Citations Only: Recent submissions
Now showing items 601-620 of 990
-
Metabolism and activity of the spanish fringe-toed lizard (Lacertidae: acanthodactylus erythrurus)
(Elsevier: Journal of Thermal Biology, 1978-10)1.In the field, adult fringe-toed lizards (Acanthodactylus erythrusus) had a mean body temperature of 38.8 ± 0.2 (S.E.) °C while subadults maintained a significantly lowr temperature (x average = 35.4 +/- 0.5 degrees ... -
Modification of rhizobacterial populations by engineering bacterium utilization of a novel plant-produced resource
(Nature Publishing Group: Nature Biotechnology, 1997-04)The ability to catabolize distinct nutrients produced by a plant may be a factor in the successful colonization of that host by a bacterium when in competition with other rhizosphere microorganisms. We tested this hypothesis ... -
Induction of hairy roots on cultivated soybean genotypes and their use to propagate the soybean cyst nematode.
(American Phytopathological Society: Phytopathology, 1990)Ten soybean (Glycine max ) genotypes were evaluated for hairy root induction by four strains of Agrobacterium rhizogenes . Influence of inoculation site was assessed by infecting hypocotyls and cotyledons on germinated ... -
Mannityl opine accumulation and exudation by transgenic tobacco
(American Society of Plant Biologists: Plant Physiology, 1992-02)Three genes from the TR region of pTi15955 were introduced into tobacco (Nicotiana tabacum L.) to direct the synthesis of the mannityl opines from hexose sugars and glutamine or glutamate. Opines were present in all tissue ... -
Engineering bacterial competitiveness and persistence in the phytosphere
(American Phytopathological Society: Molecular Plant-Microbe Interactions, 2002-09)Several tactics exist to improve the survival of an introduced microorganism of interest in the plant environment. One, derived from studies on the Agrobacterium-plant interaction and the role of opines in this interaction, ... -
Regeneration of transgenic soybean (Glycine max) plants from electroporated protoplasts
(American Society of Plant Biologists: Plant Physiology, 1992-05)Transgenic soybean (Glycine max [L.] Merr.) plants were regenerated from calli derived from protoplasts electroporated with plasmid DNA-carrying genes for a selectable marker, neomycin phosphotransferase (NPTII), under the ... -
Translocation and exudation of tumor metabolites in crown galled plants
(American Phytopathological Society: Molecular Plant-Microbe Interactions, 1996-05)Crown gall tumors are induced on susceptible plants by pathogenic strains of Agrobacterium. These neoplastic plants cells produce metabolites, called opines, which provide a source of nutrients to colonizing agrobacteria. ... -
A liquid culture method for rescuing immature embryos of eastern cottonwood
(Springer: Plant Cell, Tissue and Organ Culture, 1987-01)A one-step method to rescue immature embryos of eastern cottonwood (Populus deltoides Bartr.) is described. Plantlets developed from 83% of 25-day-old embryos grown in shaken culture on Murashige and Skoog (MS) liquid ... -
How to produce and characterize transgenic plants
(National Association of Biology Teachers: The American Biology Teacher, 2002-04)A simple and inexpensive protocol to produce and characterize transgenic plants for undergraduate students has been developed. Leaf tissue explants from greenhouse or in vitro-grown petunia or tobacco plants are incubated ... -
Long- and short-chain plant-produced bacterial n-acyl-homoserine lactones become components of phyllosphere, rhizosphere, and soil
(American Phytopathological Society: Molecular Plant-Microbe Interactions, 2006-03)Two N-acyl-homoserine lactone (acyl-HSL) synthase genes, lasI from Pseudomonas aeruginosa and yenI from Yersinia enterocolitica, were introduced into tobacco, individually and in combination. Liquid chromatograph–tandem ... -
Induction of pseudoactinorhizae by the plant pathogen Agrobacterium rhizogenes
(American Society of Plant Biologists: Plant Physiology, 1992-02)Infection of Elaeagnus angustifolia cotyledonary wounds by Agrobacterium rhizogenes strain NCPPB 2659 resulted in the formation of pseudoactinorhizae on roots differentiated from callus. These pseudoactinorhizal root nodules ... -
Tobacco etch virus leader sequence enhances inducible indoleacetic acid-lysine synthetase activity in transgenic plants
(Elsevier: Plant Physiology and Biochemistry, 2001-07)Indole-3-acetic acid (IAA) is one of several plant hormones that interact to coordinate growth and differentiation in higher plants. IAA has been identified in all species investigated and is found not only in its free ... -
Separation, detection, and quantification of imine-linked opines by high-performance liquid chromatography
(Elsevier: Journal of Chromatography, 1998-07-17)Protocols for reversed-phase high-performance liquid chromatography (RP-HPLC) with fluorescence detection were developed for the separation, detection and quantification of imine-linked opines, following 4-fluoro-7-nitro ... -
Developmental effects of ambient UV-B light and landfill leachate in Rana blairi and Hyla chrysoscelis
(Elsevier: Ecotoxicology and Environmental Safety, 2002-09)This study assessed the effects of ambient UV light on the development of two native species of anurans, Rana blairi and Hyla chrysoscelis, during their normal breeding season in Oklahoma. Additionally, the effects of ... -
Herpetofaunal species richness responses to forest landscape structure in Arkansas
(Elsevier: Forest Ecology and Management, 2005-05-02)Species accumulation curves were used to study relationships between herpetofaunal richness and habitat characteristics on four watersheds in Arkansas that differed markedly with respect to management intensity. Selected ... -
Status and distribution of the alligator snapping turtle, Macrochelys temminckii, in Oklahoma
(Southwestern Association of Naturalists: The Southwestern Naturalist, 2005-03)Although historic records of the alligator snapping turtle, Macrochelys temminckii, show a past distribution throughout eastern Oklahoma, little is known about the current status and distribution of this species in the ... -
Salt excretion in a beach lizard (Ameiva quadrilineata, Teiidae)
(Springer: Journal of Comparative Physiology B: Biochemical, Systemic, and Environmental Physiology, 1976-01)The teiid lizardAmeiva quadrilineata has a nasal salt gland that responds to NaCl loading by increasing excretion of Na+ (from 1.12 to 2.63 uM/100 gh), K+ (from 0.14 to 2.43 uM/100 gh), and Cl– (from 1.10 to 5.47 uM/100 ... -
Effects of Body Temperature and Hydration State on Organismal Performance of Toads, Bufo americanus
(The University of Chicago Press: Physiological and Biochemical Zoology, 2003-03)Temperature and humidity are dominant environmental variables affecting performance of nocturnal, terrestrial amphibians. Toads are frequently active at body temperatures (Tb) and hydration states (HS) that yield suboptimal ... -
Melanin deposits associated with the venom glands of snakes
(Wiley: Journal of Morphology, 1978-01)Melanin deposits in the heads of both true vipers (Viperinae) and pit vipers (Crotalinae) are concentrated over the dorsal and dorsolateral aspects of the venom glands. This pigment may occur in any or all of six sites ... -
Prey-handling and the evolutionary ecology of sand-swimming lizards (Lerista?: Scincidae)
(Springer: Oecologia, 1997-10)Fossorial lizards differ in morphology from their surface-dwelling relatives. The Australian sphenomorphine skink genus Ctenotus consists of surface-dwelling species, and is closely related to the genus Lerista, which ...