Development of a bionematicide with Paecilomyces lilacinus to control Meloidogyne incognita |
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Authors: | Débora Brand Sevastianos Roussos Ashok Pandey Paulo C Zilioli Jorge Pohl Carlos Ricardo Soccol |
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Institution: | (1) Laboratório de Processos Biotecnológicos, Departamento de Engenharia Química, Universidade Federal do Paraná (UFPR), CEP 81531-970 Curitiba, PR, Brazil;(2) Laboratoire de Microbiologie IRD, Université de Provence, 132288 Marseille, France;(3) Biotechnology Division, Regional Research Laboratory, CSIR, 695 019 Trivandrum, India;(4) Centro de Diagnóstico Marcos Enrietti, Secretaria da Agricultura e Abastecimento (SEAB), 80040-340 Curitiba-PR, Brazil |
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Abstract: | Root-knot disease caused by Meloidogyne incognita is a matter of grave concern because it affects several economically important crop plants. The use of solid-state fermentation
(SSF) may help to elaborate efficient formulations with fungi to be employed in the biologic control of nematodes. Attempts
were made to select low-cost substrates for spore production of a strain of Paecilomyces lilacinus with known nematicide capacity. Coffee husks, cassava bagasse, and defatted soybean cake were utilized as substrates, and
sugarcane bagasse was used as support. Fermentations were carried out in flasks covered with filter paper at 28°C for 10 d.
The products obtained by SSF were evaluated for their nematicide activity in pot experiments containing one seedling of the
plant Coleus inoculated with the nematode M. incognita. The plants were evaluated 2 mo after inoculation. Fermented products showed a reduction in the number of nematodes. The
best results were obtained with defatted soybean cake, which showed almost 100% reduction in the number of nematodes; the
reduction with coffee husk was 80% and with cassava bagasse was about 60%. |
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Keywords: | Biocontrol Paecilomyces lilacinus Meloidogyne incognita coffee husks cassava bagasse defatted soybean cake sugarcane bagasse solid-state fermentation |
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