Bacteria associated with Stagonospora (Septoria) nodorum increase pathogenicity of the fungus
Bacteria associated with Stagonospora (Septoria) nodorum increase pathogenicity of the fungus
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DOI：
10.1046/j.1469-8137.1999.00542.x
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发表时间：
1999-12-01
期刊：
影响因子：
9.4
通讯作者：
Gurr, SJ
中科院分区：
文献类型：
--
作者：
Dewey, FM;Wong, YL;Gurr, SJ
在对真菌病原体Stagonospora（Septoria）nodorum的实验室分离株的研究中，三种不同的细菌分离株与真菌密切相关。细菌也密切相关的新鲜分离的S。从人工和自然感染的田间材料中获得的nodorum。虽然分离出了一系列细菌，但发现每种S.结节病。在离体叶片上与真菌的分生孢子共接种的研究中，一些细菌分离物显着增加了真菌的致病性，特别是嗜麦芽黄单胞菌，多鞘氨醇杆菌，成团肠杆菌和欧文氏菌amylovora。有证据表明，“辅助细菌”可能有助于建立感染的方式之一是通过产生在萌发的真菌孢子中未检测到的脂肪酶。
In studies with a laboratory isolate of the fungal pathogen Stagonospora (Septoria) nodorum three different isolates of bacteria were closely associated with the fungus. Bacteria were also closely associated with fresh isolates of S. nodorum obtained from artificially and naturally infected field material. Although a range of bacteria was isolated, only one type of bacterium was found to be associated with each isolate of S. nodorum. In co-inoculation studies with pycnidiospores of the fungus on detached leaves, some of the bacterial isolates significantly increased the pathogenicity of the fungus, particularly Xanthomonas maltophilia, Sphingobacterium multivorum, Enterobacter agglomerans and Erwinia amylovora. Evidence is presented indicating that one of the ways that the 'helper bacteria' may assist in the establishment of infections is by the production of lipases that were not detected in germinating fungal spores.