文档介绍：
生态位视角下的松材线虫与其原产地抗病
松树的稳定共存机制和其对控制疫区松材
线虫病的指导意义#
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张建平*
(江苏科技大学生物与化学工程学院,江苏镇江 212018)
摘要:松材线虫与松树在互作进化模式和结局上不同于植物病害中的其它病原物,松材线虫
通过与其原产地抗病松树生态位的分离形成双方的稳定共存。松材线虫在活体(健康)松树
上的营养生态位可导致松树的必然死亡,松树的生存需要对松材线虫的极端抗性,松材线虫
营养生态位受到松树抗性的挤压,而松材线虫可压缩的基础生态位、种内选择作用与特殊的
侵染循环,最终形成双方生态位的分离。对抗病松树与松材线虫生态位的分离并导致稳定共
存的生态学机制的深入阐明,有助于揭示松材线虫病发生流行的生态学机制,明确对疫区松
材线虫病治理的长远策略、坚定利用抗病树种从根本上控制疫区松材线虫病的信念。
关键词:进化生态学;松材线虫;松树;生态位;寄主抗性;协同进化
中图分类号:
Stable coexistence mechanism of Bursaphelenchus
xylophilus with local disease-resistant pine trees and its
significance in controlling pine wilt disease
ZHANG Jianping
(School of Biology and Chemical Engineering, Jiangsu University of Science and Technology,
Zhenjiang, Jiangsu 212018)
Abstract: Bursaphelenchus xylophilus and pine trees develop different interactive evolution modes
and es from other plant pathogens. B. xylophilus coexists stably with local disease-resistant
pine trees by separating from their ecological niches. These trophic niches kill healthy pine trees. Pine
trees need to develop extremely high resistance to B. xylophilus to survive. Pine resistance, the
compressible fundamental niche of B. xylophilus, interspecies selection, and unique infection cycle of
B. xylophilus separate the ecological niche of B. xylophilus from that of pine trees. Determining the
ecological mechanism of pine wilt dise