Fecha/hora: 16/06/2024 04:51:00

Biblioteca(s): | INIA Las Brujas.
Fecha corriente: | 24/10/2014
Fecha de la última actualización: | 15/10/2019
Autoria: | PÉREZ, C.A.; WINGFIELD, M.J.; SLIPPERS, B.; ALTIER, N.; BLANCHETTE, R.A.
Afiliación: | C.A. PÉREZ, Department of Plant Pathology, University of Minnesota, St. Paul, MN, USA; Departamento de Protección Vegetal, EEMAC, Facultad de Agronomía, Universidad de la República, Paysandú, Uruguay; M.J. WINGFIELD, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria, South Africa; B. SLIPPERS, Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria, South Africa; NORA ADRIANA ALTIER MANZINI, Instituto Nacional de Investigación Agropecuaria (INIA), Uruguay; R.A. BLANCHETTE, Department of Plant Pathology, University of Minnesota, St. Paul, MN, USA.
Título: | Endophytic and canker-associated Botryosphaeriaceae occurring on non-native Eucalyptus and native Myrtaceae trees in Uruguay.
Año de publicación: | 2010
Fuente/Imprenta: | Fungal Diversity, 2010, v. 41 no.1, p. 53-69.
ISSN: | 1560-2745
DOI: | 10.1007/s13225-009-0014-8
Idioma: | Inglés
Notas: | Article history: Received: 19 August 2009 / Accepted: 7 October 2009 / Published online: 15 January 2010.

Contenido:

ABSTRACT.

Species of the Botryosphaeriaceae are important pathogens causing cankers and die-back on many woody plants. In Uruguay, Neofusicoccum eucalyptorum, N. ribis and B. dothidea have previously been associated with stem cankers on plantation-grown Eucalyptus globulus. However, very little is known regarding the occurrence and species diversity of Botryosphaeriaceae in native Myrtaceae forests or what their relationship is to those species infecting Eucalyptus in plantations. The objectives of this study were to identify the Botryosphaeriaceae species present as endophytes or associated with cankers in both introduced and native tree hosts in Uruguay, and to test the pathogenicity of selected isolates obtained from native trees on Eucalyptus. Symptomatic and asymptomatic material was collected countrywide from Eucalyptus plantations and native Myrtaceae trees. Single spore cultures were identified based on conidial morphology and comparisons of DNA sequences of the ITS and EF1-&#945; regions. Six Botryosphaeriaceae species were identified. Botryosphaeria dothidea, N. eucalyptorum and specimens residing in the N. parvum-N. ribis complex were isolated from both introduced Eucalyptus and native Myrtaceae trees, whereas Lasiodiplodia pseudotheobromae was found only on Myrcianthes pungens. Diplodia pseudoseriata sp. nov. and Spencermartinsia uruguayensis sp. nov. are novel species found only on native myrtaceous hosts. Pathogenicity tests showed that isolates obtained from native trees and identified as L. pseudotheobromae, N. eucalyptorum and the N. parvum-N.ribis complex are pathogenic to E. grandis. Interestingly, Lasiodiplodia pseudotheobromae has not previously been found on Eucalyptus in Uruguay and represents a potential threat to this host.
© Kevin D. Hyde 2010.

Thesagro: | AGENTES PATÓGENOS; BOTRYOSPHAERIA; ENFERMEDADES FORESTALES; PATÓGENOS FORESTALES.
Categoría del tema: | K10 Producción forestal
Registro original: | INIA Las Brujas (LB)
Ejemplares: | LB - (100231-1) - PXI - AP - DD - PP/FUNGAL DIVERSITY/2010 -  -  - DIS