• 식물병연구
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• 제29권1호
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• pp.23-38
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• 2023

Erwinia amylovora에 의해 발생하는 화상병은 2015년 국내에서 처음 보고된 이후 전국적으로 확산되고 있다. 화상병은 벌과 같은 화분매개충, 강한 바람을 동반한 강수와 이병주 전정 작업에 의한 전파 등 많은 경로를 통해 병원균 감염이 진행되어 발생한다. 이 외에도 자생하는 개야광나무속, 산사나무속, 피라칸다속, 벚나무속, 마가목속 등의 장미과 식물이 E. amylovora의 기주식물과 전파원이 될 수 있음이 보고되어 있다. 그러나, 국내에서는 아직까지 자생하고 있는 장미과 식물의 화상병 감수성에 관한 연구가 많이 다뤄지지 않은 상황이다. 본 연구에서는 2020년부터 2022년까지 3년간 국내에서 채집한 야생 장미과 식물 10속 25종을 대상으로 화상병 감수성 검정을 진행하였다. 10⁸ cfu/ml 농도의 E. amylovora 균액을 이용하여 채집한 식물의 꽃, 잎과 가지, 과실에 접종하고, 화상병 유사 병징 발현을 관찰하고 PCR을 통해 접종 조직 내의 E. amylovora 검출 여부를 분석하였다. 그 결과, 병징 발현과 병원균 검출 결과가 동일한 14종의 야생 장미과 식물을 확인하였다. 이러한 결과는 향후 적절한 화상병 방제 정책 수립에 기여할 수 있을 것으로 생각된다.

• The Korean Journal of Ecology
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• 제25권5호
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• pp.275-282
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• 2002

먹이식물에 대한 야생조류의 기호성을 조사한 결과 28종 중에서 특히 소나무, 팽나무, 노박덩굴, 찔레꽃, 주목, 사철나무 등을 선호하는 것으로 나타났다. 야생조류의 먹이섭식량은 번식기(5∼6월)에는 동물성(섭식률 92.2%)을 식물성(섭식률 32.7%)보다 선호하였으나 비번식기(11∼12월)에는 동·식물성 모두 선호하는 것으로 나타났다. 또한 먹이 종류별 선호도는 식물성은 조, 좁쌀을 동물성은 쇠기름덩이, 번데기를 선호하였다. 공원별 인공새집 이용률은 노산공원 77.5%, 산호공원 50.3%, 진주성지 44.1%, 비봉공원 42.2% 순으로 노산공원에서 인공새집의 의존률이 가장 높았고, 인공새집 구멍 크기별로는 5cm 출입공보다 3cm 출입공을 주로 이용하는 것으로 나타났다.

• 생약학회지
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• 제28권1호
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• pp.48-53
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• 1997

This study was performed to elucidate the possible antioxidative effects of several wild plant extracts. Wild plants were extracted with methanol or water using general method. In first experiments, antioxidative effects were measured by lipid peroxidation using rat brain homogenate. Coptis japonica extract showed the highest antioxidative activity among the 15 wild plant extracts. In second experiments, rats were fed on the semipurified diets with or without Coptis japonica extracts at the level of 0.5% for 4 weeks. MDA production of liver homogenate were significantly lower in the rats fed Coptis japonica extracts (P<0.05). Cytosolic catalase. GPX, and SOD activities were not changed, whereas the activities of GST and glutathione level were significantly higher in rats fed Coptis japonica extracts (P<0.05). These results suggest that Coptis japonica extract has an antioxidative effect through increasing GST activity and glutathione level and decreasing MDA production.

• Rapid Communication in Photoscience
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• 제3권3호
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• pp.53-55
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• 2014

The shade avoidance syndrome is a morphological and physiological response when plants are exposed to shade. Recent work in Arabidopsis had begun to define the molecular components of the shade avoidance syndrome in dicotyledonous model plant. However, little is known about the shade avoidance response networks in agriculturally important monocotyledon crops such as rice. Here, we found that the degree of bending at the lamina joint is inversely proportional to the R:FR ratio. To elucidate which phytochrome is involved in this response, we did lamina joint inclination assay with the rice phytochrome-deficient mutants (osphyA, osphyB, and osphyC) and the wild type plants. Whereas the osphyA and osphyC knockout mutants bent at the lamina joint in the far-red rich condition as the wild type plants, the osphyB knockout mutants no longer bent at the lamina joint in the far-red rich condition. These results suggest that PHYB acts as a sole photoreceptor in the lamina joint inclination response in rice.

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 2003년도 정기총회 및 추계학술발표회
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• pp.79.1-79
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• 2003

Two pathogen-induced hot pepper transcription factors (CaNACl and CapIfl) were introduced into‘MicroTom’tomato by Agrobacterium tumefaciens-mediated transformation. We used to nptII containing kanamycin resistance gene as a selection marker. Both transformed and non-transformed plants were transferred to pot after rooting test in vitro. To approximate the levels of caNACl transcript in leaves of wild-type and transgenic plants, RNA blots were hybridized with double-stranded full-length CaNACl probe at moderate stringency, Although the relative signal strength for hybridization fluctuated among the samples on different blots, transgenic plant lines N-1, N-2 and N-3 consistently displayed increased levels of CaNACl transcript relative to other transgenic lines and wild-type plants. Of all the transgenic lines examined, line N-7 had the least amount of CaNACl transcript. Role of these transcription factors in pathogen defense will be examined by overexpression in tomato.

• Environmental Engineering Research
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• 제21권3호
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• pp.247-255
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• 2016

Ten trace elements (Mg, Ca, V, Cr, Mn, Fe, Cu, Zn, Mo, and Cd) were determined in seven traditionally used wild medicinal plants of the Nagas in the North-East India viz Cynoglossum furcatum Wallich, Elsholtzia blanda Bentham, Lycopodium cernuum Linnaeus, Potentilla fulgens Wallich ex Hooker, Swertia macrosperma C.B. Clarke, Thalictrum foliolosum DC and Valeriana jatamansi Jones. Plant samples were dried, weighed, digested and analyzed for their mineral distribution level ranging from trace to major elements by graphite furnace-atomic absorption spectroscopy. All the medicinal herbs studied were found to contain the ten elements analyzed. The elemental concentration is given in mg/kg. Mg and Ca are present in high concentrations in both the roots and leaves of the plant samples. Among trace transition metals Fe had the highest concentration, followed by Mn, Cr, Cu, V, Zn, and Mo. Analysis showed that the toxic Cd element was at a lower concentration and is within the permissible limit of FAO/WHO, California standards and United States Pharmacopeia Limit for Nutritional Supplements.

• 한국작물학회지
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• 제47권4호
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• pp.279-282
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• 2002

Oryzalexine A, a potent growth inhibitor against several weeds such as Digitaria sanguinalis (L) Scop., and Amaranthus lividus L. was purified by conventional solvent partitioning and column chromatographies. This substance showed strong inhibitory activity on several weeds: Germination of seeds of Poa annua L. was inhibited by 36.5 % at 1.0 mM and Amaranthus lividus L. by 56.1% at 2.5mM. Growth of root and shoot of Digitaria sanguinalis (L.) Scop. by 10.2% and 22.4% at 2.5mM, respectively. These suggest that Oryzalexine A in rice straw might affect the germination and growth of susceptible weeds and other plants.

• 한국식품영양학회지
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• 제34권4호
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• pp.340-346
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• 2021

The purpose of this study was to investigate the volatile flavor compounds of Ligularia stenocephala and Ligularia fischeri, edible wild plants. The volatile flavor compounds were isolated by the simultaneous distillation extraction method and analyzed by GC-MSD (gas chromatography-mass selective detector). Forty-eight volatile flavor compounds were identified in the extracts from L. stenocephala and the major compounds were sabinene, cis-ocimene, trans-caryophyllene, and β-elemene. Fifty-one volatile flavor compounds were identified in the extracts from L. fischeri and the major compounds were α-pinene, germacrene-D, transcaryophyllene, endo-1-bourbonanol and 1-limonene. The common volatile flavor compounds between two plants were transcaryophyllene, sabinene, β-elemene and β-cubebene etc. However, α-phellendrene and myrcene were identified in L. stenocephala, but were not identified in L. fischeri. However α-pinene, germacrene-D and limonene were identified in L. fischeri but were not identified in L. stenocephala.

• 한국환경복원기술학회지
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• 제4권4호
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• pp.19-24
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• 2001

숙근초화의 뗏장 생산에 적합한 초종과 바닥재를 선발하기 위해서 동자꽃, 톱풀, 큰꿩의비름, 섬기린초 등 자생식물 10종을 포함한 숙근초화류 14종의 뗏장 형성여부를 살펴보았다. 1. 재식장소에 따라서는 일반적으로 포트에 이식하여 노지에 정식하였을 경우보다 바크(bark)에 정식하였을 때 생육이 좋은 경향이었다. 2. 사용 바닥재의 종류에 따라서는 일반적으로 부직포에서 지면을 완전 피복할 때까지 걸리는 소요일수가 짧아지며, 뗏장형성능력이 좋았다. 특히 황마를 바닥재로 사용하였을 경우에는 기판이 부패하여 바크와 뿌리의 결속력이 크게 떨어지는 것을 볼 수 있었다. 3. 백리향, 좀씀바귀, 땅채송화, 바위채송화 등 포복성식물들은 꿩의비름, 애기개미취 섬쑥부쟁이 등의 직립성 초종에 비해 초고가 낮고 피복성이 좋은 것으로 나타났다.

• 대한임상독성학회지
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• 제11권2호
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• pp.130-132
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• 2013

Distinguishing wild plants in spring from ingestible plants is difficult. Differentiation of budding plants from other plants is particularly difficult. Many people want to find edible plants for health during the spring season. Scopolia japonica can cause symptoms of mania. The author experienced three cases of poisoning by Scopolia japonica. We reported on the cases with literature reviews.