• Colonisation of
numerous bacterial cells around
root surface
Enterobacter
K2
Oryza sativa
(Rice)
Davis Mingioli
(DM) medium with
500
μg/mL Cd
Phosphate,
IAA,
siderophore,
N
2 , NH
3 ,
ACCD, HCN
(MICμg/
mL)
Cd-4000
Pb-4000
As-1200
Ni-600
Hg-40
O. sativa
In vitro
PGP
experiment
in glass
beaker
• Enhancement of
germination percentage
• Growth parameters (root length,
shoot length and
root-shoot biomass) increased
significantly
• Reduction of
stress ethylene
• Elongation of
root increased by
preventing senescence
• Total chlorophyll content
increased
Pramanik
et al.
(2018b)
Enterobacter
asburiae
S2
Oryza sativa
(Rice)
Davis Mingioli
(DM) medium with
1000
μg/ml Cd
Phosphate,
IAA, N
2 ,
ACCD
(MICμg/
mL)
Cd-3500
Pb-2500
As-1050
O. sativa
Pot experiment in
growth
chamber
• Germination
percentage
increased
• Improvement in
root-shoot length,
fresh weight, dry
weight
• Significant
reduction of Cd
uptake, comparison to Cd treated
Mitra
et al.
(2018a)
(continued)
22 Beneficial Role of Plant Growth-Promoting Rhizobacteria in Bioremediation of. . .
459