Short communication. A review on the efficacy tests and risk analyses conducted on Chondrostereum purpureum, a potential biocontrol agent, in Finland

Hantula, Jarkko; Hamberg, Leena; Vartiamäki, Henna; Korhonen, K.; Uotila, Antti

doi:10.5424/fs/2012212-02197

Cited by 3 publications

(2 citation statements)

References 28 publications

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“…ex Fr.) Pouzar and Pseudolagarobasidium acaciicola Ginns (Bourdôt et al 2006;Hantula et al 2012;Kotzé et al 2015). In these cases, risk assessments of the agent either required mitigation of infection risk to non-target plants or herbivore species in the form of agent distribution or application restrictions thereby reducing risk, or the agent itself had a low risk of infecting non-target species due to its biology.…”

Section: Adequate Host Range Testingmentioning

confidence: 99%

Biocontrol of weedy Sporobolus grasses in Australia using fungal pathogens

Steinrucken

Vitelli

2023

BioControl

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In Australia there are five weedy Sporobolus grass (WSG) species that heavily impact agricultural industries and native biodiversity. WSG have been the subject of several efforts to find host-specific pathogens with potential for classical and inundative biocontrol. Most of these studies are only discussed in unpublished reports or theses, so in this paper we synthesise the available peer-reviewed and ‘grey’ literature that discuss classical, augmentative and inundative biocontrol of WSG in Australia using fungal pathogens. We consider the hundreds of fungal pathogens previously isolated from Sporobolus hosts on an international and national scale. Of the pathogens investigated for WSG biocontrol previously, the only promising classical biocontrol agent was a smut fungus (Ustilago sporoboli-indici) from South Africa that is now present in Queensland and New South Wales, Australia. Its method of introduction to Australia is unknown. We hence discuss the history and potential for augmentative biocontrol of WSG using U. sporoboli-indici. Next, we summarise inundative biocontrol efforts. Several ascomycetes isolated from Australian WSG populations have been tested in this regard, including species of Nigrospora, Fusarium, Curvularia, Microdochium, Pestalotiopsis, and Neopestalotiopsis. However, a lack of host-specificity or efficacy subsequently precluded their further development, and potential improvements on those inundative biocontrol studies are discussed. Finally, we discuss a collection of endemic fungal taxa isolated from diseased Sporobolus in Australia, which are currently undergoing virulence, pathogenicity, and host-specificity screening as potential inundative biocontrol agents for WSG. Our intention is that the lessons learned from previous studies and summarised herein, will support ongoing development of WSG biocontrol agents in Australia, and more broadly, weed biocontrol using plant pathogens anywhere in the world.

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Section: Adequate Host Range Testingmentioning

confidence: 99%

Biocontrol of weedy Sporobolus grasses in Australia using fungal pathogens

Steinrucken

Vitelli

2023

BioControl

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“…Intentional spreading of pathogenic organisms is always dangerous, and therefore risk analyses should be conducted carefully prior to such actions on a wide scale (e.g., Hantula et al 2012 ). Considering the biocontrol use of C. purpureum , the first problem might be the infection of nontarget trees due to the increased production of basidiospores.…”

Section: Introductionmentioning

confidence: 99%

Role and function of Chondrostereum purpureum in biocontrol of trees

Hamberg

Saksa

Hantula

2020

Appl Microbiol Biotechnol

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A decay fungus, Chondrostereum purpureum (Pers. Ex Fr.) Pouzar, has been investigated in Europe, Northern America and New Zealand for its ability to decay hardwood stumps and thus prevent sprouting. The aim of these investigations has been to find an alternative to mechanical (cutting only) and chemical sprout control (cutting and applying chemicals to stumps in order to prevent sprouting). Mechanical sprout control is not an efficient option due to hardwood tree species’ ability to re-sprout efficiently after cutting, and therefore management costs are high. Chemicals would be efficient but due to their harmful effects on the environment, alternatives are needed. The fungal treatment, i.e., cutting accompanied with C. purpureum inoculum is an environmentally friendly and efficient option for sprout control. This mini-review comprises the role and function of C. purpureum in biocontrol of trees: the ecology of C. purpureum, its sprout control efficacy, factors affecting sprout control efficacy, devices in biological sprout control, potential risks, and the future perspectives of biological sprout control. Key points • A fungus Chondrostereum purpureum is efficient in preventing sprouting of hardwoods • C. purpureum is not sensitive to environmental conditions • Devices should be developed for cost-efficient biological sprout control

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Betula pubescens (Downy birch)

2019

CABI Compendium

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Short communication. A review on the efficacy tests and risk analyses conducted on Chondrostereum purpureum, a potential biocontrol agent, in Finland

Cited by 3 publications

References 28 publications

Biocontrol of weedy Sporobolus grasses in Australia using fungal pathogens

Biocontrol of weedy Sporobolus grasses in Australia using fungal pathogens

Role and function of Chondrostereum purpureum in biocontrol of trees

Betula pubescens (Downy birch)

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