is very diMcult to prevent, has done great damage to comrnercially grown grape vines and apple and pear trees, among others, Unfertunately, despite its importance, little is known about the molecular or cellular biology of this fungus. This study is a part of our attempt te better understand the signal transduction pathways mediating the vegetative incompatibility of Rosellinia. In order to iso...

ABSTRACT Mycelium of Phytophthora infestans, the causal agent of potato late blight, can initiate crop infections over successive years by overwintering in infected potato tubers that survive as seed in fields or within cull piles. This study used four different genotypes of P. infestans to evaluate the influence of freezing temperatures on survival of mycelium in vitro. Sporangium-free myceliu...

Objective: To isolate, evaluate and characterize the potential bioactive compound producing actinomycetes from soil sample of different location of Gwalior. Method: A total of 11 strains of actinomycetes were isolated from soil collected from different location of Gwalior. The isolates were characterized by using morphological and biochemical methods. 11 isolates were identified and subjected t...

To obtain rich in organic forms of zinc extracts of Lentinus edodes, possessing putative higher immunostimulating properties than actually used, mycelia were cultivated in zinc(II) enriched media. Culture media were enriched in zinc in concentration ranging from 0 to 90 microg mL(-1), added to the medium before inoculation. Total zinc concentration in submerged cultivated mycelial biomass has b...

In order to determine genetic variability among 33 isolates of Fusarium semitectum, morpho- logical and molecular studies were carried out. Isolates from different paddy fields in the north of Iran were separated from each other in four morphotype groups. The isolates showed a high level of variation in aerial mycelium, color of colony, number of septa and growth rate on potato dextrose agar (P...

The biodegradation of 2,4,6-trichlorophenol (2,4,6-TCP) by Phanerochaete chrysosporium was studied in batch systems. In experiments with mycelial suspension, the degradation of 2,4,6-TCP was found to occur in the absence of ligninase. Chloride ion was recovered in nearly stoichiometric amounts at the end of the process. The microorganism did not retain its degradation ability for more than 6 da...

Both fungal and bacterial processes occur in the formation of soil organic matter (Waksman, 1938), which is itself composed, at least in part, of living micro-organisms and those parts of their remains which are resistant to chemical and enzymic decomposition. A knowledge of the composition of micro-organisms should, therefore, help to shed some light on the constitution of soil organic matter....