A NEW FINDING OF A RARE FUNGUS PISOLITHUS ARHIZUS (BOLETALES, BASIDIOMYCOTA) ON THE TERRITORY OF ODESA REGION

Problem. The distribution of species from the Red Book of Ukraine has been studied insufficiently. This also applies to the rare fungus Pisolithus arhizus (Scop.) Rauschert. Therefore, the discovery of new habitats of rare species is relevant. Aim. The aim of the work is to characterize the new locality of P. arhizus from Odesa region, found on September 12, 2021. Methods. The site was found during a survey of the coast of the Tyligul estuary by a route method. The determination of the fungus was carried out according to the Determinant of fungi of Ukraine. Results. A new locality of P. arhizus was discovered on the bank of the Tyligul estuary in the vicinity of the village of Liubopol, Lyman district, Odesa region. This finding complements the information on the mycobiota of the regional landscape park "Tyligulskyi" (Odesa region). One carpophore was found, the morphometric parameters of which were known in the literature. It is possible that Pisolithus arhizus is a symbiont of cultured Juniperus sabina L.

Distribution of Pisolithus arhizus (Boletales, Basidiomycota), a rare fungus in Ukraine

The generalized information on the distribution of Pisolithus arhizus (Sclerodermataceae, Boletales, Basidiomycota) in Ukraine is provided. Pisolithus arhizus is listed in the Red Data Book of Ukraine as a rare species reported only from Kharkiv, Kherson, Odesa, Poltava regions and the Autonomous Republic of Crimea. This article significantly expands our knowledge on distribution patterns of P. arhizus in Ukraine. New records from Donetsk, Ivano-Frankivsk, Mykolayiv, Zaporizhzhya, and Zhytomyr regions are added to those previously reported. Despite the increased number of the reports, this fungus is nevertheless considered to be a rare species in Ukraine; therefore, it is necessary to search for its new localities.

Effects of vitamins, temperature and pH on the biomass production by ectomycorrhizal fungi

Studies were carried out to determine the effect of vitamins, temperature and pH on the biomass production by ectomycorrhizal fungi: <i>Laccuria bicolor, Hebeloma crustuliniforme, Suillus bovinus</i> and <i>Pisolithus arhizus</i>. Responses of particular organisms were different Three-factor ANOVA which enables the comparison of the effect of experimental factors on biomass yield has shown that the pH of the medium had a stronger effect on <i>L. bicolor, H. crustuliniforme</i> and <i>S. bovinus</i> than vitamins. Temperature was the factor exerting the strongest effect on the growth of <i>P. tinctorius</i>.