Читать книгу Plant Nucleotide Metabolism - Hiroshi Ashihara - Страница 31

Some alkaloids, derived from purine and pyridine nucleotides, accumulate in specific plant species. Caffeine and nicotine (16) are typical nucleotide-derived alkaloids. For example, high concentrations of caffeine (∼2% d.w.) are found in tea (Ca. sinensis) and coffee (C. arabica) (Ashihara et al. 2017), while nicotine (∼1% d.w.) accumulates in tobacco (N. tabacum) (Saitoh et al. 1985). These alkaloids occur in more than 100 plant species. Detailed distribution and concentration of these alkaloids are described in purine and pyridine alkaloids in Parts V and VI.