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  • 1
    Electronic Resource
    Electronic Resource
    Phytochrome evolution: Phytochrome genes in ferns and mosses (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 91 (1994), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: We have isolated phytochrome genes from the moss Physcomitrella, the fern Psilotum and PCR-generated phytochrome sequences from a few other ferns. The phytochrome gene of the moss Physcomitrella turned out not to contain the aberrant C-terminal third of the phytochrome from the moss Ceratodon, but the transmitter module-like sequences found in other phytochromes. A series of different phytochrome genes was detected in Psilotum. Differences between the amino acid sequences derived from them ranged from about 5 to more than 22%. Some of these genes are likely pseudogenes. Analysis by phylogenetic tree constructions revealed that higher and lower plant phytochromes evolved with different velocities. Lower plant phytochromes form a separate family characterized by a high degree of similarity. The amino acid differences between phytochrome types detected in a single species of higher plants are about two-fold higher than the differences between phytochromes of species of lower plants belonging to different divisions (Physcomitrella and Selaginella). Future studies on phytochrome sequences may eventually also throw light on the significance of Psilotum in the evolution of vascular plants.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1994.tb00425.x
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  • 2
    Electronic Resource
    Electronic Resource
    Phytochrome — all regions marked by a set of monoclonal antibodies reflect conformational changes (1989)
    Springer
    Planta 177 (1989), S. 511-514 
    Details
    ISSN: 1432-2048
    Keywords: Avena (phytochrome) ; Conformational change (phytochrome) ; Monoclonal antibody (phytochrome) ; Zea (phytochrome)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Monoclonal antibodies to defined locations on six regions of the phytochrome molecule (from Avena sativa L. or Zea mays L.) were each found to have a different affinity toward the farred-absorbing form of phytochrome (Pfr) and the red-absorbing form (Pr). The differences were small, but were consistently shown by antibodies which bind to the vicinity of the aminoterminus, the carboxylterminus and to sequences in between. It seems that the conformational differences between Pr and Pfr extend over the whole molecule in as far as it is represented by these regions and the antibodies binding to them.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00392619
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    Paper (German National Licenses)
    Fulltext
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