Effect of exogenous dopa and tyrosine on amaranthin synthesis and pigment type in Amaranthus |
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| Authors: | Christopher J. French Robert C. Pecket Harry Smith |
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| Affiliation: | Department of Botany, University of Manchester, Manchester 13, England |
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| Abstract: | The efrects of exogenously applied DOPA (l-3,4-dihydroxy-phenylalanine) and tyrosine on amaranthin synthesis under a variety of light conditions are described. A possible explanation for the light-sensitive period in development is suggested to be limitation of substrate in the less sensitive stages of development. A yellow pigment tentatively identified as a betaxanthin becomes apparent under exogenous DOPA feeding. |
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| Keywords: | Amaranthaceae love-lies-bleeding amaranthin effects of DOPA and tyrosine biosynthesis betalains. |
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