Herbaspirillum seropedicae
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA35765 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| Other | ||||
| JAVDRJ01.dat.gz | Other | |||
| JAVDRJ01.fasta.gz | Fasta.gz | |||
| JAVDRJ01.master.dat | Other | |||
| JWZZ01.dat.gz | Other |
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Similar Datasets
Project description:Root-associated nitrogen-fixing bacterium
| PRJNA15704 | ENA
Project description:Herbaspirillum seropedicae is an endophytic bacterium that can fix nitrogen and promote a hormonal imbalance that leads to a plant growth-promoting effect when used as a microbial inoculant. Studies focused on mechanisms of action are crucial for a better understanding of the bacteria-plant interaction and optimization of plant growth-promoting response. The work aims to understand the underlined mechanisms responsible for the early stimulatory growth effects of the H. seropedicae inoculation in maize. To perform it, we combined transcriptomic and proteomic approaches with physiological analysis. The results obtained with the inoculation showed increased root biomass (233 and 253%) and shoot biomass (249 and 264%), respectively, for the fresh and dry mass of maize seedlings and increased green content and development. Omics data analysis for the positive biostimulation phenotype revealed that inoculation increases N-uptake and N-assimilation machinery through differential expressed nitrate transporters and amino acids pathway, as well carbon/nitrogen metabolism integration by the tricarboxylic acid cycle and the polyamines pathway. Additionally, phytohormone levels of root and shoot tissues increased in bacterium-inoculated-maize plants leading to feedback regulation by the ubiquitin-proteasome system. The early biostimulatory effect of H. seropedicae partially results from hormonal imbalance coupled with efficient nutrient uptake-assimilation and a boost in primary anabolic metabolism of carbon-nitrogen integrative pathways.
2023-03-11 | PXD038609 | Pride
Project description:H. seropedicae is a diazotrophic and endophytic bacterium that associates with economically important grasses promoting plant growth and increasing productivity. To identify genes related to bacterial ability to colonize and promote plant growth wheat seedlings growing hydroponically in Hoaglandâs medium were inoculated with H. seropedicae the bacteria and incubated for 3 days. mRNA from the bacteria present in the root surface and in the plant medium were purified, depleted from rRNA and used for RNA-seq profiling. RT-qPCR analyses were conducted to confirm regulation of selected genes. Comparison of RNA profile of bacteria attached to the root and planktonic revealed an extensive metabolic adaptation to the epiphytic life style.
2016-07-03 | E-MTAB-3646 | biostudies-arrayexpress
Project description:This project defines the exoproteome dynamics of Frankia coriariae, a nitrogen-fixing bacterium, in presence of three host plants. Frankia coriariae was treated with root exudates from compatible (Coriaria myrtifolia), incompatible (Alnus glutinosa) and non-actinorhizal (Cucumis melo) host plants.
2017-05-19 | PXD005980 | Pride
Project description:This project contributes to define the proteome dynamics of Frankia coriariae, a nitrogen-fixing bacterium, in presence of three host plants. Frankia coriariae was treated with root exudates from compatible (Coriaria myrtifolia), incompatible (Alnus glutinosa) and non-actinorhizal (Cucumis melo) host plants.
2017-05-19 | PXD005979 | Pride
Project description:Herbaspirillum seropedicae is a Betaproteobacterium capable of colonizing epiphytically and endophytically commercial grasses, promoting plant growth. In this study, we utilized RNA-seq to compare the transcriptional profiles of planktonic and maize root-attached H. seropedicae SmR1.
2015-02-28 | E-MTAB-3026 | biostudies-arrayexpress
Project description:The ability of bacteria to produce polyhydroxyalkanoates such as poly(3-hydroxybutyrate) (PHB) enables provision of a carbon storage molecule that can be mobilized under demanding physiological conditions. However, the precise function of PHB in cellular metabolism has not been clearly defined. In order to determine the impact of PHB production on global physiology, we have characterized the properties of a ΔphaC1 mutant strain of the diazotrophic bacterium Herbaspirillum seropedicae. The absence of PHB in the mutant strain not only perturbs redox balance and increases oxidative stress, but also influences the activity of the redox-sensing Fnr transcription regulators, resulting in significant changes in expression of the cytochrome c-branch of the electron transport chain. The synthesis of PHB is itself dependent on the Fnr1 and Fnr3 proteins resulting in a cyclic dependency that couples synthesis of PHB with redox regulation. Transcriptional profiling of the ΔphaC1 mutant reveals that the loss of PHB synthesis affects the expression of many genes, including approximately 30% of the Fnr regulon.
| S-EPMC5862806 | biostudies-literature
Project description:Herbaspirillum seropedicae are β-proteobacteria that establish as endophytes in various plants. They are able to consume diverse carbon sources, including hexoses and pentoses like D-xylose. D-xylose catabolism pathways have been described in some microorganisms, but databases of genes involved in these routes are limited. This is of special interest in biotechnology, considering that D-xylose is the second most abundant sugar in nature. Furthermore, it is found in some potential raw materials such as lignocellulosic biomass. In this work we present a study of D-xylose catabolism pathways in H. seropedicae strain Z69, using RNA-seq analysis and the subsequent study of phenotypes determined in targeted mutants in corresponding identified genes. G5B88_22805 gene, designated xylB, encodes a NAD+- dependent D-xylose dehydrogenase. Mutant Z69∆xylB was still able to grow on D-xylose, although at a reduced rate. This is due to expression of an L-arabinose dehydrogenase encoded by G5B88_05250 gene, and was thus able to use D-xylose as substrate. According to our results, H. seropedicae Z69 uses non-phosphorylative pathways to catabolize D-xylose. The lower portion of metabolism involves co-expression of two routes: Weimberg pathway that produces α-ketoglutarate and a novel pathway recently described that produces pyruvate and glycolate. This novel pathway seems to be essential since a mutant in the last step of this pathway, Z69∆G5B88_06410, was unable to grow on D‑xylose.
2021-03-01 | GSE162430 | GEO