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Pathogen causing Phalaenopsis soft rot disease – 16S rDNA and virulence characterisation

机译:导致蝴蝶兰软腐病的病原菌– 16S rDNA和毒力鉴定

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The pathogen causing Phalaenopsis soft rot disease and developed detached leaf inoculation methods were identified. Based on its 16S rDNA sequences, the pathogen causing soft rot disease in Phalaenopsis was Erwinia chrysanthemi/Dickeya chrysanthemi. Both virulent and avirulent strains were revealed. The detached leaf inoculation assay for E. chrysanthemi/D. chrysanthemi resistance evaluation included wounding and inoculating the detached leaf with 108 CFU/ml of bacteria. Soft rot disease symptoms in the inoculated detached leaf were measurable at 20 h after inoculation. The detached leaf assay was applicable for evaluating Phalaenopsis germplasm and progeny resistance in Phalaenopsis breeding programs.
机译:确定了引起蝴蝶兰软腐病的病原体,并开发了分离的叶片接种方法。根据蝴蝶兰的16S rDNA序列,导致蝴蝶兰软腐病的病原体为菊花欧文氏菌/菊花迪卡氏菌。均显示出强毒株和无毒株。菊花E. chrysanthemi / D的离体接种法。菊花的抗药性评估包括用108 CFU / ml的细菌对伤口和伤口进行接种。接种后20 h可以测量接种的离体叶片中的软腐病症状。叶片分离试验可用于评估蝴蝶兰育种程序中的蝴蝶兰种质和后代抗性。

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