Phylogenetic relationships of graminicolous downy mildews based on cox2 sequence data
Article
Article Title | Phylogenetic relationships of graminicolous downy mildews based on cox2 sequence data |
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ERA Journal ID | 2504 |
Article Category | Article |
Authors | Thines, Marco (Author), Goker, Markus (Author), Telle, Sabine (Author), Ryley, Malcolm (Author), Mathur, Kusum (Author), Narayana, Yaladabagi D. (Author), Spring, Otmar (Author) and Thakur, Ram P. (Author) |
Journal Title | Mycological Research |
Fungal Biology | |
Journal Citation | 112 (3), pp. 345-351 |
Number of Pages | 7 |
Year | 2008 |
Place of Publication | London, United Kingdom |
ISSN | 0953-7562 |
1469-8102 | |
1878-6146 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.mycres.2007.10.010 |
Web Address (URL) | http://www.sciencedirect.com/science/article/pii/S0953756207002432 |
Abstract | Graminicolous downy mildews (GDM) are an understudied, yet economically important, group of plant pathogens, which are one of the major constraints to poaceous crops in the tropics and subtropics. Here we present a first molecular phylogeny based on cox2 sequences comprising all genera of the GDM currently accepted, with both lasting (Graminivora, Poakatesthia, and Viennotia) and evanescent (Peronosclerospora, Sclerophthora, and Sclerospora) sporangiophores. In addition, all other downy mildew genera currently accepted, as well as a representative sample of other oomycete taxa, have been included. It was shown that all genera of the GDM have had a long, independent evolutionary history, and that the delineation between Peronosclerospora and Sclerospora is correct. Sclerophthora was found to be a particularly divergent taxon nested within a paraphyletic Phytophthora, but without support. The results confirm that the placement of Peronosclerospora and Sclerospora in the Saprolegniomycetidae is incorrect. Sclerophthora is not closely related to Pachymetra of the family Verrucalvaceae, and also does not belong to the Saprolegniomycetidae, but shows close affinities to the Peronosporaceae. In addition, all GDM are interspersed throughout the Peronosporaceae s lat., suggesting that a separate family for the Sclerosporaceae might not be justified. |
Keywords | Pennisetum glaucum; Peronosporaceae phylogeny; Sarga; Sorghum bicolour; Zea mays |
ANZSRC Field of Research 2020 | 310705. Mycology |
300409. Crop and pasture protection (incl. pests, diseases and weeds) | |
310410. Phylogeny and comparative analysis | |
Public Notes | © 2007 The British Mycological Society. Published version deposited in accordance with the copyright policy of the publisher. |
Byline Affiliations | Senckenberg Biodiversity and Climate Research Centre, Germany |
Eberhard Karl University of Tübingen, Germany | |
Department of Primary Industries and Fisheries, Queensland | |
Maharana Pratap University of Agriculture and Technology, India | |
University of Agricultural Sciences Dharwad, India | |
International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), India | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q26wy/phylogenetic-relationships-of-graminicolous-downy-mildews-based-on-cox2-sequence-data
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