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Stimulation ofDaucus carota somatic embryogenesis by inhibitors of ethylene synthesis: cobalt and nickel

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Abstract

The effects of Co2+ and Ni2+ on ethylene production and somatic embryogenesis by carrot (Daucus carota L.) cell cultures were studied. At concentrations of 10 μM to 50 μM, CoCl2 effectively inhibited ethylene production by embryogenic cultures and significantly stimulated somatic embryogenesis. The observed increase of embryo number was proportional to the inhibition level of ethylene production. However, CoCl2 had no effect when Ethephon was supplied. Nickel also reduced ethylene production, but to a slightly lesser extent than CoCl2, bringing about a lower increase in the number of somatic embryos. The role of ethylene on somatic embryogenesis is discussed.

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Abbreviations

ACC:

1-aminocyclopropane-1-carboxylic acid

2,4-D:

2,4-dichlorophenoxyacetic acid

SAM:

S-adenosyl-methionine

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Authors and Affiliations

  1. Laboratoire de Biotechnologie Végétale, Ecole Nationale Supérieure Agronomique, F-31076, Toulouse Cédex, France

    J. P. Roustan, A. Latche & J. Fallot

Authors
  1. J. P. Roustan
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  2. A. Latche
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  3. J. Fallot
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Communicated by A. M. Boudet

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Roustan, J.P., Latche, A. & Fallot, J. Stimulation ofDaucus carota somatic embryogenesis by inhibitors of ethylene synthesis: cobalt and nickel. Plant Cell Reports 8, 182–185 (1989). https://doi.org/10.1007/BF00716836

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  • DOI: https://doi.org/10.1007/BF00716836

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