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首页> 外文期刊>Mycologia >Potential for outcrossing in an apparently asexual population of Fusarium circinatum, the causal agent of pitch canker disease
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Potential for outcrossing in an apparently asexual population of Fusarium circinatum, the causal agent of pitch canker disease

机译：圆角镰刀菌（无性病）的明显无性种群中有异性交配的可能性

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摘要

Fusarium circinatum (teleomorph = Gibberella circinata) is responsible for the current epidemic affecting pine trees in native and urban forests along California's central coast. Only eight vegetative compatibility groups have been recovered from samples collected throughout the pathogen's range in California. This low level of diversity is suggestive of an asexually propagating population. However, crosses conducted in the laboratory on carrot agar;as well as on Monterey pine (Pinus radiata) twigs, reveal that California strains of the fungus are capable of undergoing sexual reproduction. Outcrossing was confirmed by demonstrating vegetative incompatibility between the progeny and their parents. These results indicate that sexual reproduction is possible within the California population of the pitch canker pathogen. [References: 19]
机译：镰刀菌（Fusarium circinatum）（teleomorph =赤霉菌）是造成当前影响加利福尼亚中部沿海原生和城市森林中的松树的流行病的原因。从加利福尼亚州整个病原体范围内收集的样品中仅恢复了八个营养相容性组。这种低水平的多样性暗示了无性繁殖的人群。但是，在实验室中对胡萝卜琼脂和蒙特雷松（Pinus radiata）的嫩枝进行的杂交显示，加利福尼亚的真菌菌株能够进行有性繁殖。通过证明后代与其父母之间的营养不相容性来证实异种交配。这些结果表明，在性传播性溃疡病原体的加利福尼亚种群内，有性生殖是可能的。 [参考：19]

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