Analysis of fungal composition in different layers of Bantou agarwoodforming trunk of Aquilaria sinensis revealing presence of Aspergillusinhibiting substances in agarwood sites
Objective: The objective of this study was to analyse fungal composition and exploit application potential in the Bantou (BT) agarwood-forming trunk of Aquilaria sinensis. Methods: BT agarwood is a naturally formed agarwood that was collected after cutting. Total genomic DNA of the fungi in BT agarwood was extracted by the hexadecyltrimethy ammonium bromide (CTAB) method, followed by PCR amplification and library construction. The effective tags were obtained by the HiSeq2500 platform, and the data were subjected to bioinformatics and statistical analyses. Results: A total of 7 850 040 effective tags were obtained, Ascomycota was the most abundant fungus at the phylum level, with a relative abundance of 56.36%–61.44%, followed by Basidiomycota, with a relative abundance of 10.49%–20.39%. Dothideomycetes, Agaricomycetes and Sordariomycetes were dominant at the class level, accounting for 26.21%–33.88%, 8.40%–17.66%, and 18.41%–24.11%, respectively. Lignosphaeria, Phaeoacremonium and Hermatomyces were dominant at the genus level, with relative abundances of 6.25%–7.64%, 1.95%–9.05% and 1.5%–5.4%, respectively. Diversity and richness analysis showed that the fungal composition in the agarwood formation sites (agarwood layer, upper agarwood layer and lower agarwood layer) were significantly lower than those in the decomposing layer and the healthy layer. That is, the fungal diversity and richness were significantly reduced during agarwood formation by the action of open wounds. The fungal community structure in the decomposing layer and agarwood formation sites obviously differed from that in the healthy layer. The number of Aspergillus taxa in agarwood formation sites decreased significantly (healthy layer is 0.5%, decomposing layer is 0.022%, upper agarwood layer is 0.012%, agarwood layer is 0.01%, and lower agarwood layer is 0.013%), indicating that agarwood may contain potential substances to inhibit the growth of Aspergillus. Conclusion: Agarwood from agarwood formation sites contains potential substances that inhibit Aspergillus, which provides valuable information for the control of the genus of Aspergillus.
关键词:
曲霉菌;;沉香;板头香;真菌组成
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Project Supported:
This study was funded by the National Key Research and Development (No. 2022YFC3501504); the Key Project of Research and Development Project of Hainan Province (No. ZDYF2022SHFZ035) and the CAMS Innovation Fund for Medical Sciences (CIFMS) (No. 2021-I2M-1-032).
Xuyu Chen a, Yun Yang a, Yangyang Liu a, Chun Sui b,?, Jianhe Wei a, b,?. Analysis of fungal composition in different layers of Bantou agarwoodforming trunk of Aquilaria sinensis revealing presence of Aspergillusinhibiting substances in agarwood sites[J]. Chinese Herbal Medicines (CHM),2025,17(2):315-321
