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Recent observations of sooty bark disease of sycamore maple in P rague ( C zech R epublic) and the phylogenetic placement of C ryptostroma corticale
Author(s) -
Koukol O.,
Kelnarová I.,
Černý K.
Publication year - 2015
Publication title -
forest pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.535
H-Index - 49
eISSN - 1439-0329
pISSN - 1437-4781
DOI - 10.1111/efp.12129
Subject(s) - phylogenetic tree , biology , outbreak , bark (sound) , botany , plant disease , gene , genetics , ecology , virology , microbiology and biotechnology
Summary The anamorphic fungus C ryptostroma corticale ( X ylariaceae) causing s ooty bark disease ( SBD ) of A cer pseudoplatanus has been reported within the past decade in several E uropean countries. In the last decade, severe drought conditions during summer also resulted in an outbreak of SBD in park areas in P rague ( C zech R epublic). Trees with the typical syndromes were recorded in four localities in P rague. Some trees were also located in the alluvial plain of the V ltava R iver with groundwater available all year long. We suppose that the trees were stressed by full water saturation for several months after flood in 2012 and that SBD was triggered by anoxia and subsequent phytopththora root rot. Sterile fungi isolated from one tree and one lesion were identified as C . corticale based on the similarity of their ITS r DNA sequences with strains of C . corticale in a public collection. Furthermore, C . corticale was placed in the family X ylariaceae within the genus B iscogniauxia based on phylogenetic analysis of four genes ( ITS nr DNA , actin, RPB 2 and β‐tubulin). The closest relatives are B . bartholomei and G raphostroma platystoma .