1. Distribution of root-knot nematode on coffee production in the Cerrado region of Minas Gerais state in Brazil.
- Author
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Babilônia, Gustavo Braga, Londe, Maria Luiza Araújo, Terra, Willian César, Salgado, Sônia Maria de Lima, Vieira, Bruno Sérgio, de Oliveira, Cláudio Marcelo Gonçalves, Rosa, Juliana Magrinelli Osório, and Lopes, Everaldo Antônio
- Abstract
Brazil is the largest coffee-producing nation in the world. Over 50% of the national production comes from the Minas Gerais state, with relevant contribution of the region covered by the Cerrado biome. Given the threat posed by root-knot nematodes (RKN,
Meloidogyne spp.) to coffee production, we collected plant and soil samples from infested plantations across 16 counties and identified the species of this pathogen. Based on the female perineal patterns, male morphology, esterase phenotypes and SCAR markers, the species found wereMeloidogyne exigua ,Meloidogyne paranaensis ,Meloidogyne incognita andMeloidogyne arenaria . The most prevalent species wasM. exigua , occurring in 83.8% of the sampled sites, followed byM. paranaensis (19%) andM. incognita (4.9%). Mixed populations of RKN were observed in 7.7% of the sites, with the highest prevalence ofM. exigua +M. paranaensis andM. paranaensis +M. incognita , followed byM. exigua +M. incognita .Meloidogyne arenaria was found in one site, in a mixed population withM. paranaensis +M. exigua . Strategies to prevent the spread of these nematodes to non-infested areas are highly recommended, particularly focusing on the most aggressive species such asM. paranaensis andM. incognita . [ABSTRACT FROM AUTHOR]- Published
- 2024
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