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欧美杨新型溃疡病病株与健株干部树皮中真、细菌优势种群分析

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Keywords: 欧美杨,溃疡病,16SrRNA,优势种群

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Abstract:

为探讨感染欧美杨新型溃疡病的中林46杨植株干部病斑中真、细菌优势种类,本研究对河南省濮阳市中林46杨健株、病株染病组织的可培养真菌、细菌优势种群进行了分析。结果表明:健康树皮样品分离真菌优势种群均为Alternaria alternata,染病株样品优势种群均为Fusarium solani,而且其菌株数量占所分离菌株总数的百分比均在85%以上;而在健康株3个处理中分离的细菌优势种群种类不同,仅Microbacterium在健株3个处理树皮样品中均有分布,但染病株3个处理树皮样品中的细菌优势种群均为Lonsdalea quercina,其菌株数量占所分离菌株总数的百分比均在67%以上。以上结果表明:中林46杨发病以后,F.solani和L. quercina分别变成了真菌和细菌的优势种群。

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