Journal
MYCOLOGICAL PROGRESS
Volume 11, Issue 3, Pages 655-688Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s11557-011-0777-7
Keywords
Cylindrocarpon root rot; Nectria-like fungi; Phylogeny; Systematics
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Funding
- Fundacao para a Ciencia e a Tecnologia, Portugal [SFRH/BD/24790/2005, PTDC/AGR-AAM/099324/2008]
- Fundação para a Ciência e a Tecnologia [PTDC/AGR-AAM/099324/2008, SFRH/BD/24790/2005] Funding Source: FCT
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Ilyonectria radicicola and its Cylindrocarpon-like anamorph represent a species complex that is commonly associated with root rot disease symptoms on a range of hosts. During the course of this study, several species could be distinguished from I. radicicola sensu stricto based on morphological and culture characteristics. DNA sequence analysis of the partial beta-tubulin, histone H3, translation elongation factor 1-alpha and nuclear ribosomal RNA-Internal Transcribed Spacer (nrRNA-ITS) genes were employed to provide further support for the morphological species resolved among 68 isolates associated with root rot disease symptoms. Of the various loci screened, nrRNA-ITS sequences were the least informative, while histone H3 sequences were the most informative, resolving the same number of species as the combined dataset across the four genes. Within the Ilyonectria radicicola species complex, 12 new taxa are delineated occurring on a diverse range of hosts, the most common being Cyclamen, Lilium, Panax, Pseudotsuga, Quercus and Vitis.
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