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  • Title: Diversity and spatial distribution of endophytic fungi in Cinnamomum longepaniculatum of Yibin, China.
    Author: Zhou W, Wei Q, Feng R, Liu Y, Liang H, Li J, Yan K.
    Journal: Arch Microbiol; 2021 Aug; 203(6):3361-3372. PubMed ID: 33877389.
    Abstract:
    Cinnamomum longepaniculatum (Gamble) N. Chao is an important woody incense plant that contains volatile terpenoids and has been extensively cultivated in Yibin, China. However, the relationship between endophytic fungal diversity and C. longepaniculatum species remains unclear. Here, fungal taxa in different tissue samples were analyzed using Illumina-based sequencing of ITS1 region of fungal rDNA genes. Results showed that 476 OTUs were identified in all tissues of C. longepaniculatum, with 78 OTUs common among all tissues. Similarity cluster analysis indicated that these OTUs belong to 5 phyla and at least 18 genera, with a large number of OTUs remaining unidentified at family and genus levels. The fungal community in seeds exhibited the greatest richness and diversity, followed by those in branches, leaves, and roots, respectively. Unclassified Chaetosphaeriales (91.66%), Passalora (57.17%), and unclassified Ascomycota (58.79%) OTUs dominated in root, branch, and leaf communities, respectively, and other common groups in the branch community included unclassified Ascomycota (12.13%), Houjia (10.38%), and Pseudoveronaea (5.43%), whereas other common groups in leaf community included Passalora (11.43%) and Uwebraunia (8.58%). Meanwhile, the seed community was dominated by unclassified Ascomycota (16.98%), unclassified Pleosporaceae (15.46%), and Talaromyces (12.50%) and also included high proportions of unclassified Nectriaceae (7.68%), Aspergillus (6.95%), Pestalotiopsis (6.02%), and Paraconiothyrium (5.11%) and several seed-specific taxa, including Peniophora, Cryptodiscus, and Penicillium. These findings suggest that Yibin-native C. longepaniculatum harbors rich and diverse endophytic communities that may represent an underexplored reservoir of biological resources.
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