CACHONINA ILLDEFINA SP. NOV. (DINOPHYCEAE): CHLOROPLAST TUBULES AND DEGENERATION OF THE PYRENOID

Eliot M Herman, Beatrice M. Sweeney

Research output: Contribution to journalArticle

18 Scopus citations

Abstract

A new species of the dinoflagellate genus Cachonina, C. illdefina sp. nov., was isolated from a red tide off El Capitan State Park, Santa Barbara County, California, in October 1973. The organism is light yellowgreen in color with deeply incised girdle and sulcal grooves. Electron microscopy of the organism, revealed a typical dinokaryotic nucleus. The chloroplasts of the organism are connected, and often contain microtubule‐like elements, 25 nm diam. The pyrenoids are characterized as excluding chloroplast thylakoids and ribosomes, although containing an amorphous matrix and numerous tubular invaginations from the cytoplasm. The pyrenoids become detached from the chloroplasts and degenerate into small vesicles. C. illdefina is not bioluminescent.

Original languageEnglish (US)
Pages (from-to)198-205
Number of pages8
JournalJournal of Phycology
Volume12
Issue number2
DOIs
StatePublished - 1976
Externally publishedYes

Keywords

  • Cachonina illdefina sp. nov.
  • chloroplast tubules
  • dinoflagellate
  • pyrenoid degeneration
  • red tide

ASJC Scopus subject areas

  • Aquatic Science
  • Plant Science

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