Bibliothek

X
feed icon rss

Ihre E-Mail wurde erfolgreich gesendet. Bitte prüfen Sie Ihren Maileingang.

Leider ist ein Fehler beim E-Mail-Versand aufgetreten. Bitte versuchen Sie es erneut.

Vorgang fortführen?

Exportieren
Filter
  • transposable elements  (3)
  • Prunus cerasus  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Presence of an Activator (Ac)-like sequence in Pennisetum glaucum (pearl millet) (1990)
    Springer
    Plant molecular biology 15 (1990), S. 177-179 
    Details
    ISSN: 1573-5028
    Schlagwort(e): pearl millet (Pennisetum glaucum) ; Poaceae ; transposable elements ; Activator (Ac)
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00017740
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 2
    Digitale Medien
    Digitale Medien
    Morphological variation within a sour cherry collection (1991)
    Springer
    Euphytica 52 (1991), S. 47-55 
    Details
    ISSN: 1573-5060
    Schlagwort(e): Prunus cerasus ; sour cherry ; morphology ; germplasm collection ; genebank ; variation ; principal component analysis
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Summary Morphological traits of 28 full-sib sour cherry (Prunus cerasus L.) families developed with pollen from European sour cherry selections were evaluated with principal component (PC) analysis. The traits which loaded on the first PC were size characters such as lateral length, leaf area, fruit weight, and trunk diameter increase. These character loading on the first PC could be interpreted as representing gradations between morphologies characteristic of the 2 presumed progenitor species, sweet cherry (P. avium L.) and ground cherry (P. fruticosa Pall.). Mean family differences in trunk diameter increase, lateral length, leaf area, and fruit weight varied approximately 12, 3.7, 2.5, and 2 fold, respectively. These results suggest that it may be possible to select sour cherry hybrids approaching the tree and fruit size of either progenitor species. The results are discussed in reference to germplasm collection and the potential of certain cultivars and hybrids as parents.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00037856
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 3
    Digitale Medien
    Digitale Medien
    Analysis of hexamer and pentamer motifs within a maize database: the presence of motif ‘signatures’ in functional gene categories (1999)
    Springer
    Genetica 105 (1999), S. 19-29 
    Details
    ISSN: 1573-6857
    Schlagwort(e): Ac transposase binding site ; functional gene categories ; genomics ; hexamer ; maize ; motif signatures ; nonrandom distributions ; pentamer ; repeat motifs ; Tourist motif ; transposable elements
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Several transposable elements (TEs) have been reported in association with genes in maize and other plants. In this study we found, based on statistical analyses of 951 DNA sequences within a maize computer database, that short hexamer and pentamer DNA motifs from the Activator (Ac) and from the Tourist TEs, respectively, were also associated with maize genes. Moreover, these two short hexamer and pentamer TE motifs were nonrandomly and nearly nonrandomly distributed, respectively, with respect to particular biochemical functions of those maize genes. To determine whether this distribution may be unique to TE motifs, or may be more widespread among hexamers/pentamers in general, we similarly studied six additional hexamer or pentamer sequences not derived from TEs. These also showed nonrandom distribution with respect to functional gene categories in the maize database. However, each of the total of eight short sequence motifs we studied differed in its pattern of association with distinct sets of functional gene categories; that is, there was a unique ‘signature’ for each of the hexamers and pentameters tested. Potential biological hypotheses to explain these findings are discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1023/A:1003559310976
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 4
    Digitale Medien
    Digitale Medien
    Molecular evolutionary characterization of an Activator (Ac)-like transposable element sequence from pearl millet (Pennisetum glaucum) (Poaceae) (1994)
    Springer
    Genetica 92 (1994), S. 77-89 
    Details
    ISSN: 1573-6857
    Schlagwort(e): Ac ; pearl millet ; transposable elements
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract We present data on the evolution of the Ac/Ds family of transposable elements in select grasses (Poaceae). A defective Ac-like element was cloned from a DNA library of the grass Pennisetum glaucum (pearl millet) and its entire 4531 bp sequence has been determined. When the pearl millet Ac-like sequence is aligned with the maize Ac sequence, it is found that there is approximately 70% DNA similarity in the central region spanning most of maize Ac exon II and all of exon III. In addition, there are two smaller regions of similarity at the Ac terminii. Besides these three major structural similarities, Pennisetum Ac has two large regions, one 5′ and one 3′, that show little similarity to Zea Ac. Furthermore, most of the sequences corresponding to intron II in maize Ac are absent in pearl millet Ac. Kimura's evolutionary distance between the central region of maize and pearl millet Ac sequences is estimated to be 0.429±0.020 nucleotide substitutions per site. This value is not significantly different from the average number of synonymous substitutions for coding regions of the Adh1 gene between maize and pearl millet, which is 0.395±0.051 nucleotide substitutions per site. If we assume Ac and Adh1 divergence times are equivalent between maize and pearl millet, then the above calculations suggest Ac-like sequences have probably not been strongly constrained by natural selection. Conserved DNA and amino acid sequence motifs are also examined. The level of DNA sequence divergence between maize and pearl millet Ac sequences, the estimated date when maize and pearl millet diverged (25–40 million years ago), coupled with their reproductive isolation/lack of current genetic exchange, all support the theory that Ac-like sequences have not been recently introduced into pearl millet from maize. Instead, Ac-like sequences were probably present in the progenitor of maize and pearl millet and have thus existed in the grasses for at least 25 million years.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00163756
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
Schließen ⊗
Diese Webseite nutzt Cookies und das Analyse-Tool Matomo. Weitere Informationen finden Sie hier...