河南农业科学 ›› 2023, Vol. 52 ›› Issue (2): 171-180.DOI: 10.15933/j.cnki.1004-3268.2023.02.019

• 农业信息与工程·农产品加工 • 上一篇    

高通量测序技术分析鲜食花生贮藏过程中真菌群落的的组成和变化

杨慧,路风银,韩俊豪,谢永康,尚朝杰,李星仪   

  1. (河南省农业科学院农副产品加工研究中心,河南 郑州 450002)
  • 收稿日期:2022-07-22 出版日期:2023-02-15 发布日期:2023-04-03
  • 通讯作者: 路风银(1968-),男,河南郑州人,研究员,硕士,主要从事农产品产地减损与加工研究。E-mail:LFY1968@163.com
  • 作者简介:杨慧(1986-),女,河南周口人,助理研究员,硕士,主要从事农产品贮藏保鲜与加工研究。E-mail:360150804@qq.com
  • 基金资助:
    河南省科技攻关计划项目(212102110202,212102110232);河南省农业科学院基本科研业务费项目(2022ZC61);河南省农业科学院优秀青年科技基金项目(2022YQ23)

Analysis of the Composition and Changes of Fungal Community in Fresh Peanut during Storage Based on High‑throughput Sequencing

YANG hui,LU Fengyin,HAN Junhao,XIE Yongkang,SHANG Chaojie,LI Xingyi   

  1. (Agricultural Products Processing Center,Henan Academy of Agricultural Sciences,Zhengzhou 450002,China)
  • Received:2022-07-22 Published:2023-02-15 Online:2023-04-03

摘要: 为探究鲜食花生在贮藏过程中真菌群落的动态变化规律,采用高通量测序技术分别对常温(25±1)℃、冷藏(4±1)℃环境下鲜食花生的真菌rRNA基因ITS1、ITS2区进行测序。结果显示,在贮藏过程中,2组鲜食花生中共鉴定出8个门、28个纲、62个目、115个科、196个属、302种真菌。多样性分析表明,常温组真菌群落多样性与丰富度均高于冷藏组,冷藏组与常温组真菌结构存在差异,冷藏组不同贮藏时间真菌结构存在一定差异,常温不同贮藏时间(除30 d外)真菌组成结构较为相似。属水平上,镰孢菌属(Fusarium)、未知真菌(unclassified_Fungi)和赤霉属(Gibberella)是冷藏组鲜食花生主要优势菌属,未分类的子囊菌属(unclassified_Ascomycota)、小不整球壳属(Plectosphaerella)、链格孢属(Alternaria)与被孢霉属(Mortierella)是常温组鲜食花生贮藏过程中的优势菌属。差异关键菌群LEfSe分析表明,在种水平上冷藏组与常温组共有66种真菌具有显著性差异。可见,低温贮藏对鲜食花生中真菌微生物具有良好的抑制作用,并降低了冷藏期间微生物菌群的多样性。

关键词: 鲜食花生, 贮藏, 真菌, 多样性, 高通量测序

Abstract: In order to explore the dynamic changes of fungal community in fresh peanut during storage,the ITS1 and ITS2 regions of fungal rRNA genes in fresh peanut under normal temperature(25±1)℃ andcold storage(4±1)℃ were sequenced by high‑throughput sequencing technology.The results showed that 302 fungi belonging to 8 phyla,28 classes,62 orders,115 families and 196 genera were identified in the two groups of fresh peanut during storage. The diversity analysis showed that the diversity and richness of fungal community in the normal temperature group were higher than those in the cold storage group.There were differences in fungal structure between the cold storage group and the normal temperature group.There were certain differences in fungal structure among different time of the cold storage group.The fungal composition structure was similar among different time of the normal temperature storage group(except for 30 days).At the genus level,Fusarium,unclassified_Fungi and Gibberella were the main dominant genera of fresh peanut in the cold storage group. Unclassified_Ascomycota,PlectosphaerellaAlternaria and Mortierella were the dominant genera of fresh peanut in the normal temperature group during storage. LEfSe analysis showed that 66 species of fungi were significantly different in the cold storage group and the normal temperature group at the species level.In conclusion,low temperature storage has good inhibitory effect on fungal microorganisms in fresh peanut and reduces the diversity of microbial flora during cold storage.

Key words: Fresh peanut, Storage, Fungus, Diversity, High?throughput sequencing technology

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