Growth rate hypothesis and efficiency of protein synthesis under different sulphate concentrations in two green algae

2015 ◽  
Vol 38 (11) ◽  
pp. 2313-2317 ◽  
Author(s):  
Mario Giordano ◽  
Matteo Palmucci ◽  
John A. Raven
Keyword(s):  
Growth Rate ◽  
Protein Synthesis ◽  
Green Algae ◽  
Growth Rate Hypothesis

scholarly journals Testing the Growth Rate Hypothesis in Vascular Plants with Above- and Below-Ground Biomass

PLoS ONE ◽  
2012 ◽  
Vol 7 (3) ◽  
pp. e32162 ◽  
Author(s):  
Qiang Yu ◽  
Honghui Wu ◽  
Nianpeng He ◽  
Xiaotao Lü ◽  
Zhiping Wang ◽  
...  
Keyword(s):  
Growth Rate ◽  
Vascular Plants ◽  
Ground Biomass ◽  
Growth Rate Hypothesis ◽  
Below Ground

scholarly journals Wachstumsgeschwindigkeit der Peptidkette im Tabakmosaikvirus

1967 ◽  
Vol 22 (12) ◽  
pp. 1280-1291 ◽  
Author(s):  
H. Diringer ◽  
F. A. Anderer ◽  
G. Schramm
Keyword(s):  
Amino Acids ◽  
Growth Rate ◽  
Protein Synthesis ◽  
Peptide Chain ◽  
Cell Protein ◽  
Virus Protein ◽  
Animal Cells ◽  
Tobacco Leaves ◽  
Soluble Cell ◽  
C Terminus

The rate of incorporation of labelled amino acids into the complete tobacco mosaic virus (TMV), into soluble virus protein and into soluble cell proteins has been determined in discs of infected and healthy tobacco leaves. The rate of overall protein synthesis is increased by 50% in the infected leaves. At least 60% of the increase derives from the synthesis of virus-specific proteins and the synthesis of cellular proteins is not inhibited. The virus protein synthesis is strongly temperature dependent and shows a maximum at 28 °C.The exchange of free labelled amino acids between the external medium and the inner cellular pool reaches equilibrium within ten minutes. The influence of the exchange rate on the measurement of the kinetics of peptide chain synthesis is discussed in detail.Discs from infected leaves were incubated for short periods at low temperatures in media containing 3H-tyrosine or 3H-proline. Peptides isolated after 5 minutes incubation at 15 °C were found to be uniformly labelled with no apparent gradient of radioactivity from the N- to the C-terminus. The results indicate that the growth rate of the peptide chain at 15 °C is probably higher than 2 - 3 amino acids/sec and at 28 °C higher than 20 amino acids/sec. These values are higher than those for animal cells and similar to those for protein synthesis in Escherichia coli.Comparison of the growth rate of TMV protein with rate of total protein synthesis and the number of ribosomes in the tobacco leaves indicate that only a small portion of the ribosomes takes part in cell protein synthesis.

scholarly journals ANTAGONISM BY DIBUTYRYL ADENOSINE CYCLIC 3',5'-MONOPHOSPHATE AND TESTOSTERONE OF CELL ROUNDING REACTIONS

1973 ◽  
Vol 59 (2) ◽  
pp. 471-479 ◽  
Author(s):  
Brian Storrie
Keyword(s):  
Growth Rate ◽  
Protein Synthesis ◽  
Cell Growth ◽  
Concanavalin A ◽  
Divalent Cations ◽  
Cell Growth Rate ◽  
Dibutyryl Camp ◽  
Cell Rounding ◽  
Drug Removal ◽  
Kinetics Of

In an attempt to understand further the mechanism of the morphological and functional "reverse transformation" of CHO-K1 cells induced by dibutyryl adenosine cyclic 3',5'-monophosphate (cAMP) and testosterone, the kinetics of variation in the susceptibility of cells to rounding after the addition or deletion of dibutyryl cAMP and testosterone have been investigated. Changes in susceptibility to cell rounding upon removal of divalent cations or pulse exposure to concanavalin A were complete within 0.5–1 h after addition or deletion of drug. In comparison, the gross conversion of CHO-K1 cells from epithelial- to fibroblast-like morphology after drug treatment or the converse change after drug removal required 8 or 4 h, respectively. The effects on cell rounding are not caused by an effect of dibutyryl cAMP upon cell growth rate. Inhibitor experiments indicate that the changes investigated do not require continued RNA or protein synthesis and are not prevented by agents which depolymerize microtubules.

Level of cottonseed meal but not frequency of feeding regulates whole-body protein synthesis and growth of sheep fed a roughage diet

2009 ◽  
Vol 49 (11) ◽  
pp. 1023
Author(s):  
L. P. Kahn ◽  
Somu B. N. Rao ◽  
J. V. Nolan
Keyword(s):  
Growth Rate ◽  
Protein Synthesis ◽  
Cottonseed Meal ◽  
Whole Body ◽  
Body Protein ◽  
Protein Supplements ◽  
Protein Retention ◽  
Medium Quality ◽  
Protein Rich

An incomplete factorial experiment was conducted to determine the effect of level and frequency of feeding of a protein-rich supplement on the growth and whole-body protein metabolism of young sheep fed a medium quality roughage diet. Cottonseed meal (CSM) was used as the protein supplement and provided at 0, 0.2 or 0.4% liveweight per day at a frequency of 1 or 3 times each week and chopped oaten (0.95) and lucerne (0.05) hay was the roughage. Growth rate more than doubled (P < 0.01) following provision of CSM but there was no advantage of feeding CSM at the highest level. Frequency of feeding CSM did not alter growth rate. Intake of hay was little affected by CSM and as a consequence the food conversion ratio declined (P < 0.01) favourably from 22 : 1 (nil CSM) to 9 : 1 as a result of supplementation. The rate of whole-body protein synthesis increased (P < 0.01) in response to the highest level of CSM with no apparent change in protein degradation, underpinning an increase (P < 0.01) in protein retention. These results highlight the role of protein supplements for promoting growth of young sheep on roughage diets and indicate that these supplements need to be provided only once a week.

Does the growth rate hypothesis apply to aquatic hyphomycetes?

2013 ◽  
Vol 6 (6) ◽  
pp. 493-500 ◽  
Author(s):  
I.J. Grimmett ◽  
K.N. Shipp ◽  
A. Macneil ◽  
F. Bärlocher
Keyword(s):  
Growth Rate ◽  
Aquatic Hyphomycetes ◽  
Growth Rate Hypothesis
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