Effect of Chloramphenicol on Mutants of Chlorella pyrenoidosa

  title={Effect of Chloramphenicol on Mutants of Chlorella pyrenoidosa},
  author={Franz-C. Czygan},
  • F. Czygan
  • Published 26 November 1966
  • Chemistry
  • Nature
IN some of the Chlorococcales the biosynthesis of secondary carotenoids (astaxanthin-esters and canthaxanthin1) and the complete decomposition of the primary pigments (chlorophyll a and b, carotenes and xanthophylls) in conditions of nitrogen deficiency can be inhibited by chloramphenicol2. With 5 × 10−5 molar chloramphenicol, growth is reduced to about 85 per cent of the normal rate. Chloramphenicol has no influence on the biosynthesis of the nitrate reducing enzymes in these algae3, and this… 

The ultrastructure of the outer cell wall-layer ofChlorella mutants with and without sporopollenin

These findings again strongly confirm the close connection between the synthesis of KC, SP, and the trilaminar structure of the outer CW-layer.

Physiologische und biochemische Beiträge zur Taxonomie der Gattung Chlorella

Heterotrophic mutants of Chlorella C-1.10 in an inorganic culture medium containing chloramphenicol show a stepwise reversion to the wild type (autotrophic, able to form secondary carotenoids and to liquefy gelatin).

Physiologische und biochemische Beiträge zur Taxonomie der Gattung Chlorella

75 out of 96 Chlorella strains from the culture collections at Göttingen, Cambridge, Bloomington/Indiana, and Bethesda/Maryland were found to be autotrophic, whereas 21 strains are heterotrophic.

Der Atmungsdefekt bei Hefezellen: eine kritische Betrachtung seiner Ursachen II. Der „RD-Zustand” (petite-Mutation) und verwandte Defekte†

In der Zeit seit dem Erscheinen des ersten Teiles dieses Sammelreferates (KRAEPELIN 1967) hat der Atmungsdefekt, soweit er sich auf die sogenannte plasmatische „petite-Mutation” bezieht, noch keine