METCALFE, AC, Martin KRSEK, GW GOODAY, JI PROSSER and EMH WELLINGTON. Molecular analysis of a bacterial chitinolytic community in an upland pasture. Applied and Environmental Microbiology. WASHINGTON: AMER SOC MICROBIOLOGY, 2002, vol. 68, No 10, p. 5042-5050. ISSN 0099-2240. Available from: https://dx.doi.org/10.1128/AEM.68.10.5042-5050.2002.
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Basic information
Original name Molecular analysis of a bacterial chitinolytic community in an upland pasture
Authors METCALFE, AC, Martin KRSEK, GW GOODAY, JI PROSSER and EMH WELLINGTON.
Edition Applied and Environmental Microbiology, WASHINGTON, AMER SOC MICROBIOLOGY, 2002, 0099-2240.
Other information
Original language English
Type of outcome Article in a journal
Confidentiality degree is not subject to a state or trade secret
Impact factor Impact factor: 3.691
Doi http://dx.doi.org/10.1128/AEM.68.10.5042-5050.2002
UT WoS 000178380900046
Changed by Changed by: doc. Ing. Martin Krsek, CSc., MSc, učo 243816. Changed: 8/1/2016 11:11.
Abstract
The effects of agricultural-improvement treatments on the chitinolytic activity and diversity of a microbial community were investigated within an upland pasture. The treatments of interest were lime and treated sewage sludge, both commonly applied to pasture land to improve fertility. Burial of chitin-containing litter bags at the field site resulted in enrichment of bacteria according to 16S rRNA fingerprinting. Chitinolytic-activity measurements showed that the highest activity occurred in those bags recovered from sludge-amended plots, which correlated well with increased counts of actinobacteria in samples from these chitin bags. Our findings suggest that sewage sludge increases the fertility of the soil in terms of chitinase activity. Ten clone libraries were constructed from family 18 subgroup A chitinases, PCR amplified from litter bags buried in soil in July 2000 or in September 2000, in a separate study. Analysis of these libraries by restriction fragment length polymorphism and sequencing showed that they were dominated by actinobacterium-like chitinase sequences. This suggests that actinobacteria have an important chitinolytic function in this soil ecosystem. Our findings showed that sludge application increased chitinolytic activity but decreased the diversity of chitinases present.
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