Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

First report on Meloidogyne enterolobii in Morus celtidifolia in Paraná State, Brazil.

Abstract

In sampling carried out in June 2017, many galls were observed in root samples of mulberry (Morus celtidifolia cv. Korin) collected from Tuneiras do Oeste County, Paraná State, Brazil. These galls are a typical symptom of infection caused by Meloidogyne spp. The material was taken to the Nematology Laboratory of State University of Maringá, to have the Meloidogyne species identified through three different techniques: configuring the perineal pattern of 10 adult females; assessing the esterase isoenzyme phenotype of 40 females directly extracted from the root; and determining the species-specific sequence characterized amplified region. In addition, the number of Meloidogyne sp. in the field was determined by processing 10 grams of roots. The mean density of the nematode population was 368 eggs and second-stage juveniles per gram of fresh root. All techniques pointed toward the presence of M. enterolobii in symptomatic plants. Results are also presented of greenhouse tests to confirm pathogenicity of M. enterolobii. The first world report on M. enterolobii parasitizing mulberry involved seedlings from Itapetininga County, São Paulo state, Brazil; the second report was from Florida, USA. According to the listed bibliographic references, the present report is the first describing M. enterolobii parasitizing mulberries in areas of commercial cultivation in Brazil.