• 제목/요약/키워드: and leaf culture

검색결과 907건 처리시간 0.028초

Efficacy of Tissue Culture in Virus Elimination from Caprifig and Female Fig Varieties (Ficus carica L.)

  • Bayoudh, Chokri;Elair, Manel;Labidi, Rahma;Majdoub, Afifa;Mahfoudhi, Naima;Mars, Messaoud
    • The Plant Pathology Journal
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    • 제33권3호
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    • pp.288-295
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    • 2017
  • Fig mosaic disease (FMD) is a viral disease that spreads in all Tunisian fig (Ficus carica L.) orchards. RT-PCR technique was applied to leaf samples of 29 fig accessions of 15 fig varieties from the fig germplasm collection of High Agronomic Institute (I.S.A) of ChattMariem, to detect viruses associated to FMD. Analysis results show that 65.5% of the accessions (19/29) and 80.0% (12/15) of the fig varieties are infected by FMD-associated viruses. From all fig accessions, 41.4% of them are with single infection (one virus) and 24.1% are with multi-infections (2 virus and more). Viruses infecting fig leaf samples are Fig mosaic virus (FMV) (20.7%), Fig milde-mottle-associated virus (FMMaV) (17.25%), Fig fleck associated virus (FFkaV) (3.45%), and Fig cryptic virus (FCV) (55.17%). A reliable protocol for FCV and FMMaV elimination from 4 local fig varieties Zidi (ZDI), Soltani (SNI), Bither Abiadh (BA), and Assafri (ASF) via in vitro culture of 3 meristem sizes was established and optimized. With this protocol, global sanitation rates of 79.46%, 65.55%, 68.75%, and 70.83% respectively for ZDI, SNI, BA, and ASF are achieved. For all sanitized varieties, the effectiveness of meristem culture for the elimination of FCV and FMMaV viruses was related to meristem size. Meristem size 0.5 mm provides the highest sanitation rates ranging from 70% to 90%.

Comparison of chrysanthemum cultivars based on direct shoot regeneration rates in tissue culture

  • Han, Bong-Hee;Lee, Su-Young;Park, Byoung-Mo
    • Journal of Plant Biotechnology
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    • 제36권3호
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    • pp.275-280
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    • 2009
  • Direct shoot regeneration from leaf or internode or petiole segments was conducted in 33 cultivars of chrysanthemum. Shoot regeneration rates varied according to cultivars, culture media, and explant types. The high shoot regeneration rate of more than 70% in 15 cultivars (‘Pink Pangpang’, ‘Orange Memory’, ‘Relance’, ‘Zinba’, ‘Beakma’, ‘Innocence’, ‘Sunny Pangpang’, ‘Euro Yellow’, ‘Dublin’, ‘Boramae’, ‘Peak’, ‘Euro White’, ‘Vesuvio White’, ‘Linneker Salmon’ and ‘Pink Pride’) and 2 ones (‘Forward’ and ‘Agason’) was obtained from the segments of leaves and internodes, respectively, cultured on MS medium containing 1.0 mg-$L^{-1}$ BAP, 0.5 mg-$L^{-1}$ IAA and 30 g-$L^{-1}$ sucrose. That in 6 cultivars (‘Shuhonochikara’, ‘Hakunosen’, ‘Whitney Pangpang’, ‘Plaisir D’Amour’, ‘Grace’ and ‘Kumsu’) was observed from the segments of leaves or internodes cultured on 1/2 MS medium 1.0 mg-$L^{-1}$ BAP, 0.5 mg-$L^{-1}$ IAA and 15 g-$L^{-1}$ sucrose In case of 3 cultivars (‘Ilweol’, ‘Puma White’ and ‘Sharon’), when internode explants excised from mother plants, which were pre-cultured on MS medium containing 2 g-$L^{-1}$ activated charcoal and 30 g-$L^{-1}$ sucrose for two months in the dark, and cultured on MS medium containing 1.0 mg-$L^{-1}$ BAP, 0.5 mg-$L^{-1}$ IAA and 30 g-$L^{-1}$ sucrose, that was shown. Seven cultivars including ‘Puma Yellow’, ‘Argus’, ‘Yes Morning’, ‘Whiparam’, ‘Hakunohikari’, ‘Charming Eye’ and ‘Moon light’ requires more improved culture conditions. Tissues with the highest shoot regeneration rate were in descending order, leaf, petiole, and internode segments.

THE EFFECTS OF DIFFERENT SHADING OF MULCHING ON YIELD OF ROOT AND QUALITY IN PANAX GINSENG

  • Yang Yeong-yuh
    • 고려인삼학회:학술대회논문집
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    • 고려인삼학회 1974년도 학술대회지
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    • pp.137-146
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    • 1974
  • This experiment was on the purpose to study the effects of different shading of Mulching treatments on the quality and yield of ginseng root. This experiment were conducted at Mei-Feng for one year, from July, 1972 to July, 1973. The variety been used was introduced Korea Panax ginsvng. Three different Shading of Mulching treatments have been studied. The results were summerized as follows: 1. The growth of ginseng plant is good under around 4,300 Lux of light intensity. Fig . showed the shadow treatment of straw had a better effect than that of black or grey plastic film. The differences between treatments were significant. 2. The adequate soil temperature for ginseng culture was in the range of $16-18^{\circ}C$. Fig 2. showed that there were significant differences among treatments, of which the straw shadow treatment had the best effect. 3. The growth of ginseng plant was greatly affected wth various shadow treatments. Fig 1. showed both straw and black plastic film treatments had a better effects on growth of stem, leaf area and leaf numbers. 4. Fig. 2. 3. 4. 5 indicated there were distingished differences among all treatments. The straw and black plastics film mulching treatments had a better effects on root length, root diameter, root weight and leaf weight than the grey plastic film. 5. The amount of plant alkaloids and panacene content had related to the shadow treatment, as showed in Fig. 6 and 7 that straw shadow treatment had greatly increased the procuction of plant alkaloids and panacene content. 6. The quality and yield of roots of ginseng greatly affected by different shading of mulching treatments.

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Intestinal anti-inflammatory activity of Sasa quelpaertensis leaf extract by suppressing lipopolysaccharide-stimulated inflammatory mediators in intestinal epithelial Caco-2 cells co-cultured with RAW 264.7 macrophage cells

  • Kim, Kyung-Mi;Kim, Yoo-Sun;Lim, Ji Ye;Min, Soo Jin;Ko, Hee-Chul;Kim, Se-Jae;Kim, Yuri
    • Nutrition Research and Practice
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    • 제9권1호
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    • pp.3-10
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    • 2015
  • BACKGROUND/OBJECTIVES: Inflammatory bowel disease (IBD), including Crohn's disease and ulcerative colitis, involves chronic inflammation of the gastrointestinal tract. Previously, Sasa quelpaertensis leaves have been shown to mediate anti-inflammation and anti-cancer effects, although it remains unclear whether Sasa leaves are able to attenuate inflammation-related intestinal diseases. Therefore, the aim of this study was to investigate the anti-inflammatory effects of Sasa quelpaertensis leaf extract (SQE) using an in vitro co-culture model of the intestinal epithelial environment. MATERIALS/METHODS: An in vitro co-culture system was established that consisted of intestinal epithelial Caco-2 cells and RAW 264.7 macrophages. Treatment with lipopolysaccharide (LPS) was used to induce inflammation. RESULTS: Treatment with SQE significantly suppressed the secretion of LPS-induced nitric oxide (NO), prostaglandin $E_2$ ($PGE_2$), IL-6, and IL-$1{\beta}$ in co-cultured RAW 264.7 macrophages. In addition, expressions of inducible nitric oxide synthase (iNOS), cyclooxygenase (COX)-2, and tumor necrosis factor (TNF)-${\alpha}$ were down-regulated in response to inhibition of $I{\kappa}B{\alpha}$ phosphorylation by SQE. Compared with two bioactive compounds that have previously been identified in SQE, tricin and P-coumaric acid, SQE exhibited the most effective anti-inflammatory properties. CONCLUSIONS: SQE exhibited intestinal anti-inflammatory activity by inhibiting various inflammatory mediators mediated through nuclear transcription factor kappa-B (NF-kB) activation. Thus, SQE has the potential to ameliorate inflammation-related diseases, including IBD, by limiting excessive production of pro-inflammatory mediators.

녹차와 두충 잎 추출물 처리에 따른 콩나물의 생장 및 형태적 특징 (Growth and Morphological Charactersistics of Soybean Sprouts Treated with Leaf Extracts of Thea sinensis L. and Eucommia ulmoides Oliver)

  • 강진호;박철종;윤수영;전승호;허창영
    • 한국약용작물학회지
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    • 제13권1호
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    • pp.11-16
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    • 2005
  • 건강에 대한 관심이 고조되면서 식물잎 추출물과 같은 천연물질을 처리한 콩나물이 시판되고 있다. 녹차잎 추출물을 처리한 콩나물과 상대적으로 세근형성을 더욱 억제하는 것으로 보고되고 있는 두충잎 추출물의 처리호과를 비교하고자 녹차잎과 두충잎 추출물에 침종하여 재배한 콩나물의 재배일수에 따른 세근형성, 생장 및 형태에 미치는 영향을 조사하고자 본 시험을 수행되었던 바 그 결과를 요약하면 다음과 같다. 1. 두충잎과 녹차잎 추출물 처리 모두 풍산나물콩과 소원콩 보다는 준저리에서 하배축 길이가 7cm 이상의 비율이 현저히 낮은 반면, 발아는 되었으나 4cm 이하의 비율을 현저히 증가 시켰다. 이들 추출물 처리에 대한 하배축, 뿌리 및 전체길이, 하배축 중간과 hook부분 직경, 각부위 및 전체 생체중에 대한 품종별 반응도 하배축 구성 비율과 유사하였다. 2. 두충잎과 녹차잎 추출물 처리 모두 재배일수가 길어질수록 하배축 길이가 4~7cm, 4cm 이하 및 미발아개체의 비율 감소로 7cm 이상의 비율이 증가되었다. 하배축, 뿌리 및 전체길이, 하배축 중간과 hook부분 직경, 하배축과 뿌리 무게의 증가로 전체 생체중은 재배일수가 길어질수록 증가되었다. 3.녹차잎 추출물 처리에 비하여 두충잎 추출물 처리에서 세근형성이 지연되고 개체당 형성된 세근수도 적고 재배일수가 길어질수록 증가정도가 적었다. 하배축과 뿌리 길이, 하배축 굵기, 개체당 전체생체중에서도 녹차잎 추출물보다는 두충잎 추출물 처리에서 작고 적어 콩나물 생장에 대한 억제효과는 두충잎 추출물 처리에서 큰 것으로 나타났다.

교배육종 및 소포자 배양에 의한 뿌리혹병 race4 저항성 배추 계통 육성 (Development of clubroot race4 resistant inbreds using conventional breeding and microspore culture method in Chinese cabbage)

  • 박수형;윤무경;임용표
    • 농업과학연구
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    • 제38권4호
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    • pp.613-618
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    • 2011
  • To develop clubroot resistant Chinese cabbage inbreds, IT 033820, a clubroot resistant turnip, was cross pollinated with a Chinese cabbage inbred of BP 079. From 2005, conventional breeding and microspore culture method performed using these F1 plants as parental materials. In 2007, conventional breeding method resulted in 21 F3 inbreds. After inoculation of clubroot race 4, one inbred showing 83% resistant was selected and registered as 'onkyo 20036ho' in 2008. From 2005, we scanned hybrid cultivars using micro spore culture and developed many doubled haploid (DH) lines in Chinese cabbage. Using Chinese cultivar of 'oong-baek 2ho' we developed 26 DH inbreds in 2007. After inoculation of clubroot race 4, one DH inbred showing 77% resistant and yellow inner leaf color was selected and registered as 'onkyo 20034'in 2008. We found conventional breeding method was effective using introduced germplasm showing low germination. However, when using hybrid cultivar as starting material, microspore culture method was powerful for developing various inbred in short time.

구기자나무의 잎과 마디절편체 배양에 의한 식물체 재생 (Plant Regeneration from Leaf and Internode Segment Cultures of Boxthorn (Lycium chinense Mill.))

  • 김동찬;정해준;민병훈;양덕춘
    • 식물조직배양학회지
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    • 제28권6호
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    • pp.329-333
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    • 2001
  • 배지, 절편체의 종류 그리고 생장조절제가 약용작물인 구기자나무 (Lycium chinese Mill. 'Cheongyang')의 캘러스 유도 및 신초 분화조건에 미치는 영향을 조사하였다. 배지 종류별 기관분화는 신초 분화율, 신초 발생수 및 생체중이 MS, B5, WPM 배지 순으로 양호하였다. 구기자나무의 캘러스 유도는 절간 절편체보다 잎 절편체가 좋았고, 캘러스는 0.5mg/L NAA와 0.2 mg/L BA가 첨가된 MS배지에서 효율적으로 유도되었다. 신초 분화에 관여하는 cytokinin으로는 TDZ보다는 BA가 좋았으며 BA 단일처리보다는 NAA와의 혼용처리에서 더 양호하였다. 신초분화는 0.01 mg/L NAA와 0.2 mg/L BA가 첨가된 MS 배지에서 가장 좋았다

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조직배양 돌연변이 기술에 의한 Cymbidium 난 품종 "대국" 육종 (A New Cymbidium Orchid Variety "Daegook" bred by In Vitro Mutagenesis)

  • 강경원;박광섭;모숙연;김두환;강시용
    • 한국육종학회지
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    • 제41권4호
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    • pp.510-514
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    • 2009
  • 난 시장이 확대되고 있지만 일반대중이 선호하고 있는 동양계 심비디움 난은 대부분 수입 또는 산채에 의존하여 고가로 판매되고 있고, 서양계 심비디움은 외국 품종에 대한 로열티 지불 등의 문제가 대두되고 있다. 본 연구에서는 관상가치가 있고 대량증식이 가능하여 외국산 품종을 대체할 수 있는 소형 심비디움 난을 육성하고자 하였다. 동양계 및 서양계 심 비디움의 교배종인 "동양"의 바이러스 무병주를 생장점배양에 의해 기내에서 대량증식을 하던 중, 잎무늬 돌연변이 식물체를 선발하여 고정계통을 "대국"이라 명명하였다. "대국"은 잎의 가장자리에 백색이나 노란색 줄무늬가 있는 복륜 무늬종으로 광택이 있다. "대국"의 잎 길이는 약 40 cm, 엽폭은 1.6 cm, 엽수는 4~5장으로 동양에 비교하여 잎 및 초세가 작고 단아하다. 꽃에도 복륜무늬가 있으며 개화시기는 3~5월과 9~10월 연 2회이다. 신품종 "대국"은 잎무늬 줄무늬와 초세가 단정하여 분화용 엽예품으로 관상가치가 뛰어나며, 기존 동양계 심비디움 품종에 비교하여 조직배양 및 순화가 잘되고 생육이 왕성하여 값싸게 공급 가능한 품종이다.(품종특허 등록번호: 특허 제 0478734).

An Antifungal Property of Burkholderia ambifaria Against Phytopathogenic Fungi

  • Lee Chul-Hoon;Kim Min-Woo;Kim Hye-Sook;Ahn Joong-Hoon;Yi Yong-Sub;Kang Kyung-Rae;Yoon Young-Dae;Choi Gyung-Ja;Cho Kwang-Yun;Lim Yoong-Ho
    • Journal of Microbiology and Biotechnology
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    • 제16권3호
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    • pp.465-468
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    • 2006
  • Even though many pesticides are known for barley powdery mildew and wheat leaf rust, alternative controls are necessary, because of consumer rejection of chemical pesticides and the appearance of fungi resistant to fungicides. To discover biopesticides, many broths of microorganisms were screened. Of those, a culture broth of Burkholderia ambifaria showed an excellent antifungal activity against both Erysiphe graminis and Puccinia recondita, which cause barley powdery mildew and wheat leaf rust, respectively.

Expression of Low Temperature Regulated Gene H28 in Solanum tuberosum L.

  • 최경화;전재흥;김현순;정영희;정혁;양덕춘
    • 한국자원식물학회지
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    • 제10권4호
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    • pp.300-304
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    • 1997
  • 저온관련 유전자인 H28 유전자를 갖고 있는 Agrobacterium MP90균주를 Desiree와 Atlantie 감자 품종의 잎절편과 공동배양한 후 약 6-8주 후에 항생제가 첨가된 선발배지에서 multiple shoots를 얻을수 있었다. 선발된 형질전환체를 대상으로 PCR 방법을 이용한 NPT II 유전자와 H28를 확인한 결과 내한성유전자가 식물체의 genome에 안정적으로 삽입되었음을 확인하였고 northern blot 확인에 의하여 내한성 유전자가 발현됨을 확인하였다.

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