Arbuscular mycorrhizal fungi on adjacent semi-natural grasslands with different vegetation in Japan |
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| Authors: | Tomomi Murakoshi Motaoki Tojo Christopher Walker Masanori Saito |
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| Institution: | (1) College of Agriculture, Osaka Prefecture University, Gakuen-cho, 599-8231 Sakai, Osaka, Japan;(2) Biological Research and Imaging Laboratory, 2 Penny Hedge, BH25 7TB New Milton, Hants., UK;(3) National Grassland Research Institute, Nishi-nasuno, 329-2793 Tochigi, Japan |
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| Abstract: | Arbuscular mycorrhizal (AM) fungi on Japanese semi-natural grasslands were investigated at three adjacent sites with different
vegetation. The predominant grasses at the three sites were 1)Pleioblastus chino, 2)Miscanthus sinensis andArundinella hirta (M. sinensis/A. hirta), and 3)Zoysia japonica, respectively. The degree of colonization was higher inM. sinensis/A. hirta than inP. chino andZ. japonica. AM fungi were recovered by spore extraction and by pot cultures started from soil inoculum or from transplanting of field
plants. Total spore number obtained by the spore extraction method was highest in the rhizosphere ofM. sinensis/A. hirta and lowest in that ofP. chino. AGlomus sp. resemblingG. geosporum predominated in association withM. sinensis/A. hirta andP. chino. FromZ. japonica, three species,Acaulospora gerdemannii, Glomus leptotichum, and a species resemblingG. clarum, were isolated by pot culture from soil and two species,A. longula andScutellospora cerradensis, by pot culture from transplanting ofZ. japonica. FromM. sinensis/A. hirta, one species,A. longula, was found by pot culture from soil. FromP. chino, no AM fungus was detected by either method. Single-spore culture confirmed thatG. leptotichum andA. gerdemannii are conspecific. |
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| Keywords: | AM fungus dimorphism semi-natural grassland single spore culture vegetation |
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