PHYSIOLOGIC SPECIALIZATION IN THE TOMATO WILT FUNGUS FUSARIUM
PHYSIOLOGIC SPECIALIZATION IN THE TOMATO WILT FUNGUS FUSARIUM
复制标题
番茄枯萎病真菌的生理学特性
DOI：
--
复制
发表时间：
2010
期刊：
影响因子：
--
通讯作者：
F. Lycopersici
中科院分区：
文献类型：
--
作者：
F. Oxysporum;F. Lycopersici
1939年，Bohn和Tucker描述了番茄（Lycopersicon pinpinellifolium）的抗性。番茄枯萎菌FusaHum oxysporum f. lycopersici (Sacc.)，品种号160。斯奈德和汉森。他们研究了乳酸菌的抗性遗传。X L, pinpinellifolium（王牌）。他们得出结论，抗性是由一个单一的、占主导地位的孟德尔因素决定的。本论文的资深作者，在俄亥俄州农业实验站工作，杂交了L， pinpinellifolium （ace）。160)和i. esculentum var. Bonny Best，但接种实验未能重复Bohn和Tucker报道的结果。采用两种分离的镰刀菌。一株来自俄亥俄州克利夫兰附近一个温室里的一株病株，另一株来自美国农业部的F. L. Wellman博士。在寻求对不同结果的解释时，作者们交换了镰刀菌的培养物。随后在两个试验站进行的调查表明，接种反应的显著差异是由分离株致病性的显著差异引起的。Bohn和Tucker， Wellman和Blaisdell，以及早期测试番茄枯萎真菌分离株致病性的研究者，报告了所研究分离株致病性的差异。然而，据作者所知，尚无关于番茄尖孢镰刀菌的生理特化或生理小种的报道，这些小种具有感染并导致番茄品种枯萎的能力，而这些番茄品种对已知的对敏感品种具有毒力致病性的真菌的其他分离株具有高度抗性。
In 1939 Bohn and Tucker ^ described the resistance of Lycopersicon pimpinellifolium Mill., accession 160, to the tomato wilt fungus, FusaHum oxysporum f. lycopersici (Sacc.) Snyder and Hansen. They ^ ^ studied the inheritance of resistance in L. esculentum Mill. X L, pirnpinellifolium (ace. 160) hybrids and concluded that resistance was governed by a single, dominant Mendelian factor. The senior author of the present paper, working at the Ohio Agricultural Experiment Station, crossed L, pimpinellifolium (ace. 160) and i. esculentum var. Bonny Best, but inoculation experiments failed to duplicate the results reported by Bohn and Tucker. Two fusarium isolates were used. One came from a diseased plant in a glasshouse near Cleveland, Ohio, and the other was obtained from Dr. F. L. Wellman, of the United States Department of Agriculture. In seeking an explanation for the divergent results, cultures of the fusarium were interchanged between the writers. Subsequent investigations carried on at both experiment stations show that the conspicuously different responses to inoculation were caused by marked differences in the pathogenicity of the isolates. Bohn and Tucker ^ and Wellman and Blaisdell ^ ^, as well as earlier investigators who tested the pathogenicity of isolates of the tomato wilt fungus, reported différences in the pathogenicity of the isolates studied. However, there are no reports known to the writers of the occurrence of physiologic specialization or physiologic races of Fusarium oxysporum f. lycopersici with the ability to infect and cause wilting of tomato varieties that are highly resistant to other isolates of the fungus known to be virulently pathogenic to susceptible varieties.