The fungi of stigmatomycosis
The fungi of stigmatomycosis
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DOI：
10.1093/oxfordjournals.aob.a090018
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发表时间：
1926-01-01
期刊：
影响因子：
4.2
通讯作者：
Nowell, W
中科院分区：
文献类型：
--
作者：
Ashby, SF;Nowell, W
作者描述了英属西印度群岛常见的 4 种真菌的形态和文化特征，这些真菌与水果的柱状真菌病有关，这种感染是由于异翅亚目的植物食性昆虫的刺穿，导致外表完好的水果内部受到感染。涉及的真菌是 SPERMOPHTHORA gossypii n。将军和 n. sp.、Eremoihecium cymbalariae Borzi.、Nematospora gossypii n.。 sp. 和 Nematospora coryli Peglion。这4个物种具有某些共同特征，表明它们是一个难以归入任何现有分类学安排的自然类群。所有这些都可以在无菌培养基上的纯培养物中轻松生长和形成孢子。棉子精孢菌形成二歧分枝的虹吸菌丝体，其在菌丝末端后面扩大，形成梭形孢子囊，其中含有许多无限排列的、针状的、连续的孢子，这些孢子通过孢子囊壁的破裂而逸出。萌发是通过芽管发生的，芽管要么发育成初生菌丝体，要么相邻孢子的芽管融合并产生有限生长的菌丝体，其带有微小的椭圆形孢子囊，其中含有8个或更多弯曲的、圆柱形的、连续的孢子，这些孢子在萌发时再次发育成初生虹吸菌丝体。作者认为，这个生命周期可能表明藻菌纲和子囊菌纲之间存在联系。
The authors describe the morphological and cultural characters of 4 species of fungi which are of common occurrence in the British West Indies in connection with stigmatomycosis of fruits, a type of infection in which fruits externally sound are found to be internally infected as a result of punctures made by plant-feeding bugs of the sub-order Heteroptera. The fungi concerned are SPERMOPHTHORA gossypii n. gen. and n. sp., Eremoihecium cymbalariae Borzi., Nematospora gossypii n. sp., and Nematospora coryli Peglion. The 4 species have certain characters in common, indicating a natural group which is difficult to place in any of the existing taxonomic arrangements. All grow and sporulate readily in pure culture on sterilized media. Spermophthora gossypii forms a.dichotomously branching siphonaceous mycelium which enlarges behind the ends of the hyphae to form fusiform sporangia containing numerous indefinitely arranged, needle-shaped, continuous spores which escape by rupture of the sporangial wall. Germination occurs by a germ tube which either develops into the primary mycelium or the germ tubes of adjacent spores fuse and give rise to a mycelium of limited growth bearing minute oval sporangia containing 8 or more curved, cylindric, continuous spores which on germination again develop the primary siphonaceous mycelium. The authors believe that this life cycle may indicate a link between Phycomycetes and Ascomycetes.