Novel species of Gliocladiopsis (Nectriaceae, Hypocreales, Ascomycota) from avocado roots (Persea americana) in Australia

Parkinson, Louisamarie E. and Shivas, Roger G. and Dann, Elizabeth K. (2017) Novel species of Gliocladiopsis (Nectriaceae, Hypocreales, Ascomycota) from avocado roots (Persea americana) in Australia. Mycoscience, 58 (2). pp. 95-102. ISSN 1340-3540

Abstract

Root rot of avocado (Persea americana) is an important disease in seedling nurseries as well as in the field in eastern and southern Australia. During an investigation into the causal organisms of avocado root rot, 19 isolates of Gliocladiopsis were obtained from necrotic lesions on avocado roots and examined by morphology and comparison of DNA sequences from three gene loci (the internal transcribed spacer region of the nuclear rDNA, Histone H3 and β-tubulin). Three new species of Gliocladiopsis are described as a result of phylogenetic analysis of these data. One of the new species, G. peggii, formed a monophyletic group that may represent an unresolved species complex as it contained a polytomy that included a well-supported clade comprising two subclades. Gliocladiopsis peggii is sister to G. mexicana, which is known from soil in Mexico. The remaining two new species, G. whileyi and G. forsbergii, formed a clade sister to G. curvata, which is known from Ecuador, Indonesia and New Zealand.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Files associated with this item cannot be displayed due to copyright restrictions.
Faculty / Department / School: No Faculty
Date Deposited: 23 Oct 2017 04:30
Last Modified: 18 Apr 2018 00:54
Uncontrolled Keywords: Lauraceae; phylogeny; rhizosphere; taxonomy
Fields of Research : 07 Agricultural and Veterinary Sciences > 0703 Crop and Pasture Production > 070308 Crop and Pasture Protection (Pests, Diseases and Weeds)
06 Biological Sciences > 0607 Plant Biology > 060799 Plant Biology not elsewhere classified
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970107 Expanding Knowledge in the Agricultural and Veterinary Sciences
Identification Number or DOI: 10.1016/j.myc.2016.10.004
URI: http://eprints.usq.edu.au/id/eprint/31326

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