Mapping of sugar and amino acid availability in soil around roots with bacterial sensors of sucrose and tryptophan
Article Abstract:
Exudate compounds in plants form a pattern of availability along the roots, as shown by an experiment using Erwinia herbicola variants as biosensors. Results revealed that concentrations of sucrose and tryptophan are more pronounced in the rhizosphere region. The upper-most part of the root exhibited high concentrations of trytophan, while the lower portion was marked with high sucrose availability. High levels of amino acid concentrations were also observed along the mature sections of roots.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 1999
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Redox fluctuation structures microbial communities in a wet tropical soil
Article Abstract:
Tropical soils under four treatments that include anaerobic, 12-hoxic/anoxic fluctuations, and 4-day oxic/anoxic fluctuation are incubated to determine effects of fluctuating oxygen regimens. Results reveal that this soil's indigenous bacteria are highly adapted to fluctuating redox regimens and generally possess physiological tolerance mechanisms, which allow them to withstand unfavorable redox periods.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 2005
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Biotransformation of 1, 2, 3- Tri- and 1, 2, 3, 4, 7, 8-hexachlorodibenzo-p-dioxin by Sphingomonas wittichii strain RW1
Article Abstract:
A study was conducted on the anaerobic bacterial catabolism of the ubiquitous toxic diaryl ether pollutant 1,2,3,4,7,8-hexachlorodibenzo-p-dioxin by the Sphingomonas wittichii strain RW1. It was observed that the 3,4,5-trichlorocatechol is obtained by catalyzing the 1,2,3-trichlorodibenzo-p-doxin strain without attacking the 2,3,7-trichlorodibenzo-p-dioxin.
Publication Name: Applied and Environmental Microbiology
Subject: Biological sciences
ISSN: 0099-2240
Year: 2006
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- Abstracts: Effect of sheep urine deposition of the bacterial community structure in an acidic upland grassland soil. Counting the uncountable: statistical approaches to estimating microbial diversity
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