• 제목/요약/키워드: Scented-geranium

검색결과 4건 처리시간 0.01초

Scented Geraniums: a Model System for Phytoremediation

  • Raj, Sankaran-Krishna;Dixon, Michael-A;Praveen K. Saxena
    • 식물조직배양학회지
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    • 제27권4호
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    • pp.325-337
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    • 2000
  • All living organisms depend on soil and water for their sustained growth and development. In recent years, sustenance of life in these growth matrices has been adversely affected by the cumulative increase in environmental pollutants resulting from increasing population, growing economies and resource-use. This review provides a glimpse into the problem of global environmental pollution, the traditional technologies available for remediation and the scope of emerging‘plant-based remediation’technologies. Phytoremediation, the use of plants to effectively remove or stabilize contaminants from the growth substrate, is a low cost and ecologically friendly alternative to the common‘dig and dump’technologies. The field of phytoremediation has been driven by the intrinsic need for identification of ideal candidate plant species. To date, there are only a very few identified plants which satisfy all of the prerequisites for use in phytoremediation. The review focuses on one such plant species, the common horticultural plant scented geranium (Pelargonium sp.), with demonstrated potential to remediate metal / salt contaminated soils / aqueous systems. The characterization of tolerance and metal / salt accumulation potential of Pelargonium sp. and its efficacy in remediating complex contaminated sites are described. The unique ability of scented geraniums to tolerate excessive amounts of multi-metals, hydrocarbon and salt mixtures, and at the same time to accumulate significant amounts of metal and salt ions in the biomass, renders this plant species as one of the ideal candidates for remediation.

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제라늄(Pelargonium graveolense) 캘러스의 재분화 및 peroxidase isozyme 발현패턴 변화 (Plant Regeneration of Geranium (Pelargonium graveolense) Callus and Changes of Peroxidase Isozyme Pattern)

  • 이석현;이미영
    • Applied Biological Chemistry
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    • 제43권3호
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    • pp.184-189
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    • 2000
  • 방향성 제라늄(Pelargonium graveolense)의 옆병을 취하여 여러 가지 농도의 식물생장조절제가 포함된 MS배지에서 캘러스를 유도하였다. 2 mg/l NAA와 0.5 mg/l BAP가 함유된 MS배지와 2 mg/l 2,4-D와 0.5 mg/l BAP가 함유된 MS배지에서 최대 70% 이상의 캘러스가 유도되었으나, 2,4-D나 NAA 혹은 BAP 단독 처리군에서는 캘러스가 유도되지 않았다. 유도된 캘러스를 0.05 mg/l NAA와 0.5 mg/l BAP가 처리된 MS배지로 옮겼을 때 약 5주 후 캘러스당 최대 14개의 신초가 유도되었고, 이를 호르몬이 포함되지 않은 발근유도 해지로 옮겨서 약 3주간 배양했을 때 최대의 뿌리가 유도되었다. 호르몬 조성에 따른 제라늄 캘러스의 peroxidase(POD)활성변화를 조사했을 때 NAA와 BAP 처리군이 2,4-D와 BAP 처리군보다 전 배양기간동안 높은 POD 비활성을 나타내었다. 호르몬조성에 따른 POD isozyme의 발현양상을 비교해 보면 cathodic POD의 경우는 NAA와 BAP 처리군에서 주로 POD C3가 발현되었으나 2,4-D와 BAP 처리군에서는 주로 POD C1이 발현되었다. Anodic POD의 경우 POD A1, A2와 A3가 이 두 호르몬 처리군에서 모두 비슷한 수준으로 발현하였다.

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Water Wetting Observation on a Superhydrophobic Hairy Plant Leaf Using Environmental Scanning Electron Microscopy

  • Yoon, Sun Mi;Ko, Tae-Jun;Oh, Kyu Hwan;Nahm, Sahn;Moon, Myoung-Woon
    • Applied Microscopy
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    • 제46권4호
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    • pp.201-205
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    • 2016
  • Functional surfaces in nature have been continuously observed because of their ability to adapt to the environment. To this end, methods such as scanning electron microscopy (SEM) have been widely used, and their wetting functions have been characterized via environmental SEM. We investigated the superhydrophobic hairy leaves of Pelargonium tomentosum, i.e., peppermint-scented geranium. Their surface features and wettability were studied at multiple-scales, i.e., macro-, micro-, and sub-micro scales. The surfaces of the investigated leaves showed superhydrophobicity at the macro-, and micro-scales. The wetting or condensing behavior was studied for molecule-size water vapors, which easily adhered to the hairy surface owing to their significantly lower size in comparison to that of the surface.