以Nd3+诱导番茄叶,测定其对番茄叶挥发性物质组成和含量的影响. 结果表明,番茄叶经60 mg·L-1 Nd3+ 诱导120 h后,挥发性物质的总含量较对照组的增加57%;氧合脂类、萜类化合物、芳香族化合物的含量分别较对照组的提高73%,38%和32%. 含量最高组分(E)-2-己烯醛较对照组的提高74%. 含量显著性提高的组分还包括萜类化合物的β-水芹烯和α-石竹烯,芳香族化合物的丁子香酚,分别较对照组的提高129%,65%和309%. 不同浓度的Nd3+均可促进挥发性物质的释放,且随诱导时间呈不同的变化趋势. 一定浓度的Nd3+还可诱导番茄叶活性氧的释放以及几丁质酶和β-1,3-葡聚糖酶活力的提高. 说明Nd3+可能通过提高番茄叶挥发性物质的含量,以增强其抗病能力.
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