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首页> 美国卫生研究院文献>other >A Novel Approach of Preventing Japanese Cedar Pollen Dispersal That Is the Cause of Japanese Cedar Pollinosis (JCP) Using Pollen-Specific Fungal Infection
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A Novel Approach of Preventing Japanese Cedar Pollen Dispersal That Is the Cause of Japanese Cedar Pollinosis (JCP) Using Pollen-Specific Fungal Infection

机译：利用花粉特异性真菌感染预防日本雪松花粉散播的新方法日本雪松花粉病是引起日本雪松花粉病的原因。

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摘要

In Japan, Japanese cedar pollen dispersal is one of the major causes of pollinosis. Sydowia japonica is an ascomycetous fungus that grows exclusively on the male strobili of Japanese cedar, suggesting a possible mechanism for controlling pollen dispersal. To evaluate this possibility, eleven isolates of S. japonica were collected from around Japan and used as an inoculum to male strobili of Japanese cedar. The treatment demonstrated that the fungus infected only the pollen and prevented pollen dispersal. The fungus did not cause any additional symptoms to other parts of Japanese cedar, such as needles, stems, and buds. All S. japonica isolates collected around Japan could serve to control pollen dispersal. Periodic observation of the fungal pathogenesis with stereomicroscope and scanning electron microscope showed that hyphal fragments and conidia of S. japonica germinated on the surface of male strobili, and the germ tube entered pollen sacs through opening microsporophylls. Within the pollen sacs, the hyphae penetrated pollen gradually, such that all pollen was infected by the fungus by approximately one month before the pollen dispersal season. The infected pollen was destroyed due to the fungal infection and was never released. Our data suggests a novel approach of preventing pollen dispersal using pollen-specific fungal infection.
机译：在日本，雪松的花粉扩散是造成花粉病的主要原因之一。 Sydowia japonica是一种仅在日本雪松的雄性可口可乐中生长的子囊真菌，提示控制花粉扩散的可能机制。为了评估这种可能性，从日本各地收集了11种日本粳稻分离株，并将其用作日本雪松雄性可育性的接种物。处理表明该真菌仅感染花粉并阻止了花粉扩散。该真菌未对日本雪松的其他部位（如针，茎和芽）造成任何其他症状。在日本各地收集的所有日本粳稻分离株都可以用来控制花粉的扩散。通过体视显微镜和扫描电镜对真菌的致病机理进行定期观察，结果表明日本粳稻的菌丝碎片和分生孢子发芽在雄性球菌的表面，并且胚芽管通过打开微孢子囊进入花粉囊。在花粉囊内，菌丝逐渐渗透到花粉中，因此所有花粉在花粉散布季节之前约一个月就被真菌感染。受感染的花粉由于真菌感染而被破坏，并且从未释放。我们的数据表明使用花粉特异性真菌感染防止花粉扩散的一种新方法。

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