to identify trichoderma isolates for potential biocontrol of crown and root rot inpistachio, 100 samples of soil taken from rhizosphere, fertilizer channels and from soil surfacewere collected from kerman, yazd, khorasane razavi and semnan provinces during 2009-2011. overall, 32 isolates of trichoderma harzianum were obtained mostly from rhizospheresoil using either general or special environme...

When the mycoparasitic, biocontrol fungus Trichoderma harzianum was allowed to grow on nylon fibers treated with concanavalin A or Sclerotium rolfsii lectin, it coiled around the nylon fibers and produced hooks in a pattern similar to that observed with the real host hyphae. The incidence of interaction between T. harzianum and S. rolfsii lectin-treated fibers was significantly higher than that...

Fungicides viz., Benomyl, TopsinM, Carbendazim and Cuprocaffro were used at different concentrations i.e., 0, 1, 10, 100, 1000 and 10,000 ppm a.i. to evaluate Trichoderma species viz. T. harzianum, T. pseudokoningii, T. longibrachiatum, T. viride for tolerance to fungicides. Topsin-M and Carbendazim were the most effective fungicides that inhibit the growth of Trichoderma species even at low co...

Peptaibols are linear alpha-aminoisobutyric acid-containing peptide antibiotics originating from soil fungi mainly of the genus Trichoderma and biosynthesized in complex mixtures of closely related analogues by a polyenzymatic pathway. Addition of amino acids such as alpha-aminoisobutyric acid (Aib), glutamic acid or arginine, to the fermentation medium of two Trichoderma strains, T. harzianum ...

Phylloplane fungi of Chlorophytum tuberosum were screened for their antagonistic activities against Colletotrichum dematium in vitro. Volatiles produced from the cultures of Trichoderma harzianum ISO-1 showed maximum inhibition of mycelial growth of C.dematium followed by T. piluliferum, T. harzianum ISO-2 and Aspergillus niger,

Metarhizium anisopliae and Beauveria bassiana are ubiquitous insect pathogens and possible plant symbionts, as some strains are endophytic or colonize the rhizosphere. We evaluated 11 strains of M. anisopliae and B. bassiana, and two soil saprophytes (the non-rhizospheric Aspergillus niger and the rhizosphere-competent Trichoderma harzianum) for their ability to germinate in bean root exudates ...

Trichoderma species are commercially applied as biocontrol agents against numerous plant pathogenic fungi due to their production of antifungal metabolites, competition for nutrients and space, and mycoparasitism. However, currently the identification of Trichoderma species from throughout the world based on micro-morphological descriptions is tedious and prone to error. The correct identificat...

Studies were undertaken to determine the comparative efficacy of native biocontrol agents viz., Pseudomonas fluorescens isolate PS-4, Trichoderma harzianum isolate TH-H-3 and T. virens isolate TV-K-3 @ 5X10 cfu/g talc; organic amendments viz., neem seed powder @ 250 mg/kg soil and farmyard manure @ 8 1500 mg/kg soil; carbofuran @ 33.4 mg/kg soil, topsin-M @ 1.4 mg/kg soil and bavistin @ 2.0 mg/...