Open AccessAssociation of Olpidium bornovanus and Melon necrotic spot virus with Vine Decline of Melon in Guatemala
Author(s) -
M. de Cara,
Virgilio López,
M. C. Córdoba,
M. Santos,
C. Jordá,
Julio C. Tello
Publication year - 2008
Publication title -
plant disease
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.663
H-Index - 108
eISSN - 1943-7692
pISSN - 0191-2917
DOI - 10.1094/pdis-92-5-0709
Subject(s) - biology , melon , macrophomina phaseolina , vine , rhizoctonia solani , pythium aphanidermatum , horticulture , rhizoctonia , veterinary medicine , botany , biological pest control , medicine
Thirty-one soil samples from 14 different fields of Guatemala melon with vine decline symptoms were analyzed for the presence of organisms associated with the disease. With a soil-dilution plating method, only Macrophomina phaseolina was detected in five samples. With a melon bait plant technique, Olpidium bornovanus, often together with Melon necrotic spot virus (MNSV), was found in nearly all the samples, corresponding with all the fields studied. Other pathogens that were detected less frequently included Pythium aphanidermatum, Monosporascus cannonballus, and Rhizoctonia solani. Consequently, O. bornovanus and MNSV were uniquely associated with disease occurrence and thus are the most probable cause of melon vine decline in the fields studied.