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Biosynthesis of metal-binding polypeptides and their precursors in response to cadmium in Datura innoxia

Description: Metal-tolerant Datura innoxia cells synthesize large amounts of a class of metal-binding polypeptides, poly({gamma}-glutamylcysteinyl) glycines (({gamma}-EC){sub n}G, n=2-5), when exposed to Cd. These polypeptides have a high affinity for Cd (2) and certain other metal ions and are thought to play a role in metal tolerance in higher plants. ({gamma}-EC){sub n}G is biosynthetically derived from glutathione. Therefore, the response of Datura cells to Cd must include an increase in production of g… more
Date: January 1, 1991
Creator: Jackson, P.J.; Delhaize, E. & Kuske, C.R.
Partner: UNT Libraries Government Documents Department
open access

Molecular biology in studies of oceanic primary production

Description: Remote sensing and the use of moored in situ instrumentation has greatly improved our ability to measure phytoplankton chlorophyll and photosynthesis on global scales with high temporal resolution. However, the interpretation of these measurements and their significance with respect to the biogeochemical cycling of carbon relies on their relationship with physiological and biochemical processes in phytoplankton. For example, the use of satellite images of surface chlorophyll to estimate primary… more
Date: January 1, 1992
Creator: LaRoche, J.; Falkowski, P.G. (Brookhaven National Lab., Upton, NY (United States)) & Geider, R. (Delaware Univ., Lewes, DE (United States). Coll. of Marine Studies)
Partner: UNT Libraries Government Documents Department
open access

Body shape differences in a pair of closely related Malawi cichlids and their hybrids: Effects of genetic variation, phenotypic plasticity, and transgressive segregation

Description: This article investigates the contributions of genetic and plastic components for differences in body shape in two species of Lake Malawi cichlids using wild-caught specimens and a common garden experiment.
Date: January 28, 2017
Creator: Husemann, Martin; Tobler, Michael; McCauley, Cagney; Ding, Baoqing & Danley, Patrick D.
Partner: UNT College of Arts and Sciences
open access

Dysbaric gas bubble disease in dogs. IV. Acclimatization to diving

Description: Acclimatization to diving was documented to occur in dogs. An increase in the number of repetitive dives which could be tolerated, as well as a decrease in the total number of pulmonary artery venous gas emboli resulting from individual dives were observed. The results from the experimental subject ''Jason'' indicate that acclimatization involves a reduction in the number of bubbles, and not an increase in the ability of the body to tolerate bubbles. Acclimatization is principally a physical ra… more
Date: January 1, 1986
Creator: Kunkle, T. D.; Morita, A. & Beckman, E. L.
Partner: UNT Libraries Government Documents Department
open access

Effects of electronic identification, temperature monitoring, and ELA on the meat industry. [Electronic monitoring of cattle herds and serological testing for diseases]

Description: Electronic identification of CaHl/sub e/ and temperature monitoring of tolerance to environmental changes are technically feasible for the management of breeder herds and dairy cattle. Some commercial organizations are already manfacturing simple forms of electronic identification. A nearly ideal system can become a reality if the various potential user groups work together with the developers, manufacturers, and regulatory agencies. Widespread use of electronic identification and temperature m… more
Date: January 1, 1977
Creator: Holm, D. M.
Partner: UNT Libraries Government Documents Department
open access

Transmutations across hierarchical levels. [Development of large-scale ecological models]

Description: The development of large-scale ecological models depends implicitly on a concept known as hierarchy theory which views biological systems in a series of hierarchical levels (i.e., organism, population, trophic level, ecosystem). The theory states that an explanation of a biological phenomenon is provided when it is shown to be the consequence of the activities of the system's components, which are themselves systems in the next lower level of the hierarchy. Thus, the behavior of a population is… more
Date: January 1, 1977
Creator: O'Neill, R. V.
Partner: UNT Libraries Government Documents Department
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