Composition and Dynamic Variations of the Natural Volatiles of Prunus armeniaca

文献类型： 外文期刊

第一作者： Yang, Lu

作者： Yang, Lu;Cheng, Ping;Zhang, Zhi-gang;Li, Hong;Yang, Lu;Cheng, Ping;Zhu, Xiao-Feng

作者机构：

关键词： Scolytus seulensis;Herbivore-induced plant volatiles;Herbivory;Changing regularity

期刊名称：INTERNATIONAL JOURNAL OF AGRICULTURE AND BIOLOGY （ 影响因子：0.822； 五年影响因子：0.906 ）

ISSN： 1560-8530

年卷期： 2018 年 20 卷 1 期

页码：

收录情况： SCI

摘要： Plant-derived volatiles are used as attractants in pest control applications in the agricultural industry. Scolytus seulensis (a bark beetle native to Asia) is the major pest attacking Prunus armeniaca (apricot) in Xinjiang, China. To identify host volatiles that attract S. seulensis, dynamic headspace sampling was performed to collect volatiles from different parts of living P. armeniaca in a forest environment. The relative contents of the volatile components from the trunks and leaves of healthy and infected plants were compared in different seasons and at different times within a single day. The experiments revealed that the volatiles emitted from the trunks of the infected plants during the growth season (from May to September) were mainly alkanes, while those emitted from the leaves during this period were mainly esters. The composition of volatiles emitted by P. armeniaca varied with the month of sampling. The infected plants emitted some specific volatiles that were not emitted by healthy plants: hexanal, (E)-4-oxohex-2-enal, cyclohexane, beta-ocimene, nonanoic acid and alpha-cubebene. The daily sampling showed that 1,3,5-cycloheptariene, alpha-pinene, acraldehyde, camphene, beta-ocimene, and azulene were emitted only in small amounts by the infected plants. The composition and relative contents of the volatiles emitted from the trunks and leaves of the healthy plants were similar to those emitted from the infected plants between17: 00 and 21: 00 h. Our findings provide the basis for understanding the relationship between host selection by S. seulensis and the volatiles emitted by P. armeniaca during pest infection. Olfactometer bioassays were used to test response to host odors of Phloem of apricot versus and Phloem of apricot extract versus. This species also responded most quickly in the olfactometer, which is encouraging for successful biological control with this species. (C) 2018 Friends Science Publishers

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