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Pseudomonas putida
About: Pseudomonas putida is a research topic. Over the lifetime, 6854 publications have been published within this topic receiving 230572 citations.
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TL;DR: In this article, a symbiotic microalgal-bacterial system may be an optional technology for wastewater treatment, and a co-immobilization of a bacterium isolated from a municipal wastewater treatment plant ( Pseudomonas putida ) and a microalgae Chlorella vulgaris was used in the study of cell growth and nutrient removal during wastewater treatment under batch and continuous culture conditions.
107 citations
01 Jan 2004-Progress in the chemistry of organic natural products. Progrès dans la chimie des substances organiques naturelles
TL;DR: Pseudomonas is the germ responsible for most hospital infections, being increasingly resistant against all common antibiotics, and as a warfare agent proposed to destroy the protective layers of aircraft against radar detection.
Abstract: No other bacterial genus has been brought into context with so many different aspects of public interest as that of Pseudomonas (439): Pseudomonas aeruginosa is the germ responsible for most hospital infections (40a) being increasingly resistant against all common antibiotics (180,394); a Pseudomonas sp. is blamed to be the true culprit for the production of tetrodotoxin, the deadly poison of the Japanese pufferfish (521); Pseudomonas (Ralstonia) solanacearum destroys crops and is so dangerous that a special periodical, the “Bacterial Wilt Newsletter”1 was founded in order to deal with this problem; other Pseudomonas spp. increase the harvest of important nutritional plants (366); Pseudomonas tolaasii makes cultivated mushrooms unmarketable (468); Pseudomonas syringae besides infecting many plants helps in the Alps to prolong the skiing season (298); Pseudomonas putida assists us by degrading our toxic waste (i.e. aromatic and chlorinated compounds) (16,83,306), Pseudomonas chlororaphis attacks plastics, especially polyurethanes, and that not only in waste dumps (207) but also as a warfare agent proposed to destroy the protective layers of aircraft against radar detection;2 and the enzyme systems of Pseudomonas putida are used for stereospecific organic syntheses(209).
107 citations
Dissertation•
01 Jan 2005
TL;DR: Results of the current study provide a new experimental evidence that composition of the growth media influences transcription from the pheBA promoter by modulating the expression of the p heB-encoded catechol 1,2-dioxygenase which degrades catechols to CCM at the level of synthesis of this enzyme.
Abstract: During growth of Pseudomonas in nutritionally rich environment many catabolic operons are repressed by physiological control mechanisms. In the current report we have studied mechanisms that down-regulate transcription from the CatR- controlled promoter of phenol degradation genes pheBA in P. putida when bacteria are growing in the presence of amino acids. We found that the amount of cis,cis-muconate (CCM) which is an effector molecule for the CatR regulator and an intermediate of the catechol degradation pathway in P. putida, limits transcrip- tion from the pheBA promoter. Comparison of expression profiles from the pheBA promoter in P. putida wild type strain PaW85 and in its catB mutant derivative unable to degrade CCM demonstrated that cellular concentration of CCM is a limiting factor determining the level of transcription from the pheBA promoter. Although the amount of CCM is probably always below the levels that would allow maximal rate of transcription from the pheBA promoter, the limitation became most significant in rich medium-grown cells. Results of the current study provide a new experimental evidence that composition of the growth media influences transcription from the pheBA promoter by modulating the expression of the pheB-encoded catechol 1,2-dioxygenase which degrades catechol to CCM at the level of synthesis of this enzyme. To our knowledge, this is a first time to show that physiological control of catabolic operons in
107 citations
TL;DR: Results demonstrate multiplicity of catabolic types of degradation of phenol and p-cresol and the existence of characteristic assemblages of species and specific genotypes among the strains isolated from the polluted river water.
107 citations
TL;DR: Using stopped flow techniques, it is shown that essentially all of the iron in the P. putida enzyme is catalytically active, which suggests that the minimal catalytic unit of all non-heme iron intradiol dioxygenases is an (alpha beta Fe+3) structure.
107 citations