The population structure and sex ratios of Bursaphelenchus xylophilus under α-pinene stress

被引：6

作者：

Cui, Jing ^{[1
]}

Li, Yong-Xia ^{[1
,2
]}

Zhang, Wei ^{[1
]}

Wang, Xuan ^{[1
]}

Pan, Long ^{[1
]}

Feng, Yu-Qian ^{[1
]}

Zhang, Xing-Yao ^{[1
,2
]}

机构：

[1] Chinese Acad Forestry, Res Inst Forestry New Technol, Beijing 100091, Peoples R China

[2] Nanjing Forestry Univ, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 210037, Peoples R China

来源：

JOURNAL OF FORESTRY RESEARCH | 2020年 / 31卷 / 03期

关键词：

Pine wood nematode; alpha-Pinene; Population structure; Sex ratios; WOOD NEMATODE; PROPAGATION;

D O I：

10.1007/s11676-018-0847-7

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

Pine wood nematode (PWN), Bursaphelenchus xylophilus, is a serious pathogen of pines throughout the world. Previous work indicated that different concentrations of alpha-pinene could affect nematode reproduction, however the mechanism of that influence is not clear. In order to examine the reproductive strategies of PWN in response to the stress of the volatile material alpha-pinene, we investigated different aspects of population changes of B. xylophilus under two concentrations of alpha-pinene. The results show that a high concentration (214.5 mg ml(-1)) promoted population growth while a low concentration (56.33 mg ml(-1)) decreased the population. Population structure was analyzed and it was found that a high concentration of alpha-pinene decreased the percentage of adults but increased the percentages of larvae and eggs. Furthermore, from the results of an evaluation of sex ratios (female/male), it was determined that a high concentration could elevate sex ratios but a low concentration decreased ratios sharply. These results suggest that the PWN could regulate its population by changing sex ratios under stress of alpha-pinene. This study has provided a theoretical basis for the prevention and control of pine wilt disease caused by the pine wood nematode.

引用

页码：921 / 926

页数：6

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