Records on potentially endangered macrofungus (Buchwaldoboletus lignicola) in Indonesia
Ivan Permana Putra | Oktan Dwi Nurhayat | Mada Triandala Sibero | Rudy Hermawan
Buchwaldoboletus is a small genus of Boletaceae consisting of 13 species globally. Among the species, Buchwaldoboletus lignicola is considered vulnerable due to its habitat decline worldwide. This species has been recorded from 26 countries, but no information was previously found from Indonesia. During mushroom foraging in 2023 at Bogor (West Java, Indonesia), some fruiting bodies of golden yellow Boletaceae were collected, which were tentatively identified in the field as belonging to the genus Buchwaldoboletus. This study aimed to determine the taxonomic position of the specimens based on morphological and molecular evidence. Based on a combination of morphological and molecular data, the results confirmed the specimens as B. lignicola. Morphologically, the specimens were characterised by medium to large-sized basidiomata, a convex pileus ranging from brown to reddish brown, and light yellow to golden yellow pileal context, staining greenish on bruising. The pores were detachable and concolorous with the tubes, which were also detachable, decurrent, and yellow brown to golden brown, turning greenish over the pores when damaged. The basidiospores were elliptical to subfusiform. The BLAST result showed that the specimens exhibited a high similarity to B. lignicola from several countries, with top hits confirming this match. The ITS 1/2 rDNA phylogenetic tree placed Buchwaldoboletus BO24624 in the same clade as B. lignicola with a 100% BS value. This study reports the occurrence of B. lignicola for the first time in Indonesia. The results provide herbarium collection, as well as morphological and molecular data which could be used for future conservation assessments of B. lignicola.
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