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  • 1
    Electronic Resource
    Electronic Resource
    The accumulation pattern in developing seeds and its relation to fatty acid variation in soybean (2001)
    Oxford, UK : Blackwell Publishing Ltd
    Plant breeding 120 (2001), S. 0 
    Details
    ISSN: 1439-0523
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Sixty soybean cultivars from Japan and the USA formed five maturity groups (IIb-Vc) based on number of days from sowing to flowering and number of days from flowering to maturity. Highly significant intervarietal differences in fatty acid composition were found in all the maturity groups, especially in IIc. Stearic and oleic acids showed a larger variation than palmitic, linoleic and linolenic acids. Principal component analysis suggested that the total variation of fatty acid composition depended mainly on the desaturation levels from oleic to linoleic acid. Three cultivars exhibiting unique fatty acid composition, together with a standard cultivar, were examined for the contents of the five fatty acids, as well as crude oil at eight seed-filling stages. For all four cultivars, it was found that crude oil content increased sigmoidally with advancing filling stage, and that the accumulation patterns of palmitic, linoleic and linolenic acids were similar to that of crude oil. However, the accumulation pattern of stearic acid was different from that of crude oil and divided the cultivars into two distinct groups. For oleic acid, only the cultivar ‘Aburamame’ showed a rapid increase in proportion with advancing filling stage, although not differing markedly in accumulated content from the other cultivars. These results indicate that analysing the accumulation patterns of fatty acids could explain the latent genetic variation in fatty acid composition of soybean seeds.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1439-0523.2001.00631.x
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  • 2
    Electronic Resource
    Electronic Resource
    Characterization of morphology and physiological actions of scale osteoclasts in the rainbow trout (1999)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 54 (1999), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The morphology of scale osteoclasts in rainbow trout Oncorhynchus mykiss was characterized by light and scanning electron microscopy, and the effects of oestradiol-17β-treatment and sexual maturation on scale osteoclast morphology were investigated. The cells associated with resorption cavities could be distinguished morphologically as two types: symmetrical, compact cells lacking or having only a few cell processes, termed type 1 cells, and asymmetrical cells covered with folds and having several cell processes, termed type 2 cells. In adult sexually maturing fish, where scale resorption was high, type 1 cells were predominant. In juveniles and spawned adults where scale resorption was assumed to be relatively low, mostly type 2 cells were present. Oestradiol 17-β-treatment of juvenile rainbow trout increased the osteoclast activity, but did not affect the osteoclast morphology. Using light microscopy, the majority of the cells observed in, and closely associated with, the resorption cavities were mononucleated in both maturing and spawned fish. Occasionally, bi- and multinucleated osteoclasts were observed in the maturing, but not in the spawned fish. Light microscopic enzyme-histochemistry showed that the majority of the mononucleated cells, as well as the bi- and multinucleated ones, were tartrate resistant acid phosphatase positive in both groups of fish, thus implying that both type 1 and type 2 cells were osteoclasts. It is thus apparent that scale resorption in rainbow trout is carried out by two morphologically distinct osteoclast populations, representing different stages of osteoclast activity and/or different stages of osteoclast differentiation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1999.tb00645.x
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  • 3
    Electronic Resource
    Electronic Resource
    Intracellular levels of cyclic AMP and adenylate cyclase activity during mycelial development in fruiting body formation in Lentinus edodes (1988)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 55 (1988), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract Condensed mycelia just prior to the onset of fruiting of Lentinus edodes accumulated adenosine 3′,5′-cyclic monophosphate (cAMP) 9.2 times that of non-aggregated mycelia (control). Immature fruiting bodies also contained cAMP, 7.9 times that of the control, while cAMP content was low in mature fruiting bodies. The immature fruiting bodies contained the highest level of adenylate cyclase activity, i.e., 3 times that of the condensed mycelia, suggesting that the presence of a high level of cAMP is required for the onset of the fruiting and cAMP may be rather actively metabolized in the stage of maturing fruiting bodies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1988.tb02814.x
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