|
KMID : 0545120090190111431
|
|
Journal of Microbiology and Biotechnology
2009 Volume.19 No. 11 p.1431 ~ p.1438
|
|
|
Isolation and Characterization of a Plant Growth-Promoting Rhizobacterium, Serratia sp. SY5
|
|
Koo So-Yeon
Cho Kyung-Suk
|
|
|
Abstract
|
|
|
|
The role of plant growth-promoting rhizobacteria (PGPR) in the phytoremediation of heavy-metal-contaminated soils is important in overcoming its limitations for field application. A plant growth-promoting rhizobacterium, Serratia sp. SY5, was isolated from the rhizoplane of barnyard grass (Echinochloa crus-galli) grown in petroleum and heavy-metal-contaminated soil. This isolate has shown capacities for indole acetic acid production and siderophores synthesis. Compared with a non-inoculated control, the radicular root growth of Zea mays seedlings inoculated with SY5 can be increased by 27- or 15.4-fold in the presence of 15 mg-Cd/l or 15 mg-Cu/l, respectively. The results from hydroponic cultures showed that inoculation of Serratia sp. SY5 had a favorable influence on the initial shoot growth and biomass of Zea mays under noncontaminated conditions. However, under Cd-contaminated conditions, the inoculation of SY5 significantly increased the root biomass of Zea mays. These results indicate that Serratia sp. SY5 can serve as a promising microbial inoculant for increased plant growth in heavy-metal-contaminated soils to improve the phytoremediation efficiency.
|
|
|
KEYWORD
|
|
|
Plant growth-promoting rhizobacteria (PGPR), phytoremediation, rhizoremediation, Serratia sp, heavy metal
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
  
|