20
Table 2.3 Microbially assisted bioremediation for the restoration of degraded land
Sample no. Microbial species
Functional attributes
Experimental setup
Plant rhizosphere
References
1
Pseudomonas
aeruginosa
Bacteria produces siderophores applicable in
Cr and Pb accumulation in maize shoot; can
be used for contaminated land reclamation
Pot experiment
Zea mays
L. ‘Benicia’
2
Sinorhizobium
sp.
Pb002
Helps in Pb phytoextraction in combination
with Triton X 100 and enhances plant
biomass
Microcosms with 200
g soil (dw) per pot
Brassica juncea
3
Burkholderia
sp. D54 PGPR helps in Cs-contaminated land
restoration
Pot experiment
Phytolacca americana
Linn. and Amaranthus
cruentus
L.
4
Burkholderia cepacia
Translocation of Cd and Zn to shoot
Under OTC,
hydroponic
experiment
Sedum alfredii
Braud et al.
(2009)
5
Azospirillum lipoferum
strains, Azospirillum
brasiliense
strain
SR80
A PGPR used for crude oil remediation,
removes 56.5% of contaminant (with 1%
addition) over 14 days in malate-based
media; promotes root growth of wheat
In vitro steel grid in
0.25 l chamber
Triticum aestivum
L.
de Gregorio et al.
(2006)
6
Mesorhizobium
huakuii
subsp. rengei
B3
Helps in Cd remediation and has PGPR
activity; Arabidopsis thaliana
gene for
phytochelatin synthase cloned in
Mesorhizobium
accumulated >35 nmol
concentration of Cd
2+
/mg
In vitro study
Astragalus sinicus
Sriprang et al.
(2003)
7
Kluyvera ascorbata
SUD165, 165/26,
SUD165/26
Remediates Ni-, Pb-contaminated land,
produces Zn-siderophore for plant biomass
promotion activity
Pot experiments
Tomato (Solanum
lycopersicum),
canola,
and Indian mustard
(Brassica)
Burd et al. (2000)
8
Rhizobium galegae
Bioremediates benzene-, toluene-, and
xylene-contaminated soil, enhances plant
growth
In vitro and under
growth chambers
Galega orientalis
Suominen et al.
(2000)
2 Belowground Microbial Communities: Key Players for Soil and Environmental…