4株水果采后链格孢属真菌的rDNA ITS区序列与碳源代谢指纹图谱差异性分析
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(北京工商大学 北京食品营养与人类健康高精尖创新中心, 北京 100048)

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任向峰,男,硕士研究生,研究方向为食品生物技术; *王友升,男,教授,博士,主要从事果蔬绿色保鲜及其高值化方面的研究,通信作者。

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“十二五”国家科技支撑计划项目(2015BAD16B06); 国家自然科学基金资助项目(31271944)。


Comparison of rDNA ITS Sequence and Carbon Metabolic Fingerprinting of Four Alternaria Nees Isolated from Fruits
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(Beijing Advanced Innovation Center for Food Nutrition and Human Health,Beijing Technology and Business University, Beijing 100048, China)

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    摘要:

    从采后贮藏过程中发病的冬枣、樱桃、杏及蓝莓果实中分离到4株丝状病原真菌231#、320#、322#和333#。由形态学特征观察可确定4株病原菌均为链格孢属真菌(Alternaria Nees),rDNA ITS区序列进化树分析结果表明樱桃320#和杏322#与A. alternata (AY625056.1)处于同一分枝,置信度达100%;而蓝莓333#与A. tenuissima (KP324980.1)处于同一分枝,冬枣231#与蓝莓333#和A. tenuissima (KP324980.1)的亲缘性很近,在同一分支上的置信度达100%。对95种碳源的代谢指纹图谱分析的结果表明,4株链格孢属真菌对吐温80、N-乙酰-D-葡萄糖胺、N-乙酰-β-D-甘露糖胺等86种碳源的代谢特征相同,包括78种最适碳源和8种不可利用碳源,其中冬枣231#与A. alternata (Fr.) Keissl的代谢指纹图谱最为相近。4株链格孢属真菌的ITS区序列系统进化树分类与碳源代谢聚类分析结果存在一定差异。

    Abstract:

    Four fungi, strain 231#, 320#, 322#, and 333# were isolated from infected jujube, sweet cherry, apricot, and blueberry fruit. All the fungal pathogens were identified as Alternaria Nees by morphological characterization. Analysis of rDNA ITS sequence showed that strain 320# and 322# were both closely related to A. alternata (AY625056.1). In contrast, strain 231# and 333# showed close phylogenetic relationship with A. tenuissima (KP324980.1). The biolog microbial identification system with FF MicroPlate was applied in the 95 carbon and nitrogen sources utilization tests, and the carbon metabolic fingerprinting showed that four strains have 86 carbon sources in common, including 78 optimal carbon sources and 8 unavailable carbon sources.Moreover, strain 231# was closely related to A. alternata (Fr.) Keissl. There were some difference between rDNA ITS sequence and carbon metabolic profiling of four strains.

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任向峰,姚婷,张萌,张燕,王友升.4株水果采后链格孢属真菌的rDNA ITS区序列与碳源代谢指纹图谱差异性分析[J].食品科学技术学报,2018,36(1):72-78, 94.

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  • 收稿日期:2017-08-12
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  • 在线发布日期: 2018-01-30
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