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综述了中国大陆腐霉属的研究进展,内容包括腐霉属菌物的发生、分布、分类鉴定、致病性、所致植物病害防治及腐霉的利用等方面.至今,中国已报道的腐霉属菌物有64个种,其中有13个种作为世界新种进行了描述,这13个新种分别为:顶生腐霉Pythium acrogynum,孤雌腐霉P.amasculinum,百色腐霉P.baisense,北方腐霉P.boreale,短枝腐霉P.breve,壁合腐霉P.connatum,镰雄腐霉P.falciforme,贵阳腐霉P.guiyangense,广西腐霉P.guangxiense,下雄腐霉P.hypoandrum,昆明腐霉P.kummingense,南宁腐霉尸nanningense和中国腐霉P.sinensis.瓜果腐霉Pythium aphanidermatum为优势种,在全国普遍引起多种植物严重的猝倒病和根、茎、叶、果腐烂病.其中,大多数腐霉种对植物具有致病性,44个种寄生植物,1个种:紫菜腐霉P.porphyrae寄生红藻和紫菜,2个种:卡地腐霉P.carolinianum 和贵阳腐霉P.guiyangense寄生蚊子幼虫,2个种:努氏腐霉P.nunn和寡雄腐霉P.oligandrum 是真菌的重寄生菌.相比之下,台湾报道的腐霉种有48种(其中新种1个:四季腐霉P.sukuiense),海南报道的腐霉种有28种.对中国大陆腐霉属的研究前景也进行了讨论. 相似文献
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Lisa Kutschbach-Brohl Brian E. Washburn Glen E. Bernhardt Richard B. Chipman Laura C. Francoeur 《Journal of Insect Conservation》2010,14(4):347-358
Semi-natural grassland habitat fragments, such as those found on airports, might be important for arthropod conservation and
biodiversity in urban ecosystems. The objectives of this study were to: (1) describe the arthropod communities present within
the grasslands on the John F. Kennedy International Airport and (2) assess spatial and temporal variation in those arthropod
communities. We collected arthropods using a vacuum sampler during 2003 and using sweep-net collection methods during 2003
and 2004. During 2003, a total of 1,467 arthropods, representing 17 orders and 68 families were found in vacuum samples. A
total of 3,784 arthropods, representing 12 orders and 94 families were collected in sweep-net samples during 2003. In 2004,
a total of 3,281 arthropods, representing 12 orders and 85 families were collected in sweep-net samples. Hemiptera, Orthoptera,
and Diptera were the most abundant taxa, accounting for 47, 18, and 14% of all arthropods captured, respectively. We found
evidence of spatial and temporal variation in arthropod abundance, in particular as noted by fluctuations in Orthoptera: Acrididae
and Hemiptera: Auchenorrhyncha. Hemipteran family diversity was also influenced by habitat type. Grassland habitats on airfields,
although influenced by anthropogenic factors (e.g., mowing), have the potential to provide abundant and diverse arthropod
communities and might serve as a refugium for such species within urban ecosystems. 相似文献
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