|
KMID : 0545120040140040885
|
|
Journal of Microbiology and Biotechnology
2004 Volume.14 No. 4 p.885 ~ p.890
|
|
|
Occurrence of Vesicular-Arbuscular Mycorrhizal (VAM) Fungi and Their Effect on Plant Growth in Endangered Vegetations
|
|
Padmanabhan C
Jeong YJ/Thangaswamy S/Kim H
|
|
|
Abstract
|
|
|
|
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 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 VAM spores and dry matter content. When the nutrients 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 137Cs and 90Sr 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.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
  
|