Vol 4: Luteocirrhus shearii gen. sp. nov. Diaporthales, Cryphonectriaceae pathogenic to Proteaceae in the South Western Australian Floristic Region.Reportar como inadecuado



 Vol 4: Luteocirrhus shearii gen. sp. nov. Diaporthales, Cryphonectriaceae pathogenic to Proteaceae in the South Western Australian Floristic Region.


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This article is from IMA Fungus, volume 4.AbstractMorphological and DNA sequence characteristics of a pathogenic fungus isolated from branch cankers in Proteaceae of the South West Australian Floristic Region elucidated a new genus and species within Cryphonectriaceae Diaporthales. The pathogen has been isolated from canker lesions in several Banksia species and Lambertia echinata subsp. citrina, and is associated with a serious decline of the rare B. verticillata. Lack of orange pigment in all observed structures except cirrhi, combined with pulvinate to globose black semi-immersed conidiomata with paraphyses, distinguishes the canker fungus from other genera of Cryphonectriaceae. This was confirmed by DNA sequence analysis of the ITS regions, β-tubulin, and LSU genes. The fungus sexual morph unknown is described as Luteocirrhus shearii gen. sp. nov. Lesions in seedlings of Banksia spp. following wound inoculation and subsequent recovery confirm Koch’s postulates for pathogenicity. This pathogen of native Proteaceae is currently an emerging threat, particularly toward B. baxteri and B. verticillata.



Autor: Crane, Colin; Burgess, Treena I.

Fuente: https://archive.org/







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