• 제목/요약/키워드: VAM mycorrhizae

검색결과 7건 처리시간 0.015초

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
    • /
    • 제27권4호
    • /
    • pp.178-182
    • /
    • 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.

V. A. Mycorrhizae가 미국삼의 생육에 미치는 영향 (Effects of Vesicular-Arbuscular Mycorrhizae on The Growth of American Ginseng)

  • Thomas, S.C.Li
    • Journal of Ginseng Research
    • /
    • 제19권1호
    • /
    • pp.73-76
    • /
    • 1995
  • Newly sprouted American ginseng (Panax quinquefolium L.) seedlings were transplanted to forest pots with mycorrhizae-infested soil and grown in screenhouse for 2 years. Growth patterns, mortality rate and fresh root weight were investigated. Plants in VAM soil had lower mortality rales than control. In soils infested with two species of mycorrhizal fungi (Glomu deseyicola, frappe, Bloss and Merge and G. intraradices, Schenck and Smith), 28-35% of plants produced 3-prongs in the second season and significantly increased fresh root weight by 41 to 43%.

  • PDF

Occurrence and Quantification of Vesicular-Arbuscular Mycorrhizal (VAM) Fungi in Industrial Polluted Soils

  • SELVARAJ;THANGASWAMY;PADMANABHAN CHELLAPPAN;JEONG, YU-JIN;KIM, HOON
    • Journal of Microbiology and Biotechnology
    • /
    • 제15권1호
    • /
    • pp.147-154
    • /
    • 2005
  • A survey for vesicular-arbuscular mycorrhizae (VAM) status was undertaken in three different industrially polluted sites at Uyyakondan channel of Senthanneerpuram area in Trichy, India. The soils and the effluents were acidic, and contained higher Zn (621 to 711 ppm) than the other heavy metals, such as Cu, Pb, and Ni. Eighteen plant species were collected from the rhizosphere soils, and 13 species were positive for VAM colonization. Fifteen VAM fungal species were isolated from the plant species. The number of VAM fungal spores from the soils ranged from 45 to 640 per 100 g of soil. There was a significant correlation observed between the number of spores and percentage root colonization, as exemplified by Acalypha indica (45 and 20%, respectively) and Paspalum vaginatum (640 and 98%, respectively). Hostspecific and site-specific associations were observed in site 2; particular VAM species, Gigaspora gigantea and Glomus fasciculatum, were specific to particular host plants, Phyllanthus maderaspatensis and A. indica, respectively, even though Eclipta prostrata and Physalis minima were maximally associated with 8 VAM species. G. fasciculatum was found in 11 plant species and predominant VAM species. These results led us to conclude that VAM fungi are associated with a majority of the plants in the industrial polluted sites and support the plants to survive in the acidic soils, polluted with heavy metals of the industrial effluents.

Occurrence of Vesicular-Arbuscular Mycorrhizal (VAM) Fungi and Their Effect on Plant Growth in Endangered Vegetations

  • Selvaraj, Thangaswamy;Padmanabhan, Chellappan;Jeong, Yu-Jin;Kim, Hoon
    • Journal of Microbiology and Biotechnology
    • /
    • 제14권4호
    • /
    • pp.885-890
    • /
    • 2004
  • A survey for vesicular-arbuscular mycorrhizae (VAM) occurrence was undertaken in three endangered vegetation sites in the area of Kudankulam atomic power station. Fifteen VAM fungal species were isolated from the root-zone soils of fourteen different plant species. There was a significant correlation observed between the number of spores and of percentage root colonization as exemplified by Phyllanthus niruri and Paspalum vaginatum (450, 95%; 60, 25%). Although VAM species are not known to be strictly site specific, the fact that Acaulospora elegans was observed only in site 1, Glomus pulvinatum in site 2 only, and Gl. intraradices in site 3 only, showed site-specificity in this study. To confirm the infection efficiency, two host plant species in the sites, P. niruri and Eclipta alba, were selected and inoculated in field with three selected VAM fungal spores. Gl. fasciculatum was found to be the most efficient VAM species in percentage root colonization, number of VAM spores, and dry matter content. When the nutrients in roots of P. niruri and E. alba were analyzed, there was higher uptake of K (4.2 and 3.4 times, respectively) and Ca (5.3 and 4.9 times, respectively), the analogues for $^{137}Cs$ and $^{90}Sr$, respectively. From the results, it might be concluded that VAM association helps the plants survive in a disturbed ecosystem and enhances uptake and cycling of radionuclides from the ecosystem.

VA 내생균근균, Glomus mosseae,가 뽕나무의 생장과 영양에 미치는 영향 (Responses of VA mycorrhizal Fungus, Glomus mosseae, on the Growth and Nutrition of Mulberry tree)

  • 김중채;문재곡
    • 한국잠사곤충학회지
    • /
    • 제28권1호
    • /
    • pp.1-14
    • /
    • 1986
  • VA 내생균근이 뽕나무의 생장과 뽕잎증의 양육물질, 효소에 미치는 영향을 조사하고 뽕나무에 알맞는 균근을 선발하기 위하여 전국 6개 잠업주산지 뽕밭과 2개소의 산뽕나무 자생지에서 VA 내생균근을 모집, Bio-assay를 실시하였다. 그 결과는 다음과 같다. 1. VA 내생균근을 접종한 뽕나무는 접종하지 않은 뽕나무에 비하여 황토에서는 97%의 생장촉진 효과가 있었고 Vermiculite에서는 35%의 생장억제가 있었다. 2. VA 내생균근의 형성은 인산 60ppm 수준에서 가장 왕성하고 30ppm과 480ppm에서는 억제 됐으며 Vesicle은 인산 240ppm 이상 수준에서만 형성되었다. 3. VA 내생균근에 접종된 뽕나무는 인산 60ppm 수준 이상에서 생장이 가장 왕성하였으며 균근의 형성도 가장 왕성하였으므로 가장 알맞는 인산수준은 60ppm으로 생각된다. 4. VA 내생균근은 토양 중의 Fe-bound phosphate를 가장 잘 흡수하고 Ca-ound phosphate도 일부 흡수하였으나 Al-bound phosphate와 Al-Fe occuded phosphate는 흡수하지 못하였다. 5. VA 내생균근은 뽕잎의 인산은 약 10%, 실소는 15% 증가시켰으며 탄수화물은 22%, 단백질은 15% 증가시켰다. 6. 단백질의 전기영동상은 접종하지 않은 것은 16개의 band가 나타났으나 접종한 것은 19개의 band가 나타났다. 7. VA 내생균근은 뽕잎의 Peroxidase와 Anylase zymogram pattern을 변화시켰으며 특히 Amylase zymogram은 균근을 처리하지 않은 것과 큰 차이가 있었다. peroxidase zymogram은 균근을 접종한 것은 접종하지 않은 것에 비하여 주요 band가 한 개 더 적었고 amylase zymogram은 균근을 접종하지 않은 것은 band가 한 개이고 (-)극에 가까운 곳에 나타났으며 접종한 것은 band가 2개이었으며 (+)에 가까운 곳에 나타났다. 8. 우리나라 잠업 주산단지와 산뽕나무 Gigaspora속 3종과 Glomus속 1종을 선발하였으며 Bioassary를 한 결과 Gigaspora tricalipta와 Gigaspora Calospora가 뽕나무 생육에 가장 큰 생장촉진효과가 있었다.

  • PDF

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

  • 김준태;김종균
    • 한국균학회지
    • /
    • 제20권3호
    • /
    • pp.171-182
    • /
    • 1992
  • 콩과(科)식물 주변의 토양에서 발견되는 VA-mycorrhizae를 동정(同定)하기 위하여 공주대학교 주변에 서식하는 10종(種)의 콩과(科)식물들을 대상으로 토양시료를 채취하였다. 채집된 뿌리를 염색한 결과, 10종(種)의 콩과(科)식물 모두에서 균근(菌根) 구조를 관찰할 수 있었다. VAM 포자(胞子)의 현미경적 형태와 포자벽 구조 및 부착 균사의 특징을 중심으로 포자를 동정(同定)한 결과, 4속(屬) 12종(種)의 포자를 확인하였으며 다음과 같다 ; Acaulospora denticulata, A. scrobiculata, Gigaspora margarita, Glomus australe, Gl. constrictum, Gl. convolutum, Gl. diaphanum, Gl. flavisporum, Gl. glomerulatum, Gl. manihotis, Gl. tortuosum, Sclerocystis microcarpus. 이들 중 3속(屬) 7종(種)은 국내에서 미보고된 종(種)으로 새로이 기재하는 바이다 ; A. denticulata, Gl. australe, Gl. constrictum, Gl. convolutum, Gl. diaphanum, Gl. flavisporum, S. microcarpus.

  • PDF

원예식물 및 재배식물에서 발견된 내생균근 (Vesicular-arbuscular mycorrhizal Fungi found at the horticultural and cultivated Plants)

  • 이상선;가강현;이석구;백기엽
    • 한국균학회지
    • /
    • 제19권3호
    • /
    • pp.186-202
    • /
    • 1991
  • 청주 주변에 있는 광명바이오택스에서 채취된 원예식물의 22과 36종 중에서 17종(47.2%)이 내생균근에 감염되어 있었으며, 2속 3종의 내생균근이 동정되었다 ; Acaulospora spinosa, Glomus etinucatum, G. tortusom. 이들은 주로 노천에 재배되는 일년생식물에서 포자가 관찰되었다. 한국교원대학교및 경북 칠곡군 가산면 석우동 안산 주변에서 채취된 재배식물에서는 4속 6종이 발견되었다 ; A. myriocarpa, Gigaspora deipiens, G. caledonium, G. glomerulatum, G. microcarpum, Scutellospora. calospora. 특히 잔디식물에 있어, Glomus 포자가 발견되었으나, 잔디뿌리의 내생균근 형성은 관찰할 수 없었다.

  • PDF