3종의 초위성체 마커를 이용해 분석한 대립유전자형을 F0, F1 그리고 F2로 세대 간 구분 하여 동일한 개체 출현확률 값을 추정한 결과 F2의 무작위교배집단으로 가정한 경우 13종의 초위성체 마커는 3.84 × 10-23의 추정치를 나타내 37개의 SNP 마커를 이용할 경우와 유사한 동일개체 출현확률 추정치를 유추할 수 있었다. 본 연구에 사용한 실험축군은 2품종 상호교배로 만들어졌다. 친자감정확률 추정치를 전체집단을 대상으로 13종의 초위성체 마커와 37개의 SNP 마커를 이용하여 분석한 결과 부모를 동시에 찾을 수 있는 추정치인 PEpu의 경우 초위성체 마커는 0.97897이고 SNP 마커는 0.99149였으며, 한쪽 부모를 찾을 수 있는 추정치인 PE의 경우 초위성체 마커는 0.99916이고 SNP 마커는 0.99949로 나타났다. 또한 가능한 후보 부모들로부터 가장 확률이 높은 부모를 찾을 추정치인 PNEpp의 경우는 초위성체 마커와 SNP 마커 둘 다 1.00000으로 추정 되었다. 한정된 부모집단 내 한정된 대립유전자형을 통해 대량의 비육돈이 생산되는 국내의 양돈산업의 경우 DNA 마커의 특성, 분석집단의 크기, 유전자형 분석의 정확도와 비용, 분석된 자료 관리의 용이성 및 기존 분석 시스템과의 호환성 등을 고려하여 효율성과 경제성이 높은 마커를 선정해 마커 조합을 만드는 것이 필요할 것으로 사료된다.

Random amplified polymorphic DNA (RAPD) and fluorescent amplified fragment length polymorphism (FAFLP) analyses were executed on a total of 28 Salmonella spp., including 6 ATCC reference strains, 2 isolates from outbreaks of food poisoning in Gwangju, and 20 isolates from carcasses. For RAPD analysis, four primers, named P1254, 23L, OPA-4, OPB-17 were used producing amplification fragments ranged from 0.18kb to 2.6kb. As a result, 5 types using P1254, 5 types using 23L, 3 types using OPA-4, and 6 types using OPB-17 and a total of 18 RAPD types were achieved. For FAFLP analysis, bacterial genomic DNA was digested with endonucleases EcoRⅠ and MseⅠ, site-specific adaptors were ligated, and PCR amplification was carried out with an EcoR1 adaptor-specific primer labelled with fluorescent dye. Amplified fragments, which were separated on a polyacrylamide sequencing gel ranged from 35bp to 300bp were analysed. Results were displayed as a dendrogram with genetic distance. Twenty two Salmonella isolates and 6 reference strains were divided into 14 groups in a level of 0.136 genetic distance. In conclusion, Salmonella isolates of chicken carcasses have different genetic properties when compared to reference strains and isolates from outbreak of food poisoning.

Myopalladin (MYPN) is an important expression gene associated with regulation of Z-line structure in muscle and maintains sarcomeric integrity. In this study, we investigated the association between MYPN A1795G SNP (single nucleotide polymorphism) and carcass traits (LMA, longissimus muscle area; CW, carcass weight; BF, backfat thickness; MS, marbling score) in Korean cattle. The MYPN A1795G SNP was genotyped in 212 steers and analyzed the associations with carcass traits by PCR-RFLP (Restriction fragment length polymorphism) method. The allele frequencies were 0.566 for G allele and 0.434 for A allele. And the genotype frequencies of GG, GA, and AA genotype were 32.1%, 49%, and 18.9%, respectively. Association analysis indicated that the A1795G SNP of MYPN gene showed a significant association with LMA (p<0.05). The steers with GG genotype had higher LMA than those with the genotypes AA. But no significant associations were observed in other carcass traits (CW, BF, MS). The steers with the GG genotype showed higher CW and BF than those with the genotypes AA and GA. These results suggest that the A1795G SNP of the MYPN gene is associated with LMA and may be useful for candidate marker-assisted selection to increase the levels of LMA in Korean cattle.

This study was conducted to detect the specific fragment genes by using RAPD-PCR and RFLP method in the Korean Tiger cattle and Korean Native cow. And then, the specific fragment gene was investigated by the analysis of the genes for detection significance according to the expressing pattern. We found the specific expression gene by the RAPD-PCR analysis in Korean Tiger cattle. It were a detected the differences of the species in the colour and external section. The Korean Tiger cattle were vary low compare to the Korean Native cattle by analysis result of polymorphism and distribution. And the polymorphism over 500bp into the size classification detected was highly pattern and it could be utilize by the resource of the specific gene. There was a found the specific gene by sequencing in the 1855bp gene fragment of Korean Tiger cattle. And the sequencing result of the R9B was different between Korean Native cow and Holstein cattle. Thus, this gene can be apply as the specific gene in the Korean Tiger cattle.

Vollenhovia emeryi chosenica (Wheeler) (Hymenoptera: Myrmicinae) is an ant species frequently found in forests. In nature, two phenotypically distinct forms are found e.g. long winged and short winged. Unlike other hymenopteran insects, the ant is unique in its mode of reproduction. In this species, queens are clonally reproduced from unfertilized eggs. On the other hand, workers develop from fertilized eggs. Strikingly, haploid males are reproduced from fertilized eggs after destroying the maternal half of the genome e.g. maternal genome loss (MGL) consequently only with the paternal half of the genome. We collected the ant colonies nationwide in 2011. In this study, we demonstrate that the ant is infected with Wolbachia, the bacterial reproductive manipulator in various insects. Interestingly, only the long winged morphs seem to be infected. Furthermore, most colonies are mulitple-infected except two colonies collected from Chuncheon and Mt. Deogyu. We will discuss potential interactions among the Wolbachia infection polymorphism and wing morphology, and evolution of clonal reproduction and MGL.

The objective of this study was to find out candidate genes associated with litter size trait in pigs of inbred Large Yorkshire and Landrace populations. 86 sows were screened for candidate genotypes along with litter size data recordings. Association of litter size with genotypes of candidate genes were investigated to verify the usefulness of each gene's genotypes as markers for the trait. For the lines of Large Yorkshire, PRLR3 and RBP4 genes were genotyped. Frequency distribution of PRLR3 with genotypes AA, AB and BB were each 0.14, 0.44 and 0.42. And the average litter size by PRLR3 genotypes were 8.83, 10.81 and 10.70 piglets per litter, the average estimated breeding values of which were 0.243, 0.332, 0.365, respectively for AA, AB and BB genotypes. Genotypic frequencies of RBP4 by AA, AB and BB genotypes were 0.10, 0.44 and 0.46. The average litter size by genotypes of RBP4 were 10.40, 10.57 and 10.35 piglets per litter and their corresponding average estimated breeding values were 0.451, 0.353 and 0.261, respectively for genotypes AA, AB and BB. Significance in differences among genotypes were not observed, but B allele of RBP4 seems to be associated with litter size. In Landrace lines, frequencies of RBP4 genotypes, AA, AB and BB were 0.29, 0.55 and 0.16. And the average litter size of these genotypes were 10.50, 11.08 and 11.00 piglets per litter. The corresponding averages of estimated breeding values of each genotypes were 0.172, 0.135 and 0.104. In Landrace lines, allele A was more likely to be associated with litter size, even if differences among average litter size were not significant. We conclude that genotyping of two candidate genes is a helpful tool to identify genetic potentials of litter size in pigs.

The purpose of this study was to investigate the body composition, biochemical parameters, and consumption of convenience foods according to β-3 adrenergic receptor polymorphism in university students. A survey was conducted on a total of 486 students - 189 males and 297 females. Based on a self-reporting method, questionnaires were administered for over 20 minutes, and β-3 adrenergic receptor and blood samples were also analyzed. The genotype frequencies of β-3 adrenergic receptor polymorphism were Trp/Trp homozygote (73.0%) and Trp/Arg heterozygote (27.0%) in male students. For the female students, the distribution of genotypes was Trp/Trp (71.0%) and Trp/Arg (29.0%). There were no differences according to biochemical parameters (ALT, cholesterol, triglyceride, HDL-cholesterol, LDL-cholesterol, and hemoglobin) or body composition. Males with TT genotype frequently ate Ramyon (2.40±0.52), Cup Ramyon (2.37±0.39), Kimchi (2.23±0.61), and frozen meat (2.00±0.44), whereas males with TA genotype ate Fries (frozen food) (1.90±0.79), Smoked meat (1.67±0.81), and Canned fruit (1.64±0.81). Females with TT genotype frequently ate Frozen fries (2.21±0.35), Kimbab (2.12±0.44), and Ramyon (1.85±0.40), whereas females with TA genotype frequently ate Kimchi (1.73±0.98), Fries (frozen food) (1.46±0.26), and Cup Ramyon (1.30±0.34). When questioned about satisfaction about body shape, 22.8 and 60.8% of those with TT genotype answered that they were 'satisfied' or needed to 'lose weight', respectively, whereas 18.0 and 63.9% of those with TA genotype answered that they were 'satisfied' or needed to 'lose weight', respectively. In conclusion, this study found no significant effects in terms of β-3 adrenergic receptor polymorphism, which suggests that health-promoting education needs to be developed so that university students appropriately recognize their bodies and control their weight in desirable ways. Therefore, it is necessary to educate individuals with TT genotype how to buy reasonable foods by understanding the interrelationship between convenience foods and health care and by checking the nutrition index labels on convenience foods. Thus, it is recommended that a health-promoting program be developed for the promotion of healthy lifestyles.

[Aims] Lentinula edodes (Berk.) Pegler has many commercial strains both morphologically and physiologically similar to each other. At present, detection of polymorphism in rDNA-IGS region (Babasaki, 2006) and/or RAPD marker (Zhang and Molina, 1995) is generally used for strain typing of L. edodes. However, it is rather time-and-cost consuming. Inter-retrotransposon amplified polymorphism (IRAP)-PCR method mainly used for horticultural crops takes less time and lower in cost in strain typing (Kalendar et al, 1999). In this study, we designed IRAP primers for L. edodes and verified their strain typing efficiency. [Method] Thirty three strains were provided for this study. Either fungal cultures on PDA or fungal tissues of fruit bodies were cut into approximately 4 x 4 x 4 mm. Total DNA of each samples were extracted by DNeasy Plant Mini Kit (QIAGEN). For PCR, IRAP primer set and Pfu-X polymerase (greiner) were performed. Based on LTR (Long Terminal Repeat) sequence in L. edodes, we designed one set of primers amplifying the regions between retrotransposons. Ampricons were electrophored for 50 min at 100 V on 1.7 % agarose gel with GelRed (Biotium) and evaluated under UV irradiation. [Results] The products obtained by IRAP-PCR were determined using mini-gel electrophoresis system. The band patterns of IRAP-PCR products differ among strains except the ones having the same parental cultivar. The detected bands were bright and clear without smearing. The IRAP-PCR products of fungal cultures on PDA and correlating fungal tissues of fruit bodies showed the same band pattern, suggesting that the procedure is highly reproducible. Thus, it is considered that IRAP-PCR with short ranged (ca. 1 kb) electrophoresis is a time-efficient and practical strain typing method of L. edodes.

The relationship of several candidate genes polymorphisms with breeding values of economic traits were investigated in Korean Native Pigs. Record (2001-2006) of 546 Korean native pigs were obtained from National Institute of Animal Science, Korea having data on average daily gain (ADG), age at 70 kg (D70 kg) and backfat thickness (BF). The data's obtained were analyzed by the DF-REML (Derivative-Free Restricted Maximum Likelihood) program of Boldman using a single-trait animal model to analyse the genetic parameters. The analysis of restriction fragment length polymorphism (RFLP) was conducted on 68 Korean native pigs (KNP) using single nucleotide polymorphism (SNP). Different genotype frequencies of 5 candidate genes such as MC4R, PRKAG3, FABP3, ESR and PRLR3 were observed in KNP. Significant relationship of AA and AB genotype between MC4R polymorphic site and breeding value for average daily gain (ADG, p<0.05) was observed. PRKAG3 polymorphic sites were also found to be significantly related to breeding values for ADG, AA, AB genotype (p<0.05) and also, for Backfat thickness (BF), days to 70 kg and BB genotype (p<0.05). In conclusion, selection method would be more effective if it encompasses significant genotype for performance traits and that would further aid in the selection of seed stock in KNP.

This study aims to identify DNA marker related to health index which is derived from fatty acid composition of Hanwoo meat. We investigated a genetic association between two SNPs (-867G>C and 878C>T) of SCD gene and health indexes. Two health index values (index of atherogenicity and index of thrombogenicity) were derived from a combination of fatty acid composition. Phenotypic correlation indicated that oleic acid (C18:1) was negatively correlated to index of atherogenicity (-0.84) and index of thrombogenicity (-0.91), respectively. Statistical analysis revealed that 878T>C SNP was significantly associated with IA (index of atherogenicity, p=0.012) and IT (index of thrombogenicity, p=0.006). There was no association between the regulatory SNPs (-867G>C and -877Gdel) and health indexes. Haplotype analysis detected 4 main haplotype (GdelT; 0.004, GdelC; 0.344, CGT; 0.350 and CGC; 0.261) in Hanwoo. The GdelT haplotype was significant on IA and IT. The effect of GdelT haplotype showed increasing IA and IT values, while GdelC haplotype has a decreasing IA and IT value in Hanwoo. In conclusion, the 878C>T SNP in the SCD gene seems to have an effect on this health index and might be implemented into animal breeding program.

The diamondback moth, Plutella xylostella, is one of the most important pests of cole crops in the world and is the first insect to evolve resistance to Bt toxins in open-field populations. To search for useful molecular markers for Bt reistance monitoring, the PCR-based restriction fragment length polymorphism (RFLP) profiles of three aminopeptidase N (PxAPN1, PxAPN2 and PxAPN4) were determined for 15 representative regional field populations of P. xylostella. Most regional samples had similar RFLP patterns, whereas PxAPN1 from four regions and PxAPN4 from two regions showed different banding patterns after restriction enzyme treatment, but no differences were found in PxAPN2 among populations. The DNA sequence analysis revealed that a point mutation at the restriction site was responsible for the polymorphism of PxAPN1 but no mutations were observed in PxAPN4. Comparing amino acid sequences of PxAPNs from regional populations with reference PxAPNs (GenBank accession no. AAB70755) revealed that four regional populations possessed a point mutation in the Cry1A binding site of PxAPN1 and five regional populations possessed a deletion of eight amino acids in PxAPN4. These RFLP patterns were consistently observed in Southern regions of Korea, including Kyungsangnam-Do and Jeju-Do. The functional association of these RFLP with Bt resistance is currently under investigation

This study aimed to research meal quality and the dietary behaviors of college students for desirable dietary lives and provides basic data for nutritional education by examining polymorphism distribution of the UCP2 gene according to gender, by investigating attitudes in terms of their dietary habits and dietary lives, and by analyzing serum lipid levels and body composition. A survey was conducted with a total of 222 students - 93 male and 129 females. Based on a selfreporting method, the questionnaires were answered over 20 minutes, and UCP2 insertion/deletion gene polymorphism and blood samples were also analyzed. The results showed that the male students and female students had average BMI of 22.50 and 20.73 kg/m2, respectively. According to answers regarding their dietary lives, 51.4% of the students showed 'irregular eating' patterns, which is regarded as something to be corrected. In terms of eating regularity, 51.6% of the male students and 59.7% of the female students had irregular meal schedules. As the most important meal of a day, 64.0% of the students answered 'breakfast' but only 53.6% answered that they ate breakfast everyday. In addition, 39.8% of the male students and 50.4% of the female students ate between meals 'once a day'. When questioned if they were satisfied with their body shape, 17.8 and 45.2% of the male students answered they were 'satisfied' or needed to 'gain weight', respectively, whereas 17.8 and 77.5% of the female students answered they were 'satisfied' or needed to 'lose weight', respectively. The results of the UCP2 gene polymorphism analysis showed that 33.7% of the males belonged to the DI heterozygote group, 64.2% belonged to the DD homozygote group, and 2.1% belonged to the II homozygote group. For the female students, 63.4% belonged to the DI heterozygote group, 35.1% belonged to the DD homozygote group, and 1.5% belonged to the II homozygote group. According to the blood and serum lipid analyses, the male students showed average HDL-cholesterol, LDL-cholesterol, and hemoglobin levels of 57.20, 93.80, and 15.00 mg/dL, respectively, while the female students presented average levels of 56.69, 102.88, and 13.13 mg/dL, respectively. In conclusion, this study found no significant effects in terms of UCP2 gene polymorphisms, but it is suggested that practical plans must be designed that allow college students to use nutritional knowledge in their daily lives, and in particular, nutrition education needs to be develop that would enable female college students to recognize their bodies appropriately and to control their weight in desirable ways.

This research aimed to compare the detection methods of Anisakis simplex in Sea fish by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) and macroscopic inspection. We examined 18 Trichiurus lepturus, 11 Scomber japonicus, and 65 Todarodes pacificus collected from the retail markets in the areas of Uljin, Kyuonggi province and Seoul. As the result of examinations, we found that detection rate of Anisakis simplex by macroscopic observation was 89% in Trichiurus lepturus, 90.9% in Scomber japonicus, 32.3% in Todarodes pacificus. The detection rate of Anisakis simplex by PCR-RFLP was 77.7% in Trichiurus lepturus, 81.8% in Scomber japonicus, 26.1% in Todarodes pacificus. We could conclude that PCR-RFLP method of Anisakis simplex was more specific rather than macroscopic observation.

This study was carried out to compare UCP2 polymorphism, dietary habits, and obesity index in normal and obese university students. The survey was carried out using self-questionnaires collected from the 126 normal and 60 obese university students. The results are summarized as follows. Breakfast was skipped in 43.7% of normal and 49.3% of obesity students and it appeared obese students eat faster than normal students. The percentage of weight control experience were 49.2 and 71.0 in the normal and obese students, respectively. Blood levels of lipid profiles(triglyceride, LDL cholesterol, and HDL cholesterol), hemoglobin, AST and ALT were anaylzed. In UCP2 genes, the frequency of deletion homozygote(DD) was 71.5%, heterozygote(DI) was 26.9% and insertion homozygote(II) was 1.6%. Plasma levels of triglyceride, total cholesterol, LDL cholesterol, and HDL cholesterol of normal students were 79.06, 172.25, 100.86 and 57.03 mg/dl, and those of obese students were 93.06, 173.22, 101.22 and 54.39 mg/dl, respectively. Blood parameters were in normal range in both group. Plasma triglyceride, total cholesterol and LDL cholesterol levels of obese students were higher than those of normal students. On the other hand, plasma HDL cholesterol levels of obese students were lower than those of normal students. Plasma levels of AST and ALT were in normal range in both group. However, AST and ALT levels of obese students were higher than that of normal students. Thus, it was recommended for them to have a nutritional education program to improve their dietary and living habits for obese students’health. Nutritional education program should also be organized practically and systematically.

본 연구는 후보 유전자의 경제형질에 미치는 염기 변이 효과를 검증하기 위해 국내에서 사육된 듀록 품종 96두와 한국 재래 돼지 86두를 활용하였다. 검증에 활용된 4개의 후보 유전자는 MC4R, PA-KAG3, FABP3 그리고 ESR 유전자였다. 각 후보 유전자들의 유전자형 분석 결과 두 집단 간에 유전적 특성의 차이가 분명히 나타나고 있음을 확인하였다. MC4R 유전자의 A 대립 유전자는 두 집단 모두에서 성장 형질과의 유의한 연관성이 검출되었고,

Aldehyde dehydrogenase (ALDH) plays an important role in alcohol metabolism; ALDH is responsible for the oxidation of acetaldehyde generated during alcohol oxidation. ALDH is also known to oxidize various other endogenous and exogenous aldehydes. Cytochrome P-450 2E1 (CYP2E1), a liver microsomal enzyme, also metabolizes acetaldehyde and ethanol and can be induced by other inducers including acetone and ethanol. We examined single nucleotide polymorphisms (SNP) of ALDH and CYP2E1 genotypes in Korean. Restriction fragment length polymorphism (RFLP) method was used to determine ALDH and CYP2E1 SNP. Mutation in ALDH was 60% (heterozygote 46.7% and homozygote 13.3%) among 15 cases. CYP2E1 mutation was 52.7% (heterozygote 47.4% and homozygote 5.3%) among 19 cases.

The primary cause of periodontitis is plaque-associated anaerobic gram-negative bacteria. As shown in the patients with defects in the number or function of neutrophils, innate immunity plays an important role in resistance to bacterial infection and periodontitis. Toll-like receptor 4(TLR4) is one of the key receptors that recognize the molecular patterns of microbes and initiate innate immune response. To understand the role of TLR4 in the pathogenesis of periodontitis, we investigated whether Asp299Gly of TLR4 mutation is associated with periodontitis in Korean population. Subjects for this study included 90 healthy subjects and 98 periodontitis patients. The Asp299Gly mutation was screened by PCR-Restriction Fragment Length Polymorphism(RFLP) of genomic DNA from blood cells using a primer that creates a NcoI restriction site only in the mutant allele. The Asp299Gly mutation was not found in all subjects tested. Our results suggest that the Asp299Gly mutation of TLR4 is very rare in a Korean population. Further mutation screening may be required to determine the role of TLR4 in the pathogenesis of periodontitis.