Australia: A Continent Without Native Powdery Mildews? The First Comprehensive Catalog Indicates Recent Introductions and Multiple Host Range Expansion Events, and Leads to the Re-discovery of Salmonomyces as a New Lineage of the Erysiphales
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Article Title | Australia: A Continent Without Native Powdery Mildews? The First Comprehensive Catalog Indicates Recent Introductions and Multiple Host Range Expansion Events, and Leads to the Re-discovery of Salmonomyces as a New Lineage of the Erysiphales |
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ERA Journal ID | 200518 |
Article Category | Article |
Authors | Kiss, Levente (Author), Vaghefi, Niloofar (Author), Bransgrove, Kaylene (Author), Dearnaley, John D. W. (Author), Takamatsu, Susumu (Author), Tan, Yu Pei (Author), Marston, Craig (Author), Liu, Shu-Yan (Author), Jin, Dan-Ni (Author), Adorada, Dante L. (Author), Bailey, Jordan (Author), Cabrera de Alvarez, Maria Graciela (Author), Daly, Andrew (Author), Dirchwolf, Pamela Maia (Author), Jones, Lynne (Author), Nguyen, Thuan Dat (Author), Edwards, Jacqueline (Author), Ho, Wellcome (Author), Kelly, Lisa (Author), Mintoff, Sharl J. L. (Author), Morrison, Jennifer (Author), Nemeth, Mark Z. (Author), Perkins, Sandy (Author), Shivas, Roger G. (Author), Smith, Reannon (Author), Stuart, Kara (Author), Southwell, Ronald (Author), Turaganivalu, Unaisi (Author), Vaczy, Kalman Zoltan (Author), Blommestein, Annie Van (Author), Wright, Dominie (Author), Young, Anthony (Author) and Braun, Uwe (Author) |
Journal Title | Frontiers in Microbiology |
Journal Citation | 11, pp. 1-31 |
Article Number | 1571 |
Number of Pages | 31 |
Year | 2020 |
Publisher | Frontiers Research Foundation |
Place of Publication | Switzerland |
ISSN | 1664-302X |
Digital Object Identifier (DOI) | https://doi.org/10.3389/fmicb.2020.01571 |
Web Address (URL) | https://www.frontiersin.org/articles/10.3389/fmicb.2020.01571/full |
Abstract | In contrast to Eurasia and North America, powdery mildews (Ascomycota, Erysiphales) are understudied in Australia. There are over 900 species known globally, with fewer than currently 60 recorded from Australia. Some of the Australian records are doubtful as the identifications were presumptive, being based on host plant-pathogen lists from overseas. The goal of this study was to provide the first comprehensive catalog of all powdery mildew species present in Australia. The project resulted in (i) an up-to-date list of all the taxa that have been identified in Australia based on published DNA barcode sequences prior to this study; (ii) the precise identification of 117 specimens freshly collected from across the country; and (iii) the precise identification of 30 herbarium specimens collected between 1975 and 2013. This study confirmed 42 species representing 10 genera, including two genera and 13 species recorded for the first time in Australia. In Eurasia and North America, the number of powdery mildew species is much higher. Phylogenetic analyses of powdery mildews collected from Acalypha spp. resulted in the transfer of Erysiphe acalyphae to Salmonomyces, a resurrected genus. Salmonomyces acalyphae comb. nov. represents a newly discovered lineage of the Erysiphales. Another taxonomic change is the transfer of Oidium ixodiae to Golovinomyces. Powdery mildew infections have been confirmed on 13 native Australian plant species in the genera Acacia, Acalypha, Cephalotus, Convolvulus, Eucalyptus, Hardenbergia, Ixodia, Jagera, Senecio, and Trema. Most of the causal agents were polyphagous species that infect many other host plants both overseas and in Australia. All powdery mildews infecting native plants in Australia were phylogenetically closely related to species known overseas. The data indicate that Australia is a continent without native powdery mildews, and most, if not all, species have been introduced since the European colonization of the continent. |
Keywords | host jumps, host-pathogen interactions, invasive species, obligate biotrophs, plant-microbe interactions, rapid evolution |
ANZSRC Field of Research 2020 | 310705. Mycology |
Byline Affiliations | Centre for Crop Health |
Department of Agriculture and Fisheries, Queensland | |
Department of Agriculture, Water and the Environment, Western Australia | |
Jilin Agricultural University, China | |
Department of Primary Industries, New South Wales | |
National University of the Northeast, Argentina | |
Field Crops Research Institute, Vietnam | |
La Trobe University | |
Ministry for Primary Industries, New Zealand | |
Department of Primary Industry and Resources, Northern Territory | |
Hungarian Academy of Sciences, Hungary | |
Secretariat of the Pacific Community, Fiji | |
Eszterházy Károly Catholic University, Hungary | |
Department of Primary Industries and Regional Development, Western Australia | |
University of Queensland | |
Martin Luther University Halle-Wittenberg, Germany | |
Open access url | https://www.frontiersin.org/articles/10.3389/fmicb.2020.01571/full |
Institution of Origin | University of Southern Queensland |
Funding source | Grant ID Australian Department of Agriculture, Water and the Environment |
Funding source | Grant ID University of Southern Queensland |
https://research.usq.edu.au/item/q633q/australia-a-continent-without-native-powdery-mildews-the-first-comprehensive-catalog-indicates-recent-introductions-and-multiple-host-range-expansion-events-and-leads-to-the-re-discovery-of
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