Production of volatile substances by rhizomorphs of Marasmius crinisequi and its significance in nature

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题名:	Production of volatile substances by rhizomorphs of Marasmius crinisequi and its significance in nature
作者:	H. J. Su;F. M. Thseng;J. S. Chen;Wen-Hsiung Ko
贡献者:	Department of Nursing, Meiho University, Nepu, Pingtung, Taiwan;Tea Research and Extension Station, Yangmei, Taoyuan, Taiwan;Department of Plant Pathology, National Chung Hsing University, Taichung, Taiwan
关键词:	Defoliation;Horse-hair blight;Rhizomorphs;Tea bush;Volatile substances
日期:	2010
上传时间:	2011-09-21T08:27:13Z (UTC)
摘要:	Twigs entangled by rhizomorphs of Marasmius crinisequi inside tea bushes are ostly devoid of leaves. This was found to be due to the emission of a defoliation-inducing volatile by the rhizomorphs, because when tea twigs were enclosed with rhizomorph sections of M. crinisequi, leaf fall occurred within 5 days. Leaves on control twigs remained healthy and attached. The volatile substances emitted from rhizomorphs were passed through acetone and the volatile compounds in acetone were analyzed by GC/MS. The emitted volatiles were identified as 3-oxo-β-ionol, ,4,6-tri-ter-butyl-4- methyl-cyclohexadien-2,5-one and 2-phenyl-3,4,5,6-tetramethylpyridine. These compounds have not been reported from fungi or plants prior to this report. The significance of the production of a defoliation-inducing volatile by rhizomorphs of M. crinisequi in its acquisition of nutrients from tea leaves in the competitive environment is discussed.
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