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Mycorrhiza fungi shows important effect on enhancing plants' ability of absorbing water and mineral nutrition, it can improve resistance to drought, salinization and diseases, promote the growth of plant, and also can improve the tolerability of plants to the toxic pollution, conserve of soil against erosion, enhance the soil activities and the productive forces. So exploitation and utilization of...
Manganese peroxidase(MnP) was the most common lignin-modifying peroxidase produced by almost all wood-colonizing basidiomycetes causing white-rot and various soil-colonizing litter-decomposing fungi. MnP could be applied in biotechnological applications, removing of hazardous wastes or in certain organic syntheses. In the present study, some characters of the amino acid sequence of P.sordida manganese...
Basidiomycetes white-rot fungi which can secrete several extracellular enzymes, in which lignin peroxidase plays a dominant role in lignin degradation. In the present study, some characters of the amino acid sequence of P. chrysosporium lignin peroxidase were predicted and analysed with the tools of bioinformatics. These results showed that the protein was composed of 19 kinds of amino acid; the theoretical...
In the present study we reported the feasibility of extracellular biopolymer(PF-9) produced by Pseudomonas fluorescence C-9 as an alternative biosorbent to remove Ni(II) metallic ions from environmental and industrial wastewater. The ability of PF-9 to remove the Ni(II) ions was investigated by using batch biosorption procedure. The effects such as pH, dosage of biosorbent, Ni(II) initial concentration...
The study on molecular structure of Fusarium proliferatum clinically isolated can provide the basis for accurate diagnosis and treatment of F. proliferatum infection. The rDNA ITS gene of 6 strains that had been identified as Fusarium proliferatum based on morphological were cloned and sequenced. The molecule phylogenetic tree was constructed based on rDNA ITS sequences, and the 6 genus were divided...
Leaf blight is a common Camellia oleifera disease caused by Pestalotiopsis microspora. The damaged young leaves show blight symptom, resulting in yield reduction. This study was to isolate antagonistic bacteria from Camellia oleifera tissue for control of the leaf blight. Antagonistic bacteria was screened from 175 endophytic bacterias by confront culture method. The results of the study showed that...
To assess the potential applicability of bioflocculant PS-2, a bacterial extracellular polysaccharide, to wastewater treatment as a biosorbent, the biosorption of PS-2 to remove the Cu (II) ions was investigated by using batch biosorption procedure. The effects such as pH, initial metal ions concentration, biosorbent dosage on the adsorption capacities of PS-2 were studied. The optimum uptake of Cu...
Heavy metal contaminated soil problem has already become the global focus. With the increasing attention to the environment protection, scientist began to search new methods for remediation of contaminated soil. This paper mainly studied the effect of microorganism-plant combined bioremediation on contaminated soil in the industrial district, hoping to provide an effective bioremediation technique...
The orthogonal test was used to study the bactericidal capability of potassium ferrate and its influencing factors for bacteria and Escherichia coli when potassium ferrate is playing coagulation effect in treating micro-polluted water. The results showed that the order of the primary and secondary factors affecting the germicidal efficacy of potassium ferrate was oxidation time, reagent amount and...
The article introduces the authors'research of an optimum method on the cultivation conditions of a flocculant- producing Strain. Using single factor experiments and orthogonal test, the influence of temperature, PH value and rotational speed on synthesis of microbial flocculants, and optimized culture conditions were studied; 16S gene of the strain was amplified and sequenced.The sequencing was BLAST...
The paper proposes a prototype mathematical model for the interactions among filamentous bacteria, floc-forming bacteria and protozoa within completely mixed activated sludge systems, which is capable of describing the practical coexistence of three microorganisms in a generic way. The systems with substrate fluctuation and without substrate fluctuation are investigated, respectively. The results...
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