Different endogenous cytokinins between male and female Mercurialis annua L. |
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Authors: | B. Dauphin-Guerin G. Teller B. Durand |
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Affiliation: | (1) Biologie Végétale, Université d'Orléans, F-45045 Orleans Cedex, France;(2) Laboratoire de Spectrométrie de Masse, Université Louis Pasteur, F-67008 Strasbourg Cedex, France |
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Abstract: | The endogenous pool of cytokinin metabolites during sexual differentiation of Mercurialis annua L. was studied with a computerized gas-chromatography-mass spectrometry system. Certain metabolites were common to both sexes: ribosides (isopentenyl-adenosine, ribosylzeatin) and the nucleotide of I6-Ade. Zeatin could be detected only in females while its nucleotide was present in males. The results were obtained with differentiating apices and whole plants. The high Z concentration and the low level of its nucleotide are related to the absence of two dominant complementary genes, determining maleness. Study of the regulation of cytokinin metabolism now seems possible.Abbreviations IPA isopentenyl adenosine - I6-Ade isopentenyl adenine - Z zeatin - RZ ribosylzeatin |
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Keywords: | Cytokinin metabolism Mercurialis Sexual differentiation |
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