• 한국자원식물학회:학술대회논문집
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• 한국자원식물학회 2003년도 제10차 국제학술회의 및 추계정기 학술발표회
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• pp.47-47
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• 2003

Plant growth promoting rhizobacteria (PGPR) have been shown to suppress phytopthora blight. This suppression has been related to both microbial antagonism and induced resistance. The PGPR isolates were screened by dual culture plate method and most of the isolates were showed varyinglevels of antagonism. Among the PGPR isolates pyoverdin, pyochelin and salicylic acid producing strains showed the maximum inhibition of mycelial growth of Phytophthora capsici and increased plant growth promotion in red pepper. PGPR isolatesfurther analysed for its ability to induce production of defence related enzymes and chemicals. The activities such as Phenyle alanin ammonia lyase (PAL), Peroxidase (PO), Polyphenol oxidase (PPO) and accumulation of phenolics were observed in PGPR pretreated red pepper plants challenged with Phytophthora capsici. The present study shows that an addition of direct antagonism and plant growth promotion, induction of defense related enzymes involved to enhance resistance against invasion of P. capsici in red pepper.

• 한국버섯학회지
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• 제13권4호
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• pp.275-281
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• 2015

An auxin-producing bacteria (A-1) was isolated from soils of Oyster mushroom farmhouse in Daejeon city, South Korea. The strain A-1 was classified as a novel strain of Ochrobactrum anthropi based on a chemotaxanomic and phylogenetic analyses. The isolate was confirmed to produce indole-3-acetic acid (IAA), one of auxin hormones, by TLC and HPLC analyses. The maximum concentration of IAA, $5.6mg\;L^{-1}$ was detected from the culture broth of O. anthropi A-1 incubated for 24 h at $35^{\circ}C$ in R2A broth containing 0.1% L-tryptophan. To investigate the growth-promoting effects to the crops, the culture broth of O. anthropi A-1 was inoculated to water cultures and seed pots of mung bean as well as lettuce. In consequence, the adventitious root induction and root growth of mung bean and lettuce were 2.7 and 1.4 times higher than those of the non-inoculated, respectively.

• 한국미생물·생명공학회지
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• 제48권2호
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• pp.223-229
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• 2020

The application of plant-growth-promoting rhizobacteria (PGPR) supports the growth of plants in contaminated soil while ureolytic bacteria can immobilise heavy metals by carbonate precipitation. Thus, dual treatment with such bacteria may be beneficial for plant growth and bioremediation in contaminated soil. This study aimed to determine whether the PGPR Pseudomonas fluorescens could work in synergy with ureolytic bacteria to assist with the remediation of cadmium (Cd)- and lead (Pb)-contaminated soils. Pot experiments were conducted to grow radish plants in Cd- and Pb-contaminated soils treated with PGPR P. fluorescens and the results were compared with dual inoculation of P. fluorescens combined with ureolytic Staphylococcus epidermidis HJ2. The removal rate of the metals from the soil was more than 83% for Cd and Pb by the combined treatment compared to 17% by PGPR alone. Further, the dual treatment reduced the metal accumulation in the roots by more than 80%. The translocation factors for Cd and Pb in plant tissues in both treatments remained the same, suggesting that PGPR combined with the carbonate precipitation process does not hamper the transfer of essential metal ions into plant tissues from the soil.

• 한국유기농업학회지
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• 제7권1호
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• pp.105-113
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• 1998

수종의 근권세균이 양액재배 오이의 생장에 미치는 영향을 구명하기 위하여 Azospirillum sp., Rhodopseudomonas sp., Pseudomonas sp., Bacillus sp.와 Corynebacterium glutamicum간의 융합균주 등을 근권처리하였다. 융합균주의 근권처리후 4일에 세균의 밀도변화르르 보면 코코피트 > 암면 > 배양액 등의 순으로 나타났다. 균주의 근권처리에 따른 오이의 생장촉진효과는 암면경보다 코코피트경에서 더 높았으며, 균주의 종류별 오이의 생장촉진효과를 보면 Azospirillum sp. > 광합성세균 $\ge$ 융합균주 Pseudomonas sp. > 대조구 등의 순으로 나타났다.

• Journal of Microbiology and Biotechnology
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• 제31권3호
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• pp.408-418
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• 2021

The diversity and plant growth-promoting ability of fungal endophytes that are associated with five halophytic plant species (Phragmites australis, Suaeda australis, Limonium tetragonum, Suaeda glauca Bunge, and Suaeda maritima) growing in the Buan salt marsh on the west coast of South Korea have been explored. About 188 fungal strains were isolated from these plant samples' roots and were then studied with the use of the internal transcribed spacer (ITS) region (ITS1-5.8S-ITS2). The endophytic fungal strains belonged to 33 genera. Alternaria (18%) and Fusarium (12.8%), of the classes Dothideomycetes and Sordariomycetes, were most rampant in the coastal salt marsh plants. There was a higher diversity in fungal endophytes that are isolated from S. glauca Bunge than in isolates from other coastal salt marsh plants. Plant growth-promoting experiments with the use of Waito-C rice seedlings show that some of the fungal strains could encourage a more efficient growth than others. Furthermore, gibberellins (GAs) GA1, GA3, and GA9 were seen in the Sa-1-4-3 isolate (Acrostalagmus luteoalbus) culture filtrate with a gas chromatography/mass spectrometry.

• Journal of Preventive Medicine and Public Health
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• 제48권5호
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• pp.231-238
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• 2015

Objectives: The present study aimed to analyze the factors that could affect the health-promoting behaviors of North Korean adolescent refugees residing in South Korea. Methods: Questions about their sociodemographic variables, subjective health status, healthy living habits, and health-promoting behaviors were asked. Results: Statistically significant differences were found in religion (t=2.30, p<0.05), having family members in South Korea (t=2.02, p<0.05), and subjective health status (t=4.96, p<0.01). Scores on health-responsible behaviors were higher with higher age (t=2.90, p<0.01) and for subjects without family or friends (t=2.43, p<0.05). Higher physical-activity behaviors were observed in males (t=3.32, p<0.01), in those with better subjective health status (t=3.46, p<0.05) and lower body mas index (t=3.48, p<0.05), and in smokers (t=3.17, p<0.01). Nutritional behaviors were higher in those who followed a religion (t=2.17, p<0.05). Spiritual growth behaviors were higher in those who followed a religion (t=4.21, p<0.001), had no family in South Korea (t=2.04, p<0.05), and had higher subjective health status (t=5.74, p<0.01). Scores on interpersonal relationships and stress-management behaviors were higher for those with higher subjective health status. A multiple regression analysis showed greater effects on health-promoting behaviors when subjective health status was better. Older people and non-smokers exhibited more health-responsible behaviors, while more physical-activity behaviors and spiritual growth activities were observed when subjective health status was better. Interpersonal relationship behaviors had positive effects on those with good subjective heath status and on non-smokers. Conclusions: Based on the results of the current study, an alternative was suggested for promoting health in North Korean adolescent refugees.

• 교통기술과정책
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• 제9권3호
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• pp.57-66
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• 2012

• 대한치주과학회:학술대회논문집
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• 대한치주과학회 1994년도 제34회 종합학술대회
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• pp.9-9
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• 1994

• Bulletin of the Korean Chemical Society
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• 제16권11호
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• pp.1128-1130
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• 1995

• 한국미생물·생명공학회지
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• 제48권1호
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• pp.38-47
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• 2020

본 연구는 토양으로부터 분리한 균주를 대상으로 식물병 방제활성 및 식물 생장촉진 활성을 확인하고자 하였다. 식물병원성 곰팡이에 대한 길항능을 통해 방제기능을 확인할 수 있었으며, 이는 siderophore 및 항생물질 생성 등에 기인되는 것으로 판단된다. 또한 ANG40의 경우에는 amylase, cellulase, xylanase와 같은 세포외 효소활성을 갖고 있음을 확인하였다. 이 외에도 질소 고정능, 인산 가용화능, siderophore 생성능 등 다양한 실험을 통해 식물 생장에 필수적인 질소, 인, 철 등을 식물이 흡수 가능한 형태로 변화시켜 식물 생장에 도움을 줄 수 있을 것으로 기대된다. 또한 6종의 분리균주는 모두 에틸렌 생성과 연관된 IAA를 생성하였으며, 그 중에서도 ANG51의 경우에는 ACC deaminase 활성도 갖고 있음을 확인하였다. 따라서, 최종 선별된 Pseudomonas geniculata ANG3, Exiguobacterium acetylicum ANG40, Burkholderia stabilis ANG51을 이용하여 식물 생장촉진 활성과 식물 병원성 곰팡이에 항진균 활성을 갖는 새로운 생물학적 제제로써 이용 가능성을 제시하였다.