Table 22.2
(continued)
PGPR
Associated crop
Media
a
PGP traits
b
MIC
c
/MBC/
MTC/MRL/
Highest
tolerance
Plant growth
promotion
study
performed on
(plant)
Mode of
study
Improvements in
crops after PGPR
inoculation
Reference
un-inoculated
seedlings
• Reduction of
oxidative stress,
stress ethylene
Klebsiella
michiganensis
S8
Oryza sativa
(Rice)
Davis Mingioli
(DM) medium
supplemented with
1000
μg/ml Cd
Phosphate,
IAA, N
2 ,
ACCD
(MICμg/
mL)
Cd- 3500
Pb- 3000
As- 1000
O. sativa
In vitro
PGP
experiment
in glass
beaker
• Revealed cadmium elimination
proficiency
• Good effect in
seed germination
percentage
• Growth parameters (root-shoot
length, fresh
weight, dry
weight) improved
• Enhanced chlorophyll a, b and
total chlorophyll
content
Mitra
et al.
(2018b)
Klebsiella
pneumoniae
K5
Oryza sativa
(Rice)
Davis Mingioli
(DM) medium
supplemented with
Cd
2+
(100–1000
μg/
mL)
Phosphate,
IAA, N
2 ,
ACCD, NH
3 ,
Siderophore
(MIC—μg/
mL)
Cd-4000
Pb-4000
As-1500
O. sativa
In vitro
PGP
experiment,
In vivo
root
colonisation
study
• Enhanced germination percentage, root-shoot
length, root-shoot
dry weight, seedling vigor index
• Improved
Pramanik
et al.
(2017)
460
K. Pramanik et al.