Jasmonate-induced Changes in Flavonoid Metabolism in Barley (<i>Hordeum vulgare</i>) Leaves
作者:Atsushi ISHIHARA、Yuki OGURA、Shin-ichi TEBAYASHI、Hajime IWAMURA
DOI:10.1271/bbb.66.2176
日期:2002.1
independently of the JA treatment. The accumulation of these compounds was accompanied by a decrease in the saponarin (3) content. [8,9-(13)C]p-Coumaric acid and [2,3,4,5,6-(2)H]L-phenylalanine were effectively incorporated into the hydroxycinnamoyl moieties in 1 and 2, while the degree of incorporation of the labeled precursors into the saponarin part was small. These findings indicate that the hydroxycinnamoyl
研究了茉莉酸(JA)对大麦(Hordeum vulgare L.)次生代谢的影响。反相HPLC分析表明,在用JA处理过的大麦叶片中,特定化合物的含量增加了。将该化合物纯化,并通过光谱分析和碱水解鉴定为6'''-阿魏酰基皂苷(1)。还发现了相关的化合物6'''-芥子基沙番木苷(2),与JA处理无关地在切下的叶子中积累。这些化合物的积累伴随着皂苷(3)含量的减少。[8,9-(13)C] p-香豆酸和[2,3,4,5,6-(2)H] L-苯丙氨酸被有效地掺入1和2的羟基肉桂酰基部分中 而标记的前体掺入皂苷部分的程度很小。这些发现表明1和2的羟基肉桂酰基部分是通过苯丙烷途径从苯丙氨酸从头合成的,而皂苷部分主要由3的组成池提供。