Inhibition of chloroplast ribosome formation by N,N-bis(phosphonomethyl)glycine

S. M. Croft, C. J. Arntzen, L. N. Vanderhoef, C. S. Zettinger

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Abstract

Foliar application of an experimental plant growth regulator, N,N-bis(phosphonomethyl)glycine (glyphosine) caused chlorosis of emerging leaves of maize seedlings. These bleached leaf segments had reduced levels of chloroplastic 70-S ribosomes and chloroplastic ribosomal RNA. In the same segments, there was no effect on the level of 80-S cytoplasmic ribosomes. Ultrastructural studies showed that chloroplasts in these tissues had reduced levels of grana stacking. Glyphosine had no effects on the light-induced electron transport and phosphorylation activities of isolated chloroplasts.

Original languageEnglish (US)
Pages (from-to)211-217
Number of pages7
JournalBBA Section Nucleic Acids And Protein Synthesis
Volume335
Issue number2
DOIs
StatePublished - Jan 31 1974

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ASJC Scopus subject areas

  • Medicine(all)

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