What is Johansonia?
IMA Fungus, 2010/12;1(2):117-22.
Crous PW[1], Barreto RW, Alfenas AC, Alfenas RF, Groenewald JZ
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PMID: 22679570
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Abstract
The bitunicate ascomycete genus Johansonia is presently treated as a member of Saccardiaceae, a family regarded as incertae sedis within the Ascomycota. Recent collections on leaves of a leguminous host, Dimorphandramollis, in Mato Grosso, Brazil, led to the discovery of a new species of Johansonia, described here as J.chapadiensis. Based on DNA sequence data of the nuclear ribosomal DNA (LSU), Johansonia is revealed to represent a member of Dothideomycetes, Capnodiales. Although its family could not be resolved, it clustered basal to Schizothyriaceae and Mycosphaerellaceae, and could well represent a species of Saccardiaceae. DNA sequence data of other members of Saccardiaceae would be required, however, to confirm this classification.
Keywords: Dothideomycetes; ITS; Johansoniella; LSU; systematics
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