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the 7th letter of the Roman alphabet (同)g

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2013/10/10 07:34:34」(JST)

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English Journal

The effect of nutrient enrichment on the growth, nucleic acid concentrations, and elemental stoichiometry of coral reef macroalgae.

Reef R, Pandolfi JM, Lovelock CE.AbstractThe growth rate hypothesis (GRH) links growth rates with organism elemental stoichiometry. Support for the GRH was found for many animal species, but less so for plants. This is the first study to test the GRH in macroalgae. Tropical coral reef macroalgae from three lineages, Caulerpa serrulata (Chlorophyta), Laurencia intricata (Rhodophyta), and Sargassum polyphyllum (Phaeophyceae) were grown enriched with nitrogen or phosphorous and under control conditions at Heron Island on the Great Barrier Reef, Australia. Growth rate, photosynthesis, nucleic acid composition, and elemental stoichiometry were measured. Nutrient enrichment had positive effects on photosynthetic rates and on investment in RNA. However, growth rate was not correlated with either photosynthetic rates or RNA content; thus, we did not find support for the GRH in tropical macroalgae. Macroalgae, especially L. intricata, accumulated P to very high levels (>0.6% of dry weight). The growth rate response to tissue P concentrations was unimodal. Above 0.21%, P accumulation had negative effects on growth. Nitrogen was not stored, but evidence of futile cycling was observed. The capacity to store large amounts of P is probably an adaptation to the low and patchy nutrient environment of the tropical oceans.
Ecology and evolution.Ecol Evol.2012 Aug;2(8):1985-95. doi: 10.1002/ece3.330. Epub 2012 Jul 16.
The growth rate hypothesis (GRH) links growth rates with organism elemental stoichiometry. Support for the GRH was found for many animal species, but less so for plants. This is the first study to test the GRH in macroalgae. Tropical coral reef macroalgae from three lineages, Caulerpa serrulata (Chl
PMID 22957199

The transcription factor Grainy head and the steroid hormone ecdysone cooperate during differentiation of the skin of Drosophila melanogaster.

Gangishetti U, Veerkamp J, Bezdan D, Schwarz H, Lohmann I, Moussian B.SourceAnimal Genetics, University of Tübingen, Auf der Morgenstelle, Tübingen, Germany.
Insect molecular biology.Insect Mol Biol.2012 Jun;21(3):283-95. doi: 10.1111/j.1365-2583.2012.01134.x. Epub 2012 Mar 27.
The arthropod epidermis is an epithelium that deposits the apical cuticle, which is a stratified extracellular matrix (ECM) protecting the animal against pathogens, preventing dehydration and also serving as an exoskeleton. Differentiation of the cuticle conceivably implies coordinated production, s
PMID 22458773

Tumour metastasis as an adaptation of tumour cells to fulfil their phosphorus requirements.

de Carvalho CC, Caramujo MJ.SourceIBB-Institute for Biotechnology and Bioengineering, Centre for Biological and Chemical Engineering, Instituto Superior Técnico, Av. Rovisco Pais, 1049-001 Lisboa, Portugal. ccarvalho@ist.utl.pt
Medical hypotheses.Med Hypotheses.2012 May;78(5):664-7. doi: 10.1016/j.mehy.2012.02.006. Epub 2012 Mar 4.
Inorganic phosphate (Pi) is a vital component of nucleotides, membrane phospholipids, and phosphorylated intermediates in cellular signalling. The Growth Rate Hypothesis (GRH) states that fast growing organisms should be richer in phosphorus (relatively low C:P and N:P cell content) than slow develo
PMID 22391031

Japanese Journal

Association of interleukin-1 polymorphisms with periodontitis in Down syndrome

Khocht Ahmed,Heaney Kevin,Janal Malvin,Turner Bobby
Journal of Oral Science 53(2), 193-202, 2011
… Fifty-four DS patients (18-56 yr, 48.15% male, 77.78% Caucasians) were recruited from the Georgia Regional Hospital (GRH) health care system. …
NAID 130000834359