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  • 1
    Electronic Resource
    Electronic Resource
    Plant regeneration from protoplasts ofVicia narbonensis via somatic embryogenesis and shoot organogenesis (1996)
    Springer
    Plant cell reports 16 (1996), S. 22-25 
    Details
    ISSN: 1432-203X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Protoplasts ofVicia narbonensis isolated from epicotyls and shoot tips of etiolated seedlings were embedded in 1.4% sodium-alginate at a final density of 2.5×105 protoplasts/ml and cultivated in Kao and Michayluk-medium containing 0.5 mg/I of each of 2,4- dichlorophenoxyacetic acid, naphthylacetic acid and 6 -benzylaminopurine. A division frequency of 36% and a plating efficiency of 0.40–0.5% were obtained. Six weeks after embedding, protoplast-derived calluses were transferred onto gelrite-solidified Murashige and Skoog-media containing various growth regulators. Regeneration of plants was achieved via two morphologically distinguishable pathways. A two step protocol (initially on medium with a high auxin concentration followed by a culture phase with lowered auxin amount) was used to regenerate somatic embryos, whereas cultivation on medium containing thidiazuron and naphthylacetic acid resulted in shoot morphogenesis. Mature plants were recovered from both somatic embryos as well as from thidiazuron-induced shoots.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01275442
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Thidiazuron-induced plant regeneration from protoplasts of Vicia faba cv. Mythos (1995)
    Springer
    Plant cell reports 15 (1995), S. 164-169 
    Details
    ISSN: 1432-203X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Protoplasts of 10 cultivars of V. faba were isolated from etiolated shoot-tips and tested for their regeneration capacity. After purification, protoplasts were embedded in sodium alginate and cultivated in the medium of Kao and Michayluk (1975) containing 0.5 mg·1−1 of each 2,4-dichlorophenoxyacetic acid, naphthylacetic acid and 6-benzylaminopurine. Depending on cultivar, division frequencies of up to 40% were obtained. Six weeks after embedding, protoplast-derived calluses were transferred to Gelrite-solidified media with different combinations of growth regulators. A two step protocol (auxin high/low) was tested for its ability to induce somatic embryogenesis. The formation of globular structures was observed, but no embryo formation could be achieved. In contrast, cultivation of protocalluses on medium supplemented with thidiazuron resulted in shoot development in cultivar Mythos. To generate mature plants, the shoots were grafted onto young seedlings. In order to optimize the in vitro-conditions, different concentrations of thidiazuron alone or in combination with naphthylacetic acid were tested, showing that an increase of thidiazuron and the addition of naphthylacetic acid positively affects both the viability of protocalluses and the regeneration frequency.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00193712
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Plant regeneration from protoplasts of Vicia narbonensis via somatic embryogenesis and shoot organogenesis (1996)
    Springer
    Plant cell reports 16 (1996), S. 22-25 
    Details
    ISSN: 1432-203X
    Keywords: Abbreviations:BAP: 2,4-D, 2,4-dichlorophenoxyacetic acid; BA, 6-benzylaminopurine; CH, casein hydrolysate; FDA, fluorescein diacetate; IBA, indole-3-butyric acid; KM, Kao and Michayluk's medium (1975); MS, Murashige and Skoog's medium (1962); NAA, maphthylacetic acid; TDZ, thidiazuron
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Protoplasts of Vicia narbonensis isolated from epicotyls and shoot tips of etiolated seedlings were embedded in 1.4% sodium-alginate at a final density of 2.5×105 protoplasts/ml and cultivated in Kao and Michayluk-medium containing 0.5 mg/l of each of 2,4-dichlorophenoxyacetic acid, naphthylacetic acid and 6-benzylaminopurine. A division frequency of 36% and a plating efficiency of 0.4–0.5% were obtained: Six weeks after embedding, protoplast-derived calluses were transferred onto gelrite-solidified Murashige and Skoog-media containing various growth regulators. Regeneration of plants was achieved via two morphologically distinguishable pathways. A two step protocol (initially on medium with a high auxin concentration followed by a culture phase with lowered auxin amount) was used to regenerate somatic embryos, whereas cultivation on medium containing thidiazuron and naphthylacetic acid resulted in shoot morphogenesis. Mature plants were recovered from both somatic embryos as well as from thidiazuron-induced shoots.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002990050168
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Cloning and expression of amino acid transporters from broad bean (1999)
    Springer
    Plant molecular biology 41 (1999), S. 259-268 
    Details
    ISSN: 1573-5028
    Keywords: amino acid transport ; carrier ; expression analysis ; Vicia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract This work describes the isolation of a full-length (VfAAP2) and three partial amino acid transporter genes (VfAAPa, VfAAPb, VfAAPc) from broad bean (Vicia faba L.). The function of VfAAP2 was tested by heterologous expression in a yeast mutant deficient in proline uptake. VfAAP2 mediates proton-dependent proline uptake with an apparent Km of about 1 mM. Analysis of substrate specificity by competition experiments showed that aromatic amino acids, neutral aliphatic acids and L-citrulline are the best competitors, whereas basic amino acids do not compete with proline. Northern analysis indicates that all VfAAPs exhibit different patterns of expression. VfAAP2 is most strongly expressed in the stem and at a lower level in sink leaves and pods. VfAAPa, VfAAPb and VfAAPc are most strongly expressed in the flowers, but their expression in the other organs varies.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006321221368
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    Paper (German National Licenses)
    Fulltext
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