|Authors: ||M. Saniewski, J. Ueda, K. Miyamoto, M. Horbowicz|
|Keywords: ||ethylene, gum, methyl jasmonate, tulip, Tulipa gesneriana|
It has been found that gum formation by methyl jasmonate (JA-Me) in leaves and stem of intact tulips is greatly stimulated by 1-aminocyclopropane-1-carboxylic acid (ACC) as a source of ethylene.
Analysis of cationic composition of ash from gums formed by JA-Me in tulip stem showed high content of calcium and potassium, and in smaller amounts of magnesium and sodium.
Tulip gums formed in leaves and stem induced by JA-Me + ACC treatment contained ca 16% of uronic acid (not identified), and remaining neutral sugar consisted of arabinose (ca 40%) and xylose (ca 60%). These results suggest that tulip gums consist of glucuronoarabinoxylan (GlcN:Ara:Xyl =1:2:3) in the presence of much amount of calcium and potassium.
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