Photosynthetic characteristics of a mutant of Chlamydomonas reinhardtii impaired in fatty acid desaturation in chloroplasts

Norihiro Sato, Kintake Sonoike, Mikio Tsuzuki, Akihiko Kawaguchi

研究成果: Article査読

10 被引用数 (Scopus)

抄録

The photosynthetic apparatus of a mutant of Chlamydomonas reinhardtii, hf-9, impaired in fatty acid desaturation at the ω6 position of fatty acids of chloroplasts was investigated. Measurement of photosynthetic activities revealed that both PS I and PS II activities were reduced in hf-9. However, little alteration occurred in the contents and subunit assemblies of the PS I complex, PS II core complex and light-harvesting complex of PS II. Lipids bound to these chlorophyll-protein (CP) complexes in hf-9 were shown to contain decreased levels of 16:4(4,7,10,13) and 18:3(9,12,15), with accumulation of 16:1(7) and 18:1(9), as compared with in the parent. Highly unsaturated fatty acids of chloroplast lipids may be required for the normal functions of PS I and PS II, by associating with these complexes.

本文言語English
ページ(範囲)112-118
ページ数7
ジャーナルBiochimica et Biophysica Acta - Bioenergetics
1274
3
DOI
出版ステータスPublished - 1996 6 13
外部発表はい

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Cell Biology

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