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Int. J. Mol. Sci. 2006, 7(9), 346-357; doi:10.3390/i7090346

Interaction of Plant Epicuticular Waxes and Extracellular Esterases of Curvularia eragrostidis during Infection of Digitaria sanguinalis and Festuca arundinacea by the Fungus

1
Department of Biochemistry and Molecular Biology, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, ChinaFood Quality Safety and Detection Research Center, ·Jiangsu Academy of Agricultural Sciences, Nanjing 210095, China
2
Food Quality Safety and Detection Research Center, ·Jiangsu Academy of Agricultural Sciences, Nanjing 210095, China
*
Authors to whom correspondence should be addressed.
Received: 27 July 2006 / Accepted: 19 September 2006 / Published: 27 September 2006
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Abstract

Curvularia eragrostidis, a causal agent of head blight on the weed (Digitariasanguinalis), did not cause disease on the turfgrass Festuca arundinacea. Differentextracellular esterase isoenzymes were detected in saprophytic and parasitic phases duringthe fungal germination. The epicuticular waxes of D. sanguinalis were more efficient toinduce the secretion of esterases from the fungus than that of F. arundinacea, but were morerapidly degraded by the fungal enzymes. Component analysis indicated that the epicuticularwaxes from D. sanguinalis were mostly composed of alcohols, with 54.3% being 9,12-Octadecadien-1-ol. The main component of F arundinacea waxes was alkyl compounds,with 49.8% being olefin, 9-Tricosence. More long-chained esters were found in D.sanguinalis waxes, which were easier to be digested than those in F. arundinacea waxes byextreacellular esterases of the fungus. Epicuticular waxes play a role in varyingpathogenicity of C. eragrostidis on D. sanguinalis and F arundinacea.
Keywords: Curvularia eragrostidis; Digitaria sanguinalis; Festuca arundinacea; wax; esterase. Curvularia eragrostidis; Digitaria sanguinalis; Festuca arundinacea; wax; esterase.
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Wang, F.; Zhang, P.; Qiang, S.; Xu, L.-L. Interaction of Plant Epicuticular Waxes and Extracellular Esterases of Curvularia eragrostidis during Infection of Digitaria sanguinalis and Festuca arundinacea by the Fungus. Int. J. Mol. Sci. 2006, 7, 346-357.

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