Disease Prevalence and Symptoms Caused by Alternaria tenuissima and Pestalotiopsis guepinii on Blueberry in Entre Ríos and Buenos Aires, Argentina


About 60% of blueberry (Vaccinium corymbosum) plantations in Argentina are located in the provinces of Entre Ríos and Buenos Aires. Alternaria tenuissima and Pestalotiopsis guepinii have been reported as pathogens of blueberry, causing leaf spots and branch cankers. The aims of this research were to estimate the prevalence of these microorganisms on leaves and fruits taken from crops located in Entre Ríos and Buenos Aires, as well as to differentiate leaf symptoms after target inoculations with each pathogen individually and in mixtures. Both fungi were present in blueberry fields from 2010 to 2013. A. tenuissima was the most prevalent pathogen, as most of the symptoms detected in the fields had been caused by this species. As a result of inoculations on cv. O’Neal, injured tissues showed symptoms before undamaged ones. Leaf symptoms caused by A. tenuissima differed from those caused by P. guepinii because of their predominant reddish color and the absence of drop-off of the central part of the lesions. When inoculated in a mixture, incubation period on leaves was intermediate between the registered for individual inoculations. The leaves showed reddishbrown spots typical of A. tenuissima and dark brown spots typical of P. guepinii, both with red margins. Blight, defoliation and canker symptoms caused in each case were undistinguishable.

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Fernández, R. , Rivera, M. , Varsallona, B. and Wright, E. (2015) Disease Prevalence and Symptoms Caused by Alternaria tenuissima and Pestalotiopsis guepinii on Blueberry in Entre Ríos and Buenos Aires, Argentina. American Journal of Plant Sciences, 6, 3082-3090. doi: 10.4236/ajps.2015.619301.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] Luteyn, J.L. (2002) Diversity, Adaptation, and Endemism in Neotropical Ericaceae: Biogeographical Patterns in the Vaccinieae. The Botanical Review, 68, 55-87.
[2] Bañados, M.P. (2006) Blueberry Production in South America. Acta Horticulturae, 715, 165-172.
[3] Argentinian Blueberry Committee (2015) Statistics.
[4] Bañados, M.P. (2009) Expanding Blueberry Production into Non-Traditional Production Areas: Northern Chile and Argentina, Mexico and Spain. Acta Horticulturae, 810, 439-445.
[5] Ministerio de Relaciones Exteriores (2013) Argentine Food in the World’s Showcase.
[6] Rivadeneira, M.F. and Kirschbaum, D.S. (2011) INTA. Programa Nacional Frutales. Cadena Arándano, INTA.
[7] USDA (2013) Vaccinium corymbosum L. Highbush Blueberry. Plants Profile.
[8] Thomma, B.P.H.J. (2003) Alternaria spp.: From General Saprophyte to Specific Parasite. Molecular Plant Pathology, 4, 225-236. http://dx.doi.org/10.1046/j.1364-3703.2003.00173.x
[9] de Hoog, G.S., Guarro, J., Gené, J. and Figueras, M.J. (2000) Atlas of Clinical Fungi. 2nd Edition, Centraalbureau voor Schimmelcultures, Baarn.
[10] Rotem, J. (1994) The Genus Alternaria. Biology, Epidemiology and Pathogenicity. APS Press, Saint Paul.
[11] Cório da Luz, W. (2012) Micologia Avançada. Volume IIIB. Taxonomia de fungos anamórficos—II. Coelomicetos. RAPP, Passo Fundo.
[12] Maharachchikumbura, S.S.N., Guo, L.D., Chukeatirote, E., Bahkali, A.H. and Hyde, K.D. (2011) Pestalotiopsis Morphology, Phylogeny, Biochemistry and Diversity. Fungal Diversity, 50, 167-187.
[13] Maharachchikumbura, S.S.N., Guo, L.D., Cai, L., Chukeatirote, E., Wu, W.P., Sun, X., Crous, P.W., Bhat, D.J., McKenzie, E.H.C., Bahkali, A.H. and Hyde, K.D. (2012) A Multi-Locus Backbone Tree for Pestalotiopsis, with a Polyphasic Characterization of 14 New Species. Fungal Diversity, 56, 95-129.
[14] Zhang, J.X., Xu, T. and Ge, Q.X. (2003) Notes on Pestalotiopsis from Southern China. Mycotaxon, 85, 91-92.
[15] Tokumasu, S. and Aoiki, T. (2002) A New Approach to Studying Microfungal Succession on Decaying Pine Needles in an Oceanic Subtropical Region in Japan. Fungal Diversity, 10, 167-183.
[16] Tang, A., Hyde, K.D. and Corlett, R.T.C. (2003) Diversity of Fungi on Wild Fruits in Hong Kong. Fungal Diversity, 14, 165-185.
[17] Farr, D.F. and Rossman, A.Y. (2015) Fungal Databases. Systematic Mycology and Microbiology Laboratory, ARS, USDA.
[18] Rivera, M.C., Wright, E.R., Pérez, B.A. and González Rabelino, P. (2009) Enfermedades del Arándano. In: Wright, E.R., Ed., Guía de Enfermedades, Plagas y Malezas del arándano, Orientación Gráfica Editora, Buenos Aires, 1-68.
[19] Wright, E.R., Folgado, M., Rivera, M.C., Crelier, A., Vasquez, P. and Lopez, S.E. (2008) Nigrospora sphaerica Causing Leaf Spot and Twig and Shoot Blight on Blueberry: A New Host of the Pathogen. Plant Disease, 92, 171-171.
[20] Wright, E.R., Rivera, M.C. and Flynn, M.J. (1988) First Report of Pestalotiopsis guepinii and Glomerella cingulata on Blueberry in Buenos Aires (Argentina). EPPO Bulletin, 28, 219-220.
[21] Simmons, E.G. (1993) Alternaria Themes and Variations (54-62). Mycotaxon, 46, 171-199.
[22] Simmons, E.G. (1999) Alternaria Themes and Variations (236-243): Host-Specific Toxin Producers. Mycotaxon, 70, 325-370.
[23] Mordue, J.E.M. (1971) Pestalotiopsis guepinii. CMI Descriptions of Pathogenic Fungi and Bacteria. No. 320. Com- monwealth Mycological Institute, Kew.
[24] Sutton, B.C. (1980) The Coelomycetes. Commonwealth Mycological Institute, Kew.
[25] Ellis, M.B. and Waller, J.M. (1974) Sclerotinia fuckeliana (Conidial State: Botrytis cinerea). CMI Descriptions of Pathogenic Fungi and Bacteria. No. 431. Commonwealth Mycological Institute, Wallingford.
[26] Ellis, M.B. (1971) Dematiaceous Hyphomycetes. CMI, Kew.
[27] Mason, E.W. (1927) On Species of the genus Nigrospora Zimmermann Recorded on Monocotyledons. Transactions of the British Mycological Society, 12, 152-165.
[28] Pitt, J.I. (2000) A Laboratory Guide to Common Penicillium Species. 3rd Edition. SCIRO, North Ryde.
[29] Kohn, L.M. (1979) Delimitation of the Economically Important Plant Pathogenic Sclerotinia Species. Phytopathology, 69, 881-886.
[30] Mordue, J.E.M. and Holliday, P. (1976) Sclerotinia sclerotiorum Descriptions of Pathogenic Fungi and Bacteria. No. 513. Commonwealth Mycological Institute, Kew.
[31] Raper, K.B. and Fennell, D.I. (1965) The Genus Aspergillus. The Williams & Wilkins Company, Baltimore.
[32] Erper, I. and Celik, H. (2011) First Report of Pestalotiopsis guepinii on Vaccinium corymbosum in Turkey. Journal of Plant Pathology, 93, S4.87.
[33] Espinoza, J.G., Briceño, E.X., Keith, L.M. and Latorre, B.A. (2008) Canker and Twig Dieback of Blueberry Caused by Pestalotiopsis spp. and a Truncatella sp. in Chile. Plant Disease, 92, 1407-1414.
[34] Vasquez, P., Baldomá, J.A., Wright, E.R., Pérez, A., Divo de Sesar, M. and Pérez, B.A. (2007) First Report of Blueberry Botrytis Blight in Buenos Aires, Entre Ríos, and Córdoba, Argentina. Plant Disease, 91, 639.
[35] Perez, B.A., Farinon, O.M. and Berretta, M.F. (2011) First Report of Sclerotinia Rot on Blueberry Caused by Sclerotinia sclerotiorum in Argentina. Plant Disease, 95, 774.
[36] Wright, E.R., Fernández, R.L., Benva, M., Pérez, J.A., Rivera, M.C., Roncoroni, S., Nicolini, F., Vazquez, P.E., Ciurca, P. and Pérez, B.A. (2008) Deterioro Poscosecha de Arándano en Entre Ríos y Buenos Aires, Argentina. In: Divo de Sesar, M., Rocca, M. and Vilella, F., Eds., Avances en Cultivos Frutales No Tradicionales, Editorial Facultad de Agronomía, Buenos Aires, 63-68.
[37] Moschini, R., Wright, E.R., Bombelli, E., López, M.V., Canavesi, G., Pagano, M., Eizaguirre, L., Barberis, G., Fabrizio, M.C. and Rivera, M.C. (2012) Logistic Models for Estimating Epidemic Increase Rates of Blueberry Foliar Diseases, Based on Meteorological and Leaf Senescence Variables. Acta Horticulturae, 926, 651-656.
[38] Bombelli, E., Moschini, R., Wright, E.R., López, M.V., Fabrizio, M.C., Barberis, G. and Rivera, M.C. (2013) Modelado para la Predicción de Enfermedades en Cultivos de Alto Valor Comercial. Proyecciones, 11, 47-59.
[39] Moschini, R.C., Bombelli, E.C., Wright, E.R., López, M.V., Pérez Canone, H.I., Carmona, J.D., Varsallona, B., Barberis, J.G., Fabrizio, M.C. and Rivera, M.C. (2014) Ajuste de Modelos Logísticos a la Tasa de Incremento de Severidad de Manchas Foliares Ocasionadas por Alternaria tenuissima en Arándano (Logistic Models Adjustment to Growth Rate of Severity of Blueberry Leaf Spot Caused by Alternaria tenuissima). Horticultura Argentina, 33, 27-35.
[40] International Mycological Association (2013) Alternaria tenuissima.
[41] Stinson, E.E., Bills, D.D., Osman, S.F., Siciliano, J., Ceponis, M.J. and Heisler, E.G. (1980) Mycotoxin Production by Alternaria Species Grown on Apples, Tomatoes and Blueberries. Journal of Agricultural and Food Chemistry, 28, 960-963.
[42] Greco, M., Patriarca, A., Terminiello, L., Fernández Pinto, V. and Pose, G. (2012) Toxigenic Alternaria Species from Argentinean Blueberries. International Journal of Food Microbiology, 154, 187-191.
[43] Wright, E.R., Rivera, M.C., Esperón, J., Cheheid, A. and Rodríguez Codazzi, A. (2004) Alternaria Leaf Spot, Twig Blight and Fruit Rot of Highbush Blueberry in Argentina. Plant Disease, 88, 1383.
[44] Luan, Y.S., Shang, Z.T., Su, Q. and An, L.J. (2008) First Report of a Pestalotiopsis sp. Causing Leaf Spot of Blueberry in China. Plant Disease, 92, 171.

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