MÁ

María Ángeles González-Sánchez

Universidad de Málaga

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R.M. Pérez‐Jiménez

Andalusian Institute of Agricultural and Fisheries Research and Training

Francisco M. Cazorla

Universidad de Málaga

Antonio de Vicente

Universidad de Málaga

Cayo Ramos

Instituto de Hortofruticultura Subtropical y Mediterránea "La Mayora"

Clara Pliego

Andalusian Institute of Agricultural and Fisheries Research and Training

Antonio Granell

Instituto de Biología Molecular y Celular de Plantas

Walter Barrantes

Universidad de Costa Rica

R. Fernández-Muñoz

Instituto de Hortofruticultura Subtropical y Mediterránea "La Mayora"

Gloria López‐Casado

Universidad de Málaga

Martín Sánchez

University of Oslo

Cooperative Institutions

Consejo Superior de Investigaciones Científicas

Instituto de Hortofruticultura Subtropical y Mediterránea "La Mayora"

Universidad de Málaga

Instituto de Biología Molecular y Celular de Plantas

Universitat Politècnica de València

Andalusian Institute of Agricultural and Fisheries Research and Training

Junta de Andalucía

GTx (United States)

Unidades Centrales Científico-Técnicas

John Innes Centre

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Selection for biocontrol bacteria antagonistic toward Rosellinia necatrix by enrichment of competitive avocado root tip colonizers

Research in Microbiology (2007)

Clara Pliego Francisco M. Cazorla María Ángeles González-Sánchez R.M. Pérez‐Jiménez Antonio de Vicente

Stenotrophomonas

Root rot

Antibiosis

Pseudomonas putida

10.1016/j.resmic.2007.02.011

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Citations (48)

Highly efficient genomics-assisted development of a library of introgression lines of Solanum pimpinellifolium

Molecular Breeding (2014)

Walter Barrantes Asun Fernández‐del‐Carmen Gloria López‐Casado María Ángeles González-Sánchez R. Fernández-Muñoz

Introgression

SNP genotyping

10.1007/s11032-014-0141-0

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Citations (35)

Biocontrol bacteria selected by a direct plant protection strategy against avocado white root rot show antagonism as a prevalent trait

Journal of Applied Microbiology (2009)

María Ángeles González-Sánchez R.M. Pérez‐Jiménez Clara Pliego Cayo Ramos Antonio de Vicente

Journal Article Biocontrol bacteria selected by a direct plant protection strategy against avocado white root rot show antagonism as a prevalent trait Get access M.Á. González‐Sánchez, M.Á. González‐Sánchez IFAPA‐CICE‐Málaga, CAP‐Junta de Andalucía, Cortijo de la Cruz s/n, Churriana, Málaga, Spain Search for other works by this author on: Oxford Academic Google Scholar R.M. Pérez‐Jiménez, R.M. Pérez‐Jiménez IFAPA‐CICE‐Málaga, CAP‐Junta de Andalucía, Cortijo de la Cruz s/n, Churriana, Málaga, Spain Search for other works by this author on: Oxford Academic Google Scholar C. Pliego, C. Pliego Área de Genética, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain Search for other works by this author on: Oxford Academic Google Scholar C. Ramos, C. Ramos Área de Genética, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain Search for other works by this author on: Oxford Academic Google Scholar A. De Vicente, A. De Vicente Departamento de Microbiología, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain Search for other works by this author on: Oxford Academic Google Scholar F.M. Cazorla F.M. Cazorla Departamento de Microbiología, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain Francisco M. Cazorla, Departamento de Microbiología, Facultad de Ciencias, Universidad de Málaga, Campus Universitario de Teatinos s/n, 29071‐Málaga, Spain, E‐mail: cazorla@uma.es Search for other works by this author on: Oxford Academic Google Scholar Journal of Applied Microbiology, Volume 109, Issue 1, 1 July 2010, Pages 65–78, https://doi.org/10.1111/j.1365-2672.2009.04628.x Published: 01 July 2010 Article history Received: 30 September 2009 Revision received: 06 November 2009 Accepted: 11 November 2009 Published: 01 July 2010

Root rot

White rot

Trait

10.1111/j.1365-2672.2009.04628.x

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Citations (38)

Avocado Dieback Caused by Neofusicoccum parvum in the Andalucia Region, Spain

Plant Disease (2007)

T. Zea‐Bonilla María Ángeles González-Sánchez Martín Sánchez R.M. Pérez‐Jiménez

From 2002 to 2006, adult avocado trees, Persea americana Miller cv. Hass, located in the subtropical-fruit-producing area of Andalucia (southern Spain) developed symptoms of dieback characterized by death of twigs and branches in the tree canopy. Sections of surface-disinfested, necrotic branch tissues were plated on Difco potato dextrose agar (PDA) (Sparks, NV) and a Neofusicoccum-like fungus was isolated. On PDA, the isolates had white, appressed mycelium that turned dull gray as the colony aged, although conidia were not formed. Abundant pycnidia and conidia developed when isolates were cultured on 2% water agar with sterilized pine needles as substratum at 25°C under near-UV light for 2 weeks. Conidia were hyaline, unicellular, ellipsoid with an obtuse apex and subtruncate base, averaged 16.2 μm long by 5.8 μm wide and ranged from 12.0 to 20.0 by 4.0 to 8.0 μm, and becoming brown with one or two septa with age. Sequenced rDNA fragments (ITS1, 5.8S rDNA, and ITS2, amplified with ITS1 and ITS4 primers) of two avocado isolates were 100% homologous with Neofusicoccum parvum (Pennycook & Samuels) Crous, Slippers, & A.J.L. Phillips (1) (GenBank Accession Nos. AM410965 and AM410966). Morphological and molecular results confirmed this species as N. parvum, reported as the anamorph of Botryosphaeria parva (1). A pathogenicity test was conducted using two isolates on sets of five 2-year-old avocado plants produced from seeds of cv. Topa-Topa growing in 5-liter pots with soil. Unwounded and wounded plants were used for inoculations. Plants were wounded 2 to 3 cm below the apical tip with a lance (4 mm long and 1 mm deep). For inoculation, 4-mm 2-week-old PDA culture plugs were placed in contact with wounded tissues and covered with Parafilm. Five noninoculated plants treated similarly served as controls. Plants were maintained in the greenhouse with a temperature range of 18 to 26°C, and 1 month later, brown stem lesions, as much as 5 cm, originating from the inoculation site followed by dieback of branches were observed. Reisolations from necrotic branches were successful, and both isolates with identical morphology to those used for inoculations were recovered. Pathogenicity tests of seedlings using the same methods also caused stem lesions on unwounded plants and the pathogen was reisolated. To our knowledge, this is the first report of N. parvum causing dieback of avocado trees in Spain. Previously, B. parva has been reported causing stem-end rot of avocado fruit in New Zealand (2). In Spain, since diseased orchards are increasing rapidly, this pathogen could be efficiently distributed by pruning activities (tools and vegetal debris) as observed with other diseases (3). The presence of N. parvum in this subtropical area presents a serious disease problem not only to avocado but also to mango (Mangifera indica L.), which is another susceptible host (4). References: (1) P. W. Crous et al. Stud. Mycol. 55:235, 2006. (2) W. F. T. Hartill et al. N. Z. J. Crop Hortic. Sci. 30:249. 2002. (3) A. J. L. Phillips. Phytopathol. Mediterr. 41:3, 2002. (4) B. Slippers et al. Mycologia 97:99, 2005.

Pycnidium

Botryosphaeria

Potato dextrose agar

Persea

Chlamydospore

Pedicel

Pestalotiopsis

10.1094/pdis-91-8-1052b

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Citations (30)

Evaluation of the effectiveness of biocontrol bacteria against avocado white root rot occurring under commercial greenhouse plant production conditions

Biological Control (2013)