Detailed process of shell construction in the photosynthetic testate amoeba Paulinella chromatophora (euglyphid, rhizaria)

Mami Nomura, Takuro Nakayama, Ken Ichiro Ishida

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

Most euglyphids, a group of testate amoebae, have a shell that is constructed from numerous siliceous scales. The euglyphid Paulinella chromatophora has photosynthetic organelles (termed cyanelles or chromatophores), allowing it to be cultivated more easily than other euglyphids. Like other euglyphids, P. chromatophora has a siliceous shell made of brick-like scales. These scales are varied in size and shape. How a P. chromatophora cell makes this shell is still a mystery. We examined shell construction process in P. chromatophora in detail using time-lapse video microscopy. The new shell was constructed by a specialized pseudopodium that laid out each scale into correct position, one scale at a time. The present study inferred that the sequence of scale production and secretion was well controlled.

Original languageEnglish
Pages (from-to)317-321
Number of pages5
JournalJournal of Eukaryotic Microbiology
Volume61
Issue number3
DOIs
Publication statusPublished - 2014

Keywords

  • LysoTracker
  • cell covering
  • protist
  • siliceous scale
  • time-lapse video microscopy

ASJC Scopus subject areas

  • Microbiology

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