• 대한약침학회지
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• 제20권3호
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• pp.194-200
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• 2017

Moringa oleifera Lam. or munga is one of the most important plant widely cultivated in India. It belongs to family Moringaceae. This plant is widely used as nutritional herb and contains valuable pharmacological action like anti-asthmatic, anti-diabetic, hepatoprotective, anti-inflammatory, anti-fertility, anti-cancer, anti-microbial, anti-oxidant, cardiovascular, anti-ulcer, CNS activity, anti-allergic, wound healing, analgesic, and antipyretic activity, Moringa oleifera Lam. The plant is also known as Horse - radish tree, Drumstick tree. Every part of this plant contains a valuable medicinal feature. It contain rich source of the vitamin A, vitamin C and milk protein. Different types of active phytoconstituents like alkaloids, protein, quinine, saponins, flavonoids, tannin, steroids, glycosides, fixed oil and fats are present. This plant is also found in the tropical regions. Some other constituents are niazinin A, niazinin B and niazimicin A, niaziminin B. The present review discusses the phytochemical composition, medicinal uses & pharmacological activity of this plant.

• The Plant Pathology Journal
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• 제17권2호
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• pp.83-87
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• 2001

Disease resistance in plants is often controlled by gene-for-gene mechanism in which avirulence (avr) gene products encoding by pathogens are specifically recognized, either directly or indirectly by plant disease resistance (R) gene products. Recent studies arising from molecular cloning of a number of R genes from various plant species that confer resistance to different pathogens and corresponding avr genes from various pathogens resulted in the accumulation of a wealth of knowledge on mode of action of gene-for-gene interaction. Specially, members of the NBS-LRR class of R genes encoding proteins containing a nucleotide binding site (NBS) and carboxyl-terminal leucine-rich repeats (LRRs) confer resistance to very different types of phytopathogens, such as bacteria, fungi, oomycetes, viruses, nematodes and aphids. This article reviewed the molecular events that occur up-stream of defense response pathway, specially, bacterial avr gene protein recognition mediated by NBS-LRR type R gene product in plant based on current research results of well studied model plants.

• 환경생물
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• 제34권4호
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• pp.233-239
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• 2016

산지초지의 관리 강도가 약해지면서 다양한 식물 군락이 형성되었다. 초본 군락은 흰겨이삭 - 큰조아재비 군락, 왕포아풀 군락, 김의털 군락 및 애기수영 군락이었고, 목본 군락은 덤불조팝나무 - 꼬리조팝나무 군락이었다. 군락에 따라 토양 미소동물 및 지표면 서식 절지동물의 군집 차이가 관찰되었다. 토양 화학성은 식물 군락에 따라 달랐으며, 이차적으로 다른 생물군에 영향을 주었다. 토양 선충은 같은 식성이라도 목 단위에서 다른 반응을 나타냈으며, 식물 섭식성 선충은 애기수영과 밀접한 관계를 보였다. Collembola나 Oribatida와 같은 미소절지동물의 밀도가 다른 것은 기질이 되는 유기물이나 미생물의 양이 식물 군락에 따라 다르기 때문인 것으로 추측된다. 지표면 서식 절지동물은 식물 군락별 군집 특성이나 종 수가 달랐다. 이것은 식생 구조와 구성이 절지동물의 다양성에도 영향을 준다는 것을 보여준다.

• 한국자원식물학회지
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• 제31권6호
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• pp.591-596
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• 2018

This study was conducted to develop gibberellin treatment technique to enhance flower initiation in Aquilegia japonica Nakai & H. Hara. Seedlings were planted in 12cm-diameter pots on October 2016 and grown in green house. Ambient temperature in the green house was set at minimum $15^{\circ}C$ during day and night to suppress flower initiation at cold temperature condition. Two different types of gibberellin, $GA_3$ and $GA_{4+7}$, at 4 different concentration levels 100, 200, 400 and 600 mg/L, were tested in this study. Gibberellin was sprayed first at planting and secondly at 1-week after planting. Ten to fifteen ml of gibberellin was sprayed for each pot. Plant height and petiole length were elongated by both gibberellin types, flowering was more enhanced by $GA_3$ (91.7~100%) compared to of $GA_{4+7}$. However, abnormal flower was less observed in $GA_3$ treatment (0~16.7%) than $GA_{4+7}$. Number of flower stalks per plant ranged from 1.9 to 2.5. Number of flowers per plant ranged from 6.8 to 10.3. Differences in flowering characteristics between treatments were statistically significant. Optimal gibberellin treatment to enhance flower initiation in A. japonica Nakai & H. Hara substituting cold treatment was $GA_3$ at the concentration between 400 mg/L to 600 mg/L.

• 인간식물환경학회지
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• 제24권1호
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• pp.63-73
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• 2021

Background and objective: This study was conducted to investigate the effects and preferences of horticultural therapy programs for stress relief according to MBTI personality types (Judging and Perceiving types) of female undergraduate students. Methods: The participants were divided into 15 Judging and 15 Perceiving types based on lifestyle preferences of the MBTI personality test, and a total of 30 participants participated in the horticultural therapy programs for 6 sessions. Results: Both Judging and Perceiving types showed a significant decrease in stress after participating in the horticultural therapy programs. Among the 8 life stress subfactors, Judging types showed significant stress relieving effects in 5 subfactors (relationship with the opposite sex, relationship with family, economic problems, future problems, value problems), while Perceiving types showed stress relieving effects in only 3 subfactors (relationship with family, economic problems, future problems). However, the changes in stress relief of 8 subfactors were not significantly different between the two personality types. The most preferred program for the Judging types was 'Making a flower basket', while the most preferred ones for the Perceiving types were 'Planting monstera', and 'Making preserved lemons with marigold', suggesting that the preferences varied depending on personality types. Conclusion: Therefore, it is necessary to develop suitable horticultural therapy programs for different subjects based on their personality types to enhance the effect of the programs on the subjects.

• The Korean Journal of Ecology
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• 제28권1호
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• pp.31-36
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• 2005

본 연구는 대구광역시 권역 내의 노상식생에 대하여 군락분류를 수행하고, 분류된 식생 유형에 대한 생태적 분포 특성을 규명하였다. 총 50 개의 식물사회학적 식생자료를 이용하여 Z.-M. 학파의 군락분류법이 수행되었으며, 주좌표분석법(PCoA)에 의하여 식물군락의 분포 특성을 분석하였다. 대구지역의 노상식생은 5 개의 식물군락(그령군락, 질경이군락, 왕바랭이군락, 강아지풀군락, 바랭이군락)으로 구분되었으며, 광엽형 노상식생은 질경이군락뿐으로 화본형 노상식생형이 우세한 것으로 밝혀졌다. 노상식생의 서식처는 토양환경조건의 안정성과 수분조건에 의하여 안정-적습, 불안정-적습, 안정-건조, 불안정-건조의 네 가지 분할로부터 각 식생유형과 대응되었다. 노상식생에서 가장 높은 상대기여도를 나타내는 출현종은 바랭이, 왕바랭이, 그령, 질경이, 돌피, 토끼풀, 마디풀, 강아지풀, 금강아지풀, 쑥 순으로 나타났다. 특히 몬순 이후에 화기(花期)를 가지는 바랭이, 왕바랭이, 그령 등이 상대기여도 50% 이상의 수준을 보이는 사실이 특기되었다. 대구 노상식생의 특성은 대구생물기후구와 한반도의 $C_4$식물계절(후몬순계절), 그리고 일본 및 동아시아의 노상식생 최상급단위로 제창된 질경이군목과의 식생학적 차별성 등으로 정의되었다.

• The Plant Pathology Journal
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• 제36권3호
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• pp.204-217
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• 2020

In nature, plants are always under the threat of pests and diseases. Pathogenic bacteria are one of the major pathogen types to cause diseases in diverse plants, resulting in negative effects on plant growth and crop yield. Chemical bactericides and antibiotics have been used as major approaches for controlling bacterial plant diseases in the field or greenhouse. However, the appearance of resistant bacteria to common antibiotics and bactericides as well as their potential negative effects on environment and human health demands bacteriologists to develop alternative control agents. Bacteriophages, the viruses that can infect and kill only target bacteria very specifically, have been demonstrated as potential agents, which may have no negative effects on environment and human health. Many bacteriophages have been isolated against diverse plant-pathogenic bacteria, and many studies have shown to efficiently manage the disease development in both controlled and open conditions such as greenhouse and field. Moreover, the specificity of bacteriophages to certain bacterial species has been applied to develop detection tools for the diagnosis of plant-pathogenic bacteria. In this paper, we summarize the promising results from greenhouse or field experiments with bacteriophages to manage diseases caused by plant-pathogenic bacteria. In addition, we summarize the usage of bacteriophages for the specific detection of plant-pathogenic bacteria.

• 식물분류학회지
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• 제53권3호
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• pp.181-200
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• 2023

Owing to the rapid development of sequencing technologies, more than 1,000 plant genomes have been sequenced and released. Among them, 69 Korean plant taxa (85 genome sequences) contain at least one whole-genome sequence despite the fact that some samples were not collected in Korea. The sequencing-by-synthesis method (next-generation sequencing) and the PacBio (third-generation sequencing) method were the most commonly used in studies appearing in 65 publications. Several scaffolding methods, such as the Hi-C and 10x types, have also been used for pseudo-chromosomal assembly. The most abundant families among the 69 taxa are Rosaceae (10 taxa), Brassicaceae (7 taxa), Fabaceae (7 taxa), and Poaceae (7 taxa). Due to the rapid release of plant genomes, it is necessary to assemble the current understanding of Korean plant species not only to understand their whole genomes as our own plant resources but also to establish new tools for utilizing plant resources efficiently with various analysis pipelines, including AI-based engines.

• The Plant Pathology Journal
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• 제39권4호
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• pp.319-334
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• 2023

Plant disease is an important factor affecting crop yield. With various types and complex conditions, plant diseases cause serious economic losses, as well as modern agriculture constraints. Hence, rapid, accurate, and early identification of crop diseases is of great significance. Recent developments in deep learning, especially convolutional neural network (CNN), have shown impressive performance in plant disease classification. However, most of the existing datasets for plant disease classification are a single background environment rather than a real field environment. In addition, the classification can only obtain the category of a single disease and fail to obtain the location of multiple different diseases, which limits the practical application. Therefore, the object detection method based on CNN can overcome these shortcomings and has broad application prospects. In this study, an annotated apple leaf disease dataset in a real field environment was first constructed to compensate for the lack of existing datasets. Moreover, the Faster R-CNN and YOLOv3 architectures were trained to detect apple leaf diseases in our dataset. Finally, comparative experiments were conducted and a variety of evaluation indicators were analyzed. The experimental results demonstrate that deep learning algorithms represented by YOLOv3 and Faster R-CNN are feasible for plant disease detection and have their own strong points and weaknesses.

• 한국작물학회지
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• 제48권6호
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• pp.442-446
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• 2003

참깨는 무한화서로 영양생장과 생식생장을 동시에 하는 특성 때문에 생육후기 상위부 꼬투리의 등숙 불량에 의해 수량감소 및 품질 저하를 초래하여 고품질 다수성 참깨 품종 육성의 큰 난제가 되어왔다. 본 연구는 참깨 고등숙 양질 다수성 품종을 육성의 기초자료를 얻기 위하여 유한형 2품종, 무한형 2품종 및 반유한형 1품종에 대해 이면교잡을 통하여 생육형 및 품종간 양적형질들의 유전분석을 실시하여 이들의 결과를 요약하면 다음과 같다. 1 이면교배 유전분석결과 개화기간, 등숙기간, 경장, 주당삭수, 주당분지수 및 등숙율 등 주로 수량에 관련된 형질들에서 비대립유전자의 상호작용이 존재함이 인정되었다. 2. 분산-공분산의 회귀식이 개화기간, 등숙율은 원점을 통과하여 완전우성을 보였으나 경장, 주당삭수 및 분지수는 원점 위를 통과하여 부분우성을 보였다. 3. 경장, 분지수는 상가적 효과가 우성효과와 거의 비슷하였으며, 개화기간은 우성효과가 상가적 효과보다 컸다. 4. 광의의 유전력은 개화기간, 경장, 주당삭수 와 분지수에서 0.91-0.99로 높았으나, 협의의 유전력은 개화기간, 삭장,등숙율 및 천립중은 0.18-0.34로 낮았고, 경장주당삭수와 분지수는 0.77-0.81로 광의의 유전력과 협의의 유전력간에 차이가 적었다.