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Characterization of CorR, a transcriptional activator which is required for biosynthesis of the phytotoxin coronatine
(American Society for Microbiology, 1998-12)
Coronatine (COR) is a plasmid-encoded phytotoxin synthesized by several pathovars of phytopathogenic Pseudomonas syringae. The COR biosynthetic gene cluster in P. syringae pv. glycinea PG4180 is encoded by a 32-kb region ...
THz spectroscopy and source characterization by optoelectronic interferometry
(AIP Publishing, 1992-03-02)
We demonstrate a new type of THz optoelectronic interferometer, by fully characterizing a recently developed THz source to beyond 6 THz, and by measuring the absorption coefficient of high-resistivity GaAs from 1 to 5 THz. ...
Identification and relatedness of coronatine-producing Pseudomonas syringae pathovars by PCR analysis and sequence determination of the amplification products
(American Society for Microbiology, 1994-08)
Production of the chlorosis-inducing phytotoxin coronatine in the Pseudomonas syringae pathovars atropurpurea, glycinea, maculicola, morsprunorum, and tomato has been previously reported. DNA hybridization studies previously ...
Ultrastructural morphology of Cowdria ruminantium in midgut epithelial cells of adult Amblyomma hebraeum female ticks
(AOSIS, 1991)
Amblyomma hebraeum male and female ticks, experimentally infected as larvae with the Ball 3 stock of Cowdria ruminantium, were fed on a heartwater susceptible sheep. The initial attachment of the males was required as a ...
Impact of variations in temperature on early Plasmodium falciparum development in Anopheles stephensi
(Cambridge University Press (CUP), 1995)
Trichloroethylene degradation by two independent aromatic-degrading pathways in Alcaligenes eutrophus JMP134
(American Society for Microbiology, 1990-04)
The bacterium Alcaligenes eutrophus JMP134(pJP4) degrades trichloroethylene (TCE) by a chromosomal phenol-dependent pathway and by the plasmid-encoded 2,4-dichlorophenoxyacetic acid pathway. The two pathways were independent ...
THz time-domain spectroscopy of high Tc substrates
(AIP Publishing, 1990-09-03)
Using the method of time-domain spectroscopy, we have measured the absorption and dispersion from 0.2 to 2 THz of the high Tc substrates, magnesium oxide, yttria-stabilized zirconia (YSZ), and lanthanum aluminate. Our ...
Sporozoite transmission by Anopheles freeborni and Anopheles gambiae experimentally infected with Plasmodium falciparum
(The American Mosquito Control Association, 1992)
A micro-membrane feeding technique was used to evaluate sporozoite transmission for Anopheles freeborni and An. gambiae experimentally infected with Plasmodium falciparum. From cohorts of infected mosquitoes with equivalent ...
Genetic and plasmid diversity within natural populations of Pseudomonas syringae with various exposures to copper and streptomycin bactericides
(American Society for Microbiology, 1994-12)
We examined the genetic and plasmid diversity within natural populations of Pseudomonas syringae isolated from three ornamental pear nurseries in eastern Oklahoma. The bactericide spray regimen differed at each nursery; ...
Far-infrared time-domain spectroscopy with terahertz beams of dielectrics and semiconductors
(Optical Society of America, 1990-10)
Using the method of time-domain spectroscopy, we measure the far-infrared absorption and dispersion from 0.2 to 2 THz of the crystalline dielectrics sapphire and quartz, fused silica, and the semiconductors silicon, gallium, ...