Elemental and Cu–Zn isotopic compositions of two bolete mushrooms grown on contrasting substrates. (March 2023)

• Record Type: Journal Article
• Authors: Andronikov, Alexandre V.; Andronikova, Irina E.; Sebek, Ondrej; Martinkova, Eva; Stepanova, Marketa; Vitkova, Hyacinta; Antalova, Elena
• Is Part Of: Applied geochemistry. Volume 150(2023)
• Publication Date: 2023-03
• Subjects: Trace elements -- Non-traditional stable isotopes -- Bedrock -- Mushroom -- Fruiting body -- Substrate; Environmental geochemistry -- Periodicals; Water chemistry -- Periodicals; Geochemistry -- Social aspects -- Periodicals; Geochemistry -- Periodicals; 551.9
• DOI: 10.1016/j.apgeochem.2023.105594
• Languages: English
• ISSNs: 0883-2927

Abstract

Abstract: We studied elemental and Cu–Zn isotopic compositions of Boletus edulis and Xerocomus chrysenteron mushroom samples collected from three small catchments underlain by contrasting bedrock (leucogranite, amphibolite, and serpentinite). Elements such as Ag, P, K, Zn, S, Cd, and Rb are significantly enriched in the mushroom's fruiting bodies relative to the substrate. All analyzed elements are distributed unevenly within the fruiting bodies, with the cap and sporophore generally containing higher amounts of trace elements. Overall, the studied samples of the B. edulis more efficiently accumulate nutrients and minerals than the X. chrysenteron samples. Concentration of most trace elements in mushrooms is not site-dependent with the exception of Ca, Rb, Ti, Ba and Sr. Isotopic composition of mushrooms is characterized by higher uptake of heavier isotopes of Zn (Δ 66 Znstipe-soil = 0.48–0.77‰) for the both species, lighter isotopes of Cu (Δ 65 Custipe-soil = −0.73 to −1.52‰) for B. edulis, and heavier Cu isotopes (Δ 65 Custipe-soil = +0.37 to +0.43‰) for X. chrysenteron . The B. edulis samples are characterized by (δ 65 Custipe > δ 65 Cucap > δ 65 Cusporophore ) and (δ 66 Znstipe > δ 66 Zncap > δ 66 Znsporophore ) within-mushroom isotope distribution schemes, whereas the X. chrysenteron samples display different Cu (δ 65 Custipe < δ 65 Cucap > δ 65 Cusporophore ) and Zn (δ 66 Znstipe > δ 66 Zncap < δ 66 Znsporophore ) isotope distribution schemes. Changes in fungal isotopic signatures relative to the substrate and within the fruiting body suggest that both fungi species fractionate Cu and Zn isotopes with significantly pronounced differences between the species. Highlights: Elements accumulation was different for two Bolete mushroom species. Within-mushroom translocation of elements was similar for both mushroom species. Bolete mushrooms fractionate Cu and Zn isotopes at substrate to mushroom interface. Bolete mushrooms fractionate Cu and Zn isotopes within fruiting body.