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  • 1
    Online Resource
    Online Resource
    Discord in the family Sparidae (Teleostei): divergent phylogeographical patterns across the Atlantic–Mediterranean divide
    Oxford University Press (OUP) ; 2003
    In:  Journal of Evolutionary Biology Vol. 16, No. 6 ( 2003-11-01), p. 1149-1158
    Details
    In: Journal of Evolutionary Biology, Oxford University Press (OUP), Vol. 16, No. 6 ( 2003-11-01), p. 1149-1158
    Abstract: The Strait of Gibraltar has been proposed to be the divide between two marine biogeographical regions, the Mediterranean Sea and the Northeast Atlantic. Intraspecific studies have shown, for several of the examined species, a reduction of gene flow between the two basins. The present study examines genetic variation at nuclear and mitochondrial loci in five marine teleost species belonging to the family Sparidae. Four samples for each species were analysed spanning the Northeast Atlantic and the Mediterranean. For all individuals 17 allozyme loci were scored and a combined single strand conformation polymorphism-sequencing approach was used to survey approximately 190 bp of the mitochondrial DNA (mtDNA) D-loop region. All five species share similar biological features. For three species, namely Lithognathus mormyrus, Spondyliosoma cantharus, and Dentex dentex, large mtDNA divergence was observed between Atlantic and Mediterranean samples. Little or no mtDNA differentiation was found in the other two species, Pagrus pagrus and Pagellus bogaraveo. Allozyme data revealed strong differentiation when comparing Atlantic and Mediterranean samples of L. mormyrus and D. dentex, moderate for P. pagrus, and no differentiation for P. bogaraveo and S. cantharus. These results provide evidence for a sharp phylogeographical break (sensu Avise) between the Atlantic and the Mediterranean for two (or possibly three) sparid species of the five investigated. At the same time, the obtained results for the other two species raise the question on which ecological/historical factors might have caused the observed discrepancy in the geographical distribution of genetic variation among otherwise biologically similar species.
    Type of Medium: Online Resource
    ISSN: 1010-061X , 1420-9101
    URL: Article
    DOI: 10.1046/j.1420-9101.2003.00620.x
    RVK:
    WA 15000
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2003
    detail.hit.zdb_id: 92624-3
    detail.hit.zdb_id: 1465318-7
    SSG: 12
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  • 2
    Online Resource
    Online Resource
    Tissue-Specific and Developmental Pattern of Expression of the Rice sps1 Gene
    Oxford University Press (OUP) ; 2000
    In:  Plant Physiology Vol. 124, No. 2 ( 2000-10-01), p. 641-654
    Details
    In: Plant Physiology, Oxford University Press (OUP), Vol. 124, No. 2 ( 2000-10-01), p. 641-654
    Abstract: Sucrose-phosphate synthase (SPS) is one of the key regulatory enzymes in carbon assimilation and partitioning in plants. SPS plays a central role in the production of sucrose in photosynthetic cells and in the conversion of starch or fatty acids into sucrose in germinating seeds. To explore the mechanisms that regulate the tissue-specific and developmental distribution of SPS, the expression pattern of rice (Oryza sativa) sps1 (GenBank accession no. U33175) was examined by in situ reverse transcriptase-polymerase chain reaction and the expression directed by the sps1promoter using the β-glucuronidase reporter gene. It was found that the expression of the rice sps1 gene is limited to mesophyll cells in leaves, the scutellum of germinating seedlings, and pollen of immature inflorescences. During leaf development, thesps1 promoter directs a basipetal pattern of expression that coincides with the distribution of SPS activity during the leaf sink-to-source transition. It was also found that during the vegetative part of the growth cycle, SPS expression and enzymatic activity are highest in the youngest fully expanded leaf. Additionally, it was observed that the expression of the sps1 promoter is regulated by light and dependent on plastid development in photosynthetic tissues, whereas expression in scutellum is independent of both light and plastid development.
    Type of Medium: Online Resource
    ISSN: 1532-2548 , 0032-0889
    URL: Article
    DOI: 10.1104/pp.124.2.641
    RVK:
    WA 15000
    Language: English
    Publisher: Oxford University Press (OUP)
    Publication Date: 2000
    detail.hit.zdb_id: 2004346-6
    detail.hit.zdb_id: 208914-2
    SSG: 12
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  • 3
    Online Resource
    Online Resource
    Towards whole-organ modelling of tumour growth
    Elsevier BV ; 2004
    In:  Progress in Biophysics and Molecular Biology Vol. 85, No. 2-3 ( 2004-06), p. 451-472
    Details
    In: Progress in Biophysics and Molecular Biology, Elsevier BV, Vol. 85, No. 2-3 ( 2004-06), p. 451-472
    Type of Medium: Online Resource
    ISSN: 0079-6107
    URL: Article
    DOI: 10.1016/j.pbiomolbio.2004.02.004
    RVK:
    WD 1002
    RVK:
    WA 1000
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2004
    detail.hit.zdb_id: 1498578-0
    SSG: 12
    Location Call Number Limitation Availability
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