High-fluence blue light stimulates transcription from a higher plant chloroplast psbA promoter expressed in a cyanobacterium, Synechococcus (sp. strain PCC7942).
High-fluence white and blue light, but not red light, enhanced transcription of the barley chloroplast psbA promoter when heterologously expressed as a lacZ transcriptional fusion in the cyanobacterium, Synechococcus sp. strain PCC7942. Analysis of Arabidopsis thaliana phytochrome mutants, phyAphyB and hy2, indicated that a distinct blue phototransduction pathway stimulates psbA expression. The evolutionary implications of these findings are discussed.
Department of Plant Molecular Physiology, University of Hawaii at Manoa, Honolulu, HI 96822, USA.
N F
NF
Tsinoremas
A
A
Kawakami
D A
DA
Christopher
D017360:Arabidopsis / Q000235:genetics; D019677:Artificial Gene Fusion; D001483:Base Sequence; D002736:Chloroplasts / Q000235:genetics*; D000458:Cyanobacteria / Q000235:genetics*; D018744:DNA, Plant / Q000235:genetics; D019143:Evolution, Molecular; D015870:Gene Expression; D001467:Hordeum / Q000235:genetics; D007763:Lac Operon; D008027:Light; D008969:Molecular Sequence Data; D009154:Mutation; D045322:Photosynthetic Reaction Center Complex Proteins / Q000235:genetics*; D045332:Photosystem II Protein Complex; D011401:Promoter Regions, Genetic; D014158:Transcription, Genetic / Q000528:radiation effects
D018744:DNA, Plant; D045322:Photosynthetic Reaction Center Complex Proteins; D045332:Photosystem II Protein Complex