• 한국환경복원기술학회지
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• 제20권5호
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• pp.15-41
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• 2017

The purpose of this study is to present the basic data for conservation of forest ecosystem by surveying and analysing the flora distributed in Nakdong-Jeongmaek Mountains, Korea. The numbers of flora were 901 taxa including 116 families, 433 genera, 790 species, 4 subspecies, 90 varieties, 15 forms and 2 hybrids. The threatened species was Pedicularis ishidoyana. The rare plants were 33 taxa including Pseudostellaria sylvatica, Cimicifuga heracleifolia var. bifida, Isopyrum mandshuricum, Paeonia japonica, Syringa patula var. kamibayshii, Lilium distichum, Iris odaesanensis and so forth. The Korean endemic plants were 35 taxa including Salix koriyanagi, Thalictrum actaefolium var. brevistylum, Corydalis maculata, Lespedeza maritima, Cirsium setidens, Carex okamotoi and so forth. The specific plants by floristic region were 155 taxa including 55 taxa of grade I, 41 taxa of grade II, 36 taxa of grade III, 18 taxa of grade IV and 5 taxa of grade V. The naturalized plants were 62 taxa including Rumex obtusifolius, Amaranthus lividus, Medicago sativa, Geranium carolinianum, Malva sylvestris var. mauritiana, Foeniculum vulgare, Sonchus oleraceus, Tradescantia reflexa and so forth. The invasive alien plants were 5 taxa including Rumex acetocella, Solanum carolinense, Ambrosia artemisiifolia, Aster pilosus and Lactuca scariola.

• 한국환경복원기술학회지
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• 제13권5호
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• pp.12-27
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• 2010

The purpose of this study is carried out to present the raw data for restoring and maintaining an urban stream by objective surveying and analysing about flora in Changwon stream and Nam stream, Changwon-si, Gyeongsangnam-do, Korea. The results are as follows. The numbers of vascular plants were summarized as 248 taxa; 71 families, 184 genera, 220 species, 26 varieties and 2 forma. The numbers of vascular plants by streams were 202 taxa in Changwon stream and 206 taxa in Nam stream. The endemic plant was Salix pseudolasiogyne. The rare plants designated by Korea Foret Service were 2 taxa; Aristolochia contorta and Koelreuteria paniculata. The specific plants by floristic region were 12 taxa; Aphananthe aspera, Artemisia selengensis, Indigofera pseudotinctoria and so forth. The naturalized plants were 37 taxa; Ailanthus altissima, Amaranthus patulus, Amorpha fruticosa and so forth. The invasive alien plants designated by Ministry of Environment were 4 taxa; Ambrosia artemisiifolia var. elatior, Aster pilosus, Rumex acetocella and Solanum carolinense. The UI (Urbanized Index) and NI (Naturalized Index) were 13.6% and 18.3% in Changwon stream and 13.6% and 17.9% in Nam stream.

• Plant Biotechnology Reports
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• 제5권2호
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• pp.169-175
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• 2011

In this study, the JIP test was exploited to assess drought-tolerance of transgenic rice overexpressing OsNAC10. Two types of promoters, RCc3 (root-specific) and GOS2 (constitutive), were used to drive the transcription factor OsNAC10, a gene involved in diverse functions including stress responses. Three-month-old plants were exposed to drought for 1 week and their fluorescence kinetics was evaluated. Our results showed that drought-treated non-transgenic plants (NT) have higher fluorescence intensity at the J phase (2 ms) compared to transgenic plants, indicating a decline in electron transport beyond the reduced plastoquinone ($Q_A^-$). As manifested by negative L bands, transgenic plants also showed higher energetic connectivity and stability over NT plants under drought conditions. Also, the pool size of the end electron acceptor at the photosystem I was reduced more in NT than in transgenic plants under drought conditions. Furthermore, the transgenic plants had higher $PI_{total}$, a combined parameter that reflects all the driving forces considered in JIP test, than NT plants under drought conditions. In particular, the $PI_{total}$ of the RCc3:OsNAC10 plants was higher than that of NT plants, which was in good agreement with their differences in grain yield. Thus, the JIP test proved to be practical for evaluating drought-tolerance of transgenic plants.

• 한국작물학회:학술대회논문집
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• 한국작물학회 2022년도 추계학술대회
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• pp.15-15
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• 2022

• The Plant Pathology Journal
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• 제26권2호
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• pp.115-120
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• 2010

Although still poorly understood, accumulating evidence clearly supports that plants also have a good immune system which have been developed and acquired during the evolution. The lack of specific mobile immune cells like a B or T cell in plants additionally suggests that most plant cells have capacity for defending themselves against numerous pathogens. Rapidly growing advances in understanding plant defense responses implicate that plant and animal immune responses are evolutionarily convergent although their origins are thought to be different. On the basis of recent findings, here current understanding of plant defense responses will be discussed.

• Journal of Radiation Protection and Research
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• 제26권3호
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• pp.139-142
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• 2001

The one of important parameter involved in the calculation of internal radiation dose to the human body is the biological half-life of the radionuclide. The biological half-life is population specific and may differ from one population group to another. So the effective half-life of tritium exposure based on urinal bioassay measurement of Wolsong Nuclear Power Plants was investigated and studied.

• Journal of Plant Biotechnology
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• 제45권4호
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• pp.364-368
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• 2018

R2R3 유형의 단백질인 IbMYB1 전사인자는 고구마의 뿌리에서 안토시아닌 생합성 과정을 조절하는 중요한 단백질이다. 선행연구에서 IbMYB1 유전자의 발현 증가를 통한 안토시아닌의 합성 증가가 담배, 애기장대 및 고구마의 저장뿌리에서 증명된 바 있다. 본 연구에서는 괴경(저장줄기) 특이적 PATATIN 프로모터와 산화스트레스 유도성 SWPA2 프로모터의 조절하에서 안토시아닌을 고함유하는 IbMYB1 유전자 과발현 형질전환 감자를 개발하여 그 특성을 분석하였다. PAT-IbMYB1 형질전환 식물체들은 대조구 식물체 및 SWPA2-IbMYB1 식물체 보다 높은 안토시아닌 함량을 괴경에서 나타내었다. 본 연구의 결과로서, IbMYB1의 과발현은 형질전환 기술을 이용한 특정 조직 특이적 안토시아닌 생산에 매우 좋은 개발 기술이 될 것으로 생각되는 바이다.

• Journal of Plant Biotechnology
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• 제4권3호
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• pp.117-122
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• 2002

Cotton Glutathione S-Transferase(GST: EC 2.5.1.18) was cloned and Gh-5 cDNA was overexpressed in tobacco (Nicotiana tabacum) plants. The transformation of cotton GST in tobacco plant was confirmed by northern blot analysis. Type I and Type II transcript patterns were identified in Gh-5 transgenic tobacco plants. Type I transcripts was only discussed in this paper. Glutathione and 1-chloro-2,4-dinitrobenzene (CDNB) were used as the substrates, and the activity of GST in the type I transgenic plants was about 2.5-fold higher than the non-expressers and wild type tobacco plants. The expression of cotton GST in tobacco plants proved that Gh-5 could be translated into functional protein. Type I transgenic plants produced functional GST in the cells. Type I showed higher GST specific activity than Type II in the transgenic plants. Control and transgenic seedlings were grown in the growth chamber and under the light at 15$^{\circ}C$, and the effects of cotton GST in the seedlings was evaluated. The growth rate of Gh-5 overexpressors was better than the control and non-transgenic tobacco plants. Salinity tolerance was also analyzed on the seeds of transgenic plants. Seeds of Gh-5 overexpressors and the wild type tobacco seedlings were germinated and grown at 0, 50, 100, 150, and 200 mM NaCl solution. Gh-5 transgenic seedlings showed higher growth rate over control seedlings at both 50 and 100 mM NaCl solution. But at 0, 150, and 200 mM NaCl concentration, the difference in growth rate was not detected.

• 한국자원식물학회지
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• 제31권5호
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• pp.575-589
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• 2018

본 연구는 토함산지구 내 만호봉 일대에 분포하는 관속식물 상을 조사 및 분석함으로서 경주국립공원의 생태계를 관리 및 보전하기 위한 기초 자료 제공에 목적이 있다. 2012년 5월부터 2017년 8월까지 관속식물상을 조사한 결과는 다음과 같다. 증거표본을 기초로 관속식물상 목록을 작성한 결과, 91과 292속 397종 4아종 48변종 8품종 등 총 457분류군으로 나타났다. 멸종위기야생생물은 2분류군, 희귀식물은 11분류군, 한국특산식물은 14분류군이 조사되었다. 식물구계학적 특정식물은 총 39분류군으로, V등급은 3분류군, IV등급은 5분류군, III등급은 2분류군, II등급은 11분류군, I등급은 18분류군이다. 귀화식물은 33분류군이고 귀화율(NI)과 도시화지수(UI)는 각7.2%, 10.3%이다. 생태계교란식물은 돼지풀과 미국쑥부쟁이 2분류군이다.

• 환경생물
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• 제24권4호
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• pp.359-367
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• 2006

본 연구는 불영계곡 일대의 관속식물을 조사한 후 무분별한 개발과 채취로 인해 점점 멸종되어가고 있는 희귀식물과 한국특산식물 및 식물구계학적 특정식물종을 제시함으로써, 식물자원과 식생 보전을 위한 기초 자료를 마련하고자 본 연구를 수행한바 다음과 같은 결론을 도출하였다. 본 조사지역의 관속식물상은 101과 340속 547종 80변종 12품종 1아종 1교잡종으로 총 641종류(taxa)가 확인되었으며, 이중 희귀식물에는 식재수종을 제외한 창포(보존우선순위 54번), 꼬리겨우살이 (170번), 등칡 (57번), 쥐 방울덩 굴 (151번), 태 백제 비꽃 (202번), 지리산오갈피(58번), 꼬리진달래 (140번), 개불알꽃 (29번), 미치광이풀(208번)등 총 9종류(taxa)가 확인되었다. 한국특산식물에는 키버들, 각시족도리, 흰명아주여뀌, 숲개 별꽃, 진범, 점현호색, 흰현호색, 갈퀴현호색, 꽃황새냉이, 흰털괭이눈, 터리풀, 틸조록싸리, 지리산오갈피, 새며느리밥풀, 병꽃나무, 털잔대, 고려엉겅퀴, 가야은분취 등 총 18종류(taxa)가 확인되었다. 또한, 식물구계학적 특정식물종은 V등급에 식재종인 왕벚나무, IV등급에는 측백나무, 승마, 애기기린초, 꼬리진달래 등 13종류, III등급에는 개쇠뜨기, 돌단풍, 참당귀, 고려엉겅퀴 등 17종류, II등급에는 처녀치마, 동자꽃, 참바위취, 노랑제비꽃 등 15종류, 그리고 I등급에는 일월비비추, 촛대승마, 애기괭이눈, 초롱꽃 등 35종류로 분석되어 총 81종류(12.6%)가 확인되었다. 귀화식물에는 12과 40속 51종 2변종으로 총 53종류(taxa)가 확인되었으며, 귀화율은 8.2%, 도시화지수는 20.7%로 분석되었다. 최근 들어 불영계곡 일대는 도로 확장 등의 개발계획과 무분별한 관광객의 증가로 인해 훼손이 가속화되고 있는 실정이다. 따라서 빠른 시일에 생태계복원계획에 대한 다양한 대책과 제한적인 국토개발계획의 재수립이 필요하며, 희귀식물이나 특산식물 등이 분포하고 있는 서식처를 보전지역으로 지정하여 관리하는 방안이 필요할 것으로 사료된다.