Abstract:
Polyamines acid-extracted from the buds, roots, stems, leaves, flowers, fruits and seeds of five
Solanales crop plants were analyzed by high-performance liquid chromatography and gas
chromatography. Endogenous concentrations of polyamines per wet weight of the organs were
calculated. Putrescine, spermidine and spermine were the major common polyamines of the
Solanales organs. Homospermidine and aminopropylhomospermidine were detected abundantly
in tomato and eggplant roots. Diaminopropane, cadaverine, norspermidine, norspermine and
thermospermine were detected in a minor polyamine in some organs. Skins of tomato and
eggplant fruits showed lower polyamine levels, whereas skins of potato tubers and sweet potato
tuberous roots showed higher polyamine levels. The root-knot galls caused by a nematode in the
tomato and eggplant roots, and the tuber-powdery scabs caused by a cercozoan in potato tuber
were increased in putrescine and spermidine (and putrescine) contents.
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