高级检索

    原烟仓储养护过程中真菌群落变化动态研究

    Composition and Alteration of Fungal Community during Storage and Maintenance Process of Raw Tobacco

    • 摘要: 为探讨原烟仓储养护过程中的真菌群落变化,以福建、云南和河南3个不同产地C3F等级原烟样品为研究对象,分别贮存于福建、云南、河南三地,于0~12个月内进行采样,对原烟表面真菌群落进行高通量测序与分析。结果表明:(1)云南马龙C3F-2018原烟样品真菌群落物种丰富度与多样性最高;不同产地原烟真菌群落多样性和丰富度随贮存时间的延长均呈先上升后下降的趋势,6~8个月达到峰值,且达到峰值的时间受贮存地点环境影响。(2)各产地原烟样品表面的真菌主要归属于子囊菌门(Ascomycota)、担子菌门(Basidiomycota)、被孢霉门(Mortierellomycota)和毛霉门(Mucoromycota)4个门,原烟醇化过程中优势真菌为子囊菌门、担子菌门;福建、云南、河南产地原烟表面可鉴定菌属数量分别为19种、22种和16种,其中主要潜在致霉菌种类为曲霉属(Aspergillus)、耐干霉菌属(Xeromyces)和Sampaiozyma、链格孢属(Alternaria)。本研究结果对于原烟霉变产生机理和防控具有指导意义。

       

      Abstract: To investigate the alternation of fungal microbial community during the storage and maintenance of raw tobacco, the raw tobacco of C3F grade, obtained from and stored in Fujian, Yunnan, and Henan Province consistently or separately, were sampled every 2 months in a year of storage, and high-throughput sequencing was used to analyze fungal community on the surface of raw tobacco. The results showed as the follows. (1) The most abundant species richness and diversity of fungal community occurred in the samples of C3F-2018 from Malong, Yunnan. The fungal community diversity and richness of raw tobacco in different production areas increased at first and then decreased with the extension of storage time, peaking at 6-8 months, and the peaking time was affected by the environment of the storage position. (2) Fungi on the surface of raw tobacco from different production region mainly belonged to four phyla, i.e., Ascomycota, Basidiomycota, Mortierellomycota, and Mucormycota, among which Ascomycota and Basidiomycota were the dominant phyla in the aging process. The numbers of identifiable genera on the surface of raw tobacco from Fujian, Yunnan, and Henan were 19, 22, and 16, respectively, of which the predominant mold belonged to Aspergillus, Xeromyces, Sampaiozyma, Alternaria. This study provide guidance for the mechanism and control of raw tobacco molding.

       

    /

    返回文章
    返回