Effects of elevated seawater pCO2 on gene expression patterns in the gills of the green crab, Carcinus maenas

ABSTRACT: In order to promote our understanding of the responses of green crab acid-base regulatory epithelia to high pCO2, Baltic Sea green crabs were exposed to a pCO2 of 400 Pa for 3 and 7 days after which posterior gills 7 and 9 were sampled. Gills were then subsequently screened for differentially expressed gene transcripts using a 4,462-feature microarray developed by Towle et al. 2010. For each experimental block (gill7-day3, gill7-day7, gill9-day3, gill9-day7), 6 replicate samples were obtained for control (= 39 Pa) and elevated (= 400 Pa) pCO2 exposed animals. Each microarray slide included 4 technical replicates for each transcript and was hybridized with one control pCO2 (labelled with AlexaFluor555) and one elevated pCO2 cDNA (labelled with AlexaFluor647). Lowess-normalized gene expression was calculated as the log2 of the ratio of the fluorescence intensity of the CO2-treatment cDNA to the fluorescence intensity of the control cDNA (log2 ratio=F635/F532).

ORGANISM(S): Carcinus maenas

SUBMITTER: Sandra Fehsenfeld 

PROVIDER: E-GEOD-28870 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress