Triazine Resistance in Phalaris Paradoxa: Physiological and Molecular Analyses

Mordechay Schönfeld, Tuvia Yaacoby, Adi Ben-Yehuda, Baruch Rubin, Joseph Hirschberg

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Triazine resistance in a mutant biotype of Phalaris paradoxa is accompanied by changes in the chlorophyll fluorescence induction curve, and by reduced quantum yield for electron transport, indicating altered photosystem II activity. H owever, light-saturated rates of electron transport in isolated chloroplasts, rates ofCO2; uptake in leaves and dry weight production of the triazine resistant biotype, are equal or superior to those of the wild type. A single mutation in the psbA gene, leading to a serine to glycine shift at position 264 of the thylakoid membrane 32 kDa QB protein, was found in the herbicide resistant mutant. The results indicate that triazine resistance is not necessarily linked to inferior photosynthetic and growth performance.

Original languageEnglish
Pages (from-to)779-782
Number of pages4
JournalZeitschrift fur Naturforschung - Section C Journal of Biosciences
Volume42
Issue number7-8
DOIs
StatePublished - 1 Aug 1987

Keywords

  • Chloroplast
  • Herbicide Resistance
  • Phalaris paradoxa
  • Photosynthesis
  • Photosystem II
  • psbA Gene

Fingerprint

Dive into the research topics of 'Triazine Resistance in Phalaris Paradoxa: Physiological and Molecular Analyses'. Together they form a unique fingerprint.

Cite this