Impacts of biocontrol products on Rhizoctonia disease of potato and soil microbial communities, and their persistence in soil

Larkin, Robert P.

doi:10.1016/j.cropro.2016.08.012

Cited by 35 publications

(20 citation statements)

References 49 publications

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“…Those compounds are toxic enzymes that are being used by the fungi to inhibit the growth of other competitors in the ecological niche (Berg et al 2004). Due to the capacity to produce chitinase the fungi belonging to Trichoderma can act as a mycoparasite through the degradation of pathogen cell walls (Benítez et al 2004;El-Katatny et al 2000;Kubicek et al 2001;Larkin 2016;Ozbay and Newman 2004). The spectrum of pathogens affected by Trichoderma sp.…”

Section: Trichoderma Sppmentioning

confidence: 99%

Review report on the role of bioproducts, biopreparations, biostimulants and microbial inoculants in organic production of fruit

Pylak

Oszust

Frąc

2019

Rev Environ Sci Biotechnol

105

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The demand for ecologically cultivated fruits is growing each year, but the yields in organic farming are still lower than the yields in conventional farming. Moreover plant pathogens are a serious threat in organic fruit production and the assortment of conventional pesticides is limited in organic farming. The European Commission has established regulations that state which types of bioproducts can be used in organic farming. Appropriately chosen biopreparations might be a solution to this problem. Biopreparations are products used to inhibit the growth of pathogenic fungi or bacteria, stimulate plants growth and enhance plant nutrient uptake. They can be composed of plant growth promoting bacteria and fungi, plant extracts or animals-derived compounds. The second category of bioproducts useful for enhancing yield and nutrient uptake are biostimulants. They can be composed of microorganisms, protein hydrolysates, seaweed extracts and other substances. Bacteria, fungi and yeasts are used in biocontrol of plant pathogens and in enhancing plants growth by producing hormone-like substances and reducing symptoms of environmental stress caused by weather or soil factors such as drought or low nutrient availability.

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Section: Trichoderma Sppmentioning

confidence: 99%

Review report on the role of bioproducts, biopreparations, biostimulants and microbial inoculants in organic production of fruit

Pylak

Oszust

Frąc

2019

Rev Environ Sci Biotechnol

105

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“…At location 1, fatty acid classes and ratios associated with the biocontrol treatments varied considerably among rotations, demonstrating the complex effects among rotations and biocontrol treatments on soil microbial communities. Previous research has documented that biocontrol organisms can be greatly affected by the indigenous microbial communities present but can also have significant effects on those microbial communities [24,34,56]. In one study [28], a mixture of various biocontrol organisms was more effective within a barley/ryegrass rotation than either a barley/clover or potato rotation, indicating the importance of a rotation that adequately supports the biocontrol activities of the added microbial agent.…”

Section: Discussionmentioning

confidence: 98%

“…Previously, Brewer and Larkin [22] evaluated many of these organisms against Rhizoctonia disease on potato in greenhouse trials and observed strains of the rhizosphere bacteria Bacillus subtilis and the fungi Trichoderma virens and Laetisaria arvalis to be among the most effective biocontrol organisms tested, reducing stem canker and black scurf by 30% to 60%. In subsequent trials, commercially available formulations of B. subtilis and T. virens provided some control of Rhizoctonia disease of potato in the field [23,24]. One strategy to improve disease control is to combine the use of biocontrol organisms with more effective crop rotations [22,25,26].…”

Section: Introductionmentioning

confidence: 99%

Effects of Crop Rotation and Biocontrol Amendments on Rhizoctonia Disease of Potato and Soil Microbial Communities

Larkin

Brewer

2020

Agriculture

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Rotation crops and biocontrol amendments were investigated for suppression of Rhizoctonia solani on potato (Solanum tuberosum) and their interactive effects on soil microbial communities. Greenhouse trials were conducted to evaluate selected rotation crops, including barley, common and “Lemtal” ryegrass, clover, potato, and combinations of barley with ryegrass or clover, for their effects on populations of R. solani and Rhizoctonia disease. Potato and clover preceding potato resulted in higher disease severity than most other rotations, whereas ryegrass reduced stem canker severity. In addition, all ryegrass treatments resulted in substantially higher populations of R. zeae. Field trials evaluating selected biocontrol treatments in combination with different rotations were conducted at two locations in Maine. Potatoes were treated with the biocontrol organisms Laetisaria arvalis, Trichoderma virens, or Bacillus subtilis and planted following rotation crops of barley and ryegrass, barley and clover, or potato. The barley/ryegrass rotation significantly reduced incidence and severity of stem canker and increased tuber yield at one location. Efficacy of the biocontrol treatments varied by rotation and location, with L. arvalis and T. virens reducing black scurf in some rotations and increasing some aspects of tuber yield at one location. Soil microbial community characteristics differed among rotation crops and biocontrol treatments. Significant crop by biocontrol interactions were observed demonstrating the complex interactions among rotation crops, biocontrol treatments, and soil microbial communities, as well as indicating that biocontrol can be enhanced within beneficial rotations.

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“…Bacterias y levaduras son comúnmente aisladas de las superficies de las plantas y suelo (Sharma et al, 2009;Larkin, 2016); sin embargo, existen otros ambientes como el océano donde pudieran aislarse microorganismos con capacidad antagónica igual de eficientes que los fungicidas sintéticos. Los estudios en los últimos años sobre la microflora oceánica se han basado principalmente en describir sus propiedades farmacéuticas, tales como antimicrobianos, antituberculoso, antiviral, antiparasitario, antihelmíntico, entre otros (Dewapriya y Kim, 2014;Jin et al, 2016).…”

Section: Introductionunclassified

Potencial antagónico de bacterias y levaduras marinas para el control de hongos fitopatógenos

Montiel¹,

García²,

Bastidas

et al. 2018

Remexca

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La aplicación de fungicidas sintéticos es una práctica común en el control de hongos fitopatógenos. Sin embargo, su uso de manera indiscriminada ha traído problemas para la salud humana, animal, medio ambiente y ha generado resistencia en los fitopatógenos. En la búsqueda de alternativas, el control biológico usando microorganismos puede ser una opción eficiente al uso de fungicidas sintéticos. Aunque bacterias y levaduras aisladas de suelo y plantas han sido evaluadas como agentes de control biológico, la búsqueda de nuevos antagonistas continúa. La microflora oceánica puede ser una opción para la selección de nuevos agentes antagonistas. El objetivo de este estudio fue evaluar el potencial antagónico de diferentes bacterias (Stenotrophomonas rhizophila, Bacillus amyloliquefaciens y B. subtilis) y levaduras (Debaryomyces hansenii, Cryptococcus diffluens y Rhodotorula minuta) aisladas previamente de una laguna hiperhialina contra 13 hongos fitopatógenos de importancia agronómica. Los resultados muestran que diferentes cepas de la bacteria S. rhizophila fueron las que ejercieron mayor inhibición sobre la germinación de esporas y crecimiento micelial de todos los hongos fitopatógenos, superando a los tratamientos con fungicidas sintéticos. Dentro de las levaduras destacaron las cepas de D. hansenii. De acuerdo con su capacidad antagónica, los microorganismos marinos pueden ser una opción para el manejo de enfermedades ocasionadas por hongos fitopatógenos.

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Impacts of biocontrol products on Rhizoctonia disease of potato and soil microbial communities, and their persistence in soil

Cited by 35 publications

References 49 publications

Review report on the role of bioproducts, biopreparations, biostimulants and microbial inoculants in organic production of fruit

Review report on the role of bioproducts, biopreparations, biostimulants and microbial inoculants in organic production of fruit

Effects of Crop Rotation and Biocontrol Amendments on Rhizoctonia Disease of Potato and Soil Microbial Communities

Potencial antagónico de bacterias y levaduras marinas para el control de hongos fitopatógenos

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