›› 2020, Vol. 32 ›› Issue (6): 1019-1028.DOI: 10.3969/j.issn.1004-1524.2020.06.10

• Plant Protection • Previous Articles     Next Articles

Fungal composition and diversity analysis of healthy and rotten tobacco leaves after curing

CHEN Qianli1,2, WANG Hancheng2, LIANG Yongjin3, *, CAI Liuti2, HUANG Yu1,2, ZHOU Hao4, LI Zhong1, HAN Jie5   

  1. 1. College of Agriculture, Guizhou University, Guiyang 550025, China;
    2. Guizhou Academy of Tobacco Science, Guiyang 550081, China;
    3. Guangxi Zhongyan Industry Co. Ltd., Nanning 530001, China;
    4. College of Life Sciences, Yangtze University, Jingzhou 434025, China;
    5. College of Basic Medical Sciences, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China
  • Received:2019-10-10 Online:2020-06-25 Published:2020-06-24

Abstract: To explore difference of the fungal community composition of healthy and rotten tobacco leaves after curing, the fungal community composition of both healthy and tobacco pole rot samples from flue-cured tobacco leaves were investigated by using PCR amplification of the ITS1-ITS2 region. The amplified fragments were sequenced using Illumina Miseq high-throughput sequencing technique. It was shown that the fungi from healthy tobacco (MJ), rotten tobacco (MB) were distributed in 6 phyla (Ascomycota, Basidiomycota, Zygomycota, etc), 25 classes, 58 orders, 187 families, 260 genera and 394 fungal taxa (OTUs). The dominant genus of MJ was Alternaria, followed by Aspergillus, Neocamarosporium, Gibberella and Acremonium. For MB, the dominant genus was Aspergillus, followed by Penicillium and Rhizopus. Alpha index showed that the fungal community richness and diversity of MJ were higher than those of MB. Additionally, functional assignments were made, the results showed that 71.06% of total OTUs belonged to eight trophic modes, of which saprotroph was the main group. The results of this study revealed the community structure of healthy and rotten tobacco leaves after curing and provided reference basis for formulating the corresponding control plan.

Key words: rotten tobacco leaf, fungal ITS area, community structure, Illumina high throughput sequencing

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