Perilla frutescens (L.) is an edible plant, not only used as s food ingredient, but also in skin cream, soaps, and medicinal preparetions. ‘Atom-Ros’, a perilla (Perilla frutescenc (L.) Britt. cv. Chookyoupjaso was developed in 1995 by 200 Gy gamma irradiation-mutagenesis. This new cultivar has high rosmarinic acid content more than two fold compare with ‘Chookyoupjaso’ control. The observed phenotypical difference was changed leaf color of the ‘Atom-Ketone’ from violet to green. The yield potential of this cultivar (123.5 kg/10a) was 2.14 fold higher than that of ‘Chookyoupjaso’ (57.65 kg/10a). The methanol extracts of ‘Atom-Ros’ were tested for inhibition of nitric oxide (NO) production in lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophase cells. Atom-Ros showed significant inhibition of NO production. This rosmarinic acid extracted from ‘Atom-Ros’ has a good potential to be developed as an antioxidant agent.

Perilla frutescens (L.) is an annual herbaceous and ornamental plant in the Lamiaceae family. Perilla frutescens (L.) Britt.cv.Chookyoupjaso were irradiated using a 200 Gy gamma ray in 1995. By HPLC analysis, this new cultivar significantly induced isoegomaketone content compared with ‘Chookyoupjaso’ control. The phenotypical difference was the changed leaf color of the ‘Atom-Ketone’ from violet to green. The yield potential of this cultivar (106 kg/10a) was 1.83 folds higher than that of ‘Chookyoupjaso’ (57.65 kg/10a). The methanol extracts of ‘Atom-Ketone’ inhibit nitric oxide (NO) production in LPS-stimulated RAW 264.7 cells. This extract was further partitioned using ethyl acetate (EtOAc), butanol (BuOH), and water. The EtOAc fraction (EF-Atom-Ketone) was evaluated for antiinflammatory activities. These results indicated that the EF-Atom-Ketone reduced NO production by inhibiting inducible nitric oxide synthase (iNOS) expression. The EF-Atom-Ketone treatment also significantly diminished expression of MCP-1 and IL-6. Therefore, ‘Atom-Ketone’ reveals the potential therapeutic use of bioactive

This study was conducted to determine the optimal dose of gamma-ray for mutation breeding in sorghum (Sorghum bicolor M.). Gamma-rays irradiated to dry seeds with various doses (0 to 1000 Gy) at Korea Atomic Energy Research Institute. Lethal dosage (LD50) was approximately 256 Gy. Significant decreases in growth characteristics (plant height, tiller number and fresh weight) were observed by dose of increased over 300 Gy. Reduction doses (RD50) was approximately 363 Gy in plant height. We also conducted comet assay to observe nucleus DNA damage due to gamma irradiation. In comet assay, a clear difference was identified over 100 Gy treatments. With increasing doses of gamma-ray in the range of 100 to 400 Gy, the rate of head DNA was decreased significantly from 93.52% to 67.57%. The most of the Sorghum cells were severely damaged in the integrity of DNA by gamma-ray. These data provide valuable information when the optimal dose should be chosen for purpose of mutation breeding program of Sorghum.

In this study, the concentrations of isoflavones, anthocyanins and total phenol content (TPC) in 19 soybean mutant lines changed seed coat color from yellow to black or brown were determined. Among 19 soybean mutant lines, 5 soybean mutant lines with black pigment were detected 3 anthocyanins (delphinidin-3-O-β-D-glucoside, D3G; cyaniding 3-O-β -D-glucoside, C3G; petunidin 3-O-β-D-glucoside, Pt3G). The highest concentration of anthocyanins among 5 soybean mutant lines was D-16 (1280.0 ± 19.4 mg/100g seed coat) derived from cv. Danbaek. Although isoflavone contents of all soybean mutant lines showed lower levels compared to original cultivars, glycitein was detected only 5 soybean mutant lines (DP-37-2, DP-38, DP-39, DP-40, and DP-41 derived from cv. Daepung). In TPC of 19 soybean mutant lines, DP-10 was increase levels compared to original cultivar, while DP-37-2, DP-40, and DP-41 were decrease levels of TPC. Using reduction of DPPH, we measured the free radical scavenging activity (FRSA) among 19 soybean mutant lines. Five black and 4 brown soybean mutants showed significant increase in FRSA. On the basis of these results, it was concluded that gamma irradiation may change the isoflavone, anthocyanin, and total phenol contents of soybean. These mutant lines using in this study can be useful for the breeding of soybean varieties altering the nutritional values.

To evaluate peanut sprouts as a functional food material, the quality characteristics and antioxidant activities of soybean yoghurt with different percentages (0.5, 1.0, 2.0, and 3.0%) of peanut sprout powder (PSP) contents were investigated. The pH of soybean yogurt with PSP decreased in a time- and dose-dependent manner during fermentation, whereas the titratable acidity increased under the same conditions. The Hunter L value (lightness) decreased while the b value (yellowness) and a value (redness) increased as the PSP concentration in soybean yogurt increased. Prior to fermentation, the sugar content of the soybean yogurt increased as the PSP level increased, but the contents decreased as fermentation progressed. Meanwhile, the viscosity of the soybean yogurt increased during fermentation, and the lactic acid bacteria population was higher than that of the control. The sensory properties, including the flavor, color, taste, and overall acceptability, of the soybean yogurt containing 0.5 and 1% PSP, respectively, were higher than those of other tested yoghurts (with 0, 2.0, and 3.0% PSP contents). The antioxidant activity of the soybean yogurt significantly increased at the PSP concentrations of over 1.0%. These results suggest that the addition of PSP has beneficial effects on the quality and functionality of soybean yogurt, and that the addition of 1.0% PSP is the most suitable for manufacturing soybean yogurt.

The genus Allium which is one of the biggest plant genera comprises around 750 species that show the various morphological and ecological diversity with various taxonomic and geographical groups. The species of genus Allium has not been clearly distinguished because of extraordinary large amount of variation. We developed 8 simple sequence repeat markers (SSRs) which showed polymorphism within A. sativum accessions, but it was insufficient in transferability analysis of other Allium species. In this regard, we finally selected 50 primer pairs which was applicable to other Allium species adding to 8 primer pairs. According to results from application of 50 SSR markers to 9 Allium species, the average number of alleles ranged from 1.400 (A. porrum) to 1.889 (A. tuberrosum) and A. tuberosum (2n=32) has maximum 9 alleles. The lowest transferability value was 42.0% ( A. cepa and A. chinense) while A. sativum showed 96.7%. The A. porrum conceived to be close relationship to A. sativum as Allium subgenera revealed higher transferability (73%) rather than other Allium species. According to PCA analysis, three groups were divergent, and the A. fistulosum and A. sativum revealed the distinct groups and the rest 7 species formed another group.

The present study reports isolation and characterization of ten polymorphic SSR markers developed from common buckwheat (Fagopyrum esculentum Moench). These SSR markers produced a total of 59 alleles across 41 common buckwheat accessions with an average of 5.9 alleles per locus. Values for observed (HO) and expected (HE) heterozygosities ranged from 0.071 to 0.924 (mean=0.53) and from 0.073 to 0.902 (mean=0.412), respectively. At significance threshold (P<0.05), seven loci deviated from Hardy-Weinberg equilibrium (HWE), whereas significant linkage disequilibrium (LD) values were observed between 5 pairs of loci. These markers are currently being used for programming of the genetic conservation and classification of common buckwheat germplasm collection.

There are about 16 species included in Fagopyrum (Polygonaceae) genus and some of them have been found recently and named. Fagopyrum genus is generally divided into two major groups: cymosum and urophyllum group. This study is to analyze the genetic diversity of Fagopyrum genus, to compare with the phylogeny result of Fagopyrim using previous analysis results, and to provide the information of each species specific marker by executing the cross-amplification on 3 species and 2 sub-species among cymosum group and 5 species among urophyllum using 136 SSR markers newly developed from common buckwheat. Cluster analysis using UPGMA showed two main clusters, each of the cymosum and urophyllum group. This result agree well with the previous findings on species relationships in Fagopyrum using different method approachs. In cross species amplification, our results revealed significant transferability of F. esculentum microsatellites to the 4 cymosum species (96.3% in F. esculentum ssp. Ancestral, 61.0% in F. tataricum ssp. tataricum, 36.0% in F. tataricum ssp. potanini, 97.1% in F. homotropicum). However, the percentage of 136 SSR markers were amplified in the urophyllum species (50.7% in F. urophyllum, 50% in F. lineare, 60.3% in F. leptopodum, 66.9% in F. capillatum, 66.2% in F. gracilipes) was lower than cymosum species, except F. tataricum. In addition, we identified 61 species specific markers among each species. These results demonstrate wide potential applicabilityof these markers for the study of inter-specific genetic diversity as well as evolutionary relationships among cultivated and wild buckwheat.