Soil Microorganisms and Nematodes for Bioremediation and Amelioration

19

TABLE 1.3 Role of PGPR in Bioremediation of Heavy Metals

Heavy Metal Plant Species

Microorganisms

Growth Condition

Mechanism of Remediation

References

Fe3+

Pennisetum

glaucum and

Sorghum bicolor

Fungi (Glomus, Acaulospora,

and Scutellospora) and PGPR

(Streptomyces, Azotobacter,

Pseudomonas, and Paenibacillus)

association

Pot experiment

Increased Fe uptake by plants

through siderophore formation

Mishra et al.

(2016)

Cr5+ and Cd2+ Lepidium sativum

Azotobacter sp.

Lab experiment

Stimulated plant growth and

enhanced tolerance to heavy

metals

Sobariu et

al. (2017)

Cd

Chrysopogon

zizanioides

Serratia marcescens SNB6 fixed

with biochar

Pot experiment

Enhanced the Cd content and

bioaccumulation factor of the

plant

Wu et al.

(2019)

Pb, Cd, and

Ni

Zea mays

Pseudomonas sp., Pseudomonas

fluorescence, and Bacillus cereus

with Ag-nanoparticles

Pot experiment

Solubilization of insoluble

bound phosphate and plant

growth promotion

Khan &

Bano (2016)

Zn and Pb

None

Biofilm of Pseudomonas

aeruginosa (P8) and three strains

of P. fluorescens (P4, P9, P10)

Culture media

Immobilization of heavy

metals from the solution

Oladipo et

al. (2018)

Cd

Oryza sativa

Enterobacter aerogenes K6

Pot experiment

Reduced Cd uptake and

oxidative stress through IAA

production, P solubilization,

ACCD activity

Pramanik et

al. (2018)

As

Oryza sativa

One strain of Pseudomonas sp.

(S6) and two strains of Bacillus

sp. (S7 and S10)

Green house and

field condition

Promoted plant growth and

reduced As uptake

AW et al.

(2020)

Note: ACCD: 1-aminocyclopropane-1-carboxylate deaminase.