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Digitale Medien

Interactions between atmospheric CO2 concentration and phosphorus nutrition on the formation of proteoid roots in white lupin (Lupinus albus L.) (2002)

Campbell, C. D. ; Sage, R. F.

Oxford, UK : Blackwell Science Ltd

Plant, cell & environment 25 (2002), S. 0

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ISSN: 1365-3040

Quelle: Blackwell Publishing Journal Backfiles 1879-2005

Thema: Biologie

Notizen: Atmospheric [CO2] affects photosynthesis and therefore should affect the supply of carbon to roots. To evaluate interactions between carbon supply and nutrient acquisition, the [CO2] effects on root growth, proteoid root formation and phosphorus (P) uptake capacity were studied in white lupin (Lupinus albus L.) grown hydroponically at 200, 410 and 750 µmol mol−1 CO2, under sufficient (0·25 mm P) and deficient (0·69 µm P) phosphorus. Plant size increased with increasing [CO2] only at high P. Both P deficiency and increasing [CO2] increased the production of proteoid clusters; the increase in response to increased [CO2] was proportionally greater from low to ambient [CO2] than from ambient to high. The activity of phosphoenol pyruvate carboxylase in the proteoid root, the exudation of organic acids from the roots, and the specific uptake of P increased with P deficiency, but were unaffected by [CO2]. Increasing [CO2] from Pleistocene levels to those predicted for the next century increased plant size and allocation to proteoid roots, but did not change the specific P uptake capacity per unit root mass. Hence, rising [CO2] should promote nutrient uptake by allowing lupins to mine greater volumes of soil.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1046/j.1365-3040.2002.00883.x

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Digitale Medien

THE VISUAL SYSTEM OF INSECTIVORES AND PRIMATES (1969)

Campbell, C. B. G.

Oxford, UK : Blackwell Publishing Ltd

Annals of the New York Academy of Sciences 167 (1969), S. 0

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ISSN: 1749-6632

Quelle: Blackwell Publishing Journal Backfiles 1879-2005

Thema: Allgemeine Naturwissenschaft

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1111/j.1749-6632.1969.tb20458.x

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Digitale Medien

Virulence, adsorbability, and antigenicity of foot-and-mouth disease virus selected by adsorption with homogenized mouse kidney (1969)

Campbell, C. H.

Springer

Archives of virology 26 (1969), S. 238-248

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ISSN: 1432-8798

Quelle: Springer Online Journal Archives 1860-2000

Thema: Medizin

Notizen: Summary A small percentage of a stock foot-and-mouth disease virus population was found to be relatively resistant to adsorption with homogenized adult mouse kidney. To select this portion of the population, a series of 10 passages was performed, each passage consisting of adsorption with homogenized kidney and propagation of the unadsorbed virus in bovine kidney cell cultures. The selected virus was relatively resistant to adsorption with mouse kidney and relatively avirulent for adult mice. It was immunogenic in adult mice and seemed to be antigenically the same as the parent virus. This information might possibly be used in selecting viruses for live virus vaccines.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF01242376

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