The effect of ethephon and adenine on purine alkaloid synthesis in suspension-cultured cells of Coffea arabica L
The effect of ethephon, an ethylene-releasing compound, was studied in cell suspension cultures of Coffea arabica cultivated either under photoperiod or in the dark. In darkness purine alkaloid production, especially the synthesis of the caffeine precursors 7-methylxanthine and theobromine, is increased. Cells cultivated under photoperiod are very sensitive to ethephon: low concentrations stimulate alkaloid formation whereas high amounts inhibit purine alkaloid and chlorogenic acid synthesis, both usually stimulated by light. When ethephon is added in combination with adenine, a widely accepted early precursor of purine alkaloid biosynthesis, a drastic stimulation of 7-methylxanthine and theobromine synthesis can be observed in the dark.
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1992
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| Subjects: | COFFEA ARABICA, CULTIVO DE CELULAS, ETEFON, ADENINA, PURINAS, ALCALOIDES, |
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KOHA-OAI-BVE:852232020-02-03T21:52:31ZThe effect of ethephon and adenine on purine alkaloid synthesis in suspension-cultured cells of Coffea arabica L 117254 Schulthess, B.H. 47288 Baumann, T.W. 1992The effect of ethephon, an ethylene-releasing compound, was studied in cell suspension cultures of Coffea arabica cultivated either under photoperiod or in the dark. In darkness purine alkaloid production, especially the synthesis of the caffeine precursors 7-methylxanthine and theobromine, is increased. Cells cultivated under photoperiod are very sensitive to ethephon: low concentrations stimulate alkaloid formation whereas high amounts inhibit purine alkaloid and chlorogenic acid synthesis, both usually stimulated by light. When ethephon is added in combination with adenine, a widely accepted early precursor of purine alkaloid biosynthesis, a drastic stimulation of 7-methylxanthine and theobromine synthesis can be observed in the dark.The effect of ethephon, an ethylene-releasing compound, was studied in cell suspension cultures of Coffea arabica cultivated either under photoperiod or in the dark. In darkness purine alkaloid production, especially the synthesis of the caffeine precursors 7-methylxanthine and theobromine, is increased. Cells cultivated under photoperiod are very sensitive to ethephon: low concentrations stimulate alkaloid formation whereas high amounts inhibit purine alkaloid and chlorogenic acid synthesis, both usually stimulated by light. When ethephon is added in combination with adenine, a widely accepted early precursor of purine alkaloid biosynthesis, a drastic stimulation of 7-methylxanthine and theobromine synthesis can be observed in the dark.COFFEA ARABICACULTIVO DE CELULASETEFONADENINAPURINASALCALOIDESPhysiologia Plantarum (Dinamarca) |
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COFFEA ARABICA CULTIVO DE CELULAS ETEFON ADENINA PURINAS ALCALOIDES COFFEA ARABICA CULTIVO DE CELULAS ETEFON ADENINA PURINAS ALCALOIDES |
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COFFEA ARABICA CULTIVO DE CELULAS ETEFON ADENINA PURINAS ALCALOIDES COFFEA ARABICA CULTIVO DE CELULAS ETEFON ADENINA PURINAS ALCALOIDES 117254 Schulthess, B.H. 47288 Baumann, T.W. The effect of ethephon and adenine on purine alkaloid synthesis in suspension-cultured cells of Coffea arabica L |
| description |
The effect of ethephon, an ethylene-releasing compound, was studied in cell suspension cultures of Coffea arabica cultivated either under photoperiod or in the dark. In darkness purine alkaloid production, especially the synthesis of the caffeine precursors 7-methylxanthine and theobromine, is increased. Cells cultivated under photoperiod are very sensitive to ethephon: low concentrations stimulate alkaloid formation whereas high amounts inhibit purine alkaloid and chlorogenic acid synthesis, both usually stimulated by light. When ethephon is added in combination with adenine, a widely accepted early precursor of purine alkaloid biosynthesis, a drastic stimulation of 7-methylxanthine and theobromine synthesis can be observed in the dark. |
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| topic_facet |
COFFEA ARABICA CULTIVO DE CELULAS ETEFON ADENINA PURINAS ALCALOIDES |
| author |
117254 Schulthess, B.H. 47288 Baumann, T.W. |
| author_facet |
117254 Schulthess, B.H. 47288 Baumann, T.W. |
| author_sort |
117254 Schulthess, B.H. |
| title |
The effect of ethephon and adenine on purine alkaloid synthesis in suspension-cultured cells of Coffea arabica L |
| title_short |
The effect of ethephon and adenine on purine alkaloid synthesis in suspension-cultured cells of Coffea arabica L |
| title_full |
The effect of ethephon and adenine on purine alkaloid synthesis in suspension-cultured cells of Coffea arabica L |
| title_fullStr |
The effect of ethephon and adenine on purine alkaloid synthesis in suspension-cultured cells of Coffea arabica L |
| title_full_unstemmed |
The effect of ethephon and adenine on purine alkaloid synthesis in suspension-cultured cells of Coffea arabica L |
| title_sort |
effect of ethephon and adenine on purine alkaloid synthesis in suspension-cultured cells of coffea arabica l |
| publishDate |
1992 |
| work_keys_str_mv |
AT 117254schulthessbh theeffectofethephonandadenineonpurinealkaloidsynthesisinsuspensionculturedcellsofcoffeaarabical AT 47288baumanntw theeffectofethephonandadenineonpurinealkaloidsynthesisinsuspensionculturedcellsofcoffeaarabical AT 117254schulthessbh effectofethephonandadenineonpurinealkaloidsynthesisinsuspensionculturedcellsofcoffeaarabical AT 47288baumanntw effectofethephonandadenineonpurinealkaloidsynthesisinsuspensionculturedcellsofcoffeaarabical |
| _version_ |
1756059384104878080 |