Results 191 to 200 of about 10,682 (213)

Antifungal Metabolites from Trichoderma harzianum

Journal of Natural Products, 1993
A detailed examination of the metabolites produced in liquid cultures by a strain of Trichoderma harzianum, isolated from wheat roots, has resulted in the identification of a further five metabolites. Two of these, cyclonerodiol [5] and the octaketide keto diol 6, have previously been isolated from a strain of Trichoderma koningii.
Catherine Y. Rowland, Emilio L. Ghisalberti   +1 more
openaire   +3 more sources

The purification and characterization of a Trichoderma harzianum exochitinase

Biochimica et Biophysica Acta (BBA) - Protein Structure and Molecular Enzymology, 1998
A chitinolytic enzyme was purified from the culture filtrate of T. harzianum (T198) by precipitation with ammonium sulphate followed by affinity binding to swollen chitin and release with 10% (v/v) acetic acid. The molecular weight of the enzyme was calculated to be 28 and 27.5 kD by gel filtration chromatography and SDS-PAGE, respectively.
Eddie E Deane, James M. Lynch, John M. Whipps, John F. Peberdy   +3 more
openaire   +3 more sources

Compost is a carrier medium for Trichoderma harzianum

BioControl, 2020
Trichoderma spp. are one of the most commercialized fungal biocontrol agents. To improve its applicability, while preserving its effectiveness against diseases, a selection of composts were tested as carrier mediums. The population dynamic of T. harzianum was studied in three composts differing in biological characteristics based on the Nematode Index ...
Monica Höfte, Lisa Joos, Jane Debode, Gisèle L. Herren, Isabelle Binnemans, Feyisara Eyiwumi Oni, Hanne Steel, Wim Bert, Marjolein Couvreur   +8 more
openaire   +2 more sources

Effect of pesticides on Trichoderma harzianum

2010 International Conference on Mechanic Automation and Control Engineering, 2010
In this paper, for improving the integrative controlling effect of Trichoderma harzianum, effect of 14 pesticides on T. harzianum was studied with growth rate method and the circle of inhibiting bacterium method. The results suggested that all 14 tested pesticides with different concentration showed different controlling effect on mycelia growth of T ...
Rui-fu Xu, Jian-feng Lang, Yan-bing Wu, Xiu-juan Ren, Da-fu Wu, Zhen-min Yan, Yang fan Gao, Xi-ling Chen   +7 more
openaire   +2 more sources

Extracellular laccases in ascomycetesTrichoderma atroviride andTrichoderma harzianum [PDF]

Folia Microbiologica, 2002
Laccase activity in Trichoderma harzianum and in our own isolate Trichoderma atroviride was correlated with the production of the green pigment in conidial spores. The laccases of the two fungal species exhibit comparable kinetic parameters, pH optima and thermal sensitivity but differed in physiological properties, such as their catalytic activity ...
Udo Hölker, Milan Höfer, J. Dohse
openaire   +2 more sources

Isolation and Structure of Harzianum A: A New Trichothecene from Trichoderma harzianum

Journal of Natural Products, 1994
A new trichothecene, harzianum A [1], was isolated from the soil-borne fungus Trichoderma harzianum. The structure of 1 was determined by extensive spectral analyses including the nmr techniques of PS-COSY, HMQC, HMBC, and NOESY. Harzianum A [1] contains a (Z,E,E)-2,4,6-octatriendioic acid esterified on the 4 beta hydroxyl group of trichodermol and is ...
Margaret Miller-Wideman, David G. Corley, Richard C. Durley   +2 more
openaire   +3 more sources

Production of \-mannanases by Trichoderma harzianum E58

Applied Microbiology and Biotechnology, 1990
The extracellular mannanase and endoglucanase activities of Trichoderma harzianum E58 were followed during growth of the fungus on 1% (w/v) mannose, Avicel, locust bean gum, konjac powder or the water-soluble fraction from stream-treated white spruce (SWS). Peak galactomannanase activities of 0.60 IU/ml and 0.66 IU/ml were detected in culture filtrates
J. P. Torrie, D. J. Senior, J. N. Saddler   +2 more
openaire   +2 more sources

Xylanase production by Trichoderma harzianum E58

Applied Microbiology and Biotechnology, 1989
Growth of Trichoderma harzianum E58 on hemicellulose-rich media, both in batch and fermentor cultures, resulted in independent profiles for the production of xylanase and endoglucanase enzymes. Dramatic differences in the ratio of xylanase to endoglucanase activities were observed among cultures grown on cellulose-rich Solka Floc and xylan.
John N. Saddler, D. J. Senior, P. R. Mayers   +2 more
openaire   +2 more sources

Antifungal alkyl pyrones of Trichoderma harzianum

Transactions of the British Mycological Society, 1987
Two strains of Trichoderma harzianum were both found to produce the volatile metabolites 6-n-pentyl-2H-pyran-2-one and 6-n-pentenyl-2H-pyran-2-one. The pentyl analogue, the major product, demonstrated potent inhibitory properties to a wide range of fungi and considerably reduced the rate of damping off in lettuce seedlings by Rhizoctonia solani ...
N. Claydon, M. Allan, Anthony G. Avent, James R. Hanson   +3 more
openaire   +2 more sources

Hypocrea lixii, the teleomorph of Trichoderma harzianum

Mycological Progress, 2002
Cultures derived from ascospores of Hypocrea lixii (= H. nigricans, H. lentiformis) produced the morphological species Trichoderma harzianum in pure culture. Trichoderma harzianum, the most commonly found species of the genus, is also one of the most species frequently used in biocontrol of plant pathogens.
Priscila Chaverri, Gary J. Samuels
openaire   +2 more sources