• Title, Summary, Keyword: Arbuscular mycorrhizae

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Growth Stimulation of Mulberry Trees in Unsterilized Soil under Field Conditions with VA Mycorrhizal Inoculation (VA내생균근이 뽕나무의 생장에 미치는 영향)

  • 김중채;최연홍;문재유;김주읍
    • Journal of Sericultural and Entomological Science
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    • v.26 no.2
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    • pp.7-10
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    • 1984
  • Mulberry Seedlings germinated and grown under green house conditions were inoculated with Glomus mosseae, Mosse and Trappe (a Kind of Vesicular arbuscular mycorrhizae) prior to outplanting into unsterilized soil. They were grown on phosphate deficient soil for 6 months after planting. Shoot length, stem diameter and leaf yield of the inoculated plants were found to be significantly greater than uninoculated ones. It was observed in foliar mineral content that the levels of N, P$_2$O$\sub$5/, CaO of the inoculated plants were higher but the level of MgO of the inoculated plants was lower than the uninoculated ones. In the mineral content of roots, it was observed that the level of P$_2$O$\sub$5/ was higher but the level of N was lower significantly in the inoculated plants than the uninoculated ones.

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Factors related to the growth of arbuscular mycorrhizal fungi in the plant roots (식물뿌리에서 Arbuscular 내생균근 균의 성장에 작용하는 요인들)

  • Lee, Sang-Sun;Eom, Ahn-Heum;Lee, Seok-Koo
    • The Korean Journal of Mycology
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    • v.22 no.2
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    • pp.160-171
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    • 1994
  • Microscopic observations of arbuscular mycorrhizae (AM) were done with the colonizations of AM and the determinations of chitin in the plant roots of Sorghum bicolor, Cassia mimosoides, Capsicum annuum and Allium fistulosum. The intercellular and intracellular hyphae, arbuscules and vesicles were microscopically observed, according to increases of colonization of AM in the roots of four plants. The growth of AM fungi appeared sigmoid with the cultivation days after inoculation. The growth of AM fungi were inversely influenced by the additions of commercial fertilizers, P

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Effect of Vesicular-Arbuscular Mycorrhizae on the Growth of Bell Pepper and Corn Seedlings (고추와 옥수수 실생의 생장에 미치는 균근의 효과)

  • Mun, Hyeong-Tae;Kim, Chong-Kyun;Choe, Du-Mun
    • The Korean Journal of Ecology
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    • v.13 no.1
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    • pp.1-8
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    • 1990
  • Effects of mycorrhizal infection on the growth of bell pepper (Capsicum annuum) and corn (Zea mays) seedlings have been studied by comparing plants grown in sterilized soil/sand mixtures to plants grown in sterilized soil/sand mixtures with topping the original non-sterile field soil. The original nonsterile field soil, which were taken from the bell pepper field, contained a high level of endmycorrhizal spores. After seven weeks, the shoot height of inoculated plants was increased by 110% in bell pepper, and 90% in corn compared with the control plants. The average above-ground biomass of inoculated plant was increased by 88% in bell pepper and 71% in corn compared with the control plants. The shoot-root ratios in bell pepper and corn were 2.7 and 1.8 for the control plants, and 4.3 and 2.7 for the treatment plants, respectively. Phosphorus level in inoculated plant was higher than that of the control plant. However, nitrogen contents were similar between the control and the treatment plants. The control plants didi not form vesicular-arbuscular mycorrhizae during the experimental period.

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Community Structures of Arbuscular Mycorrhizal Fungi in Soils and Plant Roots Inhabiting Abandoned Mines of Korea

  • Park, Hyeok;Lee, Eun-Hwa;Ka, Kang-Hyeon;Eom, Ahn-Heum
    • Mycobiology
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    • v.44 no.4
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    • pp.277-282
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    • 2016
  • In this study, we collected rhizosphere soils and root samples from a post-mining area and a natural forest area in Jecheon, Korea. We extracted spores of arbuscular mycorrhizal fungi (AMF) from rhizospheres, and then examined the sequences of 18S rDNA genes of the AMF from the collected roots of plants. We compared the AMF communities in the post-mining area and the natural forest area by sequence analysis of the AMF spores from soils and of the AMF clones from roots. Consequently, we confirmed that the structure of AMF communities varied between the post-mining area and the natural forest area and showed significant relationship with heavy metal contents in soils. These results suggest that heavy metal contamination by mining activity significantly affects the AMF community structure.

Effects of Arbuscular Mycorrhiza Inoculation and Phosphorus Application on Early Growth of Hot Pepper(Capsicum annum L.) (Arbuscular mycorrhiza의 접종방법 및 인산시용량이 고추(Capsicum annum L.)의 초기생장에 미치는 영향)

  • Park, Hyang-Mee;Kang, Hang-Won;Kang, Ui-Gum;Park, Kyeong-Bae;Lee, Sang-Sun;Song, Sung-Dahl
    • Korean Journal of Soil Science and Fertilizer
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    • v.32 no.1
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    • pp.68-75
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    • 1999
  • This study was conducted to examine the effects of Arbuscular Mycorrhizae inoculation and phosphorus application on early growth of hot pepper. Gigaspora margarita and Acaulospora spinosa were chosen for this investigation and inoculated into soils of different P levels by varying inoculation time and density. After treatment, some relevant growth responses of hot pepper were measured. Regardless of soil P levels, hot peppers treated with arbuscular mycorrhizal fungi had 5~34% more fresh weight than those untreated, but the effect of inoculation time and density was not different between two species. With decreased P levels, the infection rate and dependency of hot peppers increased. The content of P and K of AMF-inoculated hot peppers increased with increasing P levels, but the shoot to root ratio of those elements decreased. The results of this study showed that inoculation of AMF would be effective in promoting growth of hot pepper seedlings and increase transplant adaptation due in part to the resulted higher root development.

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Ecological Study on Arbuscular Mycorrhizae(AM) at Coastal Reclaimed Lands (해안(海岸) 간척지(干拓地)에서 Arbuscular Mycorrhizae(AM)에 관한 생태학적(生態學的) 연구(硏究))

  • Koh, Sung-Duk
    • The Korean Journal of Mycology
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    • v.22 no.4
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    • pp.394-409
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    • 1994
  • The symbiotic activities of arbuscular mycorrhizal fungi(AMF) such as spore density, symbiotic intensity and vesicle density, phytomasses of higher plants such as Calamagrostis epigeios, Imperata cylindria, Artemisia scoparia, Aster tripolium and Sonchus brachyotus and seasonal change of the AMF activities, electric conductivity and zinc contents in plant and soil were determined in the rhizospheres of higher plants at abandoned old coastal reclaimed lands, where constructed in 12 and 30 years ago. If plants of reclaimed land classified to salinity, symbiotic activities of AMF were high in order of obligate halophyte, facultative halophyte and glycophyte. Also, those plants classified to life form, symbiotic activities of AMF were high in order of annual, biennial and perennial plants. Seasonal variation of spore density, one of symbiotic activities showed that the plateau density maintained continuously from the end of growing season of the higher plants to next spring. For this reason, it regarded that reproduction of AMF spore would be formed in autumn, when the higher plants will be developed. Seasonal change of symbiosis intensity, other symbiotic activities, however, showed that the highest symbiosis intensity occurred in spring and summer but the lowest in autumn. In relationships among symbiotic activities, spore density was directry proportional increase of symbiosis intensity. Moreover, phytomass of higher plants also was directly proportional to increase the spore density as well as symbiosis intensity. Vesicle density, however, did not any correlation with the phytomass, spore density and symbiosis intensity. From these results, it can know that both spore density and symbiosis intensity are strongly possible to use as the measure of symbiotic activity owing to symbiosis of tho-AMF, the more absorption of zinc by the higher plants carried out the less concentration of zinc in the soil.

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Effect of Two Glomus Species Inoculations on Survival, Photosynthetic Capacity, Growth, Morphology ana Root Ginsenoside Content of Panax quinquefolius L.

  • Fournier, Anick R.;Khanizadeh, Shahrokh;Gauthier, Louis;Gosselin, Andre;Dorais, Martine
    • Journal of Ginseng Research
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    • v.27 no.4
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    • pp.178-182
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    • 2003
  • Vesicular-arbuscular mycorrhizae (VAM) fungi naturally colonise American ginseng roots and this relationship is highly beneficial to enhance plant productivity. Our goal was to determine the effect of adding two Glomus species (Glomus etuticatum, G. intraradices) on survival, photosynthetic capacity, growth, morphology and root ginsenoside content of one-year-old American ginseng plants grown in a broadleaf forest. While our study revealed that VAM inoculations significantly affected root morphology and Re ginsenoside content, the survival, photosynthetic capacity and root growth of American ginseng plants were not significantly influenced by VAM inoculations. Surface area and volume of rootlets were 16-25% higher for ginseng grown in VAM-inoculated soil compared to those grown in the control plots. Also, Re ginsenoside content was 18 % higher in YAM-inoculated roots compared to controls.

Vesicular-Arbuscular Mycorrhizal Fungi Found from the Soils of Plant Communities (식물(植物) 군락(群落)에서 VA 내생균근(內生菌根) 발견(發見))

  • Ka, Kang-Hyeon;Lee, Sang-Sun;Lee, Min-Woong
    • The Korean Journal of Mycology
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    • v.18 no.4
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    • pp.191-197
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    • 1990
  • Vesicular-arbuscular mycorrhizal fungi were isolated from the soils of three different plant communities (Cassia mimsoides var. nomame, Themeda triandra var. japonica, Miscanthus sinensis var. purpurascens). Eight azygospores or chlamydospores of VA-mycorrhizal fungi were identified (eight species of four genera), and six among them newly described in Korea (six species of two genera); Glomus aggregatum, Gl. ambisporum, Gl. geosporum, Gl. mosseae, Scutellospora coralloidea, Sc. heterogama.

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Vesicular-Arbuscular Mycorrhizal Fungi Found in the Soils around the Roots of the Leguminous Plants (콩과(科) 식물(植物) 주변(周邊)의 토양(土壤)에서 발견(發見)되는 VA-mycorrhizae)

  • Kim, Jun-Tae;Kim, Chong-Kyun
    • The Korean Journal of Mycology
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    • v.20 no.3
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    • pp.171-182
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    • 1992
  • Ten species of the leguminous plants were collected from the soils around Kongiu National University $(127^{\circ}\;08'\;41"\;E,\;36^{\circ}\;28'\;04"\;N)$. All of them were infected with VA-mycorrhizae in the root tissues, and twelve azygospores or chlamydospores of VA-mycorrhizal fungi were found and identified (twelve species of four genera); Acaulospora denticulata, A. scrobiculata, Gigaspora margarita, Glomus australe, Gl. constrictum, Gl. convolutum, Gl. diaphanum, Gl. flavisporum, Gl. glomerulatum, Gl. manihotis, Gl. tortuosum, Scleroystis microcarpus. Seven among them were not reported in Korea yet (seven species of three genera); A. denticulata, Gl. australe, Gl. constrictum, Gl. convolutum, Gl. diaphanum, Gl. flavisporum, S. microcarpus.

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Quantitative Changes of PR Proteins and Antioxidative Enzymes in Response to Glomus intraradices and Phytophthora capsici in Pepper (Capsicum annuum L.) Plants

  • Zheng, Hu-Zhe;Kim, Yong-Woong;Lee, Hyun-Jin;Park, Ro-Dong;Jung, Woo-Jin;Kim, Young-Cheol;Lee, Sang-Hyun;Kim, Tae-Hwan;Kim, Kil-Yong
    • Journal of Microbiology and Biotechnology
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    • v.14 no.3
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    • pp.553-562
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    • 2004
  • To investigate protective activity in pepper plants, which were pre-inoculated with arbuscular mycorrhizal (AM) fungi Glomus intra radices (Gi), against pathogenic strain Phytophthora capsici (Pc), pathogenesis-related (PR) proteins and antioxidant enzymes were examined. The growth of root and shoot was the highest in peppers inoculated with G. intraradices, compared with non-inoculated control plants and those challenged by the pathogen with and without mycorrhizae after nine days of infection. Mycorrhizal colonization rate was reduced by about 10% in pathogen-challenged plants, but disease pressure was reduced. The activities of PR proteins, $\beta$-1- 3-glucanase and chitinase, were increased in Pc-treated plants compared to Gi+Pc-treated plants in leaves, but those in roots were suppressed. Superoxide dismutase activity and $H_2O_2${/TEX> content in Gi+Pc and Pc-treated plants were gradually increased in leaves. However, those in roots continuously increased up to 5 days, and then decreased dramatically. Peroxidase activity in leaves and roots increased after P. capsici infection both in plants inoculated with or without G. intraradices. These results suggest that AM fungi, G. intra radices, potentially act as one of the protective agents against plant pathogens. Changes of PR proteins and antioxidative enzymes in mycorrhizae-inoculated pepper appear to be regulated differently in leaves and roots by pathogen infection.