Abstract:
:Conjugal transfer of a derivative of the RP4 plasmid between Pseudomonas fluorescens AS12 and Serratia plymuthica RF7 was compared in the rhizosphere of pea, wheat, and barley and related to the metabolic activity of the bacteria. To obtain a reliable measure of transfer, which allowed comparison of results between experiments, mathematical mass-action models were used to determine plasmid intrinsic kinetic coefficients. The data showed that not only were the rhizospheres highly conducive of transfer, with rates up to six orders of magnitude higher than in bulk soil, but differences between rhizospheres were also observed. Highest intrinsic kinetic coefficients were found in the pea rhizosphere (1.1-4.1 x 10-11), followed by the barley rhizosphere (2.4-7.2 x 10-12) and the wheat rhizosphere (2.2-2.9 x 10-13). It was further shown that the metabolic activity of the cells in the rhizosphere of the three plants was not significantly different, and that activity and transfer were not correlated. Thus, the data demonstrated species specific rhizosphere effects on the conjugal transfer process that could not be attributed to different metabolic activities of the bacteria.
journal_name
Microb Ecoljournal_title
Microbial ecologyauthors
Schwaner NE,Kroer Ndoi
10.1007/s00248-001-0001-4keywords:
subject
Has Abstractpub_date
2001-10-01 00:00:00pages
458-465issue
3eissn
0095-3628issn
1432-184Xjournal_volume
42pub_type
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journal_title:Microbial ecology
pub_type: 杂志文章
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journal_title:Microbial ecology
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journal_title:Microbial ecology
pub_type: 杂志文章
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pub_type: 杂志文章
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journal_title:Microbial ecology
pub_type: 杂志文章
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更新日期:1988-07-01 00:00:00
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journal_title:Microbial ecology
pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:2007-02-01 00:00:00
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pub_type: 杂志文章
doi:10.1007/s00248-017-0967-1
更新日期:2017-10-01 00:00:00
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journal_title:Microbial ecology
pub_type: 杂志文章
doi:10.1007/BF02010599
更新日期:1985-09-01 00:00:00
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pub_type: 杂志文章
doi:10.1007/s00248-017-0930-1
更新日期:2017-07-01 00:00:00
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pub_type: 杂志文章
doi:10.1007/s00248-006-9033-0
更新日期:2006-08-01 00:00:00
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pub_type: 杂志文章
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更新日期:1982-10-01 00:00:00
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journal_title:Microbial ecology
pub_type: 杂志文章
doi:10.1007/s00248-016-0735-7
更新日期:2016-05-01 00:00:00
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journal_title:Microbial ecology
pub_type: 杂志文章
doi:10.1007/BF00170105
更新日期:1996-07-01 00:00:00
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pub_type: 杂志文章
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更新日期:1981-12-01 00:00:00
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pub_type: 杂志文章
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更新日期:2004-11-01 00:00:00
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pub_type: 杂志文章
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更新日期:2007-08-01 00:00:00
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pub_type: 杂志文章
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更新日期:2009-04-01 00:00:00
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更新日期:2012-10-01 00:00:00
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pub_type: 杂志文章
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更新日期:1982-06-01 00:00:00
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pub_type: 杂志文章
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更新日期:1986-03-01 00:00:00
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更新日期:1990-05-01 00:00:00
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更新日期:2021-01-03 00:00:00