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Analysis of Community Level Physiological Profiles in the Rhizosphere of Brassica rapa subsp. pekinensis  

Jung, Se-Ra (Graduate School of Public Health and Biotechnology, Chungnam National University)
Kim, Seung-Bum (Department of Biological Sciences, Chungnam National University)
Publication Information
Korean Journal of Environmental Biology / v.26, no.1, 2008 , pp. 42-46 More about this Journal
Abstract
The community size of culturable heterotrophic bacteria and community level physiological profiles (CLPP) in the rhizosphere of Brassica rapa subsp. pekinensis (Chinese cabbage) were analyzed in two different sites. The average community size of culturable heterotrophic bacteria ranged between $2.65\times10^6CFU\;g^{-1}$ soil (Suwon) and $3.75\times10^6CFU\;g^{-1}$ soil (Yesan), whereas those of bulk soils ranged between $2.45\times10^6CFU\;g^{-1}$ soil (Suwon) and $2.97\times10^6CFU\;g^{-1}$ soil (Yesan). The average functional richness of Suwon rhizoshpere was 90.8, whereas that of Yesan rhizosphere was 154.1. High level of correlation was found between the community size and functional richness. The most actively utilized substrates in both rhizospheres were adonitol, L-asparagine, D-gluconic acid, L-glutamic acid and D-galacturonic acid. Clear differences were seen in the utilization patterns between the two sites. Differences were also observed for the patterns of bulk soils between the two sites, although D-raffinose and D-mannose were found as the commonly utilized substrates.
Keywords
Brassica rapa subsp. pekinensis; rhizosphere; viable count; community level physiological profile;
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Times Cited By KSCI : 2  (Citation Analysis)
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