Impact of long-term application of industrial wastewater on the emergence of resistance traits in Azotobacter chroococcum isolated from rhizospheric soil

Aleem, Asma

doi:10.1016/s0960-8524(02)00134-7

Cited by 137 publications

(87 citation statements)

References 26 publications

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“…These results indicated that the percentage of resistance bacterial isolates to multiple heavy metals decrease with the increasing of metal combination. Similar observations have been reported Appanna et al, 1996;Malik and Jaiswal, 2000;Aleem et al, 2003). Other results reported that the Majority of bacteria isolated from wastewatertreated soil showed multiple metal resistances .…”

Section: Discussionsupporting

confidence: 88%

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Isolation, characterization and application of bacterial population from agricultural soil at Sohag Province, Egypt

Bahig¹,

Aly²,

Abdelouahed³

et al. 2008

MJM

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Forty soil samples of agriculture soil were collected from two different sites in Sohag province, Egypt, during hot and cold seasons. Twenty samples were from soil irrigated with canal water (site A) and twenty samples were from soil irrigated with wastewater (site B). This study aimed to compare the incidence of plasmids in bacteria isolated from soil and to investigate the occurrence of metal and antibiotic resistance bacteria, and consequently to select the potential application of these bacteria in bioremediation. The total bacterial count (CFU/gm) in site (B) was higher than that in site (A). Moreover, the CFU values in summer were higher than those values in winter at both sites. for plasmid-possessed bacteria were determined and the highest MICs were 1200 g/mL for lead, 800 g/mL for both Cobalt and Arsenate, 1200 g/mL for Nickel, 1000 g/ml for Copper and less than 600 g/mL for other metals. Bacterial isolates from both sites A and B showed multiple heavy metal resistance. A total of 337 bacterial isolates contained plasmids and the incidence of plasmids was approximately 25-50% higher in bacteria isolated from site (B) than that from site (A). These isolates were resistance to different antibiotics. Approximately, 61% of the bacterial isolates were able to assimilate insecticide, carbaryl, as a sole source of carbon and energy. However, the Citrobacter AA101 showed the best growth on carbaryl.

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Section: Discussionsupporting

confidence: 88%

“…Other results reported that the Majority of bacteria isolated from wastewatertreated soil showed multiple metal resistances . Moreover, previous results found that 33% of the bacterial isolates were resistant to the combination of four metals and 13.8% were resistant to six metals at a time (Aleem et al, 2003).…”

Section: Discussionmentioning

confidence: 87%

Isolation, characterization and application of bacterial population from agricultural soil at Sohag Province, Egypt

Bahig¹,

Aly²,

Abdelouahed³

et al. 2008

MJM

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“…This is largely attributed to the finding that microbial populations often establish some sort of positive cooperation with the host plant system. For example, soil pollution with heavy metals could lead to the appearance of heavy-metal resistant rhizobateria in the soil of industrial regions (Aleem et al, 2003). It was revealed that a high proportion of metal resistant bacteria persist in the rhizosphere of the hyperaccumulators Thalaspi caerulescens (Delorme et al, 2001) and Alyssum bertolonii (Mengoni et al, 2001) or Alyssum murale (Abou-Shanab et al, 2003a) grown in soil contaminated with Zn and Ni or Ni, respectively.…”

Section: Plant-growthmentioning

confidence: 99%

Role of soil rhizobacteria in phytoremediation of heavy metal contaminated soils

Jing

2007

J. Zhejiang Univ. - Sci. B

397

159

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Heavy metal pollution of soil is a significant environmental problem and has its negative impact on human health and agriculture. Rhizosphere, as an important interface of soil and plant, plays a significant role in phytoremediation of contaminated soil by heavy metals, in which, microbial populations are known to affect heavy metal mobility and availability to the plant through release of chelating agents, acidification, phosphate solubilization and redox changes, and therefore, have potential to enhance phytoremediation processes. Phytoremediation strategies with appropriate heavy metal-adapted rhizobacteria have received more and more attention. This article paper reviews some recent advances in effect and significance of rhizobacteria in phytoremediation of heavy metal contaminated soils. There is also a need to improve our understanding of the mechanisms involved in the transfer and mobilization of heavy metals by rhizobacteria and to conduct research on the selection of microbial isolates from rhizosphere of plants growing on heavy metal contaminated soils for specific restoration programmes.

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“…At high concentrations, heavy metal ions react to form toxic compounds in cells (Nies 1999, Choudhury andSpain 2003). Another major problem with metals is their persistence as they tend to persist indefinitely in the food chain (Gupta et al 2000, Aleem et al, 2003. The conventional treatment procedures used for removal of metals are uneconomical (Say et al, 2001).…”

Section: Effect Of CD On Shoot N P and K Contentmentioning

confidence: 99%

Role of Trichoderma and Sinorhizobium Strains for Improving Growth and Nutritional Status of Alfalfa under Cd Stress

Shwerif¹

2018

IJEAB

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Impact of long-term application of industrial wastewater on the emergence of resistance traits in Azotobacter chroococcum isolated from rhizospheric soil

Cited by 137 publications

References 26 publications

Isolation, characterization and application of bacterial population from agricultural soil at Sohag Province, Egypt

Isolation, characterization and application of bacterial population from agricultural soil at Sohag Province, Egypt

Role of soil rhizobacteria in phytoremediation of heavy metal contaminated soils

Role of Trichoderma and Sinorhizobium Strains for Improving Growth and Nutritional Status of Alfalfa under Cd Stress

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