Trends in Heavy Metals Tolerance and Uptake byPseudomonas aeruginosa

Abstract

Pseudomonas aeruginosa is considered as the most potent bacterial strain for solving heavy metals pollution problems. Pollution is the most of problems in our world which causing a lot of risks to human, animal, plant and ecosystem. Heavy metals pollution is an ever-increasing problem in developing nations. Release of heavy metals into the environment has increased in the recent years at an alarming rate. To remove heavy metals from environment, there are different methods such as physical, chemical and biological. The biological method includes microorganisms and plant which recorded high heavy metals removal, safe and low-cost method. Microorganisms remove heavy metals from environment by different mechanisms according to their types. Thus, microbes are used as potential candidates of bioremediation that can adapt quickly to the changing noxious environment and be utilized for toxic metal remediation. In bacterial uptake and tolerance to heavy metals, Pseudomonas aeruginosa recorded potential role in bioremediation of different heavy metals with high removal percentage comparison with other bacterial strains. Chapter discusses the roles and trends of Pseudomonas aeruginosa in heavy metals tolerance and uptake as potential bacterial strain.

Genomics Insights into Pseudomonas sp. CG01: An Antarctic Cadmium-Resistant Strain Capable of Biosynthesizing CdS Nanoparticles Using Methionine as S-Source

“…Cadmium is a heavy metal with no cellular role and highly toxic for most organisms. Cadmium toxicity is associated with oxidative stress and damage to different cellular biomolecules, such as lipids, proteins, and nucleic acids [ 57 , 58 , 59 , 60 , 61 ]. Pseudomonas sp.…”

“…GC01 ( Figure 4 ). czcA and czcB (Cd 2+ , Zn 2+ , and Co 2+ ), as well as czrA , czrB , and czrC (Cd 2+ , and Zn 2+ ), are members of the RND family (resistance–nodulation–cell division, TC_2.A.6.3) of heavy metal efflux, that are involved in the export of Cd +2 from the periplasm to the extracellular space [ 60 , 75 , 76 , 77 , 78 , 79 ]. The czc family is one of the best characterized RND efflux outer membrane proteins involved in Cd 2+ resistance present in many Gram-negative bacteria, including Pseudomonas [ 58 , 71 , 72 , 73 , 80 ].…”

“…In general, the analysis of the 28 Pseudomonas strains indicated the presence of at least one gene related to cadmium in each genome, and a total of thirteen genes when all genomes were considered (cadA, zntA, pbrA, cadR, czcR, czcS, czcA, czcB, czrA, czrB, czrC, fpvA, and PA0320; Figures 4 and 5). Most of these genes correspond to classic genomic determinants involved in cadmium response [60,62] that code for bivalent cation transport pumps and regulatory systems (Figure 5) [61,63,64]. Five genes associated with Cd response were determined in the genome of Pseudomonas sp.…”

A Review on the Resistance and Accumulation of Heavy Metals by Different Microbial Strains

“…Pseudomonas aeruginosa strains results in accumulation and resistance to these heavy metals. Plutonium is harmful for soil microorganism even at very low concentration and stops the growth of bacteria fungi present in soil and affects soil respiration [85].…”

Modern Trends in Uses of Different Wastes to Produce Nanoparticles and Their Environmental Applications

“…Pollution is one of the biggest problems in the world, which poses a lot of risks to humans, animals, plants, and ecosystems [57]. Nano-cellulose has a diameter usually <10 nm, which gives it many unique properties.…”