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  • 1
    ISSN: 1432-2048
    Keywords: Apical senescence ; Gibberellins ; Photomorphogenesis ; Pisum ; Senescence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract In an early-flowering line of pea (G2) apical senescence occurs only in long days (LD), while growth in short days (SD) is indeterminate. In SD, G2 plants are known to produce a graft-transmissible substance which delays apical senescence in related lines that are photoperiod-insensitive with regard to apical senescence. Gibberellic acid (GA3) applied to the apical bud of G2 plants in LD delayed apical senescence indefinitely, while N6-benzyladenine and α-naphthaleneacetic acid were ineffective. Of the gibberellins native to pea, GA9 had no effect whereas GA20 had a moderate senescence-delaying effect. [3H]GA9 metabolism in intact leaves of G2 plants was inhibited by LD and was restored by placing the plants back in SD. Leaves of photoperiod-insensitive lines (I-types) metabolized GA9 readily regardless of photoperiod, but the metabolites differed qualitatively from those in G2 leaves. A polar GA9 metabolite, GAE, was found only in G2 plants in SD. The level of GA-like substances in methanol extracts from G2 plants dropped about 10-fold after the plants were moved from SD to LD; it was restored by transferring the plants back to SD. A polar zone of these GA-like materials co-chromatographed with GAE. It is suggested that a polar gibberellin is synthesized by G2 plants in SD; this gibberellin promotes shoot growth and meristematic activity in the shoot apex, preventing senescence.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Manuelle Medizin 38 (2000), S. 342-345 
    ISSN: 1433-0466
    Keywords: Schlüsselwörter Kraniomandibularsystem ; Bewegungssystem ; Testverfahren aus manueller Medizin ; Chirotheraphie ; Osteopathie ; Effekte kieferorthopädischer/zahnärztlicher Therapie ; Keywords Craniomandibular system ; Musculoskeletal system ; Testing methods manual medicin ; Chirotherapy ; Osteopathy ; Effects of dental therapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Abstract The craniomandibular system has an outstanding position within the musculoskeletal system. This is widely accepted by manual medicine, chirotherapy and osteopathy. Craniomandibular dysfunction has dominant effects on the musculoskeletal system (primary lesion). Five testing methods of manual medicine are described for examining this influence rapidly and reproducibly. In the same way, dentists can check to see whether their therapy has any negative influence on the musculoskeletal system with regard dysfunction or a positive influence on regular function.
    Notes: Zusammenfassung Das kraniomandibuläre System hat innerhalb des muskuloskeletalen Systems eine Sonderstellung. Von der manuellen Medizin, der Chirotherapie und Osteopathie wird das allgemein akzeptiert. Funktionsstörungen aus diesem System wirken sich dominant auf das Bewegungssystem aus (primäre Läsion). Beschrieben werden 5 bewährte Testverfahren aus der manuellen Medizin, die diese Störeinflüsse schnell und exakt reproduzierbar nachweisen. Entsprechend lassen sich kieferorthopädische und zahnärztliche Aufbissbehelfe und Bissnahmen prüfen. Verursachen sie bei den beschriebenen Testverfahren keine pathologischen Ergebnisse, so können sie als funktionsgerecht gelten.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-2048
    Keywords: Apical senescence ; Pisum ; Photomorphogenesis ; Grafting ; Growth regulators ; Senescence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Apical senescence in an early flowering line of pea, G2, is greatly delayed by short days. This behavior is controlled by two dominant genes. Apical senescence of ungrafted, insensitive (I) lines is unaffected by photoperiod. When I-type scions with one of the two required genes were grafted onto G2, apical senescence of the I-type was delayed in short days, but not in long days. Flowering of the I-type was unaffected. The apex of the G2 stock was unaffected as well. Apical senescence of an I-type line lacking both photoperiod genes was not delayed when grafted on G2 in short days. It is concluded that G2 plants grown in short days produce a graft-transmissible factor which delays apical senescence of photoperiodically insensitive lines.
    Type of Medium: Electronic Resource
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