Bishop Alistair H, Gowen Simon R, Pembroke Barbara, Trotter James R
School of Chemical and Life Sciences, University of Greenwich, Medway Campus, Central Avenue, Chatham Maritime, Kent ME4 4TB, UK.
J Invertebr Pathol. 2007 Sep;96(1):28-33. doi: 10.1016/j.jip.2007.02.008. Epub 2007 Feb 25.
A species of the hyper-parasitic bacterium Pasteuria was isolated from the root-knot nematode Meloidogyne ardenensis infecting the roots of ash (Fraxinus excelsior). It is morphologically different from some other Pasteuria pathogens of nematodes in that the spores lack a basal ring on the ventral side of the spore and have a unique clumping nature. Transmission electron microscopy (TEM) showed that the clumps of spores are not random aggregates but result from the disintegration of the suicide cells of the thalli. Sporulation within each vegetative mycelium was shown to be asynchronous. In addition to the novel morphological features 16S rRNA sequence analysis showed this to be a new species of Pasteuria which we have called P. hartismeri. Spores of P. hartismeri attach to juveniles of root-knot nematodes infecting a wide range of plants such as mint (Meloidogyne hapla), rye grass (unidentified Meloidogyne sp.) and potato (Meloidogyne fallax).
从感染白蜡树（欧洲白蜡树）根部的根结线虫阿登根结线虫中分离出一种超寄生细菌巴斯德氏菌。它在形态上与其他一些线虫的巴斯德氏菌病原体不同，其孢子在孢子腹侧没有基部环，并且具有独特的聚集特性。透射电子显微镜（TEM）显示，孢子团不是随机聚集体，而是由菌体自杀细胞解体产生的。每个营养菌丝体内的孢子形成显示为不同步。除了新的形态特征外，16S rRNA序列分析表明这是一种新的巴斯德氏菌物种，我们将其命名为哈氏巴斯德氏菌。哈氏巴斯德氏菌的孢子附着在感染多种植物（如薄荷（北方根结线虫）、黑麦草（未鉴定的根结线虫属物种）和马铃薯（伪根结线虫））的根结线虫幼虫上。
