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10 pages, 9 figures, 1 table.-- PACS: 47.20.Bp; 47.20.Ky; 47.10.-g; 47.35.-i ; We study, from the numerical point of view, instabilities developed in a fluid layer with a free surface in a cylindrical container which is nonhomogeneously heated from below. In particular, we consider the case in which the applied heat is localized around the origin. An axisymmetric basic state appears as soon as a nonzero horizontal temperature gradient is imposed. The basic state may bifurcate to different solutions depending on vertical and lateral temperature gradients and on the shape of the heating function. We find different kinds of instabilities: extended patterns growing on the whole domain, which include those known as targets, and spiral waves. Spirals are present even for infinite Prandtl number. Localized structures both at the origin and at the outer part of the cylinder may appear either as Hopf or stationary bifurcations. An overview of the developed instabilities as functions of the dimensionless parameters is presented in this article. ; This work was partially supported by the Research Grant MCYT (Spanish Government) Nos. BFM2003-02832, MTM2004-00797, MTM2006-14843-C02-01, CCYT (JC de Castilla-La Mancha) Nos. PAC-05-005-01/02, SIMUMAT S-0505-ESP-0158 (Comunidad de Madrid), University of Castilla-La Mancha, and CSIC (Nos. PI-200650I224 and PIF06-059 . A.M.M. acknowledges MCYT (Spanish Government) for a Ramón y Cajal Research Fellowship and CESGA for computing support. ; Peer reviewed

Following the identification in 2013 of Xylella fastidiosa in the southern of Italy, rapid emergency measures have been implemented in the EU for its prevention, detection and surveillance. In the framework of routine inspections performed in Mallorca, Spain, in October 2016, samples were taken from an open air nursery, and some sweet cherry plants were analyzed according to the protocol of the European and Mediterranean Plant Protection Organization (EPPO, 2016) and found positives for X. fastidiosa by two real time PCR tests. Besides, the bacteria was isolated in two media after 11 days of incubation. The MLST analysis of genes leuA, petC, malF, cysG, holC, nuoL and glT identified the isolate as X. fastidiosa subsp. fastidiosa. ST-1 . Subsequent sampling in the same nursery allowed the identification of two other cherry plants infected by the same bacterium. The cherry plants were grown in the nursery of Mallorca for the last four years and did not show typical leaf scorch symptoms. They were previously cultivated in another nursery in Tarragona (Spain) that imported them from The Netherlands. After confirmation of the analysis, the plants were destroyed right away as required by the EU legislation. The contingency plan of the Spanish Ministry of Agriculture (MAPAMA) was implemented and survey on potential host plants as well as sampling and testing within a radius of 100 m were performed around the infected plants and a buffer zone of 10 km, was designed. This is the second report of X. fastidiosa subsp. fastidiosa in an EU country after the detection of this subspecies in an oleander plant in Germany.