Počet záznamů: 1  

Geosmithia morbida sp nov., a new phytopathogenic species living in symbiosis with the walnut twig beetle (Pityophthorus juglandis) on Juglans in USA

  1. 1.
    0441240 - MBÚ 2015 RIV US eng J - Článek v odborném periodiku
    Kolařík, Miroslav - Freeland, E.
    Geosmithia morbida sp nov., a new phytopathogenic species living in symbiosis with the walnut twig beetle (Pityophthorus juglandis) on Juglans in USA.
    Mycologia. Roč. 103, č. 2 (2011), s. 325-332. ISSN 0027-5514. E-ISSN 1557-2536
    Grant CEP: GA ČR GP206/08/P322
    Výzkumný záměr: CEZ:AV0Z50200510
    Klíčová slova: Geosmithia * insect-associated fungi * thousand cankers disease
    Kód oboru RIV: EE - Mikrobiologie, virologie
    Impakt faktor: 2.031, rok: 2011

    Widespread morbidity and mortality of Juglans nigra has occurred in the western USA over the past decade. Tree mortality is the result of aggressive feeding by the walnut twig beetle (Pityophthorus juglandis) and subsequent canker development around beetle galleries caused by a filamentous ascomycete in genus Geosmithia (Ascomycota: Hypocreales). Thirty-seven Geosmithia strains collected from J. californica, J. hindsii, J .major and J. nigra in seven USA states (AZ, CA, CO, ID, OR, UT, WA) were compared with morphological and molecular methods (ITS rDNA sequences). Strains had common characteristics including yellowish conidia en masse, growth at 37 C and absence of growth on Czapek-Dox agar and belonged to a single species described here as G. morbida. Whereas Geosmithia are common saprobes associated with bark beetles attacking hardwoods and conifers worldwide, G. morbida is the first species documented as a plant pathogen.
    Trvalý link: http://hdl.handle.net/11104/0244265

     
     
Počet záznamů: 1  

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