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Trichoderma longibrachiatum

About: Trichoderma longibrachiatum is a research topic. Over the lifetime, 452 publications have been published within this topic receiving 10591 citations.


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Journal ArticleDOI
TL;DR: The most active metabolite isolated from these strains was 6-n-pentyl-α-pyrone, which showed the highest antifungal and antibacterial activity and completely inhibited the growth of Armillaria mellea fungus at a concentration of 200 ppm.
Abstract: The tea plant, Camellia sinensis (L.) O. Kuntze is an important crop in the agriculturally based economy of Kenya. Many diseases affect the tea plant but the most prevalent is armillaria root rot caused by the fungus Armillaria mellea . Compounds from the fermentation of Trichoderma species in different media were bioassayed against some selected gram-positive and gram-negative bacteria, fungi including Armillaria mellea , a yeast and a Mucor. Compounds obtained from T. harzianum , and T . longibrachiatum when cultured in various media were investigated individually for in-vitro antifungal and antibacterial activities by agar diffusion technique. Some of the compounds produced definite antifungal and antibacterial activities. 2-Phenylethanol ( 1 ) and tyrosol ( 2 ) obtained from T. harzianum are reported for the first time from Trichoderma species. The most active metabolite isolated from these strains was 6-n-pentyl-α-pyrone ( 3 ), which showed the highest antifungal and antibacterial activity and completely inhibited the growth of Armillaria mellea fungus at a concentration of 200 ppm. Compound 4 (sorbicillin) exhibited moderate activity against the fungal test organisms. KEY WORDS: Trichoderma harzianum , Trichoderma longibrachiatum , 2-Phenylethanol, Tyrosol, 6-n-Pentyl-•-pyrone, Armillaria Mellea Bull. Chem. Soc. Ethiop. 2003 , 17(2), 185-190.

46 citations

Journal ArticleDOI
TL;DR: In this paper, the authors report the deep sequencing and analysis of the genome of Trichoderma longibrachiatum, an efficient cellulase producer, and provide insights into the physiology and evolution of the nutrition strategy of T. reesei, including glycoside hydrolases and nonribosomal peptide synthetase-polyketide synthase.
Abstract: Saprotrophy on plant biomass is a recently developed nutrition strategy for Trichoderma. However, the physiology and evolution of this new nutrition strategy is still elusive. We report the deep sequencing and analysis of the genome of Trichoderma longibrachiatum, an efficient cellulase producer. The 31.7-Mb genome, smallest among the sequenced Trichoderma species, encodes fewer nutrition-related genes than saprotrophic T. reesei (Tr), including glycoside hydrolases and nonribosomal peptide synthetase–polyketide synthase. Homology and phylogenetic analyses suggest that a large number of nutrition-related genes, including GH18 chitinases, β-1,3/1,6-glucanases, cellulolytic enzymes, and hemicellulolytic enzymes, were lost in the common ancestor of T. longibrachiatum (Tl) and Tr. dN/dS (ω) calculation indicates that all the nutrition-related genes analyzed are under purifying selection. Cellulolytic enzymes, the key enzymes for saprotrophy on plant biomass, are under stronger purifying selection pressure in Tl and Tr than in mycoparasitic species, suggesting that development of the nutrition strategy of saprotrophy on plant biomass has increased the selection pressure. In addition, aspartic proteases, serine proteases, and metalloproteases are subject to stronger purifying selection pressure in Tl and Tr, suggesting that these enzymes may also play important roles in the nutrition. This study provides insights into the physiology and evolution of the nutrition strategy of Trichoderma.

45 citations

Journal ArticleDOI
TL;DR: The biocontrol efficacy of Trichoderma longibrachiatum, a fungal species native to China, against M. incognita is determined and it can be considered to be a promising bio-control agentagainst M.incognita with a high efficacy.

45 citations

Patent
05 Oct 1990
TL;DR: The feed additive for poultry comprises a cellulase or a xylanase producible by means of selected strains of Humicola insolens and Trichoderma longibrachiatum as mentioned in this paper.
Abstract: The feed additive for poultry comprises a cellulase or a xylanase producible by means of selected strains of Humicola insolens and Trichoderma longibrachiatum. By means of this additive the malabsorption syndrome is effectively alleviated.

45 citations

Journal ArticleDOI
TL;DR: It is concluded that the secondary metabolite profile contains sufficient information for classification and species identification of Trichoderma strains from water-damaged building materials or indoor dust.
Abstract: Forty-four Trichoderma strains from water-damaged building materials or indoor dust were classified with chromatographic image analysis on full chromatographic matrices obtained by high performance liquid chromatography with UV detection of culture extracts. The classes were compared with morphological identification and rDNA sequence data, and for each class all strains were of the same identity. With all three techniques each strain – except one – was identified as the same species. These strains belonged to Trichoderma atroviride (nine strains), Trichoderma viride (three strains), Trichoderma harzianum (10 strains), Trichoderma citrinoviride (12 strains), and Trichoderma longibrachiatum (nine strains). The odd strain was identified as Trichoderma hamatum by morphology and rDNA sequencing, but not by image analysis as no reference strains of this species were included. It is concluded that the secondary metabolite profile contains sufficient information for classification and species identification.

45 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20221
202121
202026
201926
201819
201723