• Title/Summary/Keyword: Rice (Oryza sativa L.)

검색결과 668건 처리시간 0.032초

볏짚에서 추출한 짚초액의 식물성장에 대한 영향과 항균 효과 (Effect on Plant Growth and Antibiosis of Rice Straw Liquor Extracted from Rice Straw)

  • 강화영;김세훈;김영주;박상숙
    • 한국환경보건학회지
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    • 제35권3호
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    • pp.178-186
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    • 2009
  • Rice straw liquid was prepared from rice straw using simple pyrolysis furnace, and its effects on plant growth and antibiosis were investigated. Effects of straw liquid on plant growth of Oryza sativa L., Glycine max Merr. and Lactuca sativa L. and antibiosis of bacteria and mold of rice straw liquid were studied. Th rice straw liquid showed good results on plant growth and multiplication. Rice straw liquid showed a little antibiosis on bacteria but non antibiosis on mold. Rice straw liquid had minimal inhibitory concentration of 2.5-5% for bacteria.

Effects of elevated CO2 concentration and temperature on growth and production of Oryza sativa L. cv. Ilmi, one of the main rice varieties in Korea

  • Lee, Eung-Pill;Park, Jae-Hoon;Jang, Rae-Ha;You, Young-Han
    • Journal of Ecology and Environment
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    • 제38권3호
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    • pp.335-342
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    • 2015
  • This research was conducted to examine the changes in growth and production of Oryza sativa L. cv. Ilmi, which was developed to cultivate high yielding rice variety in the Southern plains of Korea. The seedlings of the rice were cultivated from May to October in 2012 under three different conditions: control, AC-AT, ambient $CO_2$ + ambient temperature; AC-ET, ambient $CO_2$ + elevated temperature; EC-ET, elevated $CO_2$ + elevated temperature. The aboveground biomass, belowground biomass, the total biomass of the rice, and panicle weight per individual were the heaviest in the EC-ET. But, the number of grains per panicle and the weight of one grain was higher at the condition of AC-ET and EC-ET than that of AC-AT. The number of tiller was higher at the condition of AC-AT and AC-ET than that of EC-ET. However, there was no significant difference in the number of panicles per individual and the ripened grain rate among the control and global warming treatments. Crop yield was the highest in the EC-ET. This result means that the global warming condition should be considered in the selection of suitable paddy field for the limibyeo in the future.

Cyclophosphamide에 의해 유도된 면역 저하 마우스에서 흑미 (Oryza sativa L.) 호분층의 면역 활성 효과 (Effects of Black rice (Oryza sativa L.) Aleurone layer on Cyclophosphamide-induced Immunosuppression in Mice)

  • 이은별;최지혜;김시현;장환희;이성현
    • 생약학회지
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    • 제52권3호
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    • pp.170-176
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    • 2021
  • Anthocyanins are considered as one of the major functional components including cyanidin-3-glucoside and peonidin-3-glucoside anthocyanins of black rice (Oryza sativa L., BR) aleurone layer (OAL) extract. The immunomodulatory biological effects of OAL has rarely been evaluated. This study has extensively studied the immunomodulatory effects of BR in immunosuppressed mice by CPA. The immunostimulatory effects of BR extract in in vivo at 150 (OAL-1) and 300 mg/kg body weight (OAL-2) for OAL groups were measured and compared to the normal group (CON) ingested with distilled water only or other groups. After the 14 days of oral administration, immune related organ weights, serum immunoglobulin (Ig) A and IgG, and cytokines (IL-12, TNF-α) levels, splenocytes proliferation rate, and NK cell activity were evaluated as immune related biomarkers. The serum IgA and IgG values in the OAL-treated groups increased to the level of the CON. OAL significantly and effectively controlled the IL-12 and TNF-α levels and NK activity compared to the negative control (NC) group. The results suggest that BR aleurone layer with immunomodulatory activities has a great potential as a functional food by itself or as a supplement.

벼 (Oryza sativa L.)배양세포의 고중력유도성 cDNA의 탐색 (Screening of Gravity Inducible cDNAs in Rice(Oryza sativa L.) Cultured Cell)

  • 권순태;김길웅
    • 식물조직배양학회지
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    • 제21권2호
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    • pp.111-115
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    • 1994
  • 벼(Oryza sativa L. cv Nipponbaie)배양세포에 중력 450,000 x g를 처리하여 cDNA library를 만들고, 무처리 및 고중력을 처리한 cDNA 프로브로 스크리닝을 실시하여 고중력에 특이적으로 양성반응을 나타내는 GSC 13 및 GSC124 cDNA를 선발하였다. 선발된 두 유전자 GSC 13 및 GSC 124의 길이는 각각 1.34 및 0.67 kilobase pairs였으며, 배양세포내에서 관련된 transcript의 크기는 각각 2.0 및 1.9 kilobase pairs인 것으로 나타났다. 두 유전자를 프로브로한 Northern hybridization을 실시한 결과 GSC 13, GSC 124 공히 배양세포내에 고중력처리에 의해 특이적으로 축적되는 mRNA가 나타났으며, 중력강도 300,000 x g 에 비해 450,000 x g 처리에서 더욱 강한 축적을 보였고 450,000 x g 4시간 처리에서 최대의 수준을 보였다.

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UV-B가 벼잎의 carotenoid, polyamine 및 지질과산화에 미치는 영향 (Effects of UV-B radiation on carotenoids, polyamines and lipid peroxidation in rice (Oryza sativa L.) leaves)

  • 김학윤
    • 한국환경과학회지
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    • 제5권5호
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    • pp.635-642
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    • 1996
  • UV-B증가가 지질과산화에 미치는 영향과 UV-B조사에 대한 carotenoid 및 polyamine의 지질과산화 방어반응을 조사하기 위해 자연광 이용의 인공기상실내에서 12일간 벼 (Oryza sativa L., cv. Koshihikari) 유식물에 2단계의 UV-B조사 실험을 수행했다. UV-B처리에 의한 건물량의 감소는 조사시간의 경과와 함께 증가하였다. 지질과산화산물인 malondialdehyde (MDA)의 함량은 6일간의 UV-B처리에 의해 약 30 %의 증가를 보였다. Carotenoid의 함량은 UV-B처리에 의해 약 10% 감소하는 경향을 보였으나 통계학적 유의성은 없었다. 한편, 벼에는 크게 3종류의 polyamines (putrescine, spermidine, spermine)이 존재하였으며, 이들 모두 UV-B처리에 의해 상당히 증가되었다. 이상의 결과로 볼 때, UV-B조사에 의해 생성된 활성산소가 생체막지질의 산화에 관여하는 것으로 사료되며, polyamine의 증가는 UV-B조사에 의한 세포막 파괴를 막기 위한 생화학적 방어반응으로 사료된다.

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Selection of Herbicide Tolerant Cell lines from $\gamma$-ray-Irradiated Cell Cultures in Rice (Oryza sativa L. cv. Ilpumbyeo)

  • Bae, Chang-Hyu;Lee, Young-Ill;Lim, Yong-Pyo;Seo, Yong-Won;Lee, Do-Jin;Yang, Deuk-Chun;Lee, Hyo-Yeon
    • Journal of Plant Biotechnology
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    • 제4권3호
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    • pp.123-127
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    • 2002
  • Herbicide tolerant rice (Oryza sativa L. cv. Ilpumbyeo) cell lines were selected from $\gamma$-ray-irradiated anther-derived cell cultures. The anther-derived cell clusters were small (300 to 400 ${\mu}{\textrm}{m}$ in diameter) and uniform ones that were screened by miracloth filtering. The cell suspensions were very efficient to plate one layer onto agar medium and to screen target cell lines. Herbicide tolerant cell lines were selected by 5 mg/L cyhalofop butyl (CHB) treatment by using the small cell suspensions on agar N6 medium containing 1 mg/L 2,4-D and 0.2 mg/L kinetin. Of the cell lines, one line (CHB-1) showed stable tolerance at 10 mg/L concentration after 6-month culture without herbicide suspension. Growth stability of CHB-1 was similar to that of control cell line on 10 mg/L CHB containing medium. In this experiment we established herbicide tolerant cell line selection system by using anther-derived uniform-cell suspensions with $\gamma$-ray-irradiation.