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게시판 (13,048)
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RE: 유포르비아 트리고나
2025-06-04
HOME > 마이페이지 > 활동내역 > 반려식물 Q&A 제출내역
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Microbial Diversity Analysis of Bupleurum latissimum Nakai from Ulleung-Do of South Korea
2022-12-23
ABSTRACT: Bupleurum latissimum Nakai is a rare endemic species native to Ulleungdo in South Korea. This study aimed to report on the rhizosphere soil microbial diversity of B. latissimum. Proteobacteria, Actinobacteria, and Verrucomicrobia were identified in relative abundances of 27.77%, 21.70%, and 15.27%, respectively.
HOME > 주요사업 > 산림생물 보전·활용 증진 > 기술개발 성과 > 학술논문
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First report of Carnation Italian ringspot virusinfecting daisy fleabane in Korea
2022-12-23
HOME > 주요사업 > 산림생물 보전·활용 증진 > 기술개발 성과 > 학술논문
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Features of Bacterial Microbiota in the Wild Habitat of Pulsatilla tongkangensis, the Endangered “Lo
2021-12-28
ABSTRACT Microbes associated with plants significantly influence the development and health of the plants. The diversity and function of microbiomes associated with the long-sepal Donggang pasque-flower (DPF) plant, an endemic and endangered species in karst ecosystems, remain unexplored. In this study, we investigated the features of bacterial communities associated with the rhizosphere and roots of DPF plants and their functions in plant growth promotion. The DPF plants were collected from natural and cultivated habitats, and their 16S rDNA was sequenced to assess the bacterial community structures. The bacterial microbiota was more diverse in wild than in cultivated plants. The core bacterial microbiota commonly functioned as endophytes in both wild and cultivated DPF plants, although there were some differences. The identified bacterial strains benefited plants through nitrogen fixation, phosphate solubilization, or phytohormone production, inducing measurable growth differences in Arabidopsis thaliana. To the best of our knowledge, this study is the first to report the bacterial community structures associated with the rhizosphere soil and roots of DPF plants in karst ecosystems. The bacterial strains isolated in this study could be used to aid sustainable growth and restoration of rare plants in karst ecosystems. Our systematic research on the microbiomes associated with these endangered plants will contribute to their conservation as well as development of better cultivation.
HOME > 주요사업 > 산림생물 보전·활용 증진 > 기술개발 성과 > 학술논문
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Improving Restoration Efficiency by Modeling Optimal Sowing Periods: A Case Study of Two Native Plan
2021-12-28
Abstract: Efficient ecological restoration techniques are urgently required to minimize seed consumption and labor requirements. Here, we determined the optimal sowing period for two native species, Agastache rugosa (Korean mint) and Astilbe rubra (False goat's beard), toward their use for ecological restoration of Mt. Gariwang, a site damaged by the 2018 PyeongChang Winter Olympics' activities. We investigated the effects of daily mean temperature (DMT) and daily temperature range (DTR) on seed germination percentage, which decreased for both species with decreasing DTR and was optimal at a DMT of 25 C and 17.5 C for A. rugosa and A. rubra, respectively. We developed a single multiple regression equation that evaluated the effects of DMT and DTR simultaneously and determined the temperature scores when the germination percentage reached 85%. We applied the developed multiple regression equation by analyzing the temperature data of the restoration site. In addition, precipitation data analysis was added to set the optimal sowing period. As a result, the optimal sowing period for the two species was determined from May 21 to the end of May. This makes it possible to minimize seed consumption and labor requirements when sowing seeds. The model developed herein will be useful not only to guide the ecological restoration of Mt. Gariwang, but also for other regions using site-specific temperature data.
HOME > 주요사업 > 산림생물 보전·활용 증진 > 기술개발 성과 > 학술논문
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발효 해삼 및 흑삼 추출물의 산성다당체 분석 및 생리학적 특성
2021-12-28
Abstract The Stichopus japonicus and Black ginseng was fermented by Aspergillus awamori var. kawachii (white-koji mould). The acidic polysaccharide and specific ginsenoside content increased after fermentation of S. japonicus and Black ginseng. The acidic polysaccharide contents of fermented S. japonicus and Black ginseng were 21.3 and 74.2%, and specific ginsenoside (Rg3, Rg5, and Rk1) contents of fermented Black ginseng was 4.13 mg/g. The ROS (Reactive oxygen species) were eliminated by fermented S. japonicas, Black ginseng, and mixture. The immunophamacological activities of fermented S. japonicus, Black ginseng, and mixture were investigated by determine of stimulatory effects on cytokines release of immune response in immune cell. These fermented S. japonicus, Black ginseng, and mixture induced immune activity, among them, the mixture induced the highest immune activity. These results indicated that the fermented S. japonicus, Black ginseng, and mixture have immune activities and it can be used as a functional material.
HOME > 주요사업 > 산림생물 보전·활용 증진 > 기술개발 성과 > 학술논문
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Determination of Diversity, Distribution and Host Specificity of Korean Laccaria Using Four Approach
2021-12-28
ABSTRACT The genus Laccaria (Hydnangiaceae, Agaricales) plays an important role in forest ecosystems as an ectomycorrhizal fungus, contributing to nutrient cycles through symbiosis with many types of trees. Though understanding Laccaria diversity and distribution patterns, as well as its association with host plants, is fundamental to constructing a balanced plant diversity and conducting effective forest management, previous studies have not been effective in accurately investigating, as they relied heavily on specimen collection alone. To investigate the true diversity and distribution pattern of Laccaria species and determine their host types, we used four different approaches: specimen-based analysis, open database search (ODS), NGS analysis, and species-specific PCR (SSP). As a result, 14 Laccaria species have been ed in Korea. Results regarding the species distribution pattern were different between specimen-based analysis and SSP. However, when both were integrated, the exact distribution pattern of each Laccaria species was determined. In addition, the SSP revealed that many Laccaria species have a wide range of host types. This study shows that using these four different approaches is useful in determining the diversity, distribution, and host of ECM fungi. Furthermore, results obtained for Laccaria will serve as a baseline to help understand the role of ECM fungi in forest management in response to climate change.
HOME > 주요사업 > 산림생물 보전·활용 증진 > 기술개발 성과 > 학술논문
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Production of D-Allose From D-Allulose Using Commercial Immobilized Glucose Isomerase
2021-12-28
Abstract Rare sugars are regarded as functional biological materials due to their potential applications as low-calorie sweeteners, antioxidants, nucleoside analogs, and immunosuppressants. D-Allose is a rare sugar that has attracted substantial attention in recent years, owing to its pharmaceutical activities, but it is still not widely available. To address this limitation, we continuously produced D-allose from D-allulose using a packed bed reactor with commercial glucose isomerase (Sweetzyme IT). The optimal conditions for D-allose production were determined to be pH 8.0 and 60C, with 500 g/L D-allulose as a substrate at a dilution rate of 0.24/h. Using these optimum conditions, the commercial glucose isomerase produced an average of 150 g/L D-allose over 20 days, with a productivity of 36 g/L/h and a conversion yield of 30%. This is the first report of the successful continuous production of D-allose from D-allulose by commercial glucose isomerase using a packed bed reactor, which can potentially provide a continuous production system for industrial applications of D-allose.
HOME > 주요사업 > 산림생물 보전·활용 증진 > 기술개발 성과 > 학술논문
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The species range-size patterns for vascular plants of Seorak Mountain (Korea): Relationship between
2021-12-28
Abstract Research on species richness patterns and the advanced elevational Rapoport rule (ERR) has been widespread in recent years; however, there is a lack of such research for the temperate mountainous regions in northeast Asia. Here, we collected plant species from the Seorak Mountain in northeast Asia through field surveys. The species were divided into 11 groups according to the life-form types and phytogeography affinities of each species. The ERR was evaluated using Steven's method and by examining the species richness patterns of each group. The species richness patterns revealed a positive multimodal pattern along the elevation gradient, but phytogeography affinities (increasing trend) and life-form analysis (unimodal) exhibited different patterns. The elevation gradients (1,350 m for the mean elevation–range relationships), which are affected by the boundary effect and different life forms, did not consistently support the ERR. However, herbs as well as rare, endemic, and red list species showed consistent support for the ERR, which could be attributed to the influence by phytogeography affinities. Therefore, the results from Seorak Mountain showed that the ERR was not consistent for different plant life forms in the same area; however, phytogeography affinities could support and explain ERR.
HOME > 주요사업 > 산림생물 보전·활용 증진 > 기술개발 성과 > 학술논문
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Redox sensor QSOX1 regulates plant immunity by targeting GSNOR to modulate ROS generation
2021-12-28
Abstract Reactive oxygen signaling regulates numerous biological processes, including stress responses in plants. Redox sensors transduce reactive oxygen signals into cellular responses. Here, we present biochemical evidence that a plant quiescin sulfhydryl oxidase homolog (QSOX1) is a redox sensor that negatively regulates plant immunity against a bacterial pathogen. The expression level of QSOX1 is inversely correlated with pathogen-induced reactive oxygen species (ROS) accumulation. Interestingly, QSOX1 both senses and regulates ROS levels by interactingn with and mediating redox regulation of S-itrosoglutathione reductase, which, consistent with previous findings, influences reactive nitrogen-mediated regulation of ROS generation. Collectively, our data indicate that QSOX1 is a redox sensor that negatively regulates plant immunity by linking reactive oxygen and reactive nitrogen signaling to limit ROS production.
HOME > 주요사업 > 산림생물 보전·활용 증진 > 기술개발 성과 > 학술논문
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