• Proceedings of the Plant Resources Society of Korea Conference
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• 2019.10a
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• pp.21-21
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• 2019

백양꽃(Lycoris koreana)이 속해 있는 상사화속(Lycoris)은 종간 잡종이 쉽게 일어나 많은 자연교잡종을 가지고 있어 식물의 종분화와 진화를 연구하는데 흥미로운 분류군이다. 그러나 이런 사유로 명백한 분류학적 차이가 있음에도 불구하고 대상종의 분류학적 위치의 설정에 문제가 발생되어 계급의 설정에 혼란을 가져오기도 한다. 특히 한국산 상사화속의 종 분류는 그동안 많은 형태학적, 분계학적, 화분학적, 세포학적, 분자생물학적 연구가 이루어져 있음에도 아직도 도감과 많은 문헌에서 오류와 오동정의 문제점을 가지고 있다. 특히 백양꽃에 대하여서는 Nakai에 의해 신종으로 설정된 이래 일본에 분포하는 동 속 식물과의 관계 분석의 오류로 계급의 설정에 현재까지 다양한 문제가 발생되고 있다. 백양꽃은 전라남도 백양산에 분포하고, 포가 자주색이고, 꽃의 크기가 작으며, 화사와 화주가 적색 또는 암적색인 특징으로 Nakai에 의해 신종으로 설정되었다. 이후 Nakai와 Lee는 L. koreana 가 한국에만 분포하는 것으로 보고 한국 특산종으로 취급하였다. 그러나 백양꽃의 실체에 대하여 많은 논의가 있었으나 Lee and Oh는 L. radiata로 동정하였고, Yang은 L. koreana는 한국에 분포하지 않고 L. sanguinea만이 분포하는 것으로 보고하였다. Koyama는 L. sanginea에 대하여 L. sanguinea와 L. kuishiana를 비교하여 수술이 화관 밖으로 돌출되어 있는 점 외에는 L. koreana와 차이가 없음을 들어 각각 L. sanguinea var. sanguinea, L. sanguinea var. kuishiana 그리고 L. sanguinea var. koreana로 재설정 하였고 이는 한국과 일본학자들에 의해서도 거의 받아들여지고 있으나 본 연구를 통하여 L. koreana의 종(species)으로의 계급 부여와 한국특산식물 설정의 타당한 결과를 도출하였다.

• Korean Journal of Environment and Ecology
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• v.37 no.5
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• pp.318-326
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• 2023

The floristic target species (FTS) has been widely used as a important tool for environmental assessment in Korea. Here the floristic district is a key criterion for the selection and evaluation of FTS. The aim of this study is to clarify the intellectual meaning of the floristic district i.e. a sort of phytogeographical subunit. We reviewed 7 main literatures related to the floristic district. Nakai's 1919 Ulleungdo flora survey report was first to mention a region and/or province in terms of general geographical divisions. In 1977, the floristic district map of the Korea vascular plants was first described by Oh. In 1978, Lee & Yim proposed a new floristic district map dividing the central and southern regions, and the district boundaries have been adjusted by many other researchers. In the end, the floristic district map modified slightly from Lee & Yim's map was nationally recognized in 2018. However, the boundaries of floristic districts were inconsistent, both in their setting and adjustment, as well as the indicator species of the district. No basis for this inconsistency could be confirmed. We concluded that all district maps depend on arbitrary lines drawn a priori, and finally proposed the following two ecological strategies to ensure the effectiveness and practicality of the FTS as a scientific means for environmental impact assessment and national flora evaluation: (i) designing to achieve the flora list and the floristic district based on nativeness of plant distribution, (ii) constructing a habitat-based floral monitoring system.

• Korean Journal of Plant Taxonomy
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• v.51 no.1
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• pp.49-99
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• 2021

Gwangdeoksan Mountain (699.3 m) is the highest border mountain between the two cities of Chungcheongnamdo Province, Cheonan and Asan, Korea. In this study, we investigated the flora of Gwangdeoksan Mt. from April of 2015 to October of 2017. Through 20 independent field investigations, we identified and tallied a total of 428 species, 9 subspecies, 30 varieties, and a forma in 287 genera and 97 families. Of a total of 468 taxa, 128 taxa in 112 genera and 58 families were found to be Korean endemic species (7 taxa), floristic regional indicator species (45 taxa), rare or endangered species (3 taxa), species subject to the approval of outbound transfer (73 taxa), and alien or ecosystem disturbing species (32 taxa). The flora of Gwangdeoksan Mt. can be divided into four distinct floristic subregions, with higher diversity in the north-facing subregion. The complex flora of Gwangdeoksan Mt., emerging at the edge of two floristic regions of the Korean peninsula, may represent a significant conservation priority and a topic for future ecological and geographical studies.

• Korean Journal of Plant Taxonomy
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• v.36 no.1
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• pp.61-89
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• 2006

Algific talus slopes are local cold micro-environmental habitats where cool air escapes through vents and fissures of talus layer, and ice forms in summer. To access the phytogeographical significance and to develop the conservation strategy on vegetation of the algific talus, plant species composition on seven algific talus in South Korea was investigated. As a results, phytogeographically significant northern elements such as Cystopteris fragilis (L.) Bernh., Diplazium sibiricum (Turcz. ex Kunze) Sa.Kurata, Polypodium virginianum L., Vaccinium vitis-idaea L. and Hackelia deflexa (Wahlenb.) Opiz were distributed in these algific talus slopes (below $N37^{\circ}43^{\prime}$). In addition, subalpine species such as Woodsia subcordata Turcz, Rosa suavis willd., Clematis fusca var. coreana ($H.L{\acute{e}}v.$ & Vaniot) Nakai, Calamagrostis langsdorfii (Link) Trin. and Carex vaginata var. petersii (C.A.Mey.) Akiyama were also distributed as typical relictual species of these algific talus (less than alt. 400m). The algific talus slopes in Korean peninsular can be regarded as the insular refugia that northern plant species advanced southward during the latest glacial age have been isolated and adapted in some local microhabitats. Because the algific talus slopes as paleorefugia are very important in terms of phytogeography as well as meteorology ans geology, developments of strategies for in situ and ex situ conservation on these small isolated and threatened populations associated with the algific talus urgently needed.

• Journal of Plant Biology
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• v.35 no.3
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• pp.283-305
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• 1992

Phytoliths (plant stones) mean all types of mineral deposition formed in or between plant cells. However, most of the researches on the phytoliths so far have been focused on the opaline silica bodies (silicified phytoliths) formed by grasses. Therefore, the phytolith is usually refered to opaline silica body in a narrow sense. Phytoliths are very useful in grass classification, and their usefulness as microfossils is also proved in several other fields, including soil science, paleoecology, and archaeology. Recently attention has been paid to the possibility that they might function as carcinogen. The purpose of this review is to present an overview of the nature and analysis of phytoliths and their applications in botany as well as other fields of sciencess.encess.

• Korean Journal of Plant Taxonomy
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• v.35 no.2
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• pp.143-151
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• 2005

Cytological characteristics of Abeliophyllum distichum (Oleaceae), endemic to Korea, was examined. Somatic chromosome numbers was 2n = 28 which corresponds to diploid based on x=14. Chromosome length was varied continuously from $1.00{\mu}m$ to $2.03{\mu}m$. Karyotype of Abeliophyllum distichum was investigated in this study for the first time. The cytological characteristics including basic chromosome number, continuous variation of chromosome length, diploid and karyotype were similar to those of the genus Forsythia, which indicated the close relationship between Abeliophyllum and Forsythia, and consequently the two genera seemed to be included to same tribe.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2019.04a
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• pp.74-74
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• 2019

한라산은 남한에서 가장 높은 산으로 해발고도는 1,950m이고 그 면적은 약 9,100ha로 대한민국 최대의 섬제주의 중심에 자리하고 있다. 한라산은 특산식물이 36종이나 발견되어 국내 외적으로 생물적인 가치와 보전적인 가치를 인정받아온 곳이다. 본 연구에서는 한라산 성판악에서 백록담으로 이어지는 동사면의 해발고도 1,500m 부근의 진달래밭대피소 인근에 위치한 5ha 장기생태 연구 지역 식생조사를 통해서 조사된 자생 식물종을 정리하였다. 관속식물은 31과 44속 56종 등 총 56분류군으로 조사되었으며, 조사지역에서 확인된 산림청지정 희귀식물은 구상나무(LC), 주목(VU), 섬매발톱나무(DD), 개족도리풀(LC), 시로미(VU), 게박쥐나물(LC), 사철란(LC) 등 7분류군이 확인되었고, 특산식물로는 구상나무, 족도리풀, 제주조릿대, 산제비란 등 4분류군이 확인되었다. 식물구계학적 특정식물은 I등급은 일엽초, 윤노리나무, 야광나무, 큰천남성 등 6분류군, II등급으로는 두루미꽃, 홍괴불나무, 마가목, 산개벚지나무, 다람쥐꼬리 등 10분류군, III등급은 만년석송, 구상나무, 애기괭이밥, 호자덩굴 등 8분류군, IV등급은 시로미 그리고 V등급은 설앵초가 각각 1분류군으로 조사되었다. 한라산 아고산대의 대표 우점종인 구상나무는 특산식물이자, 식물구계학적 특정식물 III등급이며, 산림청지정 희귀식물 약관심종으로 추가 연구를 통하여 보전관리방안이 수립되어야 하는 것으로 판단된다.

• Asian Journal of Turfgrass Science
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• v.25 no.2
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• pp.125-132
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• 2011

Drought is a major limiting factor in turfgrass management. Turfgrass responses to water deficit depend on the amount and the rate of water loss as well as the duration of the stress condition. This review paper was designed to understand responses such as photosynthesis, canopy spectral reflectance, plant cell, root, hormone and protein alteration when turfgrass got drought stress. Furthermore, mechanisms to recover from drought conditions were reviewed in detail. However, there are still many questions regarding plant adaptation to water deficit. It is not clear that the mechanism by which plants detect water deficit and transfer that signal into adaptive responses. Turfgrass research should focus on the best management practices such as how to enhance the ability of self-defense mechanism through understanding plant responses by environmental stress.

• Korean Journal of Plant Taxonomy
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• v.41 no.2
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• pp.156-163
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• 2011

The morphological characteristics of Chionanthus retusus Lindl. & Paxton in Korea are reviewed in this study through the comparison with its previous records and a distribution map of this species is created using previous flora and voucher specimens. The leaf epidermal micromorphology and the petiole anatomy are also briefly described.

• Journal of Plant Biotechnology
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• v.33 no.3
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• pp.209-222
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• 2006

The whole genome sequence was completed in arabidopsis and rice. Large amounts of EST data have been available from many other plants. Also, vast quantities of diverse biological data have been generated by various '-omics' technologies such as transcriptomics, proteomics, and metabolomics. Bioinformatics plays an essential role in extracting useful information from these tremendous amounts of biological data. In this review we introduced experimental methods to generate massive data, applications to plant science such as plant disease resistance and molecular breeding and bioinformatics tools and web sites available in plant biotechnology R&D. We concluded that new experimental methods and bioinfomation analysis techniques have made major contributions to the development of plant biotechnology and that bioinformatics has become a critical factor in plant biotechnology R&D.