Transcription profiling of Arabidopsis wild-type and lwd1lwd2 double mutant to investigate the role of LWD1 and LWD2 in Arabidopsis photoperiod regulation

ABSTRACT: Transcriptome analysis has revealed a light-regulated WD (tryptophan and aspartate)-containing protein, LWD1. LWD1 and LWD2 share greater than 90% amino acid sequence homology. The lack of phenotype changes in the lwd1 or lwd2 single mutant implies that the proteins function redundantly. The lwd1lwd2 double mutant, however, has an early flowering phenotype under both long-day (LD) and short-day (SD) conditions. Functional complementation experiment revealed that LWDs are indeed responsible for the defect in photoperiod sensing in lwd1lwd2 double mutant plants. The expression of LWD1 exhibits a diurnal pattern and peaks before dawn. The period length of oscillator (CCA1, LHY, TOC1 and ELF4) and output (CCR2 and CAB2) genes in the lwd1lwd2 double mutant is significantly shorter than that in

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Shu-Hsing Wu 

PROVIDER: E-GEOD-11762 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress