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Jung-Ok Kong,Sang-Myung Lee,Yil-Seong Moon,Sang-Gil Lee,Young-Joon Ahn 한국응용곤충학회 2006 Journal of Asia-Pacific Entomology Vol.9 No.2
The nematicidal activity and poisoning symptoms of 88 plant essential oils against Bursaphelenchus xylophilus were examined by an immersion bioassay. Results were compared with those of three trunk-injection nematicides: fenitrithion, levamisol hydrochloride, and morantel tartrate. As judged by 24 h LC50 values, cinnamon bark oil (0.12 mg/ml) was the most effective nematicide, followed by coriander herb oil (0.14 mg/ml). Potent nematicidal activity was also observed with lemongrass, oregano, thyme red, and clove bud oils (LC50, 0.57-0.88 mg/ ml). Fenitrothion was ineffective (LC50, >10 mg/ml). In typical poisoning symptoms in B. xylophilus, these essential oils exerted rapid nematicidal action and the nematodes killed usually showed an extended shape, whereas levamisole hydrochloride and morantel tartrate usually exhibited semicircular and coiling shapes, respectively. The essential oils described merit further study as botanical nematicides for the control of pine wilt disease caused by B. xylophilus.
Jung, Ji-Young,Choi, Myung-Suk,Kim, Ji-Su,Jeong, Mi-Jin,Kim, Young-Wun,Woon, Byeng-Tae,Yeo, Jin-Ki,Shin, Han-Na,Goo, Young-Bon,Ryu, Keun-Ok,Karigar, Chandrakant S.,Yang, Jae-Kyung Korean Society of Forest Science 2010 한국산림과학회지 Vol.99 No.5
Enzymatic hydrolysate from non pre-treated biomass of yellow poplar (Liriodendron tulipifera) was prepared and used as resource for bioethanol production. Fresh branch (1 year old) of yellow poplar biomass was found to be a good resource for achieving high saccharification yields and bioethanol production. Chemical composition of yellow poplar varied significantly depending upon age of tree. Cellulose content in fresh branch and log (12 years old) of yellow poplar was 44.7 and 46.7% respectively. Enzymatic hydrolysis of raw biomass was carried out with commercial enzymes. Fresh branch of yellow poplar hydrolyzed more easily than log of yellow poplar tree. After 72 h of enzyme treatment the glucose concentration from Fresh branch of yellow poplar was 1.46 g/L and for the same treatment period log of yellow poplar produced 1.23 g/L of glucose. Saccharomyces cerevisiae KCTC 7296 fermented the enzyme hydrolysate to ethanol, however ethanol production was similar (~1.4 g/L) from both fresh branch and log yellow poplar hydrolysates after 96 h.
Myung Soo Park,Se Ra Jung,Myoung Sook Lee,Kyoung Ok Kim,Jin Ok Do,이강현,김승범,배경숙 한국미생물학회 2005 The journal of microbiology Vol.43 No.3
Little is known about the bacterial communities associated with the plants inhabiting sand dune ecosystems. In this study, the bacterial populations associated with two major sand dune plant species, Calystegia soldanella (beach morning glory) and Elymus mollis (wild rye), growing along the costal areas in Tae-An, Chungnam Province, were analyzed using a culture-dependent approach. A total of 212 bacteria were isolated from the root and rhizosphere samples of the two plants, and subjected to further analysis. Based on the analysis of the 16S rDNA sequences, all the bacterial isolates were classified into six major phyla of the domain Bacteria. Significant differences were observed between the two plant species, and also between the rhizospheric and root endophytic communities. The isolates from the rhizosphere of the two plant species were assigned to 27 different established genera, and the root endophytic bacteria were assigned to 21. Members of the phylum Gammaproteobacteria, notably the Pseudomonas species, comprised the majority of both the rhizospheric and endophytic bacteria, followed by members of Bacteroidetes and Firmicutes in the rhizosphere and Alphaproteobacteria and Bacteroidetes in the root. A number of isolates were recognized as potentially novel bacterial taxa. Fifteen out of 27 bacterial genera were commonly found in the rhizosphere of both plants, which was comparable to 3 out of 21 common genera in the root, implying the host specificity for endophytic populations. This study of the diversity of culturable rhizospheric and endophytic bacteria has provided the basis for further investigation aimed at the selection of microbes for the facilitation of plant growth.
Primary Angiomyolipoma of the Pelvic Region
Ok Ran Shin,Yun Seok Jung,Myung Sun Choi,Chang Hee Han,Sung Hak Kang,Yong Seok Lee 대한비뇨기종양학회 2010 대한비뇨기종양학회지 Vol.8 No.3
Angiomyolipoma (AML) is a benign tumor that is composed of adipose tissue, blood vessels and smooth muscle. The kidney is the most commonly affected organ. The incidence of AML is about 0.3-3% in the general population. AML is sometimes associated with tuberous sclerosis. Although rare, extrarenal AML has been reported to occur in other organs such as the liver, heart & mediastinum, spermatic cord, vaginal wall, and oral cavity. Primary AML in the pelvic region has very rarely been reported in the literature. Moreover, AML containing calcification is even rarer. A 61-year-old man was admitted to our hospital with a mass in the lower abdomen for 3 months. Open surgical excision was performed and the histopathological examination revealed AML. A one year postoperative follow-up showed no remarkable findings.
Jung, Hye Su,Yoon, Jung-Hoon,Joh, Kiseong,Seong, Chi-Nam,Kim, Won-Yong,Im, Wan-Taek,Kim, Myung-Kyum,Cha, Chang-Jun,Kim, Seung-Bum,Jeon, Che-Ok The National Institute of Biological Resources 2021 Journal of species research Vol.10 No.1
During a comprehensive investigation of indigenous prokaryotic species in Korea, 25 and 10 bacterial strains assigned to the classes Alphaproteobacteria and Betaproteobacteria, respectively, were isolated from diverse environmental habitats, including soil, mud, tidal field, sea water, sand, rusted iron, and leaf. Based on their high 16S rRNA gene sequence similarities (>98.7%) and the formation of robust phylogenetic clades with type species, each strain was assigned to an independent and predefined bacterial species. Since there were no published or official reports regarding these 35 isolates in Korea, they - 25 species of 14 families in the 5 orders of Alphaproteobacteria and 10 species of 3 families in the two orders of Betaproteobacteria - have been reported as unrecorded species in Korea. In addition, Gram reaction, colony and cell morphology, basic biochemical characteristic, isolation source, and strain ID of each species are also described in the species description sections.