Two New Species of Laccaria (Agaricales, Basidiomycota) from Korea

Abstract

Species of Laccaria (Hydnangiaceae, Agaricales, and Basidiomycota) are well-known ectomycorrhizal symbionts of a broad range of hosts. Laccaria species are characterized by brown, orange, or purple colored basidiocarps, and globose or oblong, echinulate and multinucleate basidiospores. While some Laccaria species are easily identified at the species level using only the morphological characteristics, others are hard to distinguish at the species level due to small differences in morphology. Heretofore, ten Laccaria species have been reported in Korea. While studying the fungal diversity in the National Parks of Korea, two new Laccaria species were discovered. Species identification was done based on molecular analyses (ITS, 28S rDNA, rpb2, and tef1), then were confirmed by their corresponding morphologies. The two newly discovered Laccaria species are proposed here as Laccaria macrobasidia and Laccaria griseolilacina. The unique morphological characters of L. macrobasidia that distinguish it from its closely related species are orange-brown colored basidiocarp, long basidia and the absence of cheilocystidia. L. griseolilacina is characterized by a light grayish lavender-colored pileus and the absence of cheilocystidia. Two new species are described and illustrated in the present paper.

Unveiling the Diversity of Hydnum in the Republic of Korea with One New Species, Hydnum paucispinum

“…Our results indicate that despite the distance between East Asia, the mountainous areas of Vietnam, and central Siberia, their Hydnum species share similar ecological traits. These findings support those of previous studies highlighting the differences between Asian ectomycorrhizal fungi and those in western regions, which are attributed to variations in continents and ecological environments [ 42–44 ]. Therefore, continued research on the fungal taxonomy in the eastern region provides an opportunity to further explore the diversity of fungi, which has only been partially revealed thus far [ 45 ].…”

Determination of Diversity, Distribution and Host Specificity of Korean Laccaria Using Four Approaches

“…Classically, information on the diversity and distribution of ECM fungi is based on a survey of fungal fruiting bodies [ 16 , 17 ]. We have previously confirmed 13 Laccaria species based on specimens collected from fruiting bodies [ 12 , 13 ]. However, this approach may only partially reflect fungal diversity because many species do not produce conspicuous fruiting bodies [ 18–22 ].…”

“…ohiensis . These species were recorded in Korea but were not found in specimens [ 12 , 13 ]. We were able to design a species-specific primer set only for L .…”

Laccaria murina and L. pumila from Pakistan, a study based on SEM and nrITS molecular marker

“…Then samples were examined in a scanning electron microscope (JSM5910‐JEOL, JAPAN) at 10,000× magnification. Basidiospore size and echinulae were measured using SEM (Cho et al, 2020).…”