SPORES OF VAM FUNGI INSIDE SPORES OF VAM FUNGI
SPORES OF VAM FUNGI INSIDE SPORES OF VAM FUNGI
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VAM 真菌孢子内的 VAM 真菌孢子
DOI：
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发表时间：
1984
期刊：
影响因子：
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通讯作者：
R. E. Koske
中科院分区：
文献类型：
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作者：
R. E. Koske
在美国大西洋海岸和五大湖的沙丘中，至少 10 种囊泡丛枝菌根 (VAM) 真菌（主要是大孢菌属成员）的死孢子被其他 VAM 真菌种类的孢子占据。大孢子虫、无梗孢子虫和球囊霉属的物种参与了这种关联。单个死孢子内出现1-5个不同物种的孢子，单个孢子含有1-100个孢子。来自弗吉尼亚海滩沙丘的样本含有最大比例的占据孢子。在一些根区样品中，被占据的大孢子虫孢子与完整孢子的比例高达5:1。最常在其他 VAM 孢子内产生孢子的 VAM 物种是球囊霉属 (Glomus sp.)。类似于巴特勒在 1939 年描述的化石物种。对与美国大西洋海岸和五大湖的沙丘定植植物物种相关的囊泡丛枝菌根 (VAM) 真菌的调查显示，大量孢子缺乏其原始内容，被其他 VAM 真菌物种的孢子占据。由于大多数 VAM 真菌物种的孢子内存在孢子的情况尚未被报道，而且这种关系可能具有生态意义并导致分类学混乱，因此启动了以下研究来对所涉及的物种进行编目。材料和方法
Dead spores of at least 10 species of vesicular-arbuscular mycorrhizal (VAM) fungi, mostly members of the genus Gigaspora, were occupied by spores of other species of VAM fungi in sand dunes of the Atlantic Coast of the U.S. and of the Great Lakes. Species of Gigaspora, Acaulospora, and Glomus were involved in such associations. Spores of 1-5 different species occurred within single dead spores and individual spores contained 1-100 spores. Samples from sand dunes at Virginia Beach contained the greatest percentage of occupied spores. In some root-zone samples, the ratio of occupied Gigaspora spores to intact spores was as high as 5:1. The VAM species most frequently sporulating within other VAM spores was a Glomus sp. resembling a fossil species described by Butler in 1939. A survey of vesicular-arbuscular mycorrhizal (VAM) fungi associated with sand dune-colonizing plant species ofthe Atlantic Coast ofthe United States and of the Great Lakes revealed numerous spores, devoid of their original contents, that were occupied by spores of other species of VAM fungi. Since the presence of spores within spores is unreported for most species of VAM fungi and because such a relationship may be of ecological significance and also lead to taxonomic confusion, the following study was initiated to catalogue the species involved. MATERIALS AND METHODS