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
Project description:Using whole genome microarray (Affymetrix ATH1) we studied the transcriptional response of Arabidopsis thaliana to sulfometuron methyl (oust XP) 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
Project description:We set out to test the hypothesis that there is a sensing system in plants that perceives herbicides resulting in transcriptome changes that lead to the expression of genes encoding proteins that detoxify these molecules. We show that chlorsulfuron-treatment induces changes in the Marchantia polymorpha transcriptome. However, these transcriptome changes do not occur in target site resistant mutants treated with chlorsulfuron. Instead, we show that inactivation of the chlorsulfuron target, acetolactate synthase (ALS) (also known as acetohydroxyacid synthase (AHAS)), is required for the transcriptome response.
Project description:Staphylococcus aureus is a worldwide pathogen that colonizes the human nasal cavity and is a major cause of respiratory and cutaneous infections. In the nasal cavity, S. aureus thrives with high concentrations of nitric oxide (NO) produced by the innate immune effectors and has available for growth slow metabolizing free hexoses, such as galactose. Here, we have used deep sequencing transcriptomic analysis (RNA-Seq) and 1H-NMR to uncover how S. aureus grown on galactose, a major carbon source present in the nasopharynx, survives the deleterious action of nitric oxide. We observed that, like on glucose, S. aureus withstands high concentrations of NO when using galactose. However, most likely this is achieved through a distinct metabolism that relies on the increased production of amino acids, such as glutamate, threonine and branched-chain amino acids. Moreover, we found that under these conditions the α-acetolactate synthase (ALS) enzyme, which converts pyruvate into α-acetolactate, plays a role in the resistance of S. aureus to NO. However, the role of ALS is not restricted to galactose but also extends to cells growing on glucose. The results suggest that ALS prevents intracellular acidification, promoting the production of branched-chain amino acids and activation of the TCA cycle. We show that ALS contributes to the successful infection of murine macrophages. Furthermore, ALS is also shown to contribute to the resistance of S. aureus to beta-lactam antibiotics such as methicillin and oxacillin.
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. Experiment Overall Design: Surfactant (preference 0.25%) treated plants were used as carrier control group and EC50 concentration of imidazolinone was used as the herbicide treatment group. Each of the control and treatment group consisted of 3 biological replicates and each biological replicates comprised leaves from 10 individual plants. RNA was extracted at 24h post treatment to study the transcriptional alterations caused by the herbicide treatment.
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. Experiment Overall Design: Surfactant (preference 0.25%) treated plants were used as carrier control group and EC50 concentration of triazolopyrimidine was used as the herbicide treatment group. Each of the control and treatment group consisted of 3 biological replicates and each biological replicates comprised leaves from 10 individual plants. RNA was extracted at 24h post treatment to study the transcriptional alterations caused by the herbicide treatment.