Alleviation of heavy metals toxicity by the application of plant growth promoting rhizobacteria and effects on wheat grown in saline sodic field

Rhizobacteria, a plant growth promoting rhizobacteria (PGPR) as beneficial microorganism which helps in defense from abiotic and abiotic stresses, colonizes in rhizosphere and played a major role in promoting plant growth and also provides enhance soil fertility. In the highly contaminated soil, the content of metal exceeds the limits of plant tolerance. It is also possible that treatment of plant with PGPR, here increasing the biomass of plant, stabilizing and the remediation of metal polluted soil. The use of rhizobacteria plays and important role in increasing the tolerance of plant towards toxic effects of heavy metals like arsenic, sulphur, mercury, chromium, cadmium, nickel, lead and copper etc. Heavy metal accumulation results in deterioration of soil fertility while PGPR helps to restore soil fertility. The process of phytoremediation has been proved to be the best way to remediate heavy metals from soil. The use of rhizobacteria with plants provides highly efficiency phytoremediation. However, there is still need to understanding the concept of microbial ecological study in rhizosphere and mechanism of detoxification of heavy metals form rhizosphere.

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Resistance of Potential Plant Growth Promoting Rhizobacteria to Heavy Metals (Ni, Cd, Co, Pb) Isolated from Polluted Areas of Hyderabad

International Journal of Current Microbiology and Applied Sciences ◽

10.20546/ijcmas.2018.708.362 ◽

2018 ◽

Vol 7 (08) ◽

pp. 3583-3591

Author(s):

M. Nissi Paul ◽

Sodimalla Triveni ◽

P.C. Latha ◽

M. Chandini Patnaik ◽

A. Manohar Rao

Keyword(s):

Heavy Metals ◽

Plant Growth ◽

Plant Growth Promoting Rhizobacteria ◽

Plant Growth Promoting ◽

Growth Promoting

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Biosorption and bioaccumulation characteristics of cadmium by plant growth-promoting rhizobacteria

RSC Advances ◽

10.1039/c8ra06270f ◽

2018 ◽

Vol 8 (54) ◽

pp. 30902-30911 ◽

Cited By ~ 11

Author(s):

Xingjie Li ◽

Dongbo Li ◽

Zhenning Yan ◽

Yansong Ao

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Plant Growth ◽

Metal Uptake ◽

Plant Growth Promoting Rhizobacteria ◽

Heavy Metal Uptake ◽

Plant Growth Promoting ◽

Growth Promoting

Plant growth-promoting rhizobacteria (PGPR) not only promote growth and heavy metal uptake by plants but are promising biosorbents for heavy metals remediation.

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THE EFFECT OF PLANT GROWTH-PROMOTING RHIZOBACTERIA ON MOBILITY OF TOXIC ELEMENTS FROM PHOSPHOGYPSUM AND IMPLICATION ON HUMAN EXPOSURE

Journal of Engineering Studies and Research ◽

10.29081/jesr.v20i2.81 ◽

2017 ◽

Vol 20 (2) ◽

Author(s):

IOANA-ADRIANA STEFANESCU

Keyword(s):

Heavy Metals ◽

Plant Growth ◽

Human Health ◽

Coupling Effect ◽

Human Health Risk ◽

Biomass Accumulation ◽

Plant Growth Promoting Rhizobacteria ◽

The Body ◽

Plant Growth Promoting ◽

Growth Promoting

This study investigated the effects of a plant growth- promoting rhizobacteria on soil treated with phosphogypsum (PG) as the mineral additive. The indigenous bacterial strain was isolated from PG polluted soil and identified as Bacillus megaterium, which is able to stimulate plant growth under heavy metals stress conditions. There were nine treated soils with three replicates: (1) control (without PG and inoculums (I) application); (2) control with inoculums (without PG application); (3) - (9) PG application (1, 2, 3, 4, 6, 8 and 10%) equivalent to 10 - 220 t ha−1. The objectives of this study consisted on monitoring the heavy metals levels (Cu, Fe, Zn, Mn) in the body of soybean (Glycine max) and evaluation of the human health risk. This work demonstrates that PG-BM30 coupling effect in the soil on seed germination, seedling growth, biomass accumulation and heavy metals bioaccumulation do not exhibit risk to human health.

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