Phototactic chloroplast displacement in the photosynthetic mutant, Lemna paucicostata strain 1073

A. Witztum, H. B. Posner, R. A. Gower

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

The photosynthetic mutant, strain 1073, of Lemna paucicostata Torr. (L. perpusilla Hegelm.) which has a block in the electron transport chain between plastoquinone and cytochrome f is capable of light-induced chloroplast displacement movements. At 8000-14 000 lx, chloroplasts of the mutant move from their position adjacent to the inner periclinal wall of the mesophyll cells to the anticlinal walls, i.e. along those walls parallel to the direction of the light. Light does not appear to enhance respiration of the photosynthetic mutant or of the wild type strain (6746). These and other results support the idea that chloroplast displacement in light is not solely the result of light effects on photosynthesis and respiration.

Original languageEnglish
Pages (from-to)1-4
Number of pages4
JournalAnnals of Botany
Volume44
Issue number1
DOIs
StatePublished - 1 Jan 1979
Externally publishedYes

Keywords

  • Chloroplast displacement
  • Lemna paucicostata Torr.
  • Photosynthetic mutant
  • Phototaxis

ASJC Scopus subject areas

  • Plant Science

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