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A survey of translocation in laminariales (Phaeophyceae)

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Abstract

A survey of translocation of photoassimilates in 13 genera of Laminariales is presented. All showed long-distance transport of 14C-labeled products from mature source tissue to meristematic sinks (haptera and intercalary growing regions). In plants with several laminae forming one frond, older laminae may provide assimilates for the growth of younger ones, and in Macrocystis spp., where fronds of different ages and developmental stage arise from a common holdfast, mature fronds initiate and support new fronds. Translocation velocities vary from species to species but are in the range of 55 to 570 mm/h. The results strongly support the hypothesis that Laminariales in general have an effective translocation system, on which their thallus growth depends.

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Authors and Affiliations

  1. Botanisches Institut der Universität zu Köln, Köln, Germany (FRG)

    K. Schmitz

  2. Department of Biological Sciences, Simon Fraser University, Burnaby, British Columbia, Canada

    C. S. Lobban

Authors
  1. K. Schmitz
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  2. C. S. Lobban
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Communicated by O. Kinne, Hamburg

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Schmitz, K., Lobban, C.S. A survey of translocation in laminariales (Phaeophyceae). Mar. Biol. 36, 207–216 (1976). https://doi.org/10.1007/BF00389281

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  • DOI: https://doi.org/10.1007/BF00389281

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