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      Novel Fusarium mutualists of two Euwallacea species infesting Acacia crassicarpa in Indonesia.

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          Abstract

          Several species in the Euwallacea fornicatus complex have emerged as important pests of woody plants globally, particularly in habitats where they are invasive aliens. These beetles live in obligate symbioses with fungi in the genus Fusarium. In this study, we identified Euwallacea spp. and their fungal mutualists that have emerged as pests of planted Acacia crassicarpa in Riau, Indonesia. Morphological identification and phylogenetic analyses of the mitochondrial cytochrome oxidase c subunit I (COI) gene confirmed that E. similis and E. perbrevis are the most abundant beetles infesting these trees. Multilocus phylogenetic analyses of their fungal mutualists revealed their nonspecific association with six Fusarium species. These included F. rekanum and five novel Fusarium mutualists within the Fusarium solani species complex (FSSC), four of which reside in the Ambrosia Fusarium Clade (AFC). These new species are described here as F. akasia, F. awan, F. mekan, F. variasi, and F. warna.

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          Author and article information

          Journal
          Mycologia
          Mycologia
          Informa UK Limited
          1557-2536
          0027-5514
          April 10 2021
          : 113
          : 3
          Affiliations
          [1 ] Department of Biochemistry, Genetics and Microbiology, Forestry and Agricultural Biotechnology Institute, University of Pretoria, Private Bag X20, Pretoria, 0028, South Africa.
          [2 ] Plant Health Program, Research and Development, Asia Pacific Resources International Holdings Ltd., Pangkalan Kerinci 28300, Riau, Indonesia.
          Article
          10.1080/00275514.2021.1875708
          33835895
          86d42ebf-621a-4f74-8fe4-fd857a4820a3
          History

          Fusarium,5 new taxa,Ambrosia Fusarium Clade (AFC),Ambrosia beetles,Euwallacea symbiosis

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