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URN: urn:nbn:de:kobv:517-opus-42646
URL: http://opus.kobv.de/ubp/volltexte/2010/4264/


Oliveira Jr, E. N. ; Gueddari, Nour E. El ; Moerschbacher, Bruno M. ; Peter, Martin ; Franco, Telma

Growth of phytopathogenic fungi in the presence of partially acetylated chitooligosaccharides

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Kurzfassung auf Englisch

Four phytopathogenic fungi were cultivated up to six days in media containing chitooligosaccharide mixtures differing in average DP and FA. The three different mixtures were named Q3 (which contained oligosaccharides ofDP2–DP10, withDP2–DP7 asmain components), Q2 (which contained oligosaccharides of DP2–DP12, with DP2–DP10 as main components) and Q1 (which derived from Q2 and contained oligomers of DP5–DP8 with hexamer and a heptamer as the main components). The novel aspect of this work is the description of the effect of mixtures of oligosaccharides with different and known composition on fungal growth rates. The growth rate of Alternaria alternata and Rhizopus stolonifer was initially inhibited by Q3 and Q2 at higher concentrations. Q1 had a growth stimulating effect on these two fungi. Growth of Botrytis cinerea was inhibited by Q3 and Q2, while Q1 had no effect on the growth of this fungus. Growth of Penicillium expansum was only slightly inhibited by higher concentrations of sample Q3, while Q2 and Q1 had no effect. The inhibition of growth rates or their resistance toward chitooligosaccharides correlated with the absence or presence of chitinolytic enzymes in the culture media, respectively.

Freie Schlagwörter (englisch): Chitosan , Chitinase , Fungi , Oligosaccharides , Phytopathogens
Institut: Institut für Chemie
DDC-Sachgruppe: Chemie
Dokumentart: c Postprint
Schriftenreihe: Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe, ISSN 1866-8372
Band Nummer: paper 105
Quelle: Mycopathologia 166 (2008) 3, S. 163-174, DOI 10.1007/s11046-008-9125-0
Sprache: Englisch
Erstellungsjahr: 2008
Publikationsdatum: 12.05.2010
Bemerkung:
The original publication is available at www.springerlink.com:
Mycopathologia. - 166 (2008) Issue 3, p. 163-174
ISSN 0301-486X
DOI 10.1007/s11046-008-9125-0
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