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Photooxidation of Plastids Inhibits Transcription of Nuclear Encoded Genes in Rye (Secale cereale)

Dietrich Ernst and Katja Schefbeck
Plant Physiology
Vol. 88, No. 2 (Oct., 1988), pp. 255-258
Stable URL: http://www.jstor.org/stable/4271560
Page Count: 4
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Photooxidation of Plastids Inhibits Transcription of Nuclear Encoded Genes in Rye (Secale cereale)
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Abstract

Rye (Secale cereale cv Halo) seedlings treated with the herbicide Norflurazon SAN 9789 showed a reduced concentration of mRNA for the small subunit of ribulose-1,5-bisphosphate carboxylase and for the light-harvesting chlorophyll a/b protein. The inhibition of mRNA accumulation by Norflurazon occurred only in the presence of high light intensities and only after a period of days. The primary effect was an inhibition of the transcription rate that occurred within 1 day after exposure of the seedlings to light.

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