• Journal of Applied Biological Chemistry
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• 제51권3호
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• pp.83-87
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• 2008

Tension wood, a specialized tissue developed in the upper side of the leaning stem and drooping branches of angiosperm, is an attractive experimental system attractive for exploring the development and the biochemical pathways of the secondary cell wall formation, as well as the control mechanism of the carbon flux into lignin, cellulose, and hemicellulose. However, the mechanism underlying the induction and the development of the tension wood is largely unknown. Recently, several researchers suggested the possible roles of the plant growth hormones including auxin, gibberellin, and ethylene mainly based on the expression pattern of the genes in this specialized tissue. In addition, expressed sequence tag of Poplar and Eucalyptus provide global view of the genetic control underlying the tension wood formation. However, the roles of the majority of the identified genes have not yet been clearly elucidated. The present review summarized current knowledge on the biosynthesis of tension wood to provide a brief synopsis of the molecular mechanism underlying the development of the tension wood.

• The Korean Journal of Ecology
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• 제7권3호
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• pp.158-169
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• 1983

An investigation on the floras of Osik island and its neighboring two islands, 13km west of Gunsan, showed that there were a total of 305 kinds belonging to 81 families, 132 genus, 259 species, 42 varieties, 4 formas. Of the 305 kinds collected 213 kinds were herb and 92 kinds were woody plant. Seven species of evergreen broad-leaved trees including Euonymus japonica T., Eurya japonica T. and Elaeagnus macrophylla T. etc. are listed in the Norae-sum and Ga-do. The vegetations of Norae-sum and Ga-do were more favorable than that of Osik-do which vegetation was destructed by human inerferences. Coastal plants in these areas were about 30 species. It is interest that the floras of these areas were very similar to that of Gogunsangun-do (r=0.97) inspite of adjacency to inland area.

• 한국균학회지
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• 제46권3호
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• pp.235-239
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• 2018

Basil (Ocimum spp.) is a popular herb grown worldwide. During the past fifteen years, a downy mildew pathogen has caused considerable damage to basil cultivations. In August 2017, downy mildew disease symptoms were found on Basil Tree (or long foot Basil Tree), which was developed by the grafting of two basil varieties and is a continuous harvest plant with a woody trunk. The present study reports the occurrence of downy mildew disease in basil Tree and identifies the causal pathogen, as Peronospora belbahrii.

• 한국조경학회지
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• 제31권5호
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• pp.130-138
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• 2003

This study aims to review the research trends concerning landscape plants and to foresee the next trends in Korea. The research scope was limited to the articles listed in the Journal of Korean Institute of landscape Architecture. The number of articles related to landscape plants was calculated for five-year-period over 30 years and for groups of ten issues from 1973 until 2003. Of all the related articles, subjects or materials, method types, and contents were categorized and analyzed for groups of ten issues from 1973 until 2003. The results, of the research were as follows. Of 1,018 articles in total, there were 930 paper-type, 52 discourse-type, and 36 remains. Of 212 related articles, there were 205 paper-type, 3 discourse-type, and 4 remains. Of 232 subject articles, there were 115 woody-related, 47 herbaceous-related, and 33 soil-related articles. Of 221 method articles, there were 89 experiment, 54 field research 33 planting articles. Of 243 content articles, there were 47 investigation, 36 construction, 34 environmental effect, and 33 maintenance articles.

• 한국조경학회지
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• 제25권2호
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• pp.9-19
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• 1997

These studies were carried out to investigate seed propagation method and conducted using stem cuttings of Styrax japonicus for using as a woody landscape plant. The results are obtained as follows. After the H\sub2\SO\sub 4\ and GA\sub 3\ treatment to the seeds of Styrax japonicus, three months of warm treatment followed by cold stratification for four months increased seed germination rate. The rooting rate of Styrax japonicus was increased by the treatment with concentrated IBA, especially highest at 7,000ppm. Rooting percentages were highest for cuttings taken on July 15, 1995. Therefore, the most effective method for rooting of Styrax japonicus was treatment with 7,000ppm IBA on July 15 cuttings, which showed rooting rate of over 90%. Half-leaf-remained cuttings were more effective than those with two leaves on rooting of Styrax japonicus. Dipping for 10 seconds in IBA solution resulted in rooting rate of over 70%. The longer the treatment time the worse the rooting.

• Mycobiology
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• 제51권3호
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• pp.122-138
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• 2023

Elsinoë are plant pathogenic fungi that cause scabs, spotted anthracnose, and some morphological distortions on various plants, including woody plants, economically important crops, and ornamental plants. Taxonomical reexamination of Elsinoë species in Japan has not yet been conducted based on the modern species criteria. In this study, several Japanese isolates were reexamine based on the morphological and molecular-phylogenetic analysis of the internal transcribed spacer region (ITS), large subunit gene (LSU)m and protein-coding gene such as RNA polymerase II subunit (rpb2) and Translation elongation factor 1-alpha (tef). Japanese isolates were divided into four clades and three new species, Elsinoë hydrangeae, E. sumire, and E. tanashiensis were proposed. One species, Sphaceloma akebiae, was transferred to the genus Elsinoë.

• 식물분류학회지
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• 제40권2호
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• pp.90-104
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• 2010

일본 식물분류학자이자 생약학자인 Tstomu Ishidoya (1891-1958)는 1911년부터 1943년까지 한반도에서 식물 조사 및 채집을 하였으며, 그의 채집물은 후에 T. Nakai의 연구에 사용되었다. Ishidoya는 총독부 임업 기사로 있었던 1912년부터 1923년까지 한반도에서 활발히 식물채집을 하였다. Nakai는 문헌에 Ishdioya의 표본 번호를 6,487번대까지 인용하였는데, 이우철 교수가 일본 동경대학(東京大學)(TI)과 경도대학(京都大學)(KYO), 일본국립과학박물관(日本國立科學博物館)(TNS) 식물표본관에서 한반도 채집 표본으로 정리한 것은 1,350여점이다. Nakai는 Ishidoya표본의 채집지명을 일어 발음화하여 영문으로 기록하였다. 본 연구는 일본 소장 표본 기록과 국가생물종지식정보시스템(http://www.nature.go.kr)의 표본, 그리고 Ishidoya와 Nakai의 문헌을 중심으로 당시의 채집경로와 일정 등 173개 지역을 Nakai가 표기한 지명과 함께 채집일 순으로 정리하였다.

• Journal of Plant Biotechnology
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• 제42권4호
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• pp.380-387
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• 2015

Aronia (Aronia melanocarpa, Black chokeberry) is an important cash crop in domestic agriculture. We investigated the effects of plant growth regulators on shoot proliferation and rooting using in vitro tissue culture. The most effective shoot multiplication was observed on WPM (woody plant medium) supplemented with 1.0 mg/L zeatin ($8.3{\pm}1.0$ shoots/explant), while the highest rooting rate was obtained from half-strength WPM with 3.0 mg/L IBA (8.8 roots/explant). The rooted plantlets all survived in the artificial soil mixture (with a mixture of peat moss : perlite : vermiculite, 1:1:1, v/v/v) and grew up relatively uniform, ranging from 14 to 16 leaves, 8 to 10 cm in stem height, and 2.3 to 2.8 mm in stem diameter. While experimenting with 5 different varieties of Aronia, we found out that each variety had different characteristics of shoot proliferation and rooting. The total numbers of proliferated shoots per variety is as follows: $17.4{\pm}0.8$ for Nero, 14 to 15 for Purple and Mackenzie, and 10 for both Viking and Odamamachiko. Rooting rates were also various depending on the variety: 88% of Odamamachiko, 80% of Viking and Purple, and 76% of Nero and 60% of Mackenzie shoots rooted. The survival rate of the rooted plantlets was from 92% to 100%, varying by type. Further growth appeared to be better in auxin-treated plantlets, compared to untreated ones. Our results showed the possibility of establishing an effective in vitro micropropagation system for Aronia melanocarpa.

• 한국환경복원기술학회지
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• 제8권2호
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• pp.83-89
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• 2005

The historical changes of seeding work in Japan, the typical slope revegetation method, is possible to divide into five periods as follows; 1) The early period after creation(1927-1948) 2) The spreading period of modern revegetation work with manpower(1947-1958) 3) The spreading period of rapid revegetation technique using exotic grasses with machineries(1959-1985${\dots}$) 4) The spreading period of rapid reforestation technique by fast growing species mainly using leguminous shrub species(1986-1995${\dots}$) 5)The developing period of nature restoration technique using endemic arborous species(1996-) The evaluation basis of vegetated condition after slope seeding has been described to a official guide book, "The Standards of Slope Stabilizing Works" It was mainly revised three times after first edition in 1972, and also the point of evaluation basis changed from the vegetation coverage to the density of woody plant through the 3rd period and the 4th period Recently main purpose of slope seeding has been developing from the erosion protection to the nature restoration in the current of the 5th period, and "The tentative guidelines of slope nature restoration" was announced by The Slope Revegetation Section of Japanese Society of Revegetation Technology in 2004. It was proposed the planning techniques of using suitable seeds/plants based on the preservation level at the real each construction sites Consequently, at present the importance of advanced monitoring methods for vegetation maintenance and plant sociologic survey to evaluate the plant succession is increasing.

• 한국조경학회지
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• 제22권3호
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• pp.79-90
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• 1994

This survey was ocnducted to investgate changes of the plant community structure from 1972 to 1993 in forest of Mt. Kwanak and thirty-five plots that the size of each plot was 10m${\times}$10m(100㎡) were set up and the vegetation analysis was caried out. By the TWINSPAN analysis, the plant community of survey area were divied into Quercus mongolica, Q. mongolica-Pinus densiflora(1), Q. mongolica-P. densiflora(2), Q. acutissima community. The successional trends of the woody species were seemed to be from P. densiflora, Sorbus alnifolia to Q. mongolica in the canopy layer. But the successional trends in the understory and shrub layer were difficult to suppose. The forest vegetation of Mt. Kwanak from 1972 to 1993 was severely decreased in species number and individuals. The sensitive species for the environmental pollution were selected, and the tolerant plants for the acid soil were increased. In comparision with the DBH class distribution from 1972 to 1993, it shows that the ecological succession has stopped. In the analysis of soil characteristics, soil acidification has taken place over last twenty-two years(from pH=5.40 to pH=4.53). The concentration of K+, Ca++ was severly decreased(from K+=0.60m.e./100g to K+=0.06m.e./100g, from Ca++=3.20m.e./100g to Ca++=0.63m.e./100g), which also could seemed to be cause of plant community decline.