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Microb Ecol

Title:		Fungal Endophytes: an Alternative Source for Production of Volatile Compounds from Agarwood Oil of Aquilaria subintegra
Author(s):		Monggoot S; Popluechai S; Gentekaki E; Pripdeevech P;
Address:		"School of Science, Mae Fah Luang University, Chiang Rai, 57100, Thailand. School of Science, Mae Fah Luang University, Chiang Rai, 57100, Thailand. patcharee.pri@mfu.ac.th"
Journal Title:		Microb Ecol
Year:		2017
Volume:		20170105
Issue:		1
Page Number:		54 - 61
DOI:		10.1007/s00248-016-0908-4
ISSN/ISBN:		1432-184X (Electronic) 0095-3628 (Linking)
Abstract:		"Fungal endophytes are microorganisms that are well-known for producing a diverse array of secondary metabolites. Recent studies have uncovered the bioprospecting potential of several plant endophytic fungi. Here, we demonstrate the presence of highly bioactive fungal endophytic species in Aquilaria subintegra, a fragrant wood plant collected from Thailand. Thirty-three fungal endophytic strains were isolated and further identified to genus level based on morphological characteristics. These genera included Colletotrichum, Pestalotiopsis, Fusarium, Russula, Arthrinium, Diaporthe and Cladosporium. All strains were cultured on potato dextrose broth for 30 days prior to partitioning with ethyl acetate. The volatile compounds of all extracts were investigated by gas chromatography-mass spectrometry (GC-MS). Four strains-Arthrinium sp. MFLUCC16-0042, Colletotrichum sp. MFLUCC16-0047, Colletotrichum sp. MFLUCC16-0048 and Diaporthe sp. MFLUCC16-0051-produced a broad spectrum of volatile compounds, including beta-agarofuran, alpha-agarofuran, delta-eudesmol, oxo-agarospirol, and beta-dihydro agarofuran. These compounds are especially important, because they greatly resemble those originating from the host-produced agarwood oil. Our findings demonstrate the potential of endophytic fungi to produce bioactive compounds with applications in perfumery and cosmetic industries. Antioxidant activity of all extracts was also evaluated by using 2,2-diphenyl-2-picrylhydrazyl radical scavenging assays. The ethyl acetate extract of Diaporthe sp. MFLUCC16-0051 demonstrated superior antioxidant capacity, which was comparable to that of the gallic acid standard. Our results indicate that the MFLUCC16-0051 strain is a resource of natural antioxidant with potential medicinal applications"
Keywords:		Ascomycota/*chemistry Colletotrichum/*chemistry Endophytes/*chemistry Gas Chromatography-Mass Spectrometry Plant Oils/*analysis Thailand Thymelaeaceae/*microbiology Volatile Organic Compounds/*analysis Agarofuran Agarwood oil Aquilaria subintegra Diaporth;
Notes:		"MedlineMonggoot, Sakon Popluechai, Siam Gentekaki, Eleni Pripdeevech, Patcharee eng 2017/01/07 Microb Ecol. 2017 Jul; 74(1):54-61. doi: 10.1007/s00248-016-0908-4. Epub 2017 Jan 5"