Enzymatic activity of endophytic fungi of six native seedling species from Doi Suthep-Pui National Park, Thailand

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Endophytic fungi were isolated from the stems, petioles, midribs, and leaves of seedlings of six native tree species collected from Doi Suthep-Pui National Park, Thailand. Endophytes were isolated from all tissue samples investigated, and taxa included five ascomycetes, eight anamorphic taxa, and numerous sterile mycelia. Twenty-six strains were tested for their ability to produce cellulase, mannanase, proteinase, and xylanase. The ability to produce these enzymes was distributed amongst the strains tested. Rainforest seedlings supported a diverse array of endophytes that have a wide range of enzymatic activities. The implication of enzyme production in relation to lifestyle abilities of the endophytes is discussed.Key words: cellulase, hydrolytic enzyme, mannanase, protease, xylanase.

Des champignons endophytes ont été isolés des tiges, des pétioles, des nervures médianes et des feuilles des plants de six espèces d'arbres indigènes recueillis dans le Parc National Doi Suthep-Pui, Thaïlande. Des endophytes ont été isolés à partir de tous les échantillons de tissus analysés et les taxons comprenaient cinq ascomycètes, huit taxons anamorphiques et de nombreux mycéliums stériles. Nous avons évalué la capacité de vingt-six souches à produire de la cellulase, de la mannanase, de la protéinase et de la xylanase. La capacité de produire ces enzymes était répartie parmi les souches analysées. Les plants issus de forêts tropicales ont soutenu le développement d'un éventail varié d'endophytes ayant une large gamme d'activités enzymatiques. L'incidence de la production des enzymes sur les habitudes de vie des endophytes est débattue.Mots clés : cellulase, enzymes hydrolytiques, mannanase, protéase, xylanase. [Traduit par la Rédaction]

Keywords: cellulase; enzymes hydrolytiques; hydrolytic enzyme; mannanase; protease; protéase; xylanase

Document Type: Research Article

Publication date: December 1, 2002

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  • Published since 1954, this monthly journal contains new research in the field of microbiology including applied microbiology and biotechnology; microbial structure and function; fungi and other eucaryotic protists; infection and immunity; microbial ecology; physiology, metabolism and enzymology; and virology, genetics, and molecular biology. It also publishes review articles and notes on an occasional basis, contributed by recognized scientists worldwide.
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