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Isolation and Degraded Effect of DDVP-degrading Bacteria in Soil of Pear Orchards(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2014年20期
Page:
164-168
Research Field:
Publishing date:

Info

Title:
Isolation and Degraded Effect of DDVP-degrading Bacteria in Soil of Pear Orchards
Author(s):
YANG Rui-hong 1; 2; SONG Bin1; LU Yun1; SHI Chong2; WANG Chun-li2
1.Science Education Branch，Xinjiang Education Institute，Urumqi，Xinjiang 840043；
2.College of Grassland and Environment Sciences，Xinjiang Agriculture University，Urumqi，Xinjiang 830052
Keywords:
pear orchard; soil; biodegradation; DDVP; soil bacteria
PACS:
S 661.206+.1
DOI:
-
Abstract:
18 strains of bacteria were isolated from the pear orchards soils in southern Xinjiang，which could degrade DDVP (effective constituent of Dichlorvos agent) habituated culture and morphologic observation were adopted,and blasted 16S rDNA sequence in NCBI database.The results showed that those strains were identified as 4 groups，14 strains werePseudomonadales sp.，4 strains were Microbacterium sp.，1 strain was Bacillus spp.and 1 strain was Agrobacterium sp., Pseudomonadales sp.was dominant group.In degraded DDVP experiments，compared with pure DDVP，the degradation effect of dichlorvos was lower.Mixture the 4 strains with same proportion could enhance the degradation effect of dichlorvos，which may be due to every strains’ different roles in the complex degrading process of organic phosphorus.After the dichlorvos degradation，the percentage of each strain of mixture was significantly changed.Pseudomonadales sp.was still dominant species.This study would provide strong support for further study of degraded mechanism.

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Last Update: 2014-11-21