Project description:This project aimed to investigate the effects of glyphosate-based herbicide Roundup LB Plus on bacteria. For this, ten environmental strains of Salmonella enterica were exposed to the increasing concentrations of Roundup over several passages to obtain Roundup-resistant mutants. Four stable re-sequenced resistant mutants and their respective ancestors were characterized by global proteomics in the presence and absence of sub-inhibitory (1/4xMIC) concentrations of the herbicide. By comparing the proteomes of the Roundup-challenged ancestors with constitutive non-challenged ancestors, it became possible to deepen the understanding of how Roundup stress affects naïve bacteria. Similarly, comparing Mutants versus Ancestors in the absence of Roundup allowed to understand how Roundup resistance constitutively affects bacterial physiology, while the comparison of Roundup-challenged mutants versus constitutive mutants helped improve the understanding of the inducible responses in the resistant background.
Project description:We explored genomics, transcriptomics (mRNA and sRNA) and metabolomics of maize parent lines as predictors for agronomic performance of single-cross hybrids. Our results indicate that the merit of any individual predictor is trait dependent and that combining predictors has advantages for application across traits. We conclude that downstream “omics” can complement genomics for hybrid prediction and thereby contribute to more efficient selection of hybrid candidates.
Project description:Using whole genome microarray (Affymetrix ATH1) we studied the transcriptional response of Arabidopsis thaliana to glyphosate (Roundup Original) herbicde that inhibits 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) enzyme and thus disrupts aromaticamino acid biosynthesis. Few genes related to defense and secondary metabolism were altered. Keywords: 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) inhibiting herbicide stress response
Project description:There is an ongoing debate on the potential toxicity of genetically modified food. The ability of rodent feeding trials to assess the potential toxicity of these products is highly debated since a 2-year study in rats fed NK603 Roundup-tolerant genetically modified maize, treated or not with Roundup during the cultivation, resulted in anatomorphological and blood/urine biochemical changes indicative of liver and kidney structure and functional pathology. We used microarrays to detail the alterations in gene expression profiles associated with the consumption of a Roundup-tolerant genetically modified maize (NK603) sprayed or unsprayed with a Roundup herbicide from these same animals.
Project description:There is an ongoing debate on the potential toxicity of genetically modified food. The ability of rodent feeding trials to assess the potential toxicity of these products is highly debated since a 2-year study in rats fed NK603 Roundup-tolerant genetically modified maize, treated or not with Roundup during the cultivation, resulted in anatomorphological and blood/urine biochemical changes indicative of liver and kidney structure and functional pathology. We used microarrays to detail the alterations in gene expression profiles associated with the consumption of a Roundup-tolerant genetically modified maize (NK603) sprayed or unsprayed with a Roundup herbicide from these same animals.
Project description:Using whole genome microarray (Affymetrix ATH1) we studied the transcriptional response of Arabidopsis thaliana to triazolopyrimidine (FirstRate) herbicde that inhibits acetolactate synthase (ALS) enzyme and thus disrupts branched chain amino acid biosynthesis. A number of genes related to amino acid, protein metabolism, growth, regulatory networks, respiratory pathways, stress, defense and secondary metabolism were altered. Keywords: Acetolactate synthase (ALS) inhibiting herbicide stress response
Project description:Using whole genome microarray (Affymetrix ATH1) we studied the transcriptional response of Arabidopsis thaliana to imidazolinone (Arsenal) herbicde that inhibits acetolactate synthase (ALS) enzyme and thus disrupts branched chain amino acid biosynthesis. A number of genes related to amino acid, protein metabolism, growth, regulatory networks, respiratory pathways, stress, defense and secondary metabolism were altered. Keywords: Acetolactate synthase (ALS) inhibiting herbicide stress response
Project description:Using whole genome microarray (Affymetrix ATH1) we studied the transcriptional response of Arabidopsis thaliana to primisulfuron (Beacon) herbicde that inhibits acetolactate synthase (ALS) enzyme and thus disrupts branmched chain amino acid biosynthesis. A number of genes related to amino acid, protein metabolism, growth, regulatory networks, respiratory pathways, stress, defense and secondary metabolism were altered. Keywords: Acetolactate synthase (ALS) inhibiting herbicide stress response
