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Author: Harish C. Sikka Publisher: ISBN: Category : Languages : en Pages : 86
Book Description
;Contents: Uptake and metabolism of DDT by six species of marine algae; Fate of dieldrin in selected species of marine algae; Effects, uptake and metabolism of methoxychlor in marine algae; Effects of carbaryl and 1-naphthol on growth and photosynthesis in marine algae; Metabolism of carbaryl and 1-naphthol by marine bacteria and fungi.
Author: Harish C. Sikka Publisher: ISBN: Category : Languages : en Pages : 86
Book Description
;Contents: Uptake and metabolism of DDT by six species of marine algae; Fate of dieldrin in selected species of marine algae; Effects, uptake and metabolism of methoxychlor in marine algae; Effects of carbaryl and 1-naphthol on growth and photosynthesis in marine algae; Metabolism of carbaryl and 1-naphthol by marine bacteria and fungi.
Author: Pankaj Bhatt Publisher: Frontiers Media SA ISBN: 2832550576 Category : Science Languages : en Pages : 247
Book Description
The increasing use and the continuous development of pesticides are required to maintain sufficient global food production. The pesticide residues and their biotic and abiotic breakdown products may be harmful to the environment and may leach into waterways, thus it is crucial that the interactions of pesticides with microorganisms are deeply understood at all levels. Pesticides reach the soil via direct and indirect routes. The fate of the pesticides in the soil is affected by chemical, physical and microbiological factors. Microbial degradation of pesticides in soil is possible owing to the diverse metabolic capabilities of the microorganisms present, thus indigenous microbes act as biocatalysts for the remediation of the pesticides from the environment. The research topic will cover novel insights into microbial pesticide degradation with specific attention to the microbe-pesticide interactions in soil. To date researchers have focused on the degradation of pesticides using indigenous microbes with different degradation rate. There is scant information about the degradation intermediates, metabolic pathways, enzymes and complete set of factors involved into the microbes inhabiting into the pesticides contaminated soil. Therefore this Research Topic aims to contribute to the understanding of the role of microbes in pesticide degradation in soil. Since pesticide exposure may result in stress responses in the microbial population of the soil, there is also a need to know about the impact of pesticides on the microbial cell structure, membrane transporters, cellular content, metabolic pathways and gene expression. We are interested in reports of novel metabolic pathways, expression of the key genes in response to pesticide exposure and the changes in microbial physiology caused by pesticide exposure. The removal of the pesticides from the soil requires smart microbial methods that can reduce the pesticides concentration in a short time. The development of the smart bioremediation methods includes the direct application of the potential screened microbial strains and their enzymes. The immobilized microbial strains and their enzymes can be used for the rapid removal of the toxic pesticides from the soil environment. In addition, engineering of the microbial consortia can be developed as the potential smart bioremediation tool. Papers on single isolates or microbial communities are welcome as are reports of novel genes, enzymes or metabolites that might be used as markers of soil contamination. We would especially welcome manuscripts describing the application and development of smart soil bioremediation approaches that could be beneficial for the treatment of large scale contaminated agricultural and industrial soils. The research topic is of immediate interest to scientists and policy-makers and Frontiers in Microbiology is an ideal forum for a collection of novel, high-impact reports. The following themes are welcomes but not limited to: • Novel advancements into the microbe-pesticide interactions to clean the pesticide contaminated soil • High throughput screening of the potential bacterial, fungi and algae strains for the removal of pesticides from the contaminated soil • Smart soil bioremediation using indigenous microbial cultures and their purified enzymes • Microbial enzymes a smart tool for bioremediation of the soil • Engineering of the microbial consortia for the complete pesticides removal and resource recovery
Author: Jean-Claude Bertrand Publisher: Springer ISBN: 940179118X Category : Science Languages : en Pages : 933
Book Description
This book is a treatise on microbial ecology that covers traditional and cutting-edge issues in the ecology of microbes in the biosphere. It emphasizes on study tools, microbial taxonomy and the fundamentals of microbial activities and interactions within their communities and environment as well as on the related food web dynamics and biogeochemical cycling. The work exceeds the traditional domain of microbial ecology by revisiting the evolution of cellular prokaryotes and eukaryotes and stressing the general principles of ecology. The overview of the topics, authored by more than 80 specialists, is one of the broadest in the field of environmental microbiology. The overview of the topics, authored by more than 80 specialists, is one of the broadest in the field of environmental microbiology.
Author: Harish C. Sikka Publisher: ISBN: Category : Languages : en Pages : 17
Book Description
A number of marine microorganisms including algae, bacteria, fungi and yeasts were treated for their ability to metabolize carbaryl (1-naphthyl-N-methyl-carbamate) and 1-naphthol. None of the species included in the study were able to degrade carbaryl to a significant extent. Conversion of 1-naphthol to ether-soluble and water-soluble metabolites was observed in cultures of Culcitalna achraspora, Halosphaeria mediosetigera, Humicola alopallonella, Aspergillus fumigatus, Serratia marina, Spirrillum sp. and Flavobacterium sp. The first three organisms were more effective in degrading 1-naphthol to water-soluble metabolites than the remaining species. A very small amount of carbaryl was metabolized to water-soluble metabolites by the algae Cyclotella nana and Dunaliella tertiolecta. 1-naphthol was more toxic to the algae Cyclotella and Dunaliella than the parent compound, carbaryl. Cyclotella was more sensitive to both carbaryl and 1-naphthol than Dunaliella. Treatment with .00002M carbaryl or 1-naphthol reduced photosynthetic CO2 fixation in Cyclotella. (Author).
Author: Harish C. Sikka
Author: Harish C. Sikka
Author: Stephanie Condron Prevost
Author: Pankaj Bhatt
Author: N. Balicka
Author: Jean-Claude Bertrand
Author: Harish C. Sikka
Author: Norris C. Charles
Author: 
Author: Charles, Norris C
Author: Suh-Fen Ni