Publications by authors named "Chang-Duck Koo"

is one of the most important edible, medicinal, and phytopathogenic basidiomycetes. The complete mitochondrial genome of this species was determined using next-generation sequencing technology. This mitogenome is a circular molecule of 93,439 bp with a GC content of 29.

View Article and Find Full Text PDF

Sixteen genomic DNA simple sequence repeat (SSR) markers of were developed from 205 SSR motifs present in 46.1-Mb long genome sequences. The number of alleles ranged from 3-14 and the major allele frequency was distributed from 0.

View Article and Find Full Text PDF

The shiitake mushroom () is one of the most popular edible mushrooms in the world and has attracted attention for its value in medicinal and pharmacological uses. With recent advanced research and techniques, the agricultural cultivation of the shiitake mushroom has been greatly increased, especially in East Asia. Additionally, demand for the development of new cultivars with good agricultural traits has been greatly enhanced, but the development processes are complicated and more challenging than for other edible mushrooms.

View Article and Find Full Text PDF

The genets of Suillus granulatus in a Pinus strobus stand (13 m × 60 m) were identified using random amplified polymorphic DNA molecular markers and the DNA of mushrooms that fruited for two years, and variations in genet size and distribution were analyzed. From a total of 116 mushrooms, 73 genets were identified and were grouped into three locations. The genets of mushrooms in close proximity differed from each other.

View Article and Find Full Text PDF

Lentinula edodes, the popular shiitake mushroom, is one of the most important cultivated edible mushrooms. It is used as a food and for medicinal purposes. Here, we present the 46.

View Article and Find Full Text PDF

The effects of aeration through lid filters on the hyphal growth of Lentinula edodes (oak mushroom) in sawdust cultivation bags were investigated. The aeration treatment levels were traditional 27 mm hole cotton plugs, cotton balls and combinations of seven hole sizes × two hole positions (up and under) in the lids covering plastic bags containing 1.4 kg sawdust medium at 63% moisture that had been autoclaved for one hour and inoculated with sawdust spawn of L.

View Article and Find Full Text PDF

The purpose of this study is to understand spatio-temporal changes of active fungal biomass and water in Tricholoma matsutake soil colonies during the mushroom fruiting season. The active fungal biomass was estimated by analyzing ergosterol content at four different points within four replicated locations in a single circular T. matsutake colony at Ssanggok valley in the Sogri Mt.

View Article and Find Full Text PDF

Minimal growth inhibitory concentrations (MICs) of chitosan acetate (M.W. 60 kDa) on heterotrophic bacteria (strains MK1, S, and R) isolated from the soft-rotten tissues of Neungee mushroom (Sarcodon aspratus) were measured.

View Article and Find Full Text PDF

This study was conducted to understand how osmotic potentials in Lentinula edodes tissues are related to water contents and how they change while a mushroom matures. Water content and osmotic potential of L. edodes mushroom tissues from log cultivation and sawdust cultivation were measured and the relationships were analyzed.

View Article and Find Full Text PDF

As the first step in an investigation of the problem with quality deterioration seen in the Neungee mushroom (Sarcodon aspratus) due to bacterial overgrowth during its storage, an attempt to isolate bacterial strains was made using infected gills of Sarcodon aspratus. Five bacterial strains were isolated; one phototrophic cyanobacterial species and four heterotrophic Gram negative rods. The four heterotrophic bacterial isolates (strains P, S, R, and MK1) were subjected to identification based on biochemical characteristics using the Biolog system, cellular fatty acid analysis using the MIDI system, cytology by scanning microscopy, and 16s rDNA sequence analysis.

View Article and Find Full Text PDF