Abstract：
:Rhizoremediation has been suggested as an attractive bioremediation strategy for the effective breakdown of pollutants in soil. The presence of plant root exudates such as organic acids, sugars, and amino acids that may serve as carbon sources or biosynthetic building blocks and the limited bioavailability of iron may influence the degradation of pollutants in the rhizosphere. To test the effect of such compounds on hydrocarbon degradation, trace concentrations of yeast extract or mixtures of organic acids and amino acids were added to continuous cultures of Pseudomonas putida mt2 and P. putida WCS358 (TOL) growing on toluene. By addition of these compounds increased growth yields and higher specific growth rates on toluene were obtained. The effects of iron limitation on the substrate utilization pattern of both strains were tested by growing the strains on a mixture of toluene and the readily degradable carbon source citrate while the iron concentration was varied. Simultaneous use of both substrates under carbon-limited as well as iron-limited conditions was observed. Growth yields were less reduced and iron requirement was lower during iron-limited growth in the toluene + citrate grown cultures compared to cultures in which toluene was used as the sole carbon source. The kinetic properties of the cells for toluene degradation were less hampered by the lack of iron when citrate was used as an additional carbon source. The results indicate that the availability of low concentrations of natural organic compounds, such as produced in the rhizosphere, may positively influence the degradative performance of hydrocarbon-degrading bacteria.
journal_name
Microb Ecoljournal_title
Microbial ecologyauthors
Dinkla IJ,Janssen DBdoi
10.1007/s00248-002-2023-ykeywords:
subject
Has Abstractpub_date
2003-01-01 00:00:00pages
97-107issue
1eissn
0095-3628issn
1432-184Xjournal_volume
45pub_type
杂志文章abstract：:We studied the relationship between testate amoebae (Protozoa) communities and the depth to the water table (DWT), pH, conductivity, and microhabitat type in Sphagnum dominated peatlands of north-western Poland and built predictive (transfer function) models for inferring DWT and pH based on the testate amoebae commun...
journal_title：Microbial ecology
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doi：10.1007/s00248-004-0105-8
更新日期：2005-07-01 00:00:00
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pub_type： 杂志文章
doi：10.1007/BF02011463
更新日期：1982-06-01 00:00:00
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journal_title：Microbial ecology
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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doi：10.1007/s00248-012-0062-6
更新日期：2012-10-01 00:00:00
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journal_title：Microbial ecology
pub_type： 杂志文章
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更新日期：2013-01-01 00:00:00
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doi：10.1007/s00248-020-01666-8
更新日期：2021-01-03 00:00:00
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pub_type： 杂志文章
doi：10.1007/BF00172569
更新日期：1995-09-01 00:00:00
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doi：10.1007/s00248-013-0360-7
更新日期：2014-04-01 00:00:00
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pub_type： 杂志文章
doi：10.1007/s00248-016-0901-y
更新日期：2017-05-01 00:00:00
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pub_type： 杂志文章
doi：10.1007/s00248-015-0637-0
更新日期：2015-11-01 00:00:00
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journal_title：Microbial ecology
pub_type： 杂志文章,meta分析
doi：10.1007/s00248-016-0795-8
更新日期：2016-08-01 00:00:00
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journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-014-0393-6
更新日期：2014-05-01 00:00:00
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journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-008-9446-z
更新日期：2009-04-01 00:00:00
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journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/s00248-006-9089-x
更新日期：2006-10-01 00:00:00
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journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF00166823
更新日期：1994-09-01 00:00:00
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journal_title：Microbial ecology
pub_type： 杂志文章
doi：10.1007/BF02010479
更新日期：1981-03-01 00:00:00
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更新日期：2016-08-01 00:00:00
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更新日期：2008-08-01 00:00:00
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更新日期：2001-02-01 00:00:00
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更新日期：2021-01-18 00:00:00
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更新日期：2014-01-01 00:00:00
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更新日期：1985-03-01 00:00:00
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更新日期：2015-05-01 00:00:00
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更新日期：1985-06-01 00:00:00
