transcriptional co-regulator activities. It is associated with floral whorl development, regulation of double fertilization, release of seed from dormancy, and the vegetative-to-reproductive phase transition. The gene has been connected to numerous traits including flower and fruit morphology, seed color, fruit shattering, inflorescence development, leaf margin serration, boron and potassium sensitivity, and iron content. It is linked to floral meristem identity, fruit development, inflorescence determinacy, and fruit valve development. Studies of related genes in other species connect the family to petal and stamen identity, seed yield, leaf longevity, temperature-responsive flowering, and proanthocyanidin accumulation.