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Interaction of plant epicuticular waxes and extracellular esterases of Curvularia eragrostidis during infection of Digitaria sanguinalis and Festuca arundinacea by the fungus

文献类型： 外文期刊

作者： Wang, Fei 1 ; Zhang, Peng 2 ; Qiang, Sheng 2 ; Xu, Lang-Lai 2 ;

作者机构： 1.Nanjing Agr Univ, Coll Life Sci, Dept Biochem & Mol Biol, Nanjing 210095, Peoples R China

2.Nanjing Agr Univ, Coll Life Sci, Dept Biochem & Mol Biol, Nanjing 210095, Peoples R China; Jiangsu Acad Agr Sci, Food Qual Safety & Detect Res Ctr, Nanjing 210095, Peoples R China

关键词： Curvularia eragrostidis;Digitaria sanguinalis;Festuca arundinacea;wax;esterase

期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.923； 五年影响因子：6.132 ）

ISSN： 1422-0067

年卷期： 2006 年 7 卷 9 期

页码：

收录情况： SCI

摘要： Curvularia eragrostidis, a causal agent of head blight on the weed (Digitaria sanguinalis), did not cause disease on the turfgrass Festuca arundinacea. Different extracellular esterase isoenzymes were detected in saprophytic and parasitic phases during the fungal germination. The epicuticular waxes of D. sanguinalis were more efficient to induce the secretion of esterases from the fungus than that of F. arundinacea, but were more rapidly degraded by the fungal enzymes. Component analysis indicated that the epicuticular waxes 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 by extreacellular esterases of the fungus. Epicuticular waxes play a role in varying pathogenicity of C. eragrostidis on D. sanguinalis and F arundinacea.

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