Uniparental inheritance of a chloroplast Photosystem II polypeptide controlling herbicide binding

Sylvia Darr, V. Souza Machado, Charles J. Arntzen

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


The ability of atrazine to inhibit Photosystem II electron transport and the rate of electron transfer from the primary to the secondary quinone electron acceptors in the Photosystem II complex were examined in triazine-resistant and -susceptible parental biotypes of Brassica campestris L. and their F1 progeny derived from reciprocal crosses. The lack of herbicide inhibitory activity and the presence of functional properties which decreased the Q- to B electron transport rate constant were inherited in parallel through the maternal parent. We conclude that the herbicide receptor protein is uniparentally inherited through the female parent. These data are discussed in relation to other studies which indicate that the binding site is a 32 000-dalton polypeptide which determines the functional properties of B (the secondary Photosystem II electron acceptor).

Original languageEnglish (US)
Pages (from-to)219-228
Number of pages10
JournalBBA - Bioenergetics
Issue numberC
StatePublished - 1981


  • (Chloroplast membrane)
  • Atrazine
  • Electron transport
  • Herbicide receptor
  • Photosystem II
  • Plastoquinone

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Cell Biology


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