Impact of Austropuccinia psidii (myrtle rust) on Myrtaceae-rich wet sclerophyll forests in south east Queensland

Geoff Pegg; Tamara Taylor; Peter Entwistle; Gordon Guymer; Fiona Giblin; Angus Carnegie

doi:10.1371/journal.pone.0188058

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Impact of Austropuccinia psidii (myrtle rust) on Myrtaceae-rich wet sclerophyll forests in south east Queensland

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Impact of Austropuccinia psidii (myrtle rust) on Myrtaceae-rich wet sclerophyll forests in south east Queensland

Geoff Pegg, Tamara Taylor, Peter Entwistle, Gordon Guymer, Fiona Giblin and Angus Carnegie

PloS one, Vol.12(11), 0188058

21/11/2017

DOI: https://doi.org/10.1371/journal.pone.0188058

PMID: 29161305

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Abstract

In April 2010, Austropuccinia psidii (formerly Puccinia psidii) was detected for the first time in Australia on the central coast of New South Wales. The fungus spread rapidly along the east coast and can now be found infecting vegetation in a range of native forest ecosystems with disease impacts ranging from minor leaf spots to severe shoot and stem blight and tree dieback. Localised extinction of some plant species has been recorded. In 2014, the impact of A. psidii was observed for the first time in a wet sclerophyll site with a rainforest under-story, dominated by species of Myrtaceae, in Tallebudgera Valley, south east Queensland, Australia. This study aimed to determine the impact of A. psidii on individual species and species composition. Here we provide quantitative and qualitative evidence on the significant impact A. psidii has in native ecosystems, on a broader range of species than previously reported. Archirhodomyrtus beckleri, Decaspermum humile, Gossia hillii and Rhodamnia maideniana are in serious decline, with significant increases in tree mortality over the period of our study. This research further highlights the potential of this invasive pathogen to negatively impact native ecosystems and biodiversity.

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Title: Impact of Austropuccinia psidii (myrtle rust) on Myrtaceae-rich wet sclerophyll forests in south east Queensland
Creators: Geoff Pegg - Department of Agriculture and Fisheries
Tamara Taylor - Griffith University
Peter Entwistle - North East Agriculture Services (New South Wales)
Gordon Guymer - Queensland Herbarium
Fiona Giblin - Department of Agriculture and Fisheries
Angus Carnegie - NSW Department of Primary Industries
Publication Details: PloS one, Vol.12(11), 0188058
Publisher: Public Library of Science
Number of pages: 19
Grant note: Australian Government's Cooperative Research Centres Program; Australian Government; Department of Industry, Innovation and Science; Cooperative Research Centres (CRC) Programme CRC2063 / Plant Biosecurity Cooperative Research Centre
Identifiers: 991013176792602368
Academic Unit: Faculty of Science and Engineering
Language: English
Resource Type: Journal article

Impact of Austropuccinia psidii (myrtle rust) on Myrtaceae-rich wet sclerophyll forests in south east Queensland

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