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KMID : 0379119940220010036
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Korean Journal of Mycology
1994 Volume.22 No. 1 p.36 ~ p.45
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Hyphal growth , auxiliary cell development and hyphal healing process of arbuscular mycorrhizal fungi , Gigaspora and Scutellospora genera
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Ka Kang-Hyeon
Koo Chang-Duck
Yi Chang-Keun
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Abstract
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Hyphal growth, auxiliary cell development and hyphal healing process of Gigaspora margarita, Scutellospora heterogama and S. verrucosa were investigated. The germinated hyphae from spores grew on the surface and the bottom of agar media. The hyphal growth on the surface stopped 19 to 23 days and the growth on the bottom 40 to 51 days after spore germination. Auxiliary cells began to develop 7 to 9 days after the spore germination in the media. The auxiliary cells almost always developed on the tip of a hypha branched from a secondary hypha. The cytoplasmic streaming rates in the hyphae of G. margarita and S. heterogama were 2.7 to 3.3 ㎛/s and 3.8 to 4.3 ㎛/s, respectively. The hyphae artificially cut were healed by connecting with a hypha grown from the spore-side hypha. We may suggest that the wound healing process of hyphae should be one of the characteristics obtained from symbiotic relationship between host plants and arbuscular mycorrhizal fungi for a long period of time.
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