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Wood Decay Fungi in South Korea: Polypores from Seoul
Jang, Yeongseon,Jang, Seokyoon,Lee, Jaejung,Lee, Hwanhwi,Lee, Hanbyul,Lee, Young Min,Hong, Joo-Hyun,Min, Mihee,Lim, Young Woon,Kim, Changmu,Kim, Jae-Jin The Korean Society of Mycology 2014 Mycobiology Vol.42 No.2
In Seoul, a majority of plant communities have undergone significant changes over the last few decades; however, how wood decay fungi have responded and adapted to the changes in vegetation remains unknown. Through an ongoing investigation of Korean indigenous fungi, ca. 300 specimens with poroid basidiocarp were collected in Seoul during 2008~2012. Morphological examination and molecular analysis using the internal transcribed spacer and nuclear large subunit ribosomal DNA region sequences helped identify 38 species belonging to 28 genera, 10 families, and 5 orders in this area. Among them, three polypores, Abundisporus pubertatis, Coriolopsis strumosa, and Perenniporia maackiae were found to be new to South Korea.
New Records of Two Agarics: Galerina sideroides and Gymnopus luxurians in South Korea
Jang, Seokyoon,Jang, Yeongseon,Kim, Jae-Jin The Korean Society of Mycology 2015 韓國菌學會誌 Vol.43 No.2
Studies on the diversity of indigenous fungi were conducted in the central districts of South Korea from 2008 to 2013. During the studies, potentially unrecorded agarics were collected. All specimens collected in this study were examined morphologically and phylogenetic analysis was also performed. They were identified as Galerina sideroides and Gymnopus luxurians. These fungi have never been reported in South Korea. We report them here with detailed descriptions and figures.
( Yeongseon Jang ),( Yeun Sug Jeong ),( Rhim Ryoo ),( Kang-hyeon Ka ) 한국균학회 2021 韓國菌學會誌 Vol.49 No.4
The cultivation in sawdust media, mushroom productivity, and fruiting body characteristics of Lentinula edodes strains NIFoS 2778 and NIFoS 3363 were compared according to the inoculation conditions. The cultivation period was 5% shorter when liquid spawn was used. Fruiting bodies were induced after 113 days of incubation on media inoculated with liquid spawn, and the cultivation period was 119 days on media inoculated with solid spawn. Mushroom productivity of NIFoS 2778 was the highest (661.4 g) when 36 mL of liquid spawn was used. For NIFoS 3363, mushroom production was higher under liquid inoculation conditions when the same amount of liquid and solid spawns were used. The mushroom characteristics of the two strains were not significantly different, except for gill width and stipe diameter.
Jang, Yeongseon,Akgun, Bulent,Kim, Hosub,Satija, Sushil,Char, Kookheon American ChemicalSociety 2012 Macromolecules Vol.45 No.8
<P>We have designed the controlled release platforms basedon polyelectrolyte(PE) blend multilayer films to investigate the release mode and kineticsat the nanoscale level. The model blend multilayer films are composedof positively charged layers with weak polyelectrolytes (PEs) (linearpoly(ethylenimine), LPEI) and negatively charged blend layers withmixtures of strong (poly(sodium 4-styrenesulfonic acid), PSS) andweak (poly(methacrylic acid), PMAA) PEs. The blend multilayer films([LPEI/PSS:PMAA]<SUB><I>n</I></SUB>) with well-defined internalstructure were prepared by the spin-assisted layer-by-layer (LbL)deposition method. Release properties of the multilayer films weresystematically studied as a function of blend ratio by neutron reflectivity(NR), ellipsometer, AFM, FT-IR spectroscopy, and quartz crystal microbalancewith dissipation (QCM-D). Since PSS strong PEs serve as robust skeletonswithin the multilayer films independent of external pH variation,the burst disruption of pure weak PE multilayer films was dramaticallysuppressed, and the release kinetics could be accurately controlledby simply changing the PSS content within the blend films. These releaseproperties of blend multilayer films form the basis for designingthe controlled release of target active materials from surfaces.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/mamobx/2012/mamobx.2012.45.issue-8/ma3002615/production/images/medium/ma-2012-002615_0010.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/ma3002615'>ACS Electronic Supporting Info</A></P>
Jang, Yeongseon,Seo, Jooyeon,Akgun, Bulent,Satija, Sushil,Char, Kookheon American Chemical Society 2013 Macromolecules Vol.46 No.11
<P>We present the effect of molecular weight (MW) of polyelectrolytes (PEs) on the disintegration behavior of weak PE multilayer films consisting of linear poly(ethylene imine) (LPEI) and poly(methacrylic acid) (PMAA). The multilayer films prepared by the spin-assisted layer-by-layer deposition have well-ordered internal structures and also show the linear thickness growth behavior regardless of MWs of PMAA. The well-defined weak PE multilayer films were subject to disintegration into bulk solution when the electrostatic interactions between LPEI and PMAA layers were reduced by treatment at pH 2. However, we demonstrated the change in the disintegration mode and kinetics (i.e., from burst erosion to controlled surface erosion) as a function of MW of PMAA based on neutron reflectivity and quartz crystal microbalance with dissipation, revealing the correlation between the structural changes and the viscoelastic responses of the weak PE films upon pH treatment. Also, the unique swelling behavior as well as the significant increase in dissipation energy was monitored before the complete disintegration of the multilayer films containing high MW PMAA, which is believed to originate from their slow rearrangement kinetics within the film. We believe that the results shown in this study provide chain-level understanding as to the MW-dependence on pH-triggered disintegration mechanism of weak PE multilayer films.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/mamobx/2013/mamobx.2013.46.issue-11/ma4007736/production/images/medium/ma-2013-007736_0009.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/ma4007736'>ACS Electronic Supporting Info</A></P>
Diversity of Wood-Inhabiting Polyporoid and Corticioid Fungi in Odaesan National Park, Korea
( Yeongseon Jang ),( Seokyoon Jang ),( Jaejung Lee ),( Hanbyul Lee ),( Young Woon Lim ),( Changmu Kim ),( Jae-jin Kim ) 한국균학회 2016 Mycobiology Vol.44 No.4
Polyporoid and corticioid fungi are among the most important wood-decay fungi. Not only do they contribute to nutrient cycling by decomposing wood debris, but they are also valuable sources for natural products. Polyporoid and corticioid wood-inhabiting fungi were investigated in Odaesan National Park. Fruit bodies were collected and identified based on morphological and molecular analyses using 28S and internal transcribed spacer regions of DNA sequences. As a result, a total of 149 species, 69 genera, 22 families, and 11 orders were recognized. Half (74 species) of the species were polypores, and the other half (75 species) were corticioid fungi. Most of the species belonged to Polyporales (92 species) followed by Hymenochaetales (33 species) and Russulales (11 species). At the genus level, a high number of species was observed from Steccherinum, Hyphodontia, Phanerochaete, Postia, and Trametes. Concerning distribution, almost all the species could be found below 1,000 m, and only 20% of the species were observed from above 1,000 m. Stereum subtomentosum, Trametes versicolor, T. hirsuta, T. pubescens, Bjerkandera adusta, and Ganoderma applanatum had wide distribution areas. Deciduous wood was the preferred substrate for the collected species. Sixty-three species were new to this region, and 21 species were new to Korea, of which 17 species were described and illustrated.