Effect of coating maize seed with entomopathogenic fungi on plant growth and resistance against<i>Fusarium graminearum</i>and<i>Costelytra giveni</i>

Rivas-Franco, Federico; Hampton, J. G.; Morán-Diez, María E.; Narciso, Josefina O.; Rostás, Michael; Wessman, Per; Jackson, Trevor A.; Glare, Travis R.

doi:10.1080/09583157.2019.1611736

Cited by 30 publications

(35 citation statements)

References 41 publications

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“…In a study conducted in New Zealand, coating corn seed with B. bassiana and Metarhizium spp. provided protection against a disease as well as an insect pest [69]. There was a 22%–44% reduction in the root rot caused by Fusarium graminearum , along with up to 67% infection in the larvae of the scarabeid beetle Costelytra giveni (entomopathogenic effect) from the EPF treatments.…”

Section: Disease Antagonismmentioning

confidence: 99%

Non-Entomopathogenic Roles of Entomopathogenic Fungi in Promoting Plant Health and Growth

Dara

2019

Insects

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Multiple genera of hypocrealean fungi infect and kill a wide variety of arthropod pests. Several formulations based on these soilborne fungi are commercially available as biopesticides for controlling urban, garden, greenhouse, and agricultural pests. These fungi are an important part of integrated pest management strategies to maintain pest control efficacy, reduce the risk of chemical insecticide resistance, and offer environmentally sustainable pest suppression. While the entomopathogenic or pest management role of these fungi is well documented, several studies in the past decade or two have provided insights into their relationship with plants, soil, and plant pathogens, and their additional roles in promoting plant growth and health. This review highlights these endophytic, mycorrhiza-like, and disease-antagonizing roles of entomopathogenic fungi.

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Section: Disease Antagonismmentioning

confidence: 99%

Non-Entomopathogenic Roles of Entomopathogenic Fungi in Promoting Plant Health and Growth

Dara

2019

Insects

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“…Another interesting feature of some entomopathogenic fungi like Metarhizium and Beauveria is their natural ability to associate endophytically with plant roots and to colonize the rhizosphere (Hu and St. Leger, 2002;Vega et al, 2009;Rivas-Franco et al, 2019). This property not only allows entomopathogenic fungi to persist in the root system, but also fulfill additional ecological roles such as antagonism of plant pathogens, plant growth promotion, biofertilization, and promotion of the plant induced resistance (Goettel et al, 2008;Vega et al, 2009;Sasan and Bidochka, 2012;Rivas-Franco et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Finally, either hyphae from microsclerotia or from conidia will interact and associate with the growing roots. Entomopathogenic fungal colonization of the rhizosphere allows fungal persistence, exerting biocontrol activity against the pests or plant pathogens threatening plant roots (Rivas-Franco et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies with seed treatments with different species of Metarhizium, resulted in 50% of larvae of Anomala cincta (Coleoptera: Rutelidae) or up to 60% of Costelytra giveni larvae (Coleoptera: Scarabaeidae) infected with the entomopathogenic fungi (Peña-Peña et al, 2015;Rivas-Franco et al, 2019). However, the biocontrol ability of Metarhizium is not limited only to insects but also against plant pathogens like Fusarium.…”

Section: Introductionmentioning

confidence: 99%

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Production of Microsclerotia From Entomopathogenic Fungi and Use in Maize Seed Coating as Delivery for Biocontrol Against Fusarium graminearum

Rivas-Franco

Hampton

Altier

et al. 2020

Front. Sustain. Food Syst.

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The commercial use of the entomopathogenic fungi Metarhizium spp. in biopesticides has gained more interest since the discovery that several species of this genus are able to colonize roots. In general, commercial products with Metarhizium are formulated based on conidia for insect pest control. The process of mass production, harvesting, and formulation of infective conidia can be detrimental for conidial viability. Entomopathogenic fungi such as Metarhizium spp. are able to produce high concentrations of resistant structures, known as microsclerotia, when grown in liquid media. Microsclerotia are desiccation tolerant, with excellent storage stability, and are capable of producing high quantities of infective conidia after rehydration. The aim of this study was to evaluate microsclerotia production by different isolates of Metarhizium spp. and determine the effect of microsclerotia coated onto maize seeds on plant growth in the presence of soil-borne pathogen Fusarium graminearum. On average, ~1 × 105 microsclerotia/mL were produced by selected isolates of M. anisopliae (A1080 and F672) and Metarhizium robertsii (F447). Microsclerotia were formulated as granules with diatomaceous earth and used for seed coating, after which propagules produced around 5 × 106 CFU/g of seeds. In the presence of the plant pathogen, maize plants grown from untreated seeds had the lowest growth, while plants treated with the Metarhizium microsclerotia had significantly greater growth than the control plants. Hyphae were observed growing on and in root tissues in all the Metarhizium spp. treatments but not in samples from control plants. Metarhizium hyphal penetration points' on roots were observed 1 month after sowing, indicating the fungi were colonizing roots as endophytes. The results obtained indicate that microsclerotia can be coated onto seeds, providing plant protection against soil plant pathogens and a method to establish Metarhizium in the ecto- and endo-rhizosphere of maize roots, allowing the persistence of this biocontrol agent.

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“…They also infest wireworms as naturally occurring soil fungi (Kabaluk et al, 2005). In addition to causing pathogenicity in pest insects, EPF also have other beneficial functions as they enhance plant growth and mineral nutrition and exclude phytopathogens form rhizosphere niches (Herbst et al, 2017;Rivas-Franco et al, 2019;Ahmad et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Bioaugmentation of Entomopathogenic Fungi for Sustainable Agriotes Larvae (Wireworms) Management in Maize

2020

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Soil microorganisms influence biotic and abiotic stress tolerance of crops. Most interactions between plant symbiotic and non-symbiotic soil microorganisms and plants occur in the rhizosphere and are sustained through plant exudation/rhizodeposition. Bioaugmentation, i.e., the introduction or amplification of certain plant beneficial microbes (e.g., entomopathogenic fungi) into the rhizosphere, could contribute to controlling insect crop pests and replacing chemical, environmentally unfriendly insecticides. Wireworms, the soil-burrowing larval stages of click beetles (Coleoptera: Elateridae), are major pests of crops including maize, wheat and potatoes, worldwide. Alternative strategies for controlling wireworms are needed because several chemical pesticides used successfully in the past are being phased out because of their ecotoxicity. Therefore, virulence to Agriotes lineatus L. wireworms and plant beneficial traits of entomopathogenic fungi were investigated in a series of laboratory experiments. Tested taxa included environmentally retrieved Metarhizium brunneum Petch. (two strains), M. robertsii Bisch., Rehner & Humber (Hypocreales: Clavicipitaceae), and Beauveria brongniartii (Sacc.) Petch. and commercially formulated B. bassiana (Bals.-Criv.) Vuill. (Cordycipitaceae) and Bacillus thuringiensis Berliner 1915 var. kurstaki. In-house reared larvae were dipped in conidial suspension, and maize and wheat seeds were coated with fungal conidia. Metarhizium brunneum strains 1154 and 1868 significantly increased wireworm mortality. Fungi were significantly more often re-isolated from maize than wheat rhizoplanes in laboratory assays. The strains tested were rarely isolated as endophytes. Metarhizium brunneum strain 1154 stimulated wheat growth, while M. robertsii 1880 stimulated maize growth, whereas M. brunneum 1868 and others did not affect root or shoot length or plant biomass significantly in laboratory settings. Metarhizium brunneum strain 1868, re-isolated most often from maize rhizoplane, caused the highest wireworm mortality. It was further evaluated whether M. brunneum 1868 can protect maize varieties FeroXXY, LG 34.90 and Chapalu from wireworm damage and promote plant growth at field conditions. Plants of all three varieties stemming from seeds treated with conidia of M. brunneum 1868 showed significantly less wireworm damage 3 to 4 weeks after sowing (5

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Effect of coating maize seed with entomopathogenic fungi on plant growth and resistance againstFusarium graminearumandCostelytra giveni

Cited by 30 publications

References 41 publications

Non-Entomopathogenic Roles of Entomopathogenic Fungi in Promoting Plant Health and Growth

Non-Entomopathogenic Roles of Entomopathogenic Fungi in Promoting Plant Health and Growth

Production of Microsclerotia From Entomopathogenic Fungi and Use in Maize Seed Coating as Delivery for Biocontrol Against Fusarium graminearum

Bioaugmentation of Entomopathogenic Fungi for Sustainable Agriotes Larvae (Wireworms) Management in Maize

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