Project description:Factorial Microarray Analysis of Zebra Mussel (Dreissena polymorpha) Adhesion Process under the Impact of Multiple Environmental Factors The expression profiles of the zebra mussel byssus unique genes in our cDNA microarray can be influenced by multiple factors. Three environmental factors plus adhesion status were considered as four main factors in this study.
Project description:Factorial Microarray Analysis of Zebra Mussel (Dreissena polymorpha) Adhesion Process under the Impact of Multiple Environmental Factors The expression profiles of the zebra mussel byssus unique genes in our cDNA microarray can be influenced by multiple factors. Three environmental factors plus adhesion status were considered as four main factors in this study. Two different levels in each factor were created, therefore, a 2x2x2x2 factorial experimental design was made by sixteen treatment groups with four biological replicates in each group. There were 32 dual-channel microarray slides included in this study and the effects of main factors on gene expression profiles as well as the two-way, three-way, and four-way interactions of the main factors were analyzed. Factors: temperature, water agitation, oxygen level, and adhesion status
Project description:The zebra mussel is present in Spain since early 2000,s, when it was discovered in the lower part of the Ebro river. To study the gene expression pattern of different populations of zebra mussel a long the Ebro River we use a custom microarray developed in our laboratory, using 4057 publicly available DNA sequences from Dreissena polymorpha and other related genera. Also it was used an external sampling site located in Sitjar Dam, about 200km form the Ebro river. Transcriptome profiles were analysed using the gills of individuals collected in the same period (20-23 March) to diminish seasonal effects. A total of 755 transcripts changed significantly their mRNA levels among the sites of the study (ANOVA p<0.01, fc M-BM-11.5). Genes encoding for xenobiotic, energetic and calcium metabolism and cell proliferation were those showing the highest differences among populations. Geographical origin appeared as the major driver of the differences among the studied populations, as the transcriptomic profiles from four populations collected within a radius of few km around the Flix factory clustered together and separated from those from other distant populations both upstream the Ebro River or in the Sitjar dam. Differences on gene expression pattern were measure in gills of Dreissena polymorpha in different populations in five populations along the Ebro river and one population in Sitjar dam. The collection of samples were done during Srping (March). For the microarray it was used 2 replicates of each sites of the study.
Project description:To analyze the different pattern of expression among tissues in D. polymorpha it was used acustom microarray designed in our laboratory using 4057 publicly availabe DNA sequences from Dreissena and other realted genera. Transcriptome profiles were analyszed using gills, digestive gland, gonad and half a body of adult zebra mussel and larvae 24 h pf. The samples analyzed in the microarray were not treated in order to detect the normal pattern of expression in each tissue. A total of 221 transcripts changed significantly their mRNA levels in the different tissues (ANOVA p<0.01, fc ±1.5). The results showed a clear separation on transcriptome profiles between samples with the main changes in gills, larvae and half a body.
Project description:The zebra mussel is present in Spain since early 2000,s, when it was discovered in the lower part of the Ebro river. To study the gene expression pattern of different populations of zebra mussel a long the Ebro River we use a custom microarray developed in our laboratory, using 4057 publicly available DNA sequences from Dreissena polymorpha and other related genera. Also it was used an external sampling site located in Sitjar Dam, about 200km form the Ebro river. Transcriptome profiles were analysed using the gills of individuals collected in the same period (20-23 March) to diminish seasonal effects. A total of 755 transcripts changed significantly their mRNA levels among the sites of the study (ANOVA p<0.01, fc ±1.5). Genes encoding for xenobiotic, energetic and calcium metabolism and cell proliferation were those showing the highest differences among populations. Geographical origin appeared as the major driver of the differences among the studied populations, as the transcriptomic profiles from four populations collected within a radius of few km around the Flix factory clustered together and separated from those from other distant populations both upstream the Ebro River or in the Sitjar dam.
Project description:To analyze the different pattern of expression among tissues in D. polymorpha it was used acustom microarray designed in our laboratory using 4057 publicly availabe DNA sequences from Dreissena and other realted genera. Transcriptome profiles were analyszed using gills, digestive gland, gonad and half a body of adult zebra mussel and larvae 24 h pf. The samples analyzed in the microarray were not treated in order to detect the normal pattern of expression in each tissue. A total of 221 transcripts changed significantly their mRNA levels in the different tissues (ANOVA p<0.01, fc ±1.5). The results showed a clear separation on transcriptome profiles between samples with the main changes in gills, larvae and half a body. Non treated animals were use to study different patterns of gene expression in different tissues using gills, digestive gland, gonad from both sexes, and half a body as well as larvae. It was used 2 replicate for each tissue.