Complexation of Cesium 137 by the Cap Pigments of the Bay Boletus (<i>Xerocomus badius</i>)

Aumann, D.C.; Clooth, Gabriele; Steffan, Bert; Steglich, Wölfgang

doi:10.1002/anie.198904531

Cited by 38 publications

(20 citation statements)

References 6 publications

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“…The accumulation of certain ions may be mediated by the chemical composition of specific pigments located in the caps of the basidiocarps of some boletoid Basidiomycetes (Aumann et al 1989). Ions of other elements (e.g.…”

Section: Resultsmentioning

confidence: 98%

Chemical elements in mushrooms: their potential taxonomic significance

Petrini

Cocchi²,

Vescovi³

et al. 2009

Mycol Progress

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One inherent problem in taxonomy is the choice of an internal or external reference. Phylogenetic studies routinely use outgroups, but classical taxonomy studies often lack internal or external controls. We suggest the establishment of internal references when dealing with large amounts of data that can be summarised by descriptive statistics. This study introduces the use of group centroids (i.e., "reference fungi") in taxonomy and describes the potential utility of chemical elements and methods of inorganic analytical chemistry in fungal taxonomy, using macromycete fruiting bodies as an example. Macromycetes are known to accumulate high levels of various chemical elements, in particular heavy metals. Their concentration is assumed to be species-specific, but substrate composition may also influence their presence in the mycelium and fruiting bodies. We have analysed the distribution of several chemical elements in a large sample of approximately 9,000 ascomycetous and basidiomycetous fruiting bodies, investigated in a study carried out during the last 20 years using univariate and multivariate methods. An internal control that we have called the "reference fungus" has been defined as the group average in univariate and group centroid in multivariate analyses. This has been useful to detect major deviations of selected samples from the mean values of the dataset. This methodology may be applied to any data, including morphological or ecological characters that can be summarised by descriptive statistics. The internal controls must be defined on a case-by-case basis.

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Section: Resultsmentioning

confidence: 98%

Chemical elements in mushrooms: their potential taxonomic significance

Petrini

Cocchi²,

Vescovi³

et al. 2009

Mycol Progress

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“…According to Molzahn et al [5] the enrichment of the superficial skin of the pileus with radiocesium relative to the rest of the fruit body in two samples of Xerocomus badius was 3.1 and 3.3. Chromatographic isolation of badione A and norbadione A from the brown pigment of the pileus skin of Xerocomus badius performed by Aumann et al [16] showed a 137 Cs enrichment factor (pigment/fruit body) of 87 ±10; for 40 K the enrichment factor was 138 + 18. This shows that cesium is bound by these substances analogously to other alkali metals.…”

Section: Resultsmentioning

confidence: 98%

Contamination of Mushrooms by Radiocesium in Bohemia during 1986-1990

Vobecký¹,

Těthal²

1993

Radiochimica Acta

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Temporal changes in contamination of mushrooms by the radionuclides 137 Cs and 134 Cs were studied in a locality in central Bohemia in 1986-1990. At the current contamination level no marked change in the isotopic ratio 137 Cs/ 134 Cs was recorded in the mushrooms or in upper substrate layers during the period under study. The samples exhibited an isotopic ratio 137 Cs/ 134 Cs of about 2. The distribution of radiocesium in the fruit body was observed to obey the pileus/stipes ratio of about 2.

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“…Norbadione A, which was isolated from the cap skin of Boletus badius, is biosynthetically derived from two molecules of xerocomic acid (4) via [4 + 2]cycloaddition (Winner et al 2004). The orange-brown pigment can complex K or Cs ions (Aumann et al 1989).…”

Section: Resultsmentioning

confidence: 99%

Secondary metabolites of Phlebopus species from Northern Thailand

et al. 2020

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Submerged cultures of the edible mushrooms Phlebopus portentosus and Phlebopus spongiosus were screened for their secondary metabolites by HPLC-UV/Vis and HR-LC-ESI-MS. Two new compounds, 9′-hydroxyphenyl pulvinone (1), containing an unusual pulvinone structure, and phlebopyron (2), together with the seven known pigments, atromentic acid (3), xerocomic acid (4), variegatic acid (5), methyl atromentate (6), methyl isoxerocomate (7), methyl variegatate (8), and variegatorubin (9) were isolated from the cultures. Their structures were assigned on the basis of extensive 1D/2D NMR spectroscopic analyses, as well as HR-ESI-MS, and HR-ESI-MS/MS measurements. Furthermore, the isolated compounds were evaluated for their antimicrobial and cytotoxic properties. 9′-hydroxyphenyl pulvinone (1), xerocomic acid (4), and methyl variegatate (8) exhibited weak to moderate cytotoxic activities against several tumor cell lines. The present paper provides a comprehensive characterization of pigments from the class of pulvinic acids that are present in the basidiomes of many edible bolete species.

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Complexation of Cesium 137 by the Cap Pigments of the Bay Boletus (Xerocomus badius)

Cited by 38 publications

References 6 publications

Chemical elements in mushrooms: their potential taxonomic significance

Chemical elements in mushrooms: their potential taxonomic significance

Contamination of Mushrooms by Radiocesium in Bohemia during 1986-1990

Secondary metabolites of Phlebopus species from Northern Thailand

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