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Fusarium spp. associated with ambrosia beetles on Acacia crassicarpa in Indonesia
Dissertation (MSc (Genetics))--University of Pretoria, Pretoria, 2020.
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| Format: | Thesis |
| Language: | English |
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University of Pretoria
2020
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| _version_ | 1867613514379558912 |
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| access_status_str | Open Access |
| author2 | Barnes, Irene |
| author_browse | Barnes, Irene |
| author_facet | Barnes, Irene |
| collection | Thesis |
| dc_rights_str_mv | © 2019 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MSc (Genetics))--University of Pretoria, Pretoria, 2020. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/75518 |
| institution | University of Pretoria (South Africa) |
| language | English |
| last_indexed | 2026-06-10T12:37:21.635Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/75518 Fusarium spp. associated with ambrosia beetles on Acacia crassicarpa in Indonesia Barnes, Irene u14049423@tuks.co.za Wingfield, Michael J. De Beer, Z. Wilhelm Durán, Alvaro Lynn, Kira Mary Theresa UCTD Genetics Dissertation (MSc (Genetics))--University of Pretoria, Pretoria, 2020. Ambrosia beetle-related diseases have increased in prevalence globally and threaten agricultural, forestry and urban landscapes. In Riau, Indonesia, a recent outbreak of ambrosia beetle infestations on exotic Acacia crassicarpa plantations, has resulted in a decrease in wood quality and yields of affected hosts. The aim of this study was to identify the ambrosia beetle species responsible for the damage, as well as their corresponding fungal associates. Beetles were extracted from three moderately infested 2 -3 year old A. crassicarpa trees collected from five geographically separated compartments. Morphological identification and phylogenetic analyses of the mitochondrial cytochrome oxidase c subunit I (COI) gene, confirmed that the primary borer Euwallacea perbrevis and the secondary borer Euwallacea similis are the most abundant beetles infesting the plantations. Fungal isolates were either obtained by direct isolation from the mycangia of mature female beetles or by culturing from the surfaces of the beetle galleries. Multi-locus phylogenetic analyses of the fungal isolates revealed a non-specific association of these two ambrosia beetles with seven novel Fusarium spp. Five of which reside within the Ambrosia Fusarium Clade (AFC) within clade 3 of the Fusarium solani species complex (FSSC) and remaining two novel species falling outside the AFC but still grouping with the larger FSSC. These seven species have been formally described within this dissertation. Tree Protection and Cooperation Programme (TPCP) and the National Research Foundation (NRF, SFH170527234109) Forestry and Agricultural Biotechnology Institute (FABI) MSc (Genetics) Unrestricted 2020-07-31T06:36:10Z 2020-07-31T06:36:10Z 2020-09 2020-04 Dissertation * S2020 http://hdl.handle.net/2263/75518 en © 2019 University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | UCTD Genetics Fusarium spp. associated with ambrosia beetles on Acacia crassicarpa in Indonesia |
| title | Fusarium spp. associated with ambrosia beetles on Acacia crassicarpa in Indonesia |
| title_full | Fusarium spp. associated with ambrosia beetles on Acacia crassicarpa in Indonesia |
| title_fullStr | Fusarium spp. associated with ambrosia beetles on Acacia crassicarpa in Indonesia |
| title_full_unstemmed | Fusarium spp. associated with ambrosia beetles on Acacia crassicarpa in Indonesia |
| title_short | Fusarium spp. associated with ambrosia beetles on Acacia crassicarpa in Indonesia |
| title_sort | fusarium spp associated with ambrosia beetles on acacia crassicarpa in indonesia |
| topic | UCTD Genetics |
| url | http://hdl.handle.net/2263/75518 |