Para que serve a cafeína em plantas?
Caffeine is found in more than sixty plant species and as for many other alkaloids its physiological role is unknown. Scanty data from the literature on the subject refer to tea (Camellia sinensis) and coffee (Coffea spp), and in most cases suggest caffeine as being either an allelopathic agent or an anti-herbivory compound. Through comparing such data with other information not specifically related to the physiological role of caffeine, we dismiss the role of caffeine as an allelopathic or anti-herbivory compound. The role of caffeine as a nitrogen-storage compound and its involvement in resistance against diseases is also discussed. In addition, new data are presented showing the lack of a relationship between caffeine and DNA methylation in young coffee leaves.
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| Format: | biblioteca |
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| Subjects: | COFFEA, CAMELLIA SINENSIS, ALELOPATIA, ADN, CAFEINA, RESISTENCIA A LA ENFERMEDAD, RESISTENCIA A LAS PLAGAS, |
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