Tissue culture-induced novel epialleles of a Myb transcription factor encoded by pericarp color1 in maize.

ABSTRACT: Plants regenerated from tissue culture often display somaclonal variation, that is, somatic and often meiotically heritable phenotypic variation that can result from both genetic and epigenetic modifications. To better understand the molecular basis of somaclonal variation, we have characterized four unique tissue culture-derived epialleles of the pericarp color1 (p1) gene of maize (Zea mays L.). The progenitor p1 allele, P1-wr, is composed of multiple head-to-tail tandemly arranged copies of the complete gene unit and specifies brick-red phlobaphene pigmentation in the cob glumes. The novel epialleles identified in progeny plants regenerated from tissue culture showed partial to complete loss of p1 function indicated by pink or colorless cob glumes. Loss of pigmentation was correlated wit

SUBMITTER: Rhee Y 

PROVIDER: S-EPMC2975300 | biostudies-literature | 2010 Nov

REPOSITORIES: biostudies-literature