Effects of glyphosate on shikimic acid accumulation in tobacco nicotiana tabacum cultivar xanthi cell cultures with low and high yields of cinnamoyl putrescines

Berlin, J.; Witte, L.

Zeitschrift fuer Naturforschung Section C Journal of Biosciences 36(3-4): 210-214

1981


Accession: 005305900

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Abstract
The flow of C through the shikimate pathway in tobacco cell cultures with low and high yields of cinnamoyl putrescines were studied by treating the cell cultures with glyphosate. In the presence of glyphosate the levels of free shikimic acid were increased more than 300-fold by both cell lines. Despite a normally 10-fold higher level of cinnamoyl putrescines, the high yielding cell line accumulated only 25% more free shikimic acid than the low yielding cell line. The increased formation of cinnamoyl putrescines was limited by the activity of phenylalanine ammonia lyase than by increased substrate supply caused by alterations in the shikimate pathway.