Interactions between an arbuscular mycorrhizal fungus (Scutellospora heterogama) and the root-knot nematode (Meloidogyne incognita) on sweet passion fruit (Passiflora alata)

Anjos, Érika Cristina Teixeira dos; Cavalcante, Uided Maaze Tiburcio; Gonçalves, Danielle Maria Correia; Pedrosa, Elvira M. R.; Santos, Venézio Felipe dos; Maia, Leonor Costa

doi:10.1590/s1516-89132010000400008

Cited by 41 publications

(20 citation statements)

References 26 publications

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“…These mutual negative effects occur when fungi and nematodes are competing for space and nutrients (Schouteden et al, 2015). For example, the fungus Scutellospora heterogama exerted a biocontrol effect on the sedentary endoparasitic nematode Meloidogyne incognita (reproduction was reduced) only when it was pre-inoculated whereas co-inoculation had no effect (Dos Anjos et al, 2010). Such observations have also been made for migratory endoparasitic nematodes.…”

Section: Discussionmentioning

confidence: 99%

Selecting Native Arbuscular Mycorrhizal Fungi to Promote Cassava Growth and Increase Yield under Field Conditions

et al. 2016

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The use of arbuscular mycorrhizal fungal (AMF) inoculation in sustainable agriculture is now widespread worldwide. Although the use of inoculants consisting of native AMF is highly recommended as an alternative to commercial ones, there is no strategy to allow the selection of efficient fungal species from natural communities. The objective of this study was (i) to select efficient native AMF species (ii) evaluate their impact on nematode and water stresses, and (iii) evaluate their impact on cassava yield, an important food security crop in tropical and subtropical regions. Firstly, native AMF communities associated with cassava rhizospheres in fields were collected from different areas and 7 AMF species were selected, based upon their ubiquity and abundance. Using these criteria, two morphotypes (LBVM01 and LBVM02) out of the seven AMF species selected were persistently dominant when cassava was used as a trap plant. LBVM01 and LBVM02 were identified as Acaulospora colombiana (most abundant) and Ambispora appendicula, respectively, after phylogenetic analyses of LSU-ITS-SSU PCR amplified products. Secondly, the potential of these two native AMF species to promote growth and enhance tolerance to root-knot nematode and water stresses of cassava (Yavo variety) was evaluated using single and dual inoculation in greenhouse conditions. Of the two AMF species, it was shown that A. colombiana significantly improved the growth of the cassava and enhanced tolerance to water stress. However, both A. colombiana and A. appendicula conferred bioprotective effects to cassava plants against the nematode Meloidogyne spp., ranging from resistance (suppression or reduction of the nematode reproduction) or tolerance (low or no suppression in cassava growth). Thirdly, the potential of these selected native AMF to improve cassava growth and yield was evaluated under field conditions, compared to a commercial inoculant. In these conditions, the A. colombiana single inoculation and the dual inoculation significantly improved cassava yield compared to the commercial inoculant. This is the first report on native AMF species exhibiting multiple benefits for cassava crop productivity, namely improved plant growth and yield, water stress tolerance and nematode resistance.

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Section: Discussionmentioning

confidence: 99%

Selecting Native Arbuscular Mycorrhizal Fungi to Promote Cassava Growth and Increase Yield under Field Conditions

et al. 2016

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“…AM fungi have the ability to induce systemic resistance against plant-parasitic nematodes in a root system (Elsen et al 2008). dos Anjos et al (2010) demonstrated that the establishment of an AM fungus before nematode infection reduced reproduction of the root-knot nematode Meloidogyne incognita and reduced disease severity in infested soil. A consortium of AM fungi suppressed Fusarium wilt of cucumber and showed potential for biocontrol in greenhouse agroecosystems (Hu et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Suppression of the root-knot nematode [Meloidogyne incognita (Kofoid & White) Chitwood] on tomato by dual inoculation with arbuscular mycorrhizal fungi and plant growth-promoting rhizobacteria

Runjin

Mei

et al. 2011

Mycorrhiza

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Arbuscular mycorrhizal (AM) fungi and plant growth-promoting rhizobacteria (PGPR) have potential for the biocontrol of soil-borne diseases. The objectives of this study were to quantify the interactions between AM fungi [Glomus versiforme (Karsten) Berch and Glomus mosseae (Nicol. & Gerd.) Gerdemann & Trappe] and PGPR [Bacillus polymyxa (Prazmowski) Mace and Bacillus sp.] during colonization of roots and rhizosphere of tomato (Lycopersicon esculentum Mill) plants (cultivar Jinguan), and to determine their combined effects on the root-knot nematode, Meloidogyne incognita, and on tomato growth. Three greenhouse experiments were conducted. PGPR increased colonization of roots by AM fungi, and AM fungi increased numbers of PGPR in the rhizosphere. Dual inoculations of AM fungi plus PGPR provided greater control of M. incognita and greater promotion of plant growth than single inoculations, and the best combination was G. mosseae plus Bacillus sp. The results indicate that specific AM fungi and PGPR can stimulate each other and that specific combinations of AM fungi and PGPR can interact to suppress M. incognita and disease development.

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“…Scherer et al (2011), em trabalho com cafeeiro (Coffea arabica), constataram que os FMA apresentaram bom potencial para uso como agente de biocontrole de Meloidogyne paranaensis. Anjos et al (2010) verificaram que o estabelecimento de micorrizas antes da infecção por M. incognita contribuiu para a redução da gravidade dos sintomas causados pelo mesmo em maracujazeiro-doce (Passiflora alata).…”

Section: Resultsunclassified

“…Em alguns experimentos, a inoculação simultânea do fungo e do patógeno tornou as plantas intolerantes ao parasitismo do mesmo (TALAVERA et al, 2001;ANJOS et al, 2010). Tabela 2 -Número de galhas, número de ovos de nematoide por grama de raiz e colonização micorrízica nas mudas de goiabeira A redução do número de ovos nas raízes micorrizadas foi expressiva e ocorreu devido à menor reprodução do nematoide; outra explicação para esse fato é a competição direta dos FMA com os nematoides pelos nutrientes das raízes, assim como a competição por locais de infecção e colonização.…”

Section: Tabela 1 -Características Dos Isolados Micorrízicos Utilizadunclassified

Controle de Meloidogyne enterolobii em mudas de goiabeira com fungos micorrízicos isolados do Cerrado baiano

Pinheiro¹,

Souza²,

Coimbra³

2014

Agro@mbiente

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Resumo -O nematoideMeloidogyne enterolobii causa severos danos à goiabeira, sendo um fator limitante à produção. Os fungos micorrízicos arbusculares (FMA) podem prejudicar o desenvolvimento de algumas espécies de nematoides fitoparasitos, reduzindo a ovoposição e o número de galhas no sistema radicular de plantas infectadas. Com o presente trabalho, objetivouse avaliar o potencial de FMA, isolados de solos de cerrado nativo, em reduzir a infectividade de M. enterolobii em mudas de goiabeira. Para tanto, foi conduzido um experimento em casa de vegetação, em blocos casualizados com oito repetições, no qual se avaliou a porcentagem de colonização micorrízica, o número de galhas e de ovos do nematoide citado por grama de raiz, na presença de oito diferentes isolados fúngicos, e a testemunha, sem presença de fungo, em goiabeira. Todos os isolados de FMA oriundos do bioma cerrado foram eficientes na colonização das raízes, reduziram o número de galhas do nematoide e afetaram a reprodução; no entanto, o grau de colonização radicular pelos fungos micorrízicos, isoladamente, não é um indicativo de controle da infectividade desse patógeno, já que alguns isolados que apresentaram maior colonização foram menos eficazes na sua redução, de forma que os isolados de FMA avaliados diferiram quanto à eficiência em reduzir a reprodução de M. enterolobii em mudas de goiabeira. Palavras-chave -Micorrizas. Nematoide das galhas. Psidium guajava.Abstract -The nematode Meloidogyne enterolobii causes severe damage to guava tree, being a limiting factor to production. Arbuscular mycorrhizal fungi (AMF) can impair the development of some species of plant parasitic nematodes by reducing oviposition and the number of galls in the roots of infected plants. The present research aimed to evaluate the potential of AMF, isolated from soils of native savanna, in reducing the infectivity of M. enterolobii in guava tree seedlings. For this purpose, an experiment was conducted in a greenhouse in randomized block design with eight replications, in which we evaluated the percentage of mycorrhizal colonization, the number of galls and eggs of the mentioned nematode per gram of root, in the presence of eight different fungal isolates, and the control without the presence of the fungus, in the guava tree. All AMF isolates from the savanna were effective on root colonization, reduced the number of nematode's galls and affected their reproduction; however, the degree of root colonization by mycorrhizal fungi, alone, is not indicative of infectivity control of this pathogen, since some isolates showing increased colonization were less effective in reducing it, so that the evaluated AMF isolates differed regarding the efficiency in reducing the reproduction of M. enterolobii in guava tree seedlings.

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Interactions between an arbuscular mycorrhizal fungus (Scutellospora heterogama) and the root-knot nematode (Meloidogyne incognita) on sweet passion fruit (Passiflora alata)

Abstract: The effects of inoculation of sweet passion fruit plants with the arbuscular mycorrhizal (AM) fungus

Cited by 41 publications

References 26 publications

Selecting Native Arbuscular Mycorrhizal Fungi to Promote Cassava Growth and Increase Yield under Field Conditions

Selecting Native Arbuscular Mycorrhizal Fungi to Promote Cassava Growth and Increase Yield under Field Conditions

Suppression of the root-knot nematode [Meloidogyne incognita (Kofoid & White) Chitwood] on tomato by dual inoculation with arbuscular mycorrhizal fungi and plant growth-promoting rhizobacteria

Controle de Meloidogyne enterolobii em mudas de goiabeira com fungos micorrízicos isolados do Cerrado baiano

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