Assessing the effectiveness of Byssochlamys nivea and Scopulariopsis brumptii in pentachlorophenol removal and biological control of two Phytophthora species.

Bioremediation and biological-control by fungi have made tremendous strides in numerous biotechnology applications. The aim of this study was to test Byssochlamys nivea and Scopulariopsis brumptii in sensitivity and degradation to pentachlorophenol (PCP) and in biological-control of Phytophthora cinnamomi and Phytophthora cambivora. B.

Biosorption of pentachlorophenol by Anthracophyllum discolor in the form of live fungal pellets.

Pentachlorophenol (PCP) is an extremely dangerous pollutant for every ecosystem. In this study we have detected how PCP concentration and pH levels can influence PCP adsorption by Anthracophyllum discolor in the form of live fungal pellets. PCP adsorption was evaluated after 24 hours in KCl 0.

Flufuran, an antifungal 3,5-disubstituted furan produced by Aspergillus flavus link.

A 3,5-disubstituted furan, named flufuran, was isolated from a culture filtrate of a strain of Aspergillus flavus obtained from a chestnut compost created in the same orchard. Flufuran was identified by spectroscopic methods, and its structure was confirmed through the preparation of some key derivatives, also used to test the antifungal activity. At a concentration of 0.

Isolation, characterization and structure-elicitor activity relationships of hibernalin and its two oxidized forms from Phytophthora hibernalis Carne 1925.

Three alpha-elicitins, named hibernalin1, hibernalin2 and hibernalin3 (hib1, hib2 and hib3, respectively), were isolated by reverse phase-low-pressure liquid chromatography from culture filtrates of Phytophthora hibernalis Carne 1925, the causal agent of citrus lemon brown rot. Hib1 proved to be identical to syringicin previously isolated from culture filtrates of Phytophthora syringae. Hib2 and hib3 shared the same primary structure with hib1, but contained, at position 50, Met sulphoxide or sulphone, respectively.

First Report of Phytophthora insolita and P. inflata on Rhododendron in Ohio.

During August 2003, we conducted a statewide survey of rhododendrons to determine if Phytophthora ramorum was present in Ohio ornamental nurseries. In total, 240 samples were randomly collected in 12 nurseries throughout Ohio from rhododendrons showing foliar necrotic lesions and twig dieback symptoms. The samples yielded 51 Phytophthora spp.

Production, characterization, and effects on tomato of humic acid-like polymerin metal derivatives from olive oil mill waste waters.

The dark polymeric organic fraction rich in potassium recovered from olive oil mill waste waters (OMWW) and named polymerin and the potassium salified deglycosylated polymerin derivative (K-SDpolymerin) were easily transformed into their metal derivatives by saturation with various metals, including Na, Cu, Zn, Mn, Fe, and Al. Saturated metal polymerins were characterized by diffuse reflectance infrared Fourier transform spectroscopy and atomic absorption spectrometry. Tests on tomato plants of the various polymerins showed that only the soluble polymerin, K-SDpolymerin, and the insoluble Mn-SDpolymerin were significantly toxic.