Unknown,Transcriptomics,Genomics,Proteomics

Dataset Information

0

Microarray analysis of Arabidopsis Col-0 and catalase 2 mutant define interactions between CO2, daylength and H2O2


ABSTRACT: Growth daylength, ambient CO2 level, and intracellular hydrogen peroxide (H2O2) availability all impact plant function by modulating signalling pathways, but interactions between them remain unclear. Using a whole-genome transcriptomics approach, we exploited the conditional photorespiratory nature of the catalase-deficient cat2 mutant to identify gene expression patterns responding to these three factors. Arabidopsis Col-0 and cat2 grown for 5 weeks in high CO2 in short days (SD) were transferred to air in SD or long days (LD), and microarray analysis was performed. Of more than 500 genes differentially expressed in Col-0 between high CO2 and transfer to air in SD, the response of about one-third was attenuated by transfer to air in LD. H2O2-responsive genes in cat2 were highly dependent on daylength. The majority of H2O2-induced genes were more strongly up-regulated after transfer to air in SD than to LD, while a smaller number showed an opposing pattern. Responses of other H2O2-dependent genes indicate redox-modulation of the daylength control of fundamental cell processes. The overall analysis provides evidence that (1) CO2 level modulates stress-associated gene expression; (2) both CO2 and H2O2 interact with daylength and photoreceptor signalling pathways; and (3) cellular signalling pathways may be primed to respond to increased H2O2 in a daylength-determined manner. Two genotypes x five conditions experiment, including Arabidopsis Col0WT and cat2-1 plants grown in soil for 5 weeks in a 8h light/16h dark (short day) regime at high CO2 concentration (3000 ppm CO2) and subsequently transferred to air (400 ppm CO2) in a short day or long day (16h light/8h dark) regime for 2 and 4 days. Three biological replicates were used that consist each of a pool of two leaves from different plants. Each sample was hybridized to one Genechip® Arabidopsis ATH1 Genome Array (Affymetrix).

ORGANISM(S): Arabidopsis thaliana

SUBMITTER: Joke Allemeersch 

PROVIDER: E-GEOD-27985 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

altmetric image

Publications

Day length is a key regulator of transcriptomic responses to both CO(2) and H(2)O(2) in Arabidopsis.

Queval Guillaume G   Neukermans Jenny J   Vanderauwera Sandy S   Van Breusegem Frank F   Noctor Graham G  

Plant, cell & environment 20110706 2


Growth day length, CO(2) levels and H(2)O(2) all impact plant function, but interactions between them remain unclear. Using a whole-genome transcriptomics approach, we identified gene expression patterns responding to these three factors in Arabidopsis Col-0 and the conditional catalase-deficient mutant, cat2. Plants grown for 5 weeks at high CO(2) in short days (hCO(2)) were transferred to air in short days (SD air) or long days (LD air), and microarray data produced were subjected to three ind  ...[more]

Similar Datasets

2012-03-07 | GSE27985 | GEO
2014-09-30 | E-GEOD-54534 | biostudies-arrayexpress
2016-06-10 | E-GEOD-77171 | biostudies-arrayexpress
2016-06-10 | E-GEOD-77170 | biostudies-arrayexpress
2016-06-10 | E-GEOD-66365 | biostudies-arrayexpress
2016-07-28 | E-GEOD-77017 | biostudies-arrayexpress
2016-06-10 | E-GEOD-81516 | biostudies-arrayexpress
2013-11-02 | E-GEOD-52013 | biostudies-arrayexpress
2016-06-10 | E-GEOD-80158 | biostudies-arrayexpress
2016-06-10 | GSE77171 | GEO