红脂大小蠹伴生菌研究进展

红脂大小蠹是我国重要的外来入侵害虫,给我国林业生产和国土生态安全带来巨大危害.包括红脂大小蠹在内的小蠹科昆虫与真菌之间存在着广泛的共生关系,伴生菌在协助昆虫建立种群、协同克服寄主抗性等方面起到重要作用.对北美原发地红脂大小蠹伴生菌的研究进行综述,以期探讨引起灾害发生的多重因素,并为灾害的控制提供思路.红脂大小蠹记载与10种长喙壳类真菌伴生,其中黑脂小蠹细帚霉、长梗细帚霉、温菲尔德细帚霉和瓦格纳长喙壳等与红脂大小蠹有着较为紧密的共生关系.对这些主要伴生菌的形态特征、系统发育关系、生活习性和致病性进行详细比较.应当警惕这些重要森林病原物对我国森林生态系统的入侵和危害.并对今后包括红脂大小蠹伴生菌在内的我国小蠹虫伴生菌的研究进行讨论.

Progress in Study on the Fungi Associated with Dendroctonus valens

Red turpentine beetle(Dendroctonus valens,RTB),which was probably introduced from USA,is one of the most important invasive pests in Chinese forest ecological system.The beetle traits had changed a lot since it was introduced to China,and the changed traits were linked to the abnormal mortality of Pinus tabulaeformis caused by the beetle in the northern China.Ophiostomatoid fungi were well-known to have widespread symbiotic relationship with the beetles,such as Coleoptera:Scolytidae.The symbiotic fungi were of benefit for the insects to establish their population,and the symbiosis integrated to destruct the defense devices of the host(Pinus tabulaeformis).The paper mainly reviewed the study on the fungi associated with RTB in North American.There are around 10 species of ophiostomatoid fungi recorded associated with RTB in their original regions.Among them,Leptographium terebrantis,L.procerum,L.wingfieldii and Grosmannia wageneri are common and have relatively close associates of RTB.Their morphological features,phylogenetic relationships,life habits and pathogenicity were compared in details.Particular attention should be paid to these important forest pathogens invading to China and causing damage to Chinese forest ecosystem.The research perspective of fungi associated with bark beetle in China was also discussed.