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当前位置: 首页 > 文章 > 冬虫夏草菌在寄主钩蝠蛾幼虫中的潜伏侵染过程研究 环境昆虫学报 2015,37 (2) 387-392
Position: Home > Articles > The latent infection process of Ophiocordyceps sinensis in host Thitarodes larvae Journal of Environmental Entomology 2015,37 (2) 387-392

冬虫夏草菌在寄主钩蝠蛾幼虫中的潜伏侵染过程研究

作  者：
雷桅;彭青云;张古忍;刘昕
单  位：
中山大学生命科学学院
关键词：
冬虫夏草菌;蒲氏钩蝠蛾;real-time q PCR;侵染;青藏高原
摘  要：
冬虫夏草是青藏高原的特色名贵药材,是冬虫夏草菌Ophiocordyceps sinensis寄生于钩蝠蛾幼虫后形成的虫生子囊真菌,其发生机理和侵染途径至今未知。本文利用real-time q PCR实时定量技术检测了寄主蒲氏钩蝠蛾Thitarodes pui幼虫表皮、脂肪体、血淋巴和肠壁等组织中冬虫夏草菌定殖量,分别建立了起始于表皮的侵染路径(R20.678)和起始于肠道的侵染路径(R20.271)两种Holt数学模型,经比较分析后,推论冬虫夏草菌随口腔摄食侵染寄主幼虫的方式具有一定合理性和可行性,揭示冬虫夏草菌可以通过进食途径实现其对钩蝠蛾幼虫的带菌生长、侵染和寄生,从而为深入阐释冬虫夏草菌与寄主钩蝠蛾幼虫相互作用关系提供重要参考。
译  名：
The latent infection process of Ophiocordyceps sinensis in host Thitarodes larvae
作  者：
LEI Wei;PENG Qing-Yun;ZHANG Gu-Ren;LIU Xin;College of Life Science,Sun Yat - sen University;
关键词：
Ophiocordyceps sinensis;;Thitarodes pui;;real-time q PCR;;infection;;Tibetan Plateau
摘  要：
Ophiocordyceps sinensis, an entomogenous fungus parasitic in the larvae of ghost moths( Lepidoptera),has always been used as one of the most valued Traditional Chinese Medicines throughout the Orient World. However, its occurrence and developmental mechanisms are crucial but almost completely unknown. Based on real- time quantitative PCR( q PCR) method,the distribution of O.sinensis was determined in different tissues of the Thitarodes larvae including body- wall,fat- body,haemolymph and intestinal- wall. Meanwhile,two latent infection models based on the inward type starting at body- wall( R20. 678) and the outward type starting at intestine( R20. 271) were constructed successfully,the infection theory associated with food taking was supported after comparison and analyses. This study will contribute to deeply explain interaction between O. sinensis and its host Thitarodes insects.

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