ABSTRACT: Deciphering characterization of seasonal variation in microbial communities of marine ranching: diversity, co-occurrence network patterns, and assembly processes
Project description:Deciphering characterization of seasonal variation in microbial communities of marine ranching: diversity, co-occurrence network patterns, and assembly processes
Project description:To seek whether seasonal variation in environmental particulate matter composition affected the global gene response patterns in cultured human cells representing pulmonary and systemic vascular targets. We used microarrays to detail the global program of gene expression affected on different cells type by different seasonal collections of Ambient Particulate Matter.
2011-12-02 | GSE18593 | GEO
Project description:Seasonal succession of microbial community co-occurrence patterns and community assembly mechanism in coal mining subsidence lakes
Project description:Direct comparison of the transcriptional patterns between male and female in the digestive gland of a natural population of the marine mussel Mytilus galloprovincialis sampled in the Bizerta Lagoon, Tunisia, across November 2007 -February March 2008 (four stages, winter peak). Background: Seasonal environmental changes may affect the physiology of Mytilus galloprovincialis (Lam.), an intertidal filter-feeder bivalve occurring commonly in Mediterranean and Atlantic coastal areas. We investigated seasonal variations in relative transcript abundance of the digestive gland and the Digestive gland (gonads) of males and females. To identify gene expression trends, we used a medium-density cDNA microarray (1.7 K probes) in dual-color competitive hybridization analyses. Results: Hierarchical clustering of digestive gland microarray data showed two main branches, distinguishing profiles associated with the “hot” months (May–August) from the other months. Genes involved in chitin metabolism, associated with mussel nutrition and digestion, showed higher expression during summer. Moreover, we found different gene expression patterns in the digestive glands of males and females during the four stages of mussel gonadal development. Microarray data from gonadal transcripts also displayed clear patterns during the different developmental phases with peak relative mRNA abundance at the ripe phase (stage III) for both sexes. Conclusion: These data showed a clear temporal pattern in gene expression profiles of mussels sampled over an annual cycle. Physiological response to thermal variation, food availability, and reproductive status across months may contribute to variation in gene expression.