Co-occurrence patterns between plant-parasitic nematodes and arbuscular mycorrhizal fungi are driven by environmental factors

Ferreira, Bruna Gil; Santana, Marcus Vinícius; Macedo, Renan; Silva, Juliana O.; Rocha, Mara Rúbia da

doi:10.1016/j.agee.2018.05.020

Cited by 18 publications

(7 citation statements)

References 54 publications

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“…The multiblock analysis showed that Ditylenchus, Helicotylenchus, Pratylenchus and Paratylenchus were related to the humidity that occurred in Taliouine while Aphelenchoides, Tylenchus, Tylenchorynchus and Dorylaimus were found in rainy locations of Taznakht. Herein, climatic conditions are the driving force to structure PPN communities particularly through rainfall and humidity (Aït Hamza et al, 2018;Ferreira et al, 2018;Namu et al, 2018). Conversely maximum temperature had an insignificant impact on PPN communities what has been confirmed by Namu et al (2018).…”

Section: Correspondences Of Plant Parasitic Nematodes To Climatic Varmentioning

confidence: 68%

Plant-parasitic nematodes parasitizing saffron in Morocco: Structuring drivers and biological risk identification

Benjlil

Elkassemi

Hamza

et al. 2020

Applied Soil Ecology

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Plant-parasitic nematodes (PPN) are the most destructive of all plant pathogens. They are an economically important group of soil pathogens, causing significant annual damages of up to 25% of world crop production. Morocco is considered to be a highly productive country for the colorant/medicinal/spice saffron (Crocus sativus L.). Taliouine and Taznakht regions are the most productive areas of this valuable neutraceutical. Due to its metabolic profile, and growth forms, saffron is susceptible to many plant diseases, including plant-parasitic nematodes (PPN). This work aims to assess the diversity of PPN communities in soils of Taliouine and Taznakht regions to facilitate understanding of links between their assemblages with biotic and abiotic parameters. Herein, nematode communities were characterized in 163 soil samples collected from 11 rural communes characterized by altitudinal gradients in Taliouine and Taznakht regions. Fifteen PPN genera belonging to 12 families were identified, among which the four genera Ditylenchus, Aphelenchoides, Pratylenchus and Helicotylenchus, potentiate serious limiting factors in saffron production. Their frequencies are respectively 92, 49, 48 and 36% in the area of Taliouine, while in Taznakht they represent 95, 69, 33, and 28% respectively. Regarding the assessment of diversity at different sites, the genus richness (R) index ranges from 2 to 10 distinct genera, whereas the Shannon diversity (H') index varies from 0.9 to 1.5 and the Evenness (E) index tends to 1. The Co-inertia analyses revealed a substantial relationship between nematode communities and soil types. Soil texture is the major factor influencing the presence and the abundance of a considerable portion of genera. Multivariate analyses (MBPLS) indicated links between humidity, rainfall, minimum temperature and PPN taxa, though maximum temperature did not have an impact. Ditylenchus, Helicotylenchus, Pratylenchus and Paratylenchus were related to the humidity and silt soil that developed in Taliouine. Aphelenchoides, Tylenchus, Tylenchorynchus and Dorylaimus were more prevalent in rainy locations and clay soils of Taznakht. Suitable nematode controlling approaches may be applied and preventative measures should be considered at nursery and field level.

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Section: Correspondences Of Plant Parasitic Nematodes To Climatic Varmentioning

confidence: 68%

Plant-parasitic nematodes parasitizing saffron in Morocco: Structuring drivers and biological risk identification

Benjlil

Elkassemi

Hamza

et al. 2020

Applied Soil Ecology

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“…Recent studies have confirmed these mechanisms, for example, mycorrhizas (Rhizophagus intraradices and Funneliformis mosseae) reduce tomato root penetration by false root-knot nematode Nacobbus aberrans (Marro et al, 2018), in the same way as the application of Glomus intraradices, G. mosseae, and G. etunicatum against M. javanica in peach trees (Calvet et al, 2001). In contrast, the increment in root colonization by mycorrhizae (Rhizophagus clarus, Claroideoglomus etunicatum, Gigaspora rosea, G. margarita, Scutellospora calospora, and S. heterogama) caused an increase in the population of nematodes Pratylenchus brachyurus in maize crop (Brito et al, 2018) which is opposite to the effect in cotton (Ferreira et al, 2018). All these mechanisms and their effectiveness on the populations and the capacity of infection of the phytoparasitic nematodes will depend closely on the local environmental conditions.…”

Section: Mycorrhizal Fungimentioning

confidence: 99%

“…All these mechanisms and their effectiveness on the populations and the capacity of infection of the phytoparasitic nematodes will depend closely on the local environmental conditions. In this respect, alterations of potassium, phosphorus and moisture are the main factors negatively involved in the beneficial effect caused by mycorrhizal fungal (Ferreira et al, 2018). Despite some contradictory reports, the use of mycorrhizal fungi for the biological control of plant-parasitic nematodes has been widely studied in numerous crops, as maize (Alvarado-Herrejón et al, 2019), and even in energy crops such as switchgrass (Panicum virgatum) and miscanthus (Miscanthus × giganteus; Emery et al, 2017).…”

Section: Mycorrhizal Fungimentioning

confidence: 99%

Biological Control of Plant-Parasitic Nematodes by Filamentous Fungi Inducers of Resistance: Trichoderma, Mycorrhizal and Endophytic Fungi

2020

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Plant-parasitic-nematodes represent a major threat to the agricultural production of different crops worldwide. Due to the high toxicity of chemical nematicides, it is necessary to develop new control strategies against nematodes. In this respect, filamentous fungi can be an interesting biocontrol alternative. The genus Trichoderma, mycorrhizal and endophytic fungi are the main groups of filamentous fungi studied and used as biological control agents (BCAs) against nematodes as resistance inducers. They are able to reduce the damage caused by plant-parasitic nematodes directly by parasitism, antibiosis, paralysis and by the production of lytic enzymes. But they also minimize harm by space and resource-competition, by providing higher nutrient and water uptake to the plant, or by modifying the root morphology, and/or rhizosphere interactions, that constitutes an advantage for the plant-growth. Besides, filamentous fungi are able to induce resistance against nematodes by activating hormone-mediated (salicylic and jasmonic acid, strigolactones among others) plant-defense mechanisms. Additionally, the alteration of the transport of chemical defense components through the plant or the synthesis of plant secondary metabolites and different enzymes can also contribute to enhancing plant defenses. Therefore, the use of filamentous fungi of the mentioned groups as BCAs is a promising durable biocontrol strategy in agriculture against plant-parasitic nematodes.

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“…Ferreira et al . (2018) observed that high mycorrhizal colonization is associated with low nematode abundance. A reduction in mycorrhizal colonization in the presence of Meloidogyne is well documented in the literature (Borowicz, 2001; Campos, 2020) and can be attributed to competition for space and nutrients in the root environment.…”

Section: Resultsmentioning

confidence: 99%

“…However, seedlings without nematodes showed a significantly higher percentage of mycorrhizal colonization (64%) than seedlings infected with nematodes (56%). Ferreira et al (2018) observed that high mycorrhizal colonization is associated with low nematode abundance. A reduction in mycorrhizal colonization in the presence of Meloidogyne is well documented in the literature (Borowicz, 2001;Campos, 2020) and can be attributed to competition for space and nutrients in the root environment.…”

Section: Meloidogynementioning

confidence: 99%

Arbuscular mycorrhizal fungi decrease Meloidogyne enterolobii infection of Guava seedlings

Sá

Campos

2020

J. Helminthol.

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Guava (Psidium guajava L.) production is prominent in the irrigated fruit growing area of Brazil. However, the parasite Meloidogyne enterolobii (a phytonematode) has caused a decrease in guava production. Arbuscular mycorrhizal fungi (AMF) are known to be beneficial to plants; however, their ability to protect plants against nematodes such as M. enterolobii remains poorly known. This study aimed to monitor M. enterolobii infection in guava seedlings inoculated with three AMF species. After AMF inoculation, the seedlings were grown in sterile soil for 60 days before inoculation with 2000 M. enterolobii eggs. Plant growth parameters, mycorrhizal colonization and the number of Meloidogyne in the roots were determined over time (30 and 60 days after Meloidogyne inoculation). The AMF enhanced guava seedling growth, and reduced the amount of Meloidogyne in the roots at 30 and 60 days after nematode inoculation, indicating that these AMF species could serve as biocontrol agents of M. enterolobii in guava cultivation.

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Co-occurrence patterns between plant-parasitic nematodes and arbuscular mycorrhizal fungi are driven by environmental factors

Cited by 18 publications

References 54 publications

Plant-parasitic nematodes parasitizing saffron in Morocco: Structuring drivers and biological risk identification

Plant-parasitic nematodes parasitizing saffron in Morocco: Structuring drivers and biological risk identification

Biological Control of Plant-Parasitic Nematodes by Filamentous Fungi Inducers of Resistance: Trichoderma, Mycorrhizal and Endophytic Fungi

Arbuscular mycorrhizal fungi decrease Meloidogyne enterolobii infection of Guava seedlings

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