First report of Meloidogyne incognita infecting spinach in southern Spain
Severe plant yellowing and decline were recently observed in two commercial fields of spinach (Spinacia oleracea cv. Polka) in Encinarejo (Córdoba), southern Spain. Disease surveys revealed severe infections of main and feeder roots and a large soil population of the southern root-knot nematode Meloidogyne incognita. The nematode population was extracted and quantified from soil and root samples according to Barker (1) and identified by female perineal pattern, phenotype esterases, and host-differential test (3,4). M. incognita was found in 100% of soil samples and 85.7% of root samples with nematode population densities ranging from 44 to 378 eggs and second-stage juveniles (J2s) per 100 cm3 of soil and 162 to 725 eggs and J2s per 5 g of fresh roots. Infected roots showed large, regular galls on root tips and also along the main root axis and secondary feeder roots. Galling of root tips prevents further root growth into deeper soil layers and induced proliferation of secondary roots. The severe infections in roots of spinach suggest that parasitism of spinach roots by the nematode must contribute to stunting, yellowing, and decline of spinach as previously reported (2). To our knowledge, this is the first report of M. incognita infecting spinach in Spain.
Main Authors: | Castillo, Pablo, Jiménez-Díaz, Rafael M. |
---|---|
Format: | artículo biblioteca |
Language: | English |
Published: |
American Phytopathological Society
2003-07
|
Subjects: | Meloidogyne incognita, Infecting Spinach, Southern Spain, |
Online Access: | http://hdl.handle.net/10261/11025 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Similar Items
-
First Report of Broomrape (Orobanche crenata) Infecting Lettuce in Southern Spain
by: Landa, Blanca B., et al.
Published: (2006-08) -
Analysis of root-knot nematode early infection events in tomato colonized by the arbuscular mycorrhizal fungus Glomus mosseae
by: Vos, C., et al.
Published: (2011) -
Thermal therapy for the eradication of Mentha spicata roots infected with Meloidogyne incognita
by: Gokte, N., et al. -
Caracterización morfométrica de cuatro poblaciones de Meloidogyne incognita de Costa Rica
by: Hidalgo, Lilliana, et al.
Published: (1980-04) -
ASPECTOS IMPORTANTES DEL NEMATODO AGALLADOR MELOIDOGYNE INCOGNITA /
by: CEPEDA SILLER, MELCHOR, et al.