Stressor mRNA expression profiling of three different stressors in the water flea Daphnia magna

ABSTRACT: Microarray analyses were used to evaluate patterns of gene transcription following exposure of the waterflea Daphnia magna to two natural and one anthropogenic stressor. cDNA microarrays compiled of three life stage specific and three stressor-specific EST libraries, yielding 1734 different EST sequences, were used. We exposed the water flea Daphnia magna to three stressors known to exert strong selection in natural populations of this species i.e. a sublethal concentration of the pesticide carbaryl, infective spores of the endoparasite Pasteuria ramosa, and fish predation risk mimicked by exposure to fish kairomones. A total of 148 gene fragments were differentially expressed compared to the control. Most gene fragments were downregulated under stress (82.4% downregulation compared to 17.

ORGANISM(S): Daphnia magna

SUBMITTER: Mieke Jansen 

PROVIDER: E-GEOD-24322 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress