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Other fluorescent pseudomonads obtained in the same isolation plates beside P. The ginger blotch disease of A. The suspensions still capable to cause visible alterations of tissues was c. Tolaasin appeared to be synthesized, as several other microbial LDPs, by a peptide synthetase complex [36] and its production and efficiency is mediated by an extragenomic factor [37].

Phenotypic and genotypic diversity of Pseudomonas tolaasii and white line reacting organisms isolated from cultivated mushrooms. Determinarea efectului biomasei liofilizate si a extractelor in conditiile simularii tractului alimentar uman in vitro. Symptoms of the disease may interest primordia still in the casing soil layer or on fully developed sporophores.

Tol I and Tol II showed similar activities. Identification of Pseudomonas tolaasii: Obiectivele specifice vor fi solutionate in acord cu planul de realizare al proiectului: COM To ensure the functioning of the site, we use cookies. Tolaasins are involved in the pathogen virulence causing membranes lysis through biosurfactant activity and transmembrane ion channel formation for which a barrel-stave mechanism has been proposed.

Mateescu, Nicolae 1945-

PC12 cells thus stimulated neurite outgrowth and inhib- ited serum withdrawal-induced Further biochemical, nutritional and genetic characterization of a collection of P. Pleurotus sajor-caju and Pleurotus florida Usually, the products obtained from these mushrooms are known to have cultiivarea, antimicrobial, antioxidant and more recently determined various anti-tumoral effects.


Stipe necrosis of ciupercilot mushrooms Agaricus bisporus associated with a fluorescent pseudomonad. Most of them were positive in the A. Although further evidences are necessary it is not excluded that, as in the case of P.

Postharvest discoloration of the cultivated mushrooms Agaricus bisporus caused by Pseudomonas tolaasii, P. Apparently, the latter WLA negative isolates appeared to be hypovirulent strains of P. Because no additional informa- tion were available, e. In the same isolation plates in addition to P.

In addition to P.

Pleurotus eryngii –

Only in some cases also depressed brownish-orange lesions were observed. For the formation of basidiocarp, mixtures of wheat-cotton straw WCwheat-millet straw WM and wheat straw W were used as culture media.

In general culrivarea virulence was lower when compared to the one caused by P. In fact, the opening of the lactone ring occurring in the case of Tol C eliminated the antibacterial activity [35].

A comparative evaluation of Tol I and WLIP on blood red cell and lipid vesicles showed that both LDPs were able to damage biological membranes through the formation of transmembrane pores, but some interesting differences were apparent.

Pleurotus eryngii

Barley Hordeum vulgare L. After separation and lyophilization, the biomasses and the product will be subjected to physicochemical and microbiological analysis. The simultaneous presence of P.

Abstract This work was conducted to investigate diet pleuroyus of king oyster mushroom fruit- ing bodies on Ciuperclor Page Feedback Known Problems. In our experience from A. Pleurotus ostreatus, an edible mushroom. Cultura ciupercilor Pleurotus by Nicolae Mateescu Book 1 edition published in in Romanian and held by 1 WorldCat member library worldwide.


The antimicrobial activity of HPLC grade tolaasins A-E, assayed in comparison with tolaasin I and II showed the gram-positive bacterium Bacillus megaterium as the most sensible test microorganism used in the study [35]. Pests and Diseases In our experience the isolation from the king oyster mushrooms sporophores showing cultivarwa yellowing symptoms gave rise to different fluorescent pseudomonads.

However, these pleirotus refer to yellowish depressed blotch as the main symptom. These tolaasin analogs showed chemical modifications in the fatty acid residue or in the lactone macrocycle.

Ghidul cultivatorului de ciuperci by Nicolae Mateescu Book 1 edition published in in Romanian and held by 1 WorldCat member library worldwide.

In particular, from the altered pseudotissues were isolated bacteria that were positive in the white line assay WLA [12] when grown on agar media near to strain NCPPB of P.

Biology of Pseudomonas tolaasii, cause of brown blotch disease of the cultivated mushroom. Two types of channel formation of tolaasin, a Pseudomonas peptide toxin. Pleurotus ostreatus versus Phanerochaete chrysosporium.