Salt Stress response of salt-tolerant genotype Golden Promise compared to Maythorpe
Array-based genotyping and expression analysis of barley cv. Maythorpe and Golden Promise.
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View SamplesIn the present study, we explored the hypothesis that the fatty liver phenotype and associated gene expression changes associated with the specific deletion of the POR gene in adult mouse liver could be abrogated by supplementation of the mouse diet with the very long chain highly unsaturated fatty acids, arachidonic acid (C20:46), eicosapentaenoic acid (C20:53) and docosahexaenoic acid (C22:63). We expected the fatty liver phenotype would not be reduced by the polyunsaturated fatty acids linoleic (C18:26) or linolenic acid (C18:33), since these accumulated in the fatty livers of LivPORKO animals. This proved to be the case. However, we also made two surprising observations. First, control animals fed a diet enriched in PUFA had fatty livers and gene expression profiles similar to animals fed a lard diet, which was deficient in both PUFA and HUFA. Second, while a diet enriched in HUFA did result in reduced steatosis in livers of the LivPOKO animals, fat accumulation was still elevated relative to controls. Array analyses indicated most differences in gene expression were related to fatty acid metabolism and could explain differences in fat accumulation in LivPORKO livers with dietary treatment.
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Age, Specimen part
View SamplesPolycystic ovary syndrome (PCOS), the most common cause of anovulatory infertility, is characterized by increased ovarian androgen production, arrested follicle development, and is frequently associated with insulin resistance. These PCOS phenotypes are associated with exaggerated ovarian responsiveness to FSH and increased pregnancy loss. To examine whether the perturbations in follicle growth and the intrafollicular environment affects development of the mature PCOS oocyte, genes that are differentially expressed in PCOS compared to normal oocytes were defined using microarray analysis. This analysis detected approximately 8000 transcripts. Hierarchical clustering and principal component analysis revealed differences in global gene expression profiles between normal and PCOS oocytes. 374 genes had a statistically-significant increase or decrease in mRNA abundance in PCOS oocytes. A subset of these genes was associated with chromosome alignment and segregation during mitosis and/or meiosis, suggesting that increased mRNAs for these proteins may negatively affect oocyte maturation and/or early embryonic development. Of the 374 differentially expressed genes, 68 contained putative androgen receptor, retinoic acid receptor, and/or peroxisome proliferating receptor gamma binding sites, including 9 of the genes involved in chromosome alignment and segregation. These analyses demonstrated that normal and PCOS oocytes that are morphologically indistinguishable and of high quality exhibit different gene expression profiles. Furthermore, altered mRNA levels in the PCOS oocyte may contribute to defects in meiosis and/or mitosis which might impair oocyte competence for early development and therefore contribute to poor pregnancy outcome in PCOS.
Molecular abnormalities in oocytes from women with polycystic ovary syndrome revealed by microarray analysis.
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View SamplesPuberty unmasks or accelerates nephropathies, including the nephropathy of diabetes mellitus (DM). A number of cellular systems implicated in the kidney disease of DM interweave, forming an interdependent functional web. We performed focused microarray analysis to test the hypothesis that one or more genes in the transforming growth factor beta (TGF-) signaling system would be differentially regulated in male rats depending on the age of onset of DM.
Prepubertal onset of diabetes prevents expression of renal cortical connective tissue growth factor.
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View SamplesThree wheat genotypes were exposed to water stress and root tissue collected for expression analysis
Introgression of novel traits from a wild wheat relative improves drought adaptation in wheat.
Specimen part
View SamplesIn Arabidposis thaliana, the msh1 recA3 double mutant shows an extensive mitochondrial genome rearrangement and displays pronounced thermotolerance.
Extensive rearrangement of the Arabidopsis mitochondrial genome elicits cellular conditions for thermotolerance.
Specimen part
View SamplesSalt Stress response of salt-tolerant genotype FL478 compared to IR29
Comparing genomic expression patterns across plant species reveals highly diverged transcriptional dynamics in response to salt stress.
Specimen part
View SamplesThe soybean msh1 RNAi transgenic line show various growth phenotype. We use microarray analysis to characterize gene expression pattern for two of the phenotypes - variegation and stunted growth.
MutS HOMOLOG1 is a nucleoid protein that alters mitochondrial and plastid properties and plant response to high light.
Specimen part
View SamplesThe Arabidopsis msh1 mutant show various growth phenotype. We use microarray analysis to characterize gene expression pattern for two of the phenotypes - variegation and stunted growth.
The chloroplast triggers developmental reprogramming when mutS HOMOLOG1 is suppressed in plants.
Specimen part
View SamplesThe soybean msh1 RNAi transgenic line show various growth phenotype. We use microarray analysis to characterize gene expression pattern for two of the phenotypes - variegation and stunted growth.
MutS HOMOLOG1 is a nucleoid protein that alters mitochondrial and plastid properties and plant response to high light.
Specimen part
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