Morphological and chemotaxonomic studies on Laurencia composita and L. okamurae (Ceramiales, Rhodophyta)

DOI Web Site 被引用文献2件
  • Michio Masuda
    Division of Biological Sciences, Graduate School of Science, Hokkaido University, Sapporo 060, Japan
  • Tsuyoshi Abe
    Division of Biological Sciences, Graduate School of Science, Hokkaido University, Sapporo 060, Japan
  • Teruaki Suzuki
    Division of Material Science, Graduate School of Environmental Earth Science, Hokkaido University, Sapporo 060, Japan
  • Minoru Suzuki
    Division of Material Science, Graduate School of Environmental Earth Science, Hokkaido University, Sapporo 060, Japan

書誌事項

公開日
1996-11
DOI
  • 10.2216/i0031-8884-35-6-550.1
公開者
Informa UK Limited

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説明

Abstract Two red algal species, Laurencia composita Yamada and L. okamurae Yamada (Rhodomelaceae, Ceramjales), that grow in Japanese waters have often been confused with each other being similar in gross morphology. They can be morphologically distinguished by branching pattern (polystichous in L. composita and tristichous in L. okamurae) and the frequency of lenticular thickenings in the walls of medullary cells (rare in L. composita and frequent in L. okamurae). The two species have different ecological preferences: L. composita grows in the upper to mid-intertidal zones exposed to higher levels of desiccation, while L. okamurae grows in the lower intertidal and upper subtidal zones. The two species can also be distinguished by their characteristic secondary metabolites: L. composita produces chamigrane-type sesquiterpenoids such as prepacifenol, pacifenol, prepacifenol epoxide and johnstonol, whereas L. okamurae produces cyclolaurane-type sesquiterpenoids such as laurinterol and debromolaurinterol. Fur...

収録刊行物

  • Phycologia

    Phycologia 35 (6), 550-562, 1996-11

    Informa UK Limited

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