Induced responses in stilbenes and terpenes in fertilized Norway spruce after inoculation with blue-stain fungus, Ceratocystis polonica
Induced responses in stilbenes and terpenes in fertilized Norway spruce after inoculation with blue-stain fungus, Ceratocystis polonica
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接种蓝染真菌 Ceratocystis polonica 后，受精挪威云杉中二苯乙烯和萜烯的诱导反应
DOI：
10.1007/s004680000082
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
P. Niemelä
中科院分区：
文献类型：
--
作者：
H. Viiri;E. Annila;V. Kitunen;P. Niemelä
抽象的。在针叶树中，小蠹和相关病原真菌的攻击引起诱导的伤口反应，其特征在于抗真菌化合物的积累和有助于伤口愈合的形态变化。在这篇文章中，挪威云杉韧皮部的二苯乙烯和萜烯的浓度进行了监测，诱导伤口反应的症状有关的施肥引起的营养条件的变化。成熟的挪威云杉小区施肥与N，P或NPK。施肥一年后，人工感染的树木Ceratocystis polonica，一种致病真菌与树皮甲虫Ips typographus。二苯乙烯类化合物对真菌接种的反应主要是定性的。在韧皮部中的二苯乙烯苷的浓度下降，并在真菌接种的部位附近，二苯乙烯苷的频率低于机械受伤或未受伤的韧皮部。相应的二苯乙烯苷元最常见的反应病变内。施氮处理植株接种部位附近二苯乙烯苷元含量显著低于未施氮处理植株。真菌接种引起了强烈的萜烯定量反应。韧皮部的总萜烯浓度显着增加，几乎100倍更大的接种部位附近相比，本构值。施氮显著降低了接种点附近的总萜烯和总二苯乙烯苷元浓度。因此，施氮可能会降低挪威云杉抵御真菌病原体的能力。
Abstract. In conifers, attacks by bark beetles and associated pathogenic fungi cause an induced wound response, which is characterized by accumulation of antifungal compounds and morphological changes that aid wound healing. In this article the stilbene and terpene concentrations of Norway spruce phloem were monitored as symptoms of induced wound responses in relation to changed nutrient conditions caused by fertilization. Plots of mature Norway spruce were fertilized with N, P or NPK. One year after fertilization the trees were artificially infected with Ceratocystis polonica, a pathogenic fungus associated with the bark beetle Ips typographus. The response of stilbenes to fungal inoculation was mainly qualitative. The concentration of stilbene glycosides in the phloem decreased, and in the immediate vicinity of the site of fungal inoculation, stilbene glycosides were less frequent than in mechanically wounded or unwounded phloem. Corresponding stilbene aglycones were most frequent inside the reaction lesion. The concentration of total stilbene aglycones near the inoculation site was significantly lower in N-fertilized trees than in unfertilized trees. Fungal inoculation caused a strong quantitative response in terpenes. The total terpene concentration of the phloem increased significantly, to almost 100 times greater near the inoculation site compared to the constitutive values. N fertilization significantly reduced the total terpene and total stilbene aglycone concentrations near the inoculation sites. Thus, N fertilization may reduce the ability of Norway spruce to defend itself against fungal pathogens.