• 한국작물학회지
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• 제58권4호
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• pp.331-335
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• 2013

Buckwheat sprout is used as vegetable, and also flour for making noodles, and so on. Currently, information about tissue culture in buckwheat is limited and restricted to micro-propagation. We carried out somatic embryogenesis and plant regeneration using hypocotyl segments as explant of the cultivated buckwheat species, Fagopyrum esculentum which differs from existing studies in the growth regulator combinations used. Maximum callus regeneration was induced on MS medium containing 2,4-dichlorophenoxyacetic acid (2,4-D) $2.0mg{\cdot}L^{-1}$, benzyladenine (BA) $1.0mg{\cdot}L^{-1}$ and 3% sucrose. Friable callus was transferred to solidified MS media containing BA ($1.0mg{\cdot}L^{-1}$) with various concentrations of 2,4-dichlorophenoxyacetic acid for the induction of embryogenesis. The optimum concentrations of growth regulators (for regeneration of plantlet) were indole-3-acetic acid ($2.0mg{\cdot}L^{-1}$), Kinetin ($1.0mg{\cdot}L^{-1}$), BA ($1.0mg{\cdot}L^{-1}$). Only 2,4-D did not show any significant effect on callus induction or embryogenesis. Regeneration of embryonic callus varied from 5% to 20%. Whole plants were obtained at high frequencies when the embryogenic calli with somatic embryos and organized shoot primordia were transferred to MS media with 3% sucrose. The main objective of this research was to develop an efficient protocol for plant regeneration for common buckwheat, and to apply in future for genetic transformation.

• 동의생리병리학회지
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• 제26권4호
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• pp.469-474
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• 2012

Fagopyrum esculentum(FE) is an important food crop and medicinal plant that is used to improve diabetes, obesity, hypertension, hypercholesterolemia and constipation in Korea, but the underlying mechanisms involved in its anti-allergic activity are not fully understood. We investigated the effects on the release of inflammatory mediator and proximal signal events in $Fc{\varepsilon}RI$-mediated RBL-2H3 cell activation. FE reduced antigen (DNP-HSA)-induced release of histamine, prostaglandin D2 (PGD2) and cysteinyl Leukotriene (cysLT) in IgE-sensitized RBL-2H3 cells. In addition, it inhibited antigen-induced HDC2 and COX-2 and 5-LO mRNA expression in IgE-sensitized RBL-2H3 cells. FE also suppressed antigen-induced $Fc{\varepsilon}RI{\beta}$ and $Fc{\varepsilon}RI{\gamma}$ subunit mRNA expression in these cells. To identify the mechanisms underpinning the inhibition of release of inflammatory mediators such as histamine and PGD2 and cysLT by FE, we examined the proximal signal events of intracellular FceRI signaling molecules. FE suppressed antigen-induced phosphorylation of Lyn, Syk, LAT, $PLC{\gamma}1$, PI3K, Akt and cPLA2. Collectively, the anti-allergic effects of FE in vitro suggest its possible therapeutic application to inflammatory allergic diseases, in which its inhibition of inflammatory mediator and FceRI-dependent signaling events in mast cells may be hugely beneficial.

• 한국자원식물학회지
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• 제24권6호
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• pp.702-711
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• 2011

Buckwheat (Fagopyrum esculentum Moench), one of the minor crops grown in Korea belonging to the Polygonaceae family, is an annual crop widely cultivated in Asia, Europe, and America and has a character of outcrossing and self-incompatibility. The objective of this study was to analyze the genetic variability, phylogenetic relationships and population structure of buckwheat landraces of Korea using SSR markers. Ten microsatellite markers have been detected from a total of 79 alleles among the 179 buckwheat accessions were collected from Korea. The number of allele per marker locus ($N_A$) ranged from 2 (GB-FE-001, GB-FE-043 and GB-FE-055) to 31 (GB-FE-035) with an average of 7.9 alleles. GB-FE-035 was the most polymorphic with the highest PIC value 0.93. Major allele frequencies ($M_{AF}$) for the 10 polymorphic loci varied from 0.12 to 0.97 with a mean allele frequency of 0.57. The expected heterozygosity ($H_E$) values ranged from 0.05 to 0.94 with an average of 0.53. The observed heterozygosity ($H_O$) ranged from 0.06 to 0.92 with an average of 0.42. The overall polymorphic information contents (PIC) values ranged from 0.05 to 0.93 with an average of 0.48. The landrace accessions of buckwheat used in the present study were not distinctly grouped according to geographic distribution. The study concludes that the results revealed genetic differentiation was low according to the geographic region because of outcrossing and self-incompatibility. We reported that our analyses on the genetic diversity of common buckwheat cultivars of Korea were performed by using of microsatellite markers.

• 한방안이비인후피부과학회지
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• 제25권3호
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• pp.1-12
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• 2012

Objectives : Fagopyrum esculentum(FE) has been used for removal of inflammation of internal organs and treatment of sore and ulcer by heat toxin in Korean herbal medicines. In this study, To investigated the protective effect of FE on allergic response, we determined whether FE inhibits allergic response. Methods : The effect of FE was analyzed by ELISA, RT-PCR and Western blot in RBL-2H3 cells. We investigated cell viability, ${\beta}$-hexosaminidase, as a marker of degranulation, cytokne, and intracellular ROS and MAPK and NF-${\kappa}B$ signaling. Results : We found that FE suppressed ${\beta}$-hexosaminidase release, the production of IL-4 and TNF-${\alpha}$ and intracellular ROS level in RBL-2H3 by the anti-DNP IgE plus DNP-HSA stimulation. FE also significantly inhibited cytokine mRNA expressions, such as IL-$1{\beta}$, IL-2, IL-3, IL-4, IL-5, IL-6, IL-13, TNF-${\alpha}$ and GM-CSF in RBL-2H3. In addition, PF suppressed the phospholyation of ERK1/2, JNK1/2, p38 and $I{\kappa}B{\alpha}$ and NF-${\kappa}B$ signal transduction pathway. Conclusions : Our results indicate that FE protects against allergic response and exerts an anti-inflammatory effect through the inhibition of degranulation and production of cytokines and ROS via the suppression MAPK and NF-${\kappa}B$ of signal transduction. Abbrevations : FE, Fagopyrum esculentum; RBL-2H3, rat basophilic leukemia cell line; ROS, reactive oxygen species; MAPK, Mitogen-activated protein kinase; $NF{\kappa}B$, nuclear factor ${\kappa}B$; $TNF{\alpha}$, Tumor necrosis factor alpha; GM-CSF, Granulocyte macrophage colony-stimulating factor; ERK, extracellular-signal-regulated kinase; JNK, c-Jun NH2-terminal kinase; p38, p38 MAP kinase; $I{\kappa}B{\alpha}$, inhibitory-kappa B alpha.

• 대한화장품학회지
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• 제40권2호
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• pp.179-186
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• 2014

본 연구는 쓴메밀 추출물(FTE)의 미백 효과를 검증하기 위해 DPPH 라디칼 소거능, ABTS 라디칼 소거능, 타이로시나아제 활성 저해 효과 및 세포내 멜라닌 합성 억제 효과를 측정하였고, 단메밀 추출물(FEE)과 그 효능 비교를 하였다. 그 결과로 쓴메밀 추출물은 단메밀 추출물보다 항산화 효과 및 타이로시나아제 활성 저해, 세포내 멜라닌 합성 억제 효과가 높음을 확인하였다. 또한 인체 적용 실험에서 자외선 조사에 의한 인공 색소침착을 유발한 후, 쓴메밀 추출물을 함유한 크림을 제조하여 도포하였고, 8주 경과 후 피부 밝기를 측정한 결과 통계적으로 유의한 수준의 피부 미백 효과를 나타내었다. 이러한 결과들로 쓴메밀 추출물은 미백 개선을 위한 화장품 소재로 이용 가능성이 높을 것으로 기대된다.

• 한국자원식물학회지
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• 제18권2호
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• pp.246-250
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• 2005

아시아 지역에서 수집한 야생 쓴메밀의 종자 및 식물체 내의 루틴함량을 조사하였다. 쓴메밀은 종자 및 식물 전체부위에서 숙근메밀이나 단메밀보다 높은 루틴 함량을 나타냈다. 특히, 꽃은 숙근메밀의 2.2배, 단메밀의 9.5배, 줄기는 각각 3.1배와 24.9배, 종자는 3.2와 65배나 높았다. 3종에 대한 식물체 부위별 루틴함량은 모두 꽃>잎>종자>줄기>뿌리의 순으로 높았다. 종피색에 따른 루틴함량은 암회색>검은색>갈색, 회갈색 순의 경향을 나타냈으며, 종자의 형태는 Slender>Notched>Round 순으로 루틴함량이 높았다. 재배종은 야생종에 비해 루틴함량이 잎은 1.3배, 줄기가 1.4배, 종자가 1.2배의 높은 경향을 보였다. 부탄지역 수집품종은 잎, 줄기, 종자의 루틴함량이 다른 지역보다 높은 경향을 보였고, 슬로베니아 및 파키스탄지역 수집품종은 잎, 줄기에서, 인도 및 네팔지역 수집품종은 종자에서 가장 낮은 루틴함량의 경향을 보였다.

• 동아시아식생활학회지
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• 제16권5호
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• pp.573-577
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• 2006

The rutin content of Fagopyrum tataricum is 100-fold higher than that of Fagopyrum esculentum. For the development of a rutin-containing beverage, a suitable method to extract rutin from buckwheat (Fagopyrum tataricum) with high rutin yield was investigated. A roasting temperature range of $310/240^{\circ}C$ (Ed-confirm that this is indeed a range; otherwise perhaps, 'Roasting temperatures ranging from 310 to $240^{\circ}C$ were considered$\ldots$') was considered to be the best as the basic color reference. Rutin content varied according to the roasting time and heating temperature; i.e., it decreased with increasing roasting time and temperature. (Ed- this sentence is unnecessarily complicated and should be simplified to 'Rutin content decreased with increasing roasting time and heating temperature.') The optimal extraction temperature and processing time were obtained as $80^{\circ}C$ and 10 minutes to maximize the rutin concentration in the extract.

• 한국산학기술학회논문지
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• 제19권1호
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• pp.537-545
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• 2018

본 연구에서는 메밀의 발아초기에 발현되는 전사체의 다양한 정보 수집을 위해 양절메밀과 대관 3-3호의 RNA를 추출하여 전사체 분석을 수행하였다. 제주산 양절메밀과 대관3-3호의 종자 및 발아 후 12, 24, 36시간별로 total RNA를 추출하고, llumina Hiseq 2000 플랫폼을 사용하여 시퀀싱 하였다. SolexaQA package의 DynamicTrim과 LengthsORT 프로그램으로 이용하여 raw 데이터 분석을 실시한 후, 어셈블리(assembly)와 annotation을 수행하였다. RNA-seq raw 데이터로부터 약 84.2%, 81.5%에 해당하는 16.5Gb, 16.2Gb의 transcriptome 데이터를 확보하였다. 47Mb에 해당하는 43,494개의 대표적인 전사체(representative transcripts)를 확보하였고, 그 중에서 annotation DB와 서열 유사도를 갖는 서열은 23,165개로 확인되었다. 메밀의 representative transcripts 유전자의 유전자 온톨로지(gene ontology) 분석결과, biological process는 metabolic process (49.49%)에서, cellular components는 cell (46.12%)에서, molecular function은 catalyltic activity (80.43%)에서 유전자가 많이 분포되어 있는 것을 확인하였다. 종자의 발아에 관련된 gibberellin receptor GID1C의 경우에는 양절메밀, 대관 3-3호의 발현양이 모두 시간이 지남에 따라 증가되는 것을 확인할 수 있었으며, gibberellin 20-oxidase1의 경우에는 양절메밀에서는 발아 후 12 시간이내에 증가되었으나, 대관 3-3호에서는 36시간까지 유전자 발현양 증가하는 것을 확인할 수 있었다. 이러한 제주산 메밀의 발아초기 단계별 전사체 분석 데이터는 종간의 기능적, 형태학적 차이를 일으키는 메커니즘 규명에 도움을 줄 것으로 사료된다.

• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2005년도 춘계 학술발표대회
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• pp.121-122
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• 2005

• 한국영양학회:학술대회논문집
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• 한국영양학회 2003년도 추계학술대회 및 정기총회
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• pp.175-175
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• 2003