Effect of plant and fungous metabolites on Meloidogyne exigua

Ciência e Agrotecnologia

Daniel Rufino Amaral²  Denilson Ferreira Oliveira¹  Vicente Paulo Campos¹  José Antônio Pantaleão¹  Douglas Antônio De Carvalho¹  Alexandro Da Silva Nunes¹ 

[1] ,Fundação de Ensino Superior de Passos Faculdade de Engenharia de Passos Passos MG

关键词: Fungi;    Heteroderidae;    nematicide;    plant extract;    Tylenchida;    Extrato vegetal;    fungos;    Heteroderidae;    nematicida;    Tylenchida;   

DOI  :  10.1590/S1413-70542009000700027

来源: SciELO

【 摘 要 】

As nematodes cause great damage to Brazilian coffee production, effective methods to control these parasites are necessary. In a previous work Allium cepa L., Cajanus cajan (L.) Mill., Crotalaria juncea L., Ficus elastica Roxb., Ruta graveolens L., Stylosanthes guianensis Aubl., Leucaena leucocephala (Lam.) Dewit., Brachiaria decumbens Stapf., Catharanthus roseus G. Don, Tagetes minuta L., Ricinus communis L. and Coffea arabica L. produced active substances against Meloidogyne exigua Goeldi, a nematode widely disseminated through Brazilian coffee fields. Thus, aqueous extracts of such plants, collected in a different season from that of the previous work, as well as crude metabolites produced in liquid medium by Fusarium moniliforme Shelden and Cylindrocarpon magnusianum (Sacc.) Woll., were submitted to in vitro assays with M. exigua second-stage juveniles (J2). All plants and fungi produced active substances against J2. Therefore, their metabolites were applied to six-month-old coffee plants inoculated with M. exigua. After 90 days in a greenhouse, those samples obtained from A. cepa, L. leucocephala, R. graveolens and F. moniliforme inhibited the production of galls and eggs by M. exigua, demonstrating potential to control such parasite.

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