ArticleEnvironmental microbiology2007
Exploration of intraclonal adaptation mechanisms of Pseudomonas brassicacearum facing cadmium toxicity.
Article in Environmental microbiology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
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Who cites it
21 citing papers in PubMed, 46 citations in OpenAlex.
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- Phosphorus-solubilizing bacteria improve the growth of Nicotiana benthamiana on lunar regolith simulant by dissociating insoluble inorganic phosphorus.Communications biology · 2023Article
- Proteomic analysis to unravel the biochemical mechanisms triggered by Bacillus toyonensis SFC 500-1E under chromium(VI) and phenol stress.Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2023Review
- Colonized Niche, Evolution and Function Signatures ofFoods (Basel, Switzerland) · 2021Article
- High-quality draft genome sequence of Pseudomonas aeruginosa san ai, an environmental isolate resistant to heavy metals.Extremophiles : life under extreme conditions · 2019Article
- Black soldier fly larvae (Hermetia illucens) strengthen the metabolic function of food waste biodegradation by gut microbiome.Microbial biotechnology · 2019Article
- Metabolic Insights Into the Effects of Nutrient Stress onFrontiers in molecular biosciences · 2019Article
- Cadmium specific proteomic responses of a highly resistantRSC advances · 2018Article
- Identification of key proteins and pathways in cadmium tolerance of Lactobacillus plantarum strains by proteomic analysis.Scientific reports · 2017Article
- Mutability in Pseudomonas viridiflava as a programmed balance between antibiotic resistance and pathogenicity.Molecular plant pathology · 2015Article
- Effect of long-term starvation in salty microcosm on biofilm formation and motility in Pseudomonas aeruginosa.World journal of microbiology & biotechnology · 2013Article
- Dynamic energy budget approach to modeling mechanisms of CdSe quantum dot toxicity.Ecotoxicology (London, England) · 2013Article
- Pseudomonas biofilm matrix composition and niche biology.FEMS microbiology reviews · 2012Review
- Phenotypic switching in Pseudomonas brassicacearum involves GacS- and GacA-dependent Rsm small RNAs.Applied and environmental microbiology · 2012Article
- Genome-wide transcriptional response of the archaeon Thermococcus gammatolerans to cadmium.PloS one · 2012Article
- Modeling physiological processes that relate toxicant exposure and bacterial population dynamics.PloS one · 2012Article
- Article
- Cellular electron microscopy imaging reveals the localization of the Hfq protein close to the bacterial membrane.PloS one · 2009Article
- Exopolymer biosynthesis and proteomic changes of Pseudomonas sp. HK-6 under stress of TNT (2,4,6-trinitrotoluene).Current microbiology · 2008Article
Corrections and comments
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Authors and funding
8 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Pseudomonas brassicacearum forms phenotypic variants in vitro as well as in planta during root colonization under natural conditions, leading to subpopulations (phase I and II cells) that differ in colony morphology and production of exoenzymes/secondary metabolites. The maximal concentration of cadmium allowing both variants growth was 25 muM; however, phase II cells accumulated fivefold higher Cd than phase I cells, even though both variants showed the same growth rate and kinetics, comprising a long stasis period (50 h). The whole transcriptome analysis of both variants in response to Cd was investigated using the home-made DNA microarrays. This analysis revealed completely different adaptation mechanisms developed by each variant to withstand and grow in the presence of the toxic. A re-organization of the cell wall to limit Cd entrance was noticed for phase I cells, as genes encoding levan exopolymers were downregulated at the expense of an upregulation of genes encoding alginate, and an upregulation of transporters such as cadA, and a downregulation of copper transporters. Phase II cells were unable to prevent Cd entrance and recruited genes under the control of oxyR and soxR regulation to face osmotic and oxidant stresses generated by Cd. Putrescine and spermidine metabolism appeared to play a central role in Cd tolerance. Microarray data were validated by biological analyses such as motility, oxidative stress assay, metabolite profiling with ICR-FT/MS and UPLC, capillary electrophoresis analysis of biogenic amines.
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