Genetic recombination in Teratosphaeria destructans causing a new disease outbreak in Malaysia

Minette Havenga; Brenda D Wingfield; Michael J Wingfield; Seonju Marincowitz; Léanne L Dreyer; Francois Roets; Yani Japarudin; Janneke Aylward

doi:10.1111/efp.12683

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Genetic recombination in Teratosphaeria destructans causing a new disease outbreak in Malaysia

Journal article

Peer reviewed

Genetic recombination in Teratosphaeria destructans causing a new disease outbreak in Malaysia

Minette Havenga, Brenda D Wingfield, Michael J Wingfield, Seonju Marincowitz, Léanne L Dreyer, Francois Roets, Yani Japarudin and Janneke Aylward

Forest pathology, Vol.51(3), pp.1-9

2021

DOI: https://doi.org/10.1111/efp.12683

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Abstract

heterothallic

mating type

microsatellite markers

population genetics

sexual reproduction

The Eucalyptus foliar pathogen Teratosphaeria destructans causes severe and widespread damage in South-East Asian and South African plantations. In 2016, leaf blight symptoms resembling those caused by T. destructans were observed in a plantation of a Eucalyptus grandis × E. urophylla hybrid in Sabah, Malaysia. The aims of this study were to confirm the identity of the causal agent as T. destructans and to investigate the genetic structure of isolates associated with this newly detected disease outbreak. Using sequence data of three gene regions, the identity of the pathogen was confirmed as T. destructans. The mating type and microsatellite genotypes of 41 isolates from this Malaysian population were identified and compared with those from previously characterized populations in South-East Asia and South Africa. The Malaysian population had the highest genotypic diversity of any T. destructans population thus far investigated. Both the mating types were found in the collection of isolates, and these were in approximately equal proportions. Although structures linked to a sexual state of the fungus have not been found, sexual reproduction is theoretically possible and could explain the high genetic diversity in the pathogen that must have been accidentally introduced into Malaysia. This is the first record of T. destructans in Sabah and, to the best of our knowledge, in also other parts of Borneo.

Details

Title: Genetic recombination in Teratosphaeria destructans causing a new disease outbreak in Malaysia
Authors: Minette Havenga (Corresponding Author) - University of Pretoria
Brenda D Wingfield (Author) - University of Pretoria
Michael J Wingfield (Author) - University of Pretoria
Seonju Marincowitz (Author) - University of Pretoria
Léanne L Dreyer (Author) - Stellenbosch University
Francois Roets (Author) - Stellenbosch University
Yani Japarudin (Author) - University of the Sunshine Coast, Queensland, Forest Industries Research Centre
Janneke Aylward (Author) - University of Pretoria
Publication details: Forest pathology, Vol.51(3), pp.1-9
Publisher: Wiley-Blackwell Verlag GmbH
DOI: 10.1111/efp.12683
ISSN: 1439-0329
Organisation Unit: University of the Sunshine Coast, Queensland; School of Business and Creative Industries
Language: English
Record Identifier: 99518607602621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Forestry

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