Influence of Strain Specificity and Culture Conditions on Terpene Production by Fungi

Sprecher, Ewald; Hanssen, Hans-Peter

doi:10.1055/s-2007-971398

Cited by 25 publications

(10 citation statements)

References 5 publications

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“…Overall,12 of the 17 VOCs whose production was found to be significantly affected by treatment (Table ) were sesquiterpenes. These compounds are commonly associated with wood and fungi (Sprecher & Hanssen, , ; Fäldt et al ., ; Hynes et al ., ), though some saproxylic Coleoptera and Hymenoptera are also known to emit them (e.g. Pettersson, ).…”

Section: Discussionmentioning

confidence: 99%

Seeing the trees for the wood – beech (Fagus sylvatica) decay fungal volatiles influence the structure of saproxylic beetle communities

Leather

Baumgart

Evans

et al. 2013

Insect Conserv Diversity

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Two experiments were conducted to investigate the role of basidiomycetes and volatiles in the ecology of saproxylic Coleoptera. Volatile organic compounds (VOCs) were sampled from beech (Fagus sylvatica) logs experimentally inoculated with the basidiomycetes Stereum hirsutum, Coriolus versicolor, Phanerochaete velutina, Hypholoma fasiculare, Bjerkandera adusta both singly and in various combinations. Volatile emissions were found to be in accordance with amounts detectable to insects suggesting that in a natural decay situation, saproxylic volatiles are readily available as insect semiochemicals. Furthermore, fungal community structure was found to significantly affect the volatile profile of decaying wood, with specific VOCs associated with particular fungal treatments. Thus, volatiles of fungal origin are a strong potential source of semiochemicals for those insects utilising the saproxylic habitat and their natural enemies. Beetles were reared from logs inoculated with the same basidiomycete treatments as described earlier and a total of 604 individuals comprising 84 species were obtained. Eleven species (Cis boleti, C. micans, Dacne bipustulata, Latridius consimilis, Mycetophagus atomarius, M. quadripustulatus, Octotemnus glabriculus, Platystomus albinos, Ptilinus pectinicornis, Stictoleptura scutellata, Tomoxia bucephala) exhibited significant associations with one or more fungal treatments. Explanations are provided for the various beetle–fungus associations observed. The data set is notable for the presence of various wood boring species that tend to be absent in experiments where volatiles from fungi are presented in isolation. Coarse woody debris (CWD) and its interaction with fungi CWD, are shown to give off VOCs of varying degrees of specificity. These VOCs are potential semiochemicals for saproxylic insects and may mediate fungus/CWD‐specific interactions. We conclude that future work in this direction would be profitable.

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Section: Discussionmentioning

confidence: 99%

Seeing the trees for the wood – beech (Fagus sylvatica) decay fungal volatiles influence the structure of saproxylic beetle communities

Leather

Baumgart

Evans

et al. 2013

Insect Conserv Diversity

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“…Pre-cultures of C. cinerea were prepared from a mycelium block (1 cm 2 ) as inoculum, which was excised from the agar plate and placed in a 300 mL Erlenmeyer flask containing 100 mL malt extract medium. After treatment with an Ultra Turrax homogenizer (Ika Werke GmbH & CO. KG, Staufen, Germany) the culture was incubated for 3 days at 150 rpm and 24 • C. For the production of lipolytic enzymes, malt extract medium, standard nutrient liquid (SNL) medium without glucose [24], and a mineral salt medium [25] were tested as main culture media to optimize the enzyme production. The main cultures were prepared in 500 mL Erlenmeyer flasks containing 250 mL medium, which was inoculated by transferring 20 mL of the pre-culture into each flask.…”

Section: Cultivation and Enzyme Productionmentioning

confidence: 99%

Purification and identification of a novel cutinase from Coprinopsis cinerea by adsorptive bubble separation

Merz

Schembecker

Riemer

et al. 2009

Separation and Purification Technology

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“…Marked differences in the production of volatile metabolites have been reported between closely related species and even between strains of the same fungus (4,5,13). This was also confirmed for molds occurring on wheat (2).…”

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confidence: 99%

Volatile metabolites produced by six fungal species compared with other indicators of fungal growth on cereal grains

Börjesson

Stöllman

Schnürer

1992

Appl Environ Microbiol

125

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Six fungal species, Penicillium brevicompactum, P. glabrum, P. roqueforti, AspergiUusflavus, A. versicolor, and A. candidus, were inoculated on moistened and autoclaved wheat and oat grains. They were cultivated in glass vessels provided with an inlet and outlet for air. Air was passed through the vessels to collect volatile fungal metabolites on porous polymer adsorbents attached to the outlet. Samples were collected at two fungal growth stages. Adsorbed compounds were thermally desorbed, separated by gas chromatography, and identified by mass spectrometry. Differences in the production of volatile metabolites depended more on the fungal species than on the grain type. The fungal growth stage was not an important factor determining the composition of volatiles produced. 3-Methylfuran was produced in similar amounts regardless of the fungal species and substrate (oat versus wheat). The production of volatile metabolites was compared with the production of ergosterol and CO2 and the number of CFU. The production of volatile metabolites was more strongly correlated with accumulated CO2 production than with actual CO2 production and more strongly correlated with ergosterol contents of the grain than with numbers of CFU.

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Influence of Strain Specificity and Culture Conditions on Terpene Production by Fungi

Cited by 25 publications

References 5 publications

Seeing the trees for the wood – beech (Fagus sylvatica) decay fungal volatiles influence the structure of saproxylic beetle communities

Seeing the trees for the wood – beech (Fagus sylvatica) decay fungal volatiles influence the structure of saproxylic beetle communities

Purification and identification of a novel cutinase from Coprinopsis cinerea by adsorptive bubble separation

Volatile metabolites produced by six fungal species compared with other indicators of fungal growth on cereal grains

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