Role of Plant Growth Promoting Bacteria and Fungi in Heavy Metal Detoxification

2011 ◽  
pp. 369-388 ◽  
Author(s):  
Sema Camci Cetin ◽  
Ayten Karaca ◽  
Ridvan Kizilkaya ◽  
Oguz Can Turgay
Keyword(s):  
Heavy Metal ◽  
Plant Growth ◽  
Plant Growth Promoting Bacteria ◽  
Metal Detoxification ◽  
Heavy Metal Detoxification ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Bacteria And Fungi

scholarly journals Genomic and Physiological Investigation of Heavy Metal Resistance from Plant Endophytic Methylobacterium radiotolerans MAMP 4754, Isolated from Combretum erythrophyllum

2021 ◽  
Vol 18 (3) ◽  
pp. 997
Author(s):  
Mampolelo M. Photolo ◽  
Lungile Sitole ◽  
Vuyo Mavumengwana ◽  
Matsobane G. Tlou
Keyword(s):  
Heavy Metal ◽  
Plant Growth ◽  
Phthalate Esters ◽  
Heavy Metal Resistance ◽  
Metal Resistance ◽  
Plant Growth Promoting Bacteria ◽  
Nickel Resistance ◽  
Metal Detoxification ◽  
Plant Growth Promoting ◽  
Growth Promoting

Combretum erythrophyllum is an indigenous southern African tree species, a metal hyperaccumulator that has been used as a phytoextraction option for tailing dams in Johannesburg, South Africa. In hyperaccumulators, metal detoxification has also been linked or attributed to the activities of endophytes, and, in this regard, metal detoxification can be considered a form of endophytic behavior. Therefore, we report herein on the identification of proteins that confer heavy metal resistance, the in vitro characterization of heavy metal resistance, and the production of plant growth-promoting (PGP) volatiles by Methylobacterium radiotolerans MAMP 4754. Multigenome comparative analyses of M. radiotolerans MAMP 4754 against eight other endophytic strains led to the identification of zinc, copper, and nickel resistance proteins in the genome of this endophyte. The maximum tolerance concentration (MTC) of this strain towards these metals was also investigated. The metal-exposed cells were analyzed by transmission electron microscopy (TEM). The ethyl acetate and chloroform extracts (1:1 v/v) of heavy metal untreated M. radiotolerans MAMP 4754 were also screened for the production of PGP compounds by Gas Chromatography–Mass Spectroscopy (GC/MS). The MTC was recorded at 15 mM, 4 mM, and 12 mM for zinc, copper, and nickel, respectively. The TEM analysis showed the accumulation of metals in the intracellular environment of M. radiotolerans MAMP 4754, while the GC/MS analysis revealed several plant growth-promoting compounds, including alcohols, phthalate esters, alkenes, ketones, sulfide derivatives, phenols, and thiazoles. Our findings suggest that the genetic makeup of M. radiotolerans MAMP 4754 encodes heavy metal resistant proteins that indicate hyperaccumulator-specific endophytic behavior and the potential for application in bioremediation. The production of plant growth-promoting volatiles in pure culture by M. raditotolerans MAMP 4754 is a characteristic feature for plant growth-promoting bacteria.

Phytormediation Efficiency Increased by Using Plant Growth Promoting Bacteria (PGPB) and Chelates

2020 ◽  
pp. 85-103
Keyword(s):  
Heavy Metal ◽  
Plant Growth ◽  
Metal Contamination ◽  
Chelating Agents ◽  
Heavy Metal Contamination ◽  
Plant Growth Promoting Bacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting

In this chapter, the authors give information about the plant-growth-promoting bacteria and chelating agents removing high number of contaminants with the help of phytoremdiation technology. To the best of the authors' knowledge, this is the first chapter about heavy metal contamination in groundwater and soil removing by microbes and chelates.

Newer Approaches in Phytoremediation

2021 ◽  
pp. 1785-1808
Author(s):  
Khushboo Chaudhary ◽  
Suphiya Khan ◽  
Pankaj Kumar Saraswat
Keyword(s):  
Heavy Metals ◽  
Plant Growth ◽  
Chelating Agents ◽  
Plant Growth Promoting Bacteria ◽  
Metals Removal ◽  
Pollution Problem ◽  
The World ◽  
Plant Growth Promoting ◽  
Growth Promoting

The heavy metal pollution problem is all over the world. Plant-growth-promoting bacteria (PGPB) has transformed heavy metals present in the soil, which removes and minimizes their toxic effects. This chapter highlights the role of plant-growth-promoting bacteria, chelating agents, and nanoparticles for remediation of heavy metals; their mechanism of action; and their applications approach of hyperaccumulation. Therefore, this chapter focuses on the mechanisms by which microorganisms, chelating agents, and nanoparticles can mobilize or immobilize metals in soils and the nano-phytoremediation strategies are addressed for the improvement of phytoextraction as an innovative process for enhancement of heavy metals removal from soil.

scholarly journals Culturable Heavy Metal-Resistant and Plant Growth Promoting Bacteria in V-Ti Magnetite Mine Tailing Soil from Panzhihua, China

PLoS ONE ◽  
2014 ◽  
Vol 9 (9) ◽  
pp. e106618 ◽  
Author(s):  
Xiumei Yu ◽  
Yanmei Li ◽  
Chu Zhang ◽  
Huiying Liu ◽  
Jin Liu ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Plant Growth ◽  
Mine Tailing ◽  
Plant Growth Promoting Bacteria ◽  
Plant Growth Promoting ◽  
Growth Promoting ◽  
Heavy Metal Resistant

scholarly journals The role of Plant Growth Promoting Bacteria in improving nitrogen use efficiency for sustainable crop production: a focus on wheat

2017 ◽  
Vol 3 (3) ◽  
pp. 413-434 ◽  
Author(s):  
Nilde Antonella Di Benedetto ◽  
◽  
Maria Rosaria Corbo ◽  
Daniela Campaniello ◽  
Mariagrazia Pia Cataldi ◽  
...  
Keyword(s):  
Plant Growth ◽  
Nitrogen Use Efficiency ◽  
Crop Production ◽  
Plant Growth Promoting Bacteria ◽  
Nitrogen Use ◽  
Sustainable Crop Production ◽  
Plant Growth Promoting ◽  
Use Efficiency ◽  
Growth Promoting
Sign in / Sign up

Export Citation Format

Share Document