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Home » Publications » Papers in scientific journals and popular science publications » 2010

Lucha oportuna adaptada versus lucha clásica frente al mildiu de la vid en la comarca de O Salnés (D.O. Rías Baixas)
PHYTOMA Spain, April 2010, Nº218, Pag: 50


Estación Fitopatolóxica do Areeiro, Subida a la Robleda s/n, 36153 Pontevedra.

ABSTRACT: Grapevine downy mildew has been traditionally controlled following fixed schedules, which is not environmental friendly and is very expensive. Timely control is a rationalization strategy based on acting when the disease is observed and specific environmental conditions take place. A modification of the strategy named adapted timely control has been carried out in O Salnés (Pontevedra, Spain) for 12 years. Compared to traditional strategies, the number of chemical applications every year has been reduced, without affecting the results obtained.

Keywords: Control, optimization, Plasmopara viticola.

First Report of Arabis mosaic virus on Grapevine in Spain
Plant Disease May 2010, Volume 94, Nº5, Pag: 635

Adela ABELLEIRA1, J. Pedro MANSILLA1, Ventura PADILLA2, Isidro HITA2, Cristina CABALEIRO3, Edson BERTOLINI4, Antonio OLMOS4, F. Javier LEGORBURU5

1Estación Fitopatolóxica do Areeiro, Subida a la Robleda s/n, 36153 Pontevedra, España.
2Instituto Murciano de Investigación y Desarrollo Agrario, E-30150, LA ALBERCA, Spain.
3Escola Politécnica Superior, Universidade de Santiago de Compostela, E-27002, LUGO, Spain
4Instituto Valenciano de Investigaciones Agrarias, E-46113, MONCADA, Spain.
5NEIKER-Basque Institute for Agricultural Research and Development, E-01080, VITORIA/GASTEIZ, Spain.

ABSTRACT: Arabis mosaic virus (ArMV, genus Nepovirus, family Comoviridae) constitutes together with the Grapevine fanleaf virus (GFLV), one of the European Nepovirus responsible for the grapevine infectious degeneration.

This pathogen mainly affects grapevines in Central Europe and it had not been previously reported in Spain. This virus could reappear in the north of the Iberian Peninsula due to the association of this virus with viticulture in cold climates. It was first detected in Galicia in the Denomination of origin “Rías Baixas” in 2007 in summer. It was detected in two grapevines of the variety ‘Albariño’, showing symptoms of mosaics, leaf yellowing and poor fruit set. Its vector, Xiphinema diversicaudatum (Nematoda: Longidoridae) was also identified. The second finding was in the spring of 2008 in the Basque Country in grapevines of the Designation of origin Rioja, in a grapevine of the variety Tempranillo. In this case, no obvious foliar symptoms were observed but fruit set was very poor. ArmV epidemiology is related to the occurrence of its vector X. diversicaudatum, polyphagous nematode, that can transmit the virus to several hosts both woody and grass species.

The control of the disease, together with the main grapevine viruses have been regulated in the Technical Regulations for the Control and Certification of Grapevine Nursery plants (Spanish Royal decree 208/2003 of the 21st February and the Order APA/ 2474/2006 of the 27th July), with the aim to select certified plant material, free from these important viruses.

First Report of Phytophthora Rot on Alders Caused by Phytophthora alni subsp. alni in Spain
Plant Disease February 2010, Volume 94, Nº2, Pag: 273
Publication Acepted 25-11-2009

C. Pintos Varela, C. Rial Martínez, J.P. Mansilla Vázquez, O. Aguín Casal

Estación Fitopatolóxica do Areeiro, Subida a la Robleda s/n, 36153 Pontevedra, España.

ABSTRACT: Phytophthora alni subsp. alni is a soil- and water-borne pathogen, which causes aggressive root and collar rot on riparian alder populations. The disease has been described in several European countries and has had a destructive impact in Great Britain. Some of the symptoms already reported on this disease which include abnormally small, sparse and yellowish foliage, dieback of the canopy, necroses of the inner bark and cambium, and bleeding cankers on the trunks, had been already described along several rivers of the Cantabrian coast, although the fungus had not been detected yet in Spain so far.

The present work deals with the first identification of Phytophthora alni subsp. alni in Spain. The fungus was detected in several sites along the river Avia (Ribadavia, Ourense province). Identification was performed from alder samples showing the symptoms previously described. The morphology of the pathogen is thoroughly described and its identification is confirmed by molecular techniques, by comparing our sequences (Accession numbers GU108602 and GU108603) with those of Genbank. The pathogenicity of the fungus has been determined by inoculating our isolates in A. glutinosa plants in pots. This is the first report of Phytophthora rot on alder caused by P.alni subsp. alni in Spain.