Phylogeny of cercosporoid fungi (Mycosphaerellaceae, Mycosphaerellales) from Hawaii and New York reveals novel species within the Cercospora beticola complex

Vaghefi, Niloofar and Shivas, Roger G. and Sharma, Sandeep and Nelson, Scot C. and Pethybridge, Sarah J. (2021) Phylogeny of cercosporoid fungi (Mycosphaerellaceae, Mycosphaerellales) from Hawaii and New York reveals novel species within the Cercospora beticola complex. Mycological Progress, 20 (3). pp. 261-287. ISSN 1617-416X


Abstract

The taxonomy of 44 specimens of cercosporoid fungi from Hawaii and New York, USA, was elucidated through multi-locus phylogenetic analyses of the LSU and ITS regions of the nrDNA as well as partial sequences of the actin, calmodulin, histone H3, and translation elongation factor 1-α genes. Sequences of four additional loci, namely, partial beta-tubulin, glyceraldehyde-3-phosphate dehydrogenase, the second largest subunit of RNA polymerase II, and the cercosporin facilitator protein-encoding gene, were used to resolve evolutionary species boundaries within the Cercospora beticola species complex using concatenated multi-locus phylogenies and the genealogical divergence index (gdi). Four novel Cercospora species, C. americana sp. nov., C. hawaiiensis sp. nov., C. manoa sp. nov., and C. tecta sp. nov. are described. Neocercospora carotae comb. nov. is made for Cercospora apii var. carotae, which is neotypified. Cercospora cf. citrulina and Pseudocercospora ocimi-basilici are reported for the first time in Hawaii. Cercospora beticola, Pluripassalora bougainvilleae, and Pseudocercospora pittospori are confirmed in Hawaii. Strelitziana africana, isolated from leaves of Ipomoea pes-caprae and Bougainvillea sp. affected by Cercospora spp., is reported for the first time in the USA.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version in accordance with the copyright policy of the publisher.
Faculty/School / Institute/Centre: Current - Institute for Life Sciences and the Environment - Centre for Crop Health (24 Mar 2014 -)
Faculty/School / Institute/Centre: Current - Institute for Life Sciences and the Environment - Centre for Crop Health (24 Mar 2014 -)
Date Deposited: 13 Jul 2021 01:47
Last Modified: 13 Jul 2021 01:47
Uncontrolled Keywords: Genealogical divergence index; Neocercospora; Pseudocercospora; Pluripassalora; Strelitziana
Fields of Research (2008): 06 Biological Sciences > 0607 Plant Biology > 060704 Plant Pathology
06 Biological Sciences > 0605 Microbiology > 060505 Mycology
07 Agricultural and Veterinary Sciences > 0703 Crop and Pasture Production > 070308 Crop and Pasture Protection (Pests, Diseases and Weeds)
Fields of Research (2020): 31 BIOLOGICAL SCIENCES > 3107 Microbiology > 310705 Mycology
31 BIOLOGICAL SCIENCES > 3108 Plant biology > 310805 Plant pathology
30 AGRICULTURAL, VETERINARY AND FOOD SCIENCES > 3004 Crop and pasture production > 300409 Crop and pasture protection (incl. pests, diseases and weeds)
Identification Number or DOI: https://doi.org/10.1007/s11557-021-01666-z
URI: http://eprints.usq.edu.au/id/eprint/42734

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