Root nitrate response of Col-0 plants and tga1/tga4 mutant plants

ABSTRACT: Nitrate regulates plant growth and development and acts as a potent signal to control gene expression in Arabidopsis. Using an integrative bioinformatics approach we identified TGA1 and TGA4 as putative regulatory factors that mediate nitrate responses in Arabidopsis thaliana roots. We showed that both TGA1 and TGA4 mRNAs accumulate strongly and quickly after nitrate treatments in root organs in a tissue-specific manner. Phenotypic analysis of tga1/tga4 double mutant plants indicated that TGA1 and TGA4 are necessary for nitrate modulation of both primary and lateral root growth. Global gene expression analysis revealed that 97% of the genes with altered expression in tga1/tga4 double mutant plants are regulated by nitrate treatments indicating these transcription factors have a specific ro

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Jose Alvarez 

PROVIDER: E-GEOD-43011 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress