MADS22 — triticum aestivum

Summary

TRAESCS6B02G343900, designated MADS22 or TaAGL22 on bread wheat chromosome 6B, encodes a MIKC-type MADS-box transcription factor with a K-box domain. The product localises to the nucleus and exhibits RNA polymerase II transcription regulatory region sequence-specific DNA binding and protein dimerization activity. In wheat, MADS22 is associated with flowering time and vernalization response. It is linked to floral whorl structural organization, specification of carpel and floral organ identity, stamen formation, meristem determinacy, seed growth, integument development, and inhibition of brassinosteroid-mediated signalling. Associations also include spike exsertion, spike length, grain weight, grain yield, plant height, anthesis time, chlorophyll content, cold and drought tolerance, stripe rust, root length, protein content, and germination rate. Studies of related genes in other species link the family to grain shape, grain length, and grain number.