<abstract xmlns="http://www.w3.org/1999/xhtml"><p> Severe infections of parsley plants and soil infestations with Meloidogyne javanica during an autumn surveys for the pathogenic root-knot nematode infestations were found in Monopoli at Bari province in Southern Italy. This unusual severe infection of parsley, considered a winter crop, was possibly instigated by a very warm autumn from the previous year. Nematodes were extracted from soil samples according to the Coolen’s method. Morphological analysis (based on stylet length, tail length and shape, adult females perineal pattern, excretory pore position and Ep/stylet ratio) and molecular studies were used for the nematode characterization and identification. In the soil of infested area a severely deformed root systems were observed, showing a galling rate = 2.5 - 4 (scale 0-5) and a soil nematode population densities ranging from 350 to 2,730 eggs and J2 per 5 g of fresh root. M. javanica attack on parsley roots is a limiting factor for plant growth. Considering that curly-leaf parsley varieties resistant to the nematodes are not yet available control strategies must be focused on reduction of soil infestation level below tolerance limit of the target nematode species. Due to the higher cost and reduced availability of fumigant and non-fumigant nematicides, soil solarization, organic amendments or biological control approaches should be preferably used as alternatives.</p></abstract>

Severe infections of parsley plants and soil infestations with Meloidogyne javanica during an autumn surveys for the pathogenic root-knot nematode infestations were found in Monopoli at Bari province in Southern Italy. This unusual severe infection of parsley, considered a winter crop, was possibly instigated by a very warm autumn from the previous year. Nematodes were extracted from soil samples according to the Coolen’s method. Morphological analysis (based on stylet length, tail length and shape, adult females perineal pattern, excretory pore position and Ep/stylet ratio) and molecular studies were used for the nematode characterization and identification. In the soil of infested area a severely deformed root systems were observed, showing a galling rate = 2.5 - 4 (scale 0-5) and a soil nematode population densities ranging from 350 to 2,730 eggs and J2 per 5 g of fresh root. M. javanica attack on parsley roots is a limiting factor for plant growth. Considering that curly-leaf parsley varieties resistant to the nematodes are not yet available control strategies must be focused on reduction of soil infestation level below tolerance limit of the target nematode species. Due to the higher cost and reduced availability of fumigant and non-fumigant nematicides, soil solarization, organic amendments or biological control approaches should be preferably used as alternatives.

Parasitism and pathogenicity of curly-leaf parsley with the root-knot nematode Meloidogyne javanica in Southern Italy

Istituto per la Protezione Sostenibile delle Piante (IPSP), Consiglio Nazionale delle Ricerche (CNR), U.O.S. di Bari, Via G. Amendola 122/D, 70126 Bari, Italy

Instituto de Agricultura Sostenible (IAS), Consejo Superior de Investigaciones Científi cas (CSIC), Apdo. 4084, 14080 Córdoba, Campus de Excelencia Internacional Agroalimentario, cei A3, Spain

HortoService, Servizi Tecnici in Agricoltura Via S. Pietro 3, 70016 Noicattaro; Bari, Italy

Helminthologia

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Severe infections of parsley plants and soil infestations with Meloidogyne javanica during an autumn surveys for the pathogenic root-knot nematode infestations...

Parasitism and pathogenicity of curly-leaf parsley with the root-knot nematode Meloidogyne javanica in Southern Italy

Publié en ligne: 26 nov. 2015

Pages: 348 - 354

Reçu: 26 mars 2015

Accepté: 18 mai 2015

DOI: https://doi.org/10.1515/helmin-2015-0055

Mots clés
giant cells, histopathology, nematode reproduction, Petroselinum crispum, root-knot nematode population density

© 2015

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Parasitism and pathogenicity of curly-leaf parsley with the root-knot nematode Meloidogyne javanica in Southern Italy

Publié en ligne: 26 nov. 2015

Pages: 348 - 354

Reçu: 26 mars 2015

Accepté: 18 mai 2015

DOI: https://doi.org/10.1515/helmin-2015-0055

Mots clésgiant cells, histopathology, nematode reproduction, Petroselinum crispum, root-knot nematode population density

© 2015

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
giant cells, histopathology, nematode reproduction, Petroselinum crispum, root-knot nematode population density