Plant metagenome
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA309460 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Morus alba L. Raw protein sequence reads and sequence
2024-02-08 | PXD049451 | iProX
Project description:The goal was to study the dfactionation of different lignocelullose (glucose, wheat bran, wheat straw) by Streptomyces coelicolor A3(2) and the corresponding production of secondary metabolites. This was performed by multi-omic experiment such as transcriptomic/metabolomic and leads to the production of new metabolites. For that, the strain Streptomyces coelicolor A3(2) was subjected to two carbon sources in triplicate (wheat bran and glucose as control). Enzymatic activities were studied at different times and the expression of CAZYmes was studied by transcriptomic in order to detect which enzymes are needed for each carbon source
2020-10-01 | E-MTAB-8971 | biostudies-arrayexpress
Project description:Fungi produce a wide range of enzymes that allow them to grow on diverse plant biomass. Wheat bran is a low-cost substrate with high potential for biotechnological applications. It mainly contains cellulose and (arabino)xylan, with starch, proteins, lipids and lignin as minor components. In this study, we dissected the regulatory network governing wheat bran degradation in Aspergillus niger. Deletion of genes encoding transcription factors involved in (hemi-)cellulose utilization (XlnR, AraR, ClrA and ClrB) individually and in combination significantly reduced production of polysaccharide-degrading enzymes, but retained substantial growth on wheat bran. Proteomic analysis suggested the ability of A. niger to grow on minor carbon components, such as starch, which was confirmed by the additional deletion of the amylolytic regulator AmyR. Growth was further reduced but not impaired, indicating that other minor components provide sufficient energy for residual growth, displaying the flexibility of A. niger, and likely other fungi, in carbon utilization.
2021-06-28 | PXD023338 | Pride
Project description:Plant biomass is the most abundant and renewable carbon source for many fungal species. The composition of biomass consists of about 40-45% cellulose, 20-30% hemicellulose, and 15-25% lignin and varies among plant species. In the bio-based industry, Aspergillus species and other fungi are used for the production of lignocellulolytic enzymes to pretreat agricultural waste biomass (e.g. wheat bran). In this study, we aimed to evaluate if it would be possible to create an Aspergillus strain that releases but does not metabolize hexoses from plant biomass. For this purpose, metabolic mutants were generated that were (partially) impaired in glycolysis, by deleting the hexokinase (hxkA) and glucokinase (glkA) genes. To prevent repression of enzyme production due to the accumulation of hexoses, strains were generated in which these mutations were combined with a mutation in creA, encoding the repressor involved in carbon catabolism. Phenotypic analysis revealed that growth of the ΔhxkAΔglkA mutant was reduced on wheat bran. However, hexoses did not accumulate during growth of the mutants on wheat bran, suggesting that glucose metabolism is re-routed towards alternative carbon catabolic pathways. Deletion of creA combined with blocking glycolysis resulted in an increased expression of pentose catabolic and phosphate pathway genes. This indicates that the reduced ability to use hexoses as carbon sources has resulted in a shift towards the pentose fraction of wheat bran as a major carbon source to support growth.
2018-02-26 | GSE94775 | GEO