我国东南沿海地区的AM真菌Ⅳ.四个我国新记录种

本文报道了采自我国山东、福建、广西和海南四省土壤中的四种ＡＭ真菌新记录种：１．两型球囊霉ＧｌｏｍｕｓｄｉｍｏｒｐｈｉｃｕｍＢｏｙｅｔｃｈｋｏ＆Ｔｅｗａｒｉ;２．多产球囊霉ＧｌｏｍｕｓｆｅｃｕｎｄｉｓｐｏｒｕｍＳｃｈｅｎｃｋ＆Ｓｍｉｔｈ;３．亮色盾巨孢囊霉ＳｃｕｔｅｌｏｓｐｏｒａｆｕｌｇｉｄａＫｏｓｋｅ＆Ｗａｌｋｅｒ;４．网纹盾巨孢囊霉Ｓｃｕｔｅｌｏｓｐｏｒａｒｅｔｉｃｕｌａｔａ（Ｋｏｓｋｅ,Ｍｉｌｅｒ＆Ｗａｌｋｅｒ）Ｗａｌｋｅｒ＆Ｓａｎｄｅｒｓ。文中详细描述了其形态特征和生境状况。     

黄土高原的一个VA菌根真菌新种：三红盾巨孢囊霉

在黄土高原中条山区发现一个盾巨孢囊霉属新种,其孢子无色透明,但球茎状连孢菌丝、芽盾及发芽菌丝均呈明显的红棕色,故命名为三红盾巨孢囊霉Scutellosporatrirubiginopa X．L. Pan & G. Y．Zhang 近似种 S. gilmorei Walker ＆ Sanders(1986)和S scutata Walker ＆ Diederichs(1989),在许多方面均不同于此新种。标本藏于山西省农科院棉花研究所。     

Trade-offs between arbuscular mycorrhizal fungal competitive ability and host growth promotion in Plantago lanceolata

In this study we tested for trade-offs between the benefit arbuscular mycorrhizal (AM) fungi provide for hosts and their competitive ability in host roots, and whether this potential trade-off shifts in the presence of a plant stress (herbivory). We used three species of AM fungi previously determined to vary in host growth promotion and spore production in association with host plants. We found that these AM fungal species competed for root space, and the best competitor, Scutellospora calospora, was the worst mutualist. In addition, the worst competitor, Glomus white, was the best mutualist. Competition proved to have stronger effects on fungal infection patterns than herbivory, and competitive dominance was not altered by herbivory. We found a similar pattern in a previous test of competition among AM fungi, and we discuss the implications of these results for the persistence of the mutualism and feedbacks between AM fungi and their plant hosts.     

西双版纳地区龙脑香科植物根围的AM真菌

调查了版纳地区龙脑香科植物根围的丛枝菌根(Arbuscular mycorrhizae,AM)真菌的资源状况.共分离鉴定出Acaulospora属9种,Archaeospora属2种,Glomus属23种,Paraglomus属1种,Scutellospora属2种,其中Acaulospora rehmii,Glomus convolutum,Glomus magnicaule 3种为我国的新记录种.     

西双版纳地区龙脑香科植物根围的AM真菌*

调查了版纳地区龙脑香科植物根围的丛枝菌根(Arbuscular mycorrhizae, AM)真菌的资源状况。共分离鉴定出Acaulospora属9种, Archaeospora属2种, Glomus 属23种, Paraglomus属1种, Scutellospora属2种, 其中Acaulospora rehmii, Glomus convolutum, Glomus magnicaule 3种为我国的新记录种。     

野生植物根围的丛枝菌根真菌I

１９９５－１９９７年作者比较系统地调查研究了山东省、北京和沈阳３个区域内野生植物根围丛枝菌根（Ａｒｂｕｓｃｕｌａｒｍｙｃｏｒｒｈｉｚａｅ,ＡＭ）菌的资源状况,对采自５０种野生植物根围的１８２个土样中ＡＭ菌进行了分离、培养和鉴定,共分离出Ａｃａｕｌｏｓｐｏｒａ属６种,分别为附柄无柄囊霉Ａｃａｕｌｏｓｐｏｒａａｐｐｅｎｄｉｃｕｌａ　Ｓｐａｉｎ,Ｓｉｅｖｅｒｄｉｎｇ　＆Ｓｃｈｅｎｃｋ、膨胀无柄囊霉ＡｃａｕｌｏｏｐｏｒａｄｉｌａｔａｔａＭｏｒｔｏｎ、浅窝无柄囊霉Ａ．ｌａｃｕｎｏｓａＭｏｒｔｏｎ、蜜色无柄囊霉Ａ．ｍｅｌｌｅａＳｐａｉｎ　＆Ｓｃｈｅｎｃｋ、细凹无柄囊霉Ａ．ｓｃｒｏｂｉｃｕｌａｔａＴｒａｐｐｅ、刺无柄囊霉Ａ．ｓｐｉｎｏｓａＷａｌｋｅｒ　＆Ｔｍｐｐｅ;Ｇｉｇａｓｐｏｒａ属的一个种,珍珠巨抱囊霉ＧｉｇａｓｐｏｒａｍａｔｙａｒｉｔａＢｅｃｋｅｒ＆Ｈａｌｌ;Ｓｃｕｔｅｌｌｏｓｐｏｒａ属的１个种,美丽盾巨孢囊霉Ｓｃｕｔｅｌｌｏｓｐｏｒａ　ｃａｌｏｓｐｏｒａ（Ｎｉｃｏｌ,＆Ｄｅｒｄ．）Ｇｅｕｌｅｍａｎｎ　＆Ｔｒａｐｐｅ,其中浅窝无柄囊霉为我国的一个新记录种。