| | 1 | Author
| I. Perewoska, C. Vernotte, M. Picaud, C. Astier | Requires cookie* | | | Title
| Mutations in the Subunit of Photosystem II and Resistance to the Phenol Type Herbicide Ioxynil in Synechocystis PCC 6714 and 6803  | | | | Abstract
| Several herbicides block the photosystem II electron transfer because they compete with QB, the second stable electron acceptor o f photosystem II for binding to the D, subunit. We have previously isolated a mutant o f Synechocystis 6714 in which Asn is replaced by Thr at position 266 o f D, (G. Ajlani, I. Meyer, C. Vernotte, and Astier, FEBS Lett. 246, 2 0 7 -2 1 0 (1989)) and presenting resistance to ioxynil but not to D C M U . In this report we present selection, from this mutant, o f a double mutant with an additional substitution at position 264 (Ser by Ala). The sensitivity o f this mutant toward several herbicides is given and compared to those o f the mutants having only one substitution at 266 and one substitution at 264. It was also compared to a mutant o f Chlamydomonas having the same substitutions. This allows us to discuss the interaction o f various herbicides with the D , protein and to compare the herbicide binding niches o f Chlamydomonas and Synechocystis. | | | |
Reference
| Z. Naturforsch. 47c, 580—5 (1992); received March 13 1992 | | | |
Published
| 1992 | | | |
Keywords
| Cyanobacteria, Chlamydomonas, Herbicide-Resistant M utants, Photosynthesis, Sequence Analysis | | | |
Similar Items
| Find | | | DEBUG INFO
| | | | | TEI-XML for
| default:Reihe_C/47/ZNC-1992-47c-0580.pdf | | | | Identifier
| ZNC-1992-47c-0580 | | | | Volume
| 47 | |
|
