1. The Arbuscular fungus had formed the symbiont with the ancient land lower plants before the appearance of the higher plant.
菌根真菌早在高等植物出现以前，就已经同古老的陆生低等植物形成了共生体。
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2. To obtain genetic stable strain, we evaluated the clearance of symbionts in tsetse, impact of vitamin supplement on fly fertility and relationship between symbiont and trypanosome infection.
3. The effect of symbiont on growth and reproduction of the black bean aphid, Aphis craccivora KochObtaining aposymbiotic aphids is key to study the relationship between the aphid and Buchnera.
共生菌在黑豆蚜生长和繁殖中的作用研究蚜虫与细菌的共生关系，首先要获得脱共生蚜虫。
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4. The effect of symbiont on growth and reproduction of the black bean aphid, Aphis craccivora KochObtaining aposymbiotic aphids is key to study the relationship between the aphid and Buchnera.
