Abstract:
:A modification of the Adler capillary assay was used to evaluate the chemotactic responses of several denitrifiers to nitrate and nitrite. Strong positive chemotaxis was observed to NO(3) and NO(2) by soil isolates of Pseudomonas aeruginosa, Pseudomonas fluorescens, and Pseudomonas stutzeri, with the peak response occurring at 10 M for both attractants. In addition, a strong chemoattraction to serine (peak response at 10 M), tryptone, and a soil extract, but not to NH(4), was observed for all denitrifiers tested. Chemotaxis was not dependent on a previous growth on NO(3), NO(2), or a soil extract, and the chemoattraction to NO(3) occurred when the bacteria were grown aerobically or anaerobically. However, the best response to NO(3) was usually observed when the cells were grown aerobically with 10 mM NO(3) in the growth medium. Capillary tubes containing 103 M NO(3) submerged into soil-water mixtures elicited a significant chemotactic response to NO(3) by the indigenous soil microflora, the majority of which were Pseudomonas spp. A chemotactic strain of P. fluorescens also was shown to survive significantly better in aerobic and anaerobic soils than was a nonmotile strain of the same species. Both strains had equal growth rates in liquid cultures. Thus, chemotaxis may be one mechanism by which denitrifiers successfully compete for available NO(3) and NO(2), and which may facilitate the survival of naturally occurring populations of some denitrifiers.
journal_name
Appl Environ Microbioljournal_title
Applied and environmental microbiologyauthors
Kennedy MJ,Lawless JGdoi
10.1128/AEM.49.1.109-114.1985keywords:
subject
Has Abstractpub_date
1985-01-01 00:00:00pages
109-14issue
1eissn
0099-2240issn
1098-5336journal_volume
49pub_type
杂志文章abstract::The 10-mer primer OPM-01 (5'-GTT GGT GGC T-3') was used to generate random amplification of polymorphic DNA (RAPD) profiles by polymerase chain reaction for 91 strains of Listeria monocytogenes from raw milk, food, and veterinary, medical, and food-environmental sources. The profiles obtained contained 1 to 10 bands w...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.59.9.3117-3119.1993
更新日期:1993-09-01 00:00:00
abstract::Expression of genes encoding polyamine transporters from plasmids and polyamine supplements increased furfural tolerance (growth and ethanol production) in ethanologenic Escherichia coli LY180 (in AM1 mineral salts medium containing xylose). This represents a new approach to increase furfural tolerance and may be usef...
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pub_type: 杂志文章
doi:10.1128/AEM.01913-14
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doi:10.1128/AEM.02225-06
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00929-15
更新日期:2015-09-01 00:00:00
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journal_title:Applied and environmental microbiology
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doi:10.1128/AEM.51.3.493-497.1986
更新日期:1986-03-01 00:00:00
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doi:10.1128/aem.69.5.2794-2799.2003
更新日期:2003-05-01 00:00:00
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journal_title:Applied and environmental microbiology
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doi:10.1128/AEM.48.2.324-326.1984
更新日期:1984-08-01 00:00:00
abstract::Application of a mycorrhizal inoculum could be one way to increase the yield of rice plants and reduce the application of fertilizer. We therefore studied arbuscular mycorrhizal fungi (AMF) in the roots of wetland rice (Oryza sativa L.) collected at the seedling, tillering, heading, and ripening stages in four paddy w...
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pub_type: 杂志文章
doi:10.1128/AEM.03769-14
更新日期:2015-04-01 00:00:00
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journal_title:Applied and environmental microbiology
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doi:10.1128/AEM.42.3.427-432.1981
更新日期:1981-09-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.47.1.144-150.1984
更新日期:1984-01-01 00:00:00
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更新日期:2015-08-15 00:00:00
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更新日期:2009-07-01 00:00:00
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journal_title:Applied and environmental microbiology
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doi:10.1128/aem.67.10.4662-4670.2001
更新日期:2001-10-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.60.3.1044-1047.1994
更新日期:1994-03-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.55.3.656-660.1989
更新日期:1989-03-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.54.3.688-692.1988
更新日期:1988-03-01 00:00:00
abstract::Vibrio parahaemolyticus and Vibrio vulnificus, which are native to estuaries globally, are agents of seafood-borne or wound infections, both potentially fatal. Like all vibrios autochthonous to coastal regions, their abundance varies with changes in environmental parameters. Sea surface temperature (SST), sea surface ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
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更新日期:2012-10-01 00:00:00
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journal_title:Applied and environmental microbiology
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.61.6.2093-2098.1995
更新日期:1995-06-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.55.6.1375-1379.1989
更新日期:1989-06-01 00:00:00
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journal_title:Applied and environmental microbiology
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.00751-07
更新日期:2007-08-01 00:00:00
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journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.59.7.2317-2319.1993
更新日期:1993-07-01 00:00:00
abstract::In various sediments in which Fe(III) reduction was the terminal electron-accepting process, [C]glucose was fermented to C-fatty acids in a manner similar to that observed in methanogenic sediments. These results are consistent with the hypothesis that, in Fe(III)-reducing sediments, fermentable substrates are oxidize...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.55.12.3234-3236.1989
更新日期:1989-12-01 00:00:00
abstract::A device for sampling at depths of up to 6,000 m is described in which 3 liters of seawater is concentrated over a Nucleopore filter to about 13 ml and retrieved under in situ pressure and temperature. Subsamples can be withdrawn into transfer units that are equipped with individual gas accumulators for preventing los...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.33.3.642-646.1977
更新日期:1977-03-01 00:00:00
abstract::Pediocin PA-1 is an antimicrobial peptide (called bacteriocin) that shows inhibitory activity against the food-borne pathogen Listeria monocytogenes. To elucidate which residue(s) is responsible for this function, the antimicrobial activities of pediocin PA-1 mutants were evaluated and compared. Each of the 44 native ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.72.2.1141-1147.2006
更新日期:2006-02-01 00:00:00
abstract::An aseptic vacuum extraction technique was used to obtain xylem fluid from the roots of rough lemon (Citrus jambhiri Lush.) rootstock of Florida citrus trees. Bacteria were consistently isolated from vascular fluid of both healthy and young tree decline-affected trees. Thirteen genera of bacteria were found, the most ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.43.6.1335-1342.1982
更新日期:1982-06-01 00:00:00
abstract::The developing intestinal microbiota of breast-fed infants is considered to play an important role in the priming of the infants' mucosal and systemic immunity. Generally, Bifidobacterium and Lactobacillus predominate the microbiota of breast-fed infants. In intervention trials it has been shown that lactobacilli can ...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.72.4.2359-2365.2006
更新日期:2006-04-01 00:00:00
abstract::The DNA sequence of a 359-bp fragment of nifH was determined for the heterocystous strains Anabaena sp. strain CA (ATCC 33047), Nostoc muscorum UTEX 1933, a Nostoc sp., Gloeothece sp. strain ATCC 27152, Lyngbya lagerheimii UTEX 1930, and Plectonema boryanum IU 594. Results confirmed that the DNA sequence of the 359-bp...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.60.3.880-887.1994
更新日期:1994-03-01 00:00:00
abstract::The incidence of community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) infection has been increasing; however, the sources of infection remain unclear. Therefore, we investigated the involvement of meat as a possible mediator of CA-MRSA infection. We examined the distribution of MRSA strains in comm...
journal_title:Applied and environmental microbiology
pub_type: 杂志文章
doi:10.1128/AEM.07470-11
更新日期:2012-04-01 00:00:00