Growth and uptake of caesium, rubidium, and potassium by ectomycorrhizal and saprotrophic fungi grown on either ammonium or nitrate as the N source

Influence of Ectomycorrhizal Colonization on Cesium Uptake by Pinus densiflora Seedlings

“…Some EM fungal species solubilize minerals derived from soil particles [9]. Additionally, A. hygrometricus biomass can accumulate Cs [6]. The ability of EM fungi to solubilize minerals fixed in soil particles and accumulate the minerals may be important for the bioaccumulation of Cs by plants.…”

“…An A. hygrometricus isolate (FFPRI 460507) [6] was obtained from a fruiting body collected from the evergreen oak forests in Kuma, Kumamoto Prefecture, Japan. These species appears under a variety of tree species, suggesting a wide host range and the strain used for the present study can form its ectomycorrhizae not only on oaks ( Quercus serrata and Q. phillyraeoides ) but on pine ( P. densiflora ) well in pot culture (data not shown).…”

“…Thus, EM fungi are considered to have important effects on radiocesium dynamics in forest ecosystems [4]. The ability of EM fungi to absorb Cs from the substrate has been investigated in studies [5,6] in which 137 Cs and stable Cs were used because of their similar chemical behaviors. This suggests that stable Cs may be useful for predicting radiocesium transport [7].…”

“…Astraeus hygrometricus , which forms an EM association and is common in Japan, Korea, and northeastern China [12], accumulates relatively large amounts of Cs, especially when NO 3 is provided as an N source in the medium [6]. In a preliminary study, we examined the accumulation of stable Cs in the shoot of Pinus densiflora colonized by A. hygrometricus , but the accumulation of potassium (K) in the plants was not examined [13].…”

Variation in the Microbiomes of the Basidiomycete FungiScleroderma citrinum(Pers.) andPisolithus arhizus(Pers.): a tale of two saprotrophs

“…The family has its origins in the Cretaceous, and is widely distributed globally being present in both tropical and temperate habitats (reviewed by Wilson et al 2012). Scleroderma citrinum, the focus of this study, is a fungal extremophile that can tolerate elevated temperatures and dry conditions and occupies habitats ranging from mine heaps, to geothermal soils, to Antarctic lakes, to ore roasting beds (e.g., Mrak et al 2017). Scleroderma strains can tolerate high levels of heavy metal contamination (e.g., Agganan et al 2015;Mleczko 2004), accumulate and concentrate toxic elements, notably Zn and S (e.g., Medve and Sayre 1994), and thrive in sites contaminated with high levels of Cu, Pb, Zn and Cd (e.g., Rudawska et al 2011;Silva et al 2013;Roccotiello et al 2015).…”