Identification of a Penicillium urticae metabolite which inhibits Beauveria bassiana

Shields, Maria; Lingg, A. J.; Heimsch, Richard C.

doi:10.1016/0022-2011(81)90104-x

Cited by 22 publications

(15 citation statements)

References 13 publications

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“…Metabolites from other fungi have also been reported to act against entomopathogenic fungi. For example, a Penicillium urticae Bainier metabolite known as patulin has been shown to inhibit growth and germination of B. bassiana (Shields et al, 1981).…”

Section: Discussionmentioning

confidence: 99%

Entomopathogenic fungal endophytes

Vega¹,

Posada²,

Aime³

et al. 2008

Biological Control

445

238

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Fungal endophytes are quite common in nature and some of them have been shown to have adverse effects against insects, nematodes, and plant pathogens.Our research program is aimed at using fungal endophytes-mediated plant defense as a novel biological control mechanism against the coffee berry borer, the most devastating pest of coffee throughout the world. A survey of fungal endophytes in coffee plants from Hawaii, Colombia, Mexico, and Puerto Rico has revealed the presence of various genera of fungal entomopathogens, including Acremonium, Beauveria, Cladosporium, Clonostachys, and Paecilomyces. Two of these, B. bassiana and Clonostachys rosea, were tested against the coffee berry borer and were shown to be pathogenic. This paper reviews the possible mode of action of entomopathogenic fungal endophytes. Published by Elsevier Inc.

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Section: Discussionmentioning

confidence: 99%

Entomopathogenic fungal endophytes

Vega¹,

Posada²,

Aime³

et al. 2008

Biological Control

445

238

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“…In the non-sterile soil, biotic antagonism may have inhibited germination of B. bassiana conidia or prevented the fungus from penetrating roots. For instance, the common soil fungus Penicillium urticae produces a water soluble inhibitor of B. bassiana (Shields et al 1981). Another common soil saprophyte, Aspergillus clavatus, also produces metabolites that are fungicidal to B. bassiana (Majchrowicz et al 1990).…”

Section: Growth Medium Plant Parts Colonized (%)mentioning

confidence: 99%

Effect of inoculation method and plant growth medium on endophytic colonization of sorghum by the entomopathogenic fungus Beauveria bassiana

2009

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A study was conducted to determine the effect of inoculation method and plant growth medium on colonization of sorghum by an endophytic Beauveria bassiana. Colonization of leaves, stems, and roots by B. bassiana was assessed 20-days after application of the fungus. Although B. bassiana established as an endophyte in sorghum leaves, stems, and roots regardless of inoculation method (leaf, seed, or soil inoculation), plant growth medium (sterile soil, non-sterile soil, or vermiculite) apparently influenced colonization rates. Seed inoculation with conidia caused no stem or leaf colonization by the fungus in non-sterile soil but did result in substantial endophytic colonization in vermiculite and sterile soil. Leaf inoculation did not result in root colonization, regardless of plant growth medium. Endophytic colonization was greater in leaves and stems than roots. Endophytic colonization by B. bassiana had no adverse effects on the growth of sorghum plants. Leaf inoculation with a conidial suspension proved to be the best method to introduce B. bassiana into sorghum leaves for plants growing in either sterile or nonsterile soil. Further research should focus on the virulence of endophytic B. bassiana against sorghum stem borers.

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“…Shields, Lingg, and Heimsch (1981) identified patulin, a water-soluble metabolite of Penicillium urticae, which was inhibitory to conidial germination and growth of B. bassiana. However, many other compounds produced by fungal and bacterial agents are known to be fungistatic.…”

Section: Micro-organismsmentioning

confidence: 99%

Natural and released inoculum levels of entomopathogenic fungal biocontrol agents in soil in relation to risk assessment and in accordance with EU regulations

Scheepmaker

Butt

2010

Biocontrol Science and Technology

123

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Entomopathogenic fungi being developed as biological control agents (BCAs) may have the potential to spread and become established in the environment. For registration purposes, the risks concerning their persistence have to be evaluated according to EU legislation which requires the decline of BCAs to acceptable background levels unless related risks are acceptable. In order to deal with this requirement, applicants of a BCA need to give information on its persistence and natural background levels. For risk assessors and registration authorities guidance on how to evaluate data on natural background levels of indigenously occurring species (0same species as the introduced BCA) is needed. For this purpose, an overview is presented on background levels of some indigenous fungi as well as persistence data of some applied fungal BCAs. Data were restricted to commerical species. It was found that for the species Metarhizium anisopliae, Beauveria bassiana and Beauveria brongniartii natural densities were relatively low and introduced strains of these fungi decreased gradually in time. Many factors were found in the literature, such as intrinsic, edaphic, biotic, climatic, and cultural factors, that could explain this decline.

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Identification of a Penicillium urticae metabolite which inhibits Beauveria bassiana

Cited by 22 publications

References 13 publications

Entomopathogenic fungal endophytes

Entomopathogenic fungal endophytes

Effect of inoculation method and plant growth medium on endophytic colonization of sorghum by the entomopathogenic fungus Beauveria bassiana

Natural and released inoculum levels of entomopathogenic fungal biocontrol agents in soil in relation to risk assessment and in accordance with EU regulations

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