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Updated: Nov 9, 2025

High and Low Throughput Screens with Root-knot Nematodes Meloidogyne spp.
Published on: March 12, 2012
First report of rice root-knot nematode, Meloidogyne graminicola, infecting Juncus microcephalus in Brazil
Cristiano Bellé1, Paulo Sergio Dos Santos2, Tiago Edu Kaspary3
1Phytus Group, Estação Experimental de Itarra, Estrada da Estação, 3219, Interior, 97185-000, Itaara, RS, Brazil.
Abstract:
Juncus microcephalus plants showing symptoms of root-knot nematode infestation were observed in the municipality of Agudo, Rio Grande do Sul state, Brazil. Based on morphological observation, esterase phenotypes, and molecular analyses of rDNA-ITS and D2-D3 regions of 28S rDNA, the causal agent of the observed symptoms was identified as Meloidogyne graminicola. Pathogenicity of M. graminicola was confirmed by fulfilling modified Koch's postulates. To our knowledge, this is the first report of M. graminicola in J. microcephalus in Rio Grande do Sul State, Brazil.
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