Evaluación in vitro de diez cepas de hongos nematófagos para el control de Meloidogyne exigua, Meloidogyne incognita y Radopholus similis

Varela‐Benavides, Ingrid; Durán-Mora, Joaquín; Guzmán-Hernández, Tomás de Jesús

doi:10.18845/tm.v30i1.3062

2017

DOI: 10.18845/tm.v30i1.3062

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Evaluación in vitro de diez cepas de hongos nematófagos para el control de Meloidogyne exigua, Meloidogyne incognita y Radopholus similis

Ingrid Varela‐Benavides¹,

Joaquín Durán-Mora²,

Tomás de Jesús Guzmán-Hernández³

Abstract: <p class="p1">El desarrollo de alternativas al uso de nematicidas, plaguicidas altamente tóxicos, es un tema de importancia en la actualidad. En esta línea ha habido un creciente reconocimiento de la efectividad del control biológico por medio de hongos nematófagos. Por tales razones, y con el fin de determinar la capacidad nematófaga de hongos que habían sido previamente aislados de fincas en la Región Huetar Norte, se establecieron ensayos <em>in vitro,</em> en los que se evaluó la mortalid… Show more

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Cited by 3 publications

References 14 publications

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Biological nematicides as an alternative for control of Meloidogyne incognita populations in yellow pitahaya (Sselenicereus megalanthus).

Vargas,

Pico,

Manobanda

et al. 2024

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Yellow pitahaya in the Ecuadorian Amazon has become one of the most important economic crops in the region. However, pests (nematodes) in the soil have affected up to 100% of the crop's growth stages. Faced with this problem, growers use various chemical nematicides that minimize this impact but cause contamination problems. For this reason, the objective of the research was to evaluate microorganisms that control or reduce the population of Meloidogyne incognita in the pitahaya crop at the greenhouse level. The design was DBCA, and the statistical analysis was performed with the statistical package Infostat 2017, using linear mixed models and Fisher's tests at 5%. The results show that root nodules decrease when P. lilacinum + T. asperellum is applied after nematode injection (261). In addition, the lowest number of nodulations (251) was obtained when microorganisms were applied after nematode inoculation (251 nodulations). Still, when microorganisms were used before, aerial biomass growth was stimulated (384.17 g) even when nematodes were present in the root system. Keywords: microorganisms; nematodes; pitahaya.

show abstract

Biological nematicides as an alternative for control of Meloidogyne incognita populations in yellow pitahaya (Sselenicereus megalanthus).

Vargas,

Pico,

Manobanda

et al. 2024

View full text Add to dashboard Cite

show abstract

Biological nematicides as an alternative for control of Meloidogyne incognita populations in yellow pitahaya (Sselenicereus megalanthus).

Vargas,

Pico,

Manobanda

et al. 2024

View full text Add to dashboard Cite

Yellow pitahaya in the Ecuadorian Amazon has become one of the most important economic crops in the region. However, the presence of pests (nematodes) in the soil has caused up to 100% of the crop's growth stages to be affected. Faced with this problem, growers use various chemical nematicides that minimize this impact but cause contamination problems. For this reason, the objective of the research was to evaluate microorganisms that control or reduce the population of Meloidogyne incognita in the pitahaya crop at the greenhouse level. The design was DBCA, and the statistical analysis was performed with the statistical package Infostat 2017, using linear mixed models and Fisher's tests at 5%. The results show that root nodules decrease when P. lilacinum + T. asperellum is applied after nematode injection (261). In addition, the lowest number of nodulations (251) was obtained when microorganisms were applied after nematode inoculation (251 nodulations). Still, when microorganisms were used before, aerial biomass growth was stimulated (384.17 g) even when nematodes were present in the root system. Keywords: microorganisms; nematodes; pitahaya.

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Utilização De Fungos Benéficos Na Formação De Mudas De Goiabeira Em Solos Infestados Com Nematoides

Silva

Souza

Porto

et al. 2020

NAT

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O nematoide das galhas (Meloidogyne spp.) tem sido um fator limitante ao cultivo da goiabeira no Brasil, pois restringe a produção e a qualidade dos frutos. O controle biológico vem sendo empregado para suprimir nematoides fitopatogênicos e a inoculação com Trichoderma spp. e Pochonia chlamydosporia é um método promissor, contudo poucas pesquisas são relatadas com estes fungos à cerca da cultura da goiabeira. Objetivou-se avaliar a eficiência de Trichoderma harzianum, Trichoderma longibrachiatum e Pochonia chlamydosporia na modulação morfológica do crescimento inicial de mudas de goiabeira ‘Paluma’ em solo naturalmente infestado com Meloidogyne spp. A pesquisa ocorreu na Universidade Estadual do Sudoeste da Bahia – UESB, Campus de Vitória da Conquista - BA em telado experimental. Foram realizadas as análises morfológicas altura da planta, diâmetro do caule, comprimento de raízes, massa fresca e seca da parte aérea e das raízes. Foi possível observar que os fungos de biocontrole não foram eficientes na supressão dos nematoides juvenis durante o período de avaliação, no entanto a inoculação com Trichoderma harzianum, promoveu incremento nas massas fresca e seca da parte aérea e na massa seca das raízes, Pochonia clamydosporia mostrou-se menos eficiente quanto a promoção de crescimento inicial das mudas quando comparadas a Trichoderma spp.Palavras-chave: Psidium guajava; Trichoderma spp.; Pochonia spp.; Meloidogyne spp. USE OF BENEFICIAL FUNGI IN DEVELOPMENT OF GUAVA SEEDLINGS IN NEMATODES INFESTED SOILS ABSTRACT: Root-knot nematode (Meloidogyne spp.) has been a limiting factor to growing guava in Brazil since it restricts yield and fruit quality. Biological control has been employed to suppress phytopathogenic nematodes. The inoculation with Trichoderma spp. and Pochonia chlamydosporia is a promising method; however, studies on the impact of these fungi on guava trees are lacking. This work aimed to assess the efficiency of Trichoderma harzianum, Trichoderma longibrachiatum and Pochonia chlamydosporia in morphological modulation at the early development of ‘Paluma’ guava seedlings grown on a soil naturally infested by Meloidogyne spp. The study took place at the State University of Southeastern Bahia – UESB, campus Vitória da Conquista, Bahia state, Brazil, in a net house. The following morphological traits were evaluated: plant height, stem diameter, root length, and fresh and dry weights of shoots and roots. These fungi as biocontrol agents were not efficient in suppressing juvenile nematodes over the evaluation period; nonetheless, inoculation with Trichoderma harzianum increased fresh and dry weights of shoot as well a root dry weight. Pochonia clamydosporia was less efficient in promoting the early development of seedlings compared to Trichoderma spp.Keywords: Psidium guajava; Trichoderma spp.; Pochonia spp.; Meloidogyne spp.

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Evaluación in vitro de diez cepas de hongos nematófagos para el control de Meloidogyne exigua, Meloidogyne incognita y Radopholus similis

Cited by 3 publications

References 14 publications

Biological nematicides as an alternative for control of Meloidogyne incognita populations in yellow pitahaya (Sselenicereus megalanthus).

Biological nematicides as an alternative for control of Meloidogyne incognita populations in yellow pitahaya (Sselenicereus megalanthus).

Biological nematicides as an alternative for control of Meloidogyne incognita populations in yellow pitahaya (Sselenicereus megalanthus).

Utilização De Fungos Benéficos Na Formação De Mudas De Goiabeira Em Solos Infestados Com Nematoides

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