Journal of Applied Phycology

, Volume 12, Issue 3–5, pp 285–290 | Cite as

The effect of reducing light-harvesting pigment on marine microalgal productivity

  • Yuji Nakajima
  • Ryohei Ueda


The productivity was evaluated of a strain of Chlamydomonas perigranulata isolated from the RedSea. A mutant with small light-harvesting pigments(LHC-1) was obtained by UV mutagenesis. Thechlorophylls content of the wild type was twice ashigh as that of LHC-1, and the initial slope of thephotosynthesis-irradiance curve was higher in the wildtype. However, the maximum photosynthetic activity ona per cell basis was almost the same. It isconcluded that LHC-1 is a mutant with lesslight-harvesting pigment (LHP) than the wild type. Aspreviously reported, the mutant with lower LHP contenthas a higher productivity in a continuous culturesystem, so we compared the productivity of the wildtype and the mutant. The maximum productivity of LHC-1was 1.5 times higher than that of the wild type. Itis suggested that the technique of reducing thecontent of light-harvesting pigment should be madeavailable for other organisms.

algal culture Chlamydomonas perigranulata light-harvesting pigment photosynthesis 


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Copyright information

© Kluwer Academic Publishers 2000

Authors and Affiliations

  • Yuji Nakajima
    • 1
    • 2
  • Ryohei Ueda
    • 1
    • 2
  1. 1.Biotechnology Laboratory, Advanced Technology Research CenterMitsubishi Heavy Industries, LtdYokohamaJapan
  2. 2.Research CenterMitsubishi Heavy Industries, LtdYokohamaJapan

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