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Multigene phylogeny and mating tests reveal three cryptic species related to Calonectria pauciramosa

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Author(s): L. Lombard | P.W. Crous | B.D. Wingfield | M.J. Wingfield

Journal: Studies in Mycology
ISSN 0166-0616

Volume: 66;
Issue: 1;
Start page: 15;
Date: 2010;
Original page

Keywords: Calonectria | plant pathogens | sexual compatibility | systematics

ABSTRACT
Calonectria pauciramosa is a pathogen of numerous plant hosts worldwide. Recent studies have indicated that it included cryptic species, some of which are identified in this study. Isolates from various geographical origins were collected and compared based on morphology, DNA sequence data of the β-tubulin, histone H3 and translation elongation factor-1α regions and mating compatibility. Comparisons of the DNA sequence data and mating compatibility revealed three new species. These included Ca. colombiana sp. nov. from Colombia, Ca. polizzii sp. nov. from Italy and Ca. zuluensis sp. nov. from South Africa, all of which had distinguishing morphological features. Based on DNA sequence data, Ca. brasiliensis is also elevated to species level
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