Nematóides da Região Amazônica. II - Nematóides parasitas e de vida livre associados à pimenta-do-reino (Piper nigrum L.) e ao cacaueiro (Theobroma cacao L.)
Abstract:Resumo Nesta segunda etapa do levantamento taxonómico dos nematóides da região amazônica os autores apresentam os nematóides parasitas e os de vida livre associados às raízes e/ou rizosferas da pimenta-do-reino e do cacaueiro, em município do Estado do Pará. Um total de 6 gêneros e 10 espécies de nematóides parasitas e 15 gêneros de nematóides de vida livre foram catalogados A maioria dos gêneros e espécies identificadas é, pela primeira vez, encontrada em associação a estas duas culturas na Amazônia.
“…Black pepper plants parasitized by gall nematodes generally become chlorotic, with severe leaf yellowing, defoliation and reduction in chlorophyll content, which affects vegetative development, resulting in significant reduction in yield and even death (Freire & Monteiro, 1978;Ferraz & Lordello, 1989;Mohandas & Ramana, 1991). Some of these symptoms, such as yellowing, defoliation and roots with numerous galls were observed in the plants analyzed in our study.…”
Section: Resultsmentioning
confidence: 99%
“…In Brazil, reports involving the black pepper pathosystem x Meloidogyne spp. are rare and mostly related to M. incognita in the State of Pará (Lordello & Silva, 1974;Ichinohe, 1976;Freire & Monteiro 1978). In Brazil, the only report of M. arenaria in black pepper is from 1965, made by Dr. Jair C. Carvalho, based on the analysis of soil and roots from Caraguatatuba, SP (Carvalho, 1965).…”
Summary
Samples of black pepper root with the presence of galls from the most southern region of the State of Bahia, Brazil, were characterized biochemically and morphologically using three criteria: i) observation of the anterior region of the males; ii) analysis of female perineal configuration and iii) polyacrylamide gel electrophoresis technique. Meloidogyne arenaria was found. This is the first report of this pathosystem in the State.
“…Black pepper plants parasitized by gall nematodes generally become chlorotic, with severe leaf yellowing, defoliation and reduction in chlorophyll content, which affects vegetative development, resulting in significant reduction in yield and even death (Freire & Monteiro, 1978;Ferraz & Lordello, 1989;Mohandas & Ramana, 1991). Some of these symptoms, such as yellowing, defoliation and roots with numerous galls were observed in the plants analyzed in our study.…”
Section: Resultsmentioning
confidence: 99%
“…In Brazil, reports involving the black pepper pathosystem x Meloidogyne spp. are rare and mostly related to M. incognita in the State of Pará (Lordello & Silva, 1974;Ichinohe, 1976;Freire & Monteiro 1978). In Brazil, the only report of M. arenaria in black pepper is from 1965, made by Dr. Jair C. Carvalho, based on the analysis of soil and roots from Caraguatatuba, SP (Carvalho, 1965).…”
Summary
Samples of black pepper root with the presence of galls from the most southern region of the State of Bahia, Brazil, were characterized biochemically and morphologically using three criteria: i) observation of the anterior region of the males; ii) analysis of female perineal configuration and iii) polyacrylamide gel electrophoresis technique. Meloidogyne arenaria was found. This is the first report of this pathosystem in the State.
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