|
KMID : 0545120170270081500
|
|
Journal of Microbiology and Biotechnology
2017 Volume.27 No. 8 p.1500 ~ p.1512
|
|
|
Optimization of Siderophore Production by Bacillus sp. PZ-1 and Its Potential Enhancement of Phytoextration of Pb from Soil
|
|
Yu Sumei
Teng Chunying
Bai Xin
Liang Jinsong
Song Tao
Dong Liying
Jin Yu
Qu Juanjuan
|
|
|
Abstract
|
|
|
|
In this study, the siderophore-producing characteristics and conditions of Bacillus sp. PZ-1 were investigated and the enhancement of siderophores on Pb uptake and translocation in Brassica juncea were determined. Results of single factor experiment showed that glucose, pH, and Pb(NO3)2 could stimulate PZ-1 growth and siderophore production. The maximum siderophore production of 90.52% siderophore units was obtained by response surface methodology optimization at the glucose concentration of 21.84 g/l, pH 6.18, and Pb(NO3)2 concentration of 245.04 μmol/l. The type of siderophore was hydroxamate and its concentration in the fermentation broth amounted to 32.24 μg/ml. Results of pot experiments indicated that the siderophores enhanced B. juncea to assimilate more Pb from soil with the uptake ratio from 1.04 to 2.74, and to translocate more Pb from underground to overground with the TF values from 1.21 to 1.48. The results revealed that Bacillus sp. PZ-1 could produce abundant siderophores and might be potentially used to augment the phytoextraction of Pb from soil.
|
|
|
KEYWORD
|
|
|
Bacillus sp. PZ-1, siderophore, response surface methodology, Pb, phytoextraction
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
  
|