title: Tissue- and isoform-specific phytochrome regulation of light-dependent anthocyanin accumulation in Arabidopsis thaliana.
abstract: Phytochromes regulate light- and sucrose-dependent anthocyanin synthesis and accumulation in many plants. Mesophyll-specific phyA alone has been linked to the regulation of anthocyanin accumulation in response to far-red light in Arabidopsis thaliana. However, multiple mesophyll-localized phytochromes were implicated in the photoregulation of anthocyanin accumulation in red-light conditions. Here, we report a role for mesophyll-specific phyA in blue-light-dependent regulation of anthocyanin levels and novel roles for individual phy isoforms in the regulation of anthocyanin accumulation under red illumination. These results provide new insight into spatial- and isoform-specific regulation of pigmentation by phytochromes in A. thaliana.
authors: Department of Energy Plant Research Laboratory, Michigan State University, East Lansing, MI, USA.
authors: Sankalpi N
authors: SN
authors: Warnasooriya
authors: Katie J
authors: KJ
authors: Porter
authors: Beronda L
authors: BL
authors: Montgomery
mesh_terms: D000872:Anthocyanins / Q000378:metabolism*; D017360:Arabidopsis / Q000187:drug effects / Q000235:genetics / Q000378:metabolism* / Q000528:radiation effects*; D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism*; D004269:DNA, Bacterial / Q000235:genetics; D018506:Gene Expression Regulation, Plant / Q000187:drug effects / Q000528:radiation effects; D008027:Light; D008954:Models, Biological; D016254:Mutagenesis, Insertional / Q000187:drug effects / Q000528:radiation effects; D009154:Mutation / Q000235:genetics; D009928:Organ Specificity / Q000187:drug effects / Q000528:radiation effects; D051942:Phytochrome A / Q000235:genetics / Q000378:metabolism*; D030821:Plants, Genetically Modified; D020033:Protein Isoforms / Q000235:genetics / Q000378:metabolism; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D036226:Seedlings / Q000187:drug effects / Q000378:metabolism / Q000528:radiation effects; D013395:Sucrose / Q000494:pharmacology
chemical_list: D000872:Anthocyanins; D029681:Arabidopsis Proteins; D004269:DNA, Bacterial; C497973:PHYA protein, Arabidopsis; D051942:Phytochrome A; D020033:Protein Isoforms; D012333:RNA, Messenger; C036483:T-DNA; D013395:Sucrose