Table 1.

Half-lives of nifH transcripts in the presence of rifampin or chloramphenicol during the L period (1000 to 2200) inTrichodesmium sp. strain IMS 101 culturea

Time when inhibitor addedHalf-life (min) with:
RifampinChloramphenicol
10006035
16007452
180045NAb
  • a The final concentration for both rifampin and chloramphenicol was 50 μg/ml. See Fig. 8 for corresponding Northern blot analysis of nifH transcripts.

  • b NA, not analyzed.