Quantification of total phenolic compounds in the heartwood of Picea abies using the Folin–Ciocalteu methods showed that concentrations of phenolic compounds in the heart‐ and sapwood of Picea abies varied, depending on the decay class to which boles were allocated. In the heartwood, mean phenolic concentration was 3.28 mg/g, compared with 2.44 mg/g in sapwood. Experiments using different concentrations of phenolic compounds showed that Heterobasidion parviporum is more sensitive to the effects of phenolic compounds found in sapwood, and less sensitive to phenolic compounds found in heartwood. The high concentration of phenolic compounds extracted from spruce stimulated the decomposition of wood by Armillaria ostoyae. This demonstrates the great ability of A. ostoyae to metabolize phenolic compounds. This is confirmed by natural conditions, where A. ostoyae attacks mainly sapwood and H. parviporum attacks heartwood of P. abies. In heartwood, the average antioxidant activity was approximately 10% higher than in the sapwood. The extraction process and presence of amino acids and reducing sugars might influence on the results. The results suggest that timber quality monitoring in spruce stands could be partly based on measurements of phenol compound concentrations in sapwood, as the technique enables prediction of the potential impact of decay fungi early in succession.

中文翻译：

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云杉木材中酚类化合物的浓度可作为对根病原体敏感性的指标

利用Folin–Ciocalteu方法对云杉心木心材中的总酚类化合物进行定量分析，结果表明，根据云杉分配的衰变类别，云杉心材和边材中的酚类化合物浓度会发生变化。在心材中，平均酚浓度为3.28 mg / g，而边材中为2.44 mg / g。使用不同浓度的酚类化合物进行的实验表明，细小异花异葱对边材中发现的酚类化合物的影响更为敏感，而对心材中发现的酚类化合物的敏感性较低。从云杉中提取的高浓度酚类化合物刺激了圆木蜜环菌分解木材。这证明了A.ostoyae具有很大的代谢酚类化合物的能力。这是由自然条件，这里证实A. ostoyae攻击主要是边材和H. parviporum攻击心材P.冷杉。在心材中，平均抗氧化活性比边材中高约10％。提取过程以及氨基酸和还原糖的存在可能会影响结果。结果表明，云杉林的木材质量监测可能部分基于边材中酚类化合物浓度的测量，因为该技术能够提前预测腐烂真菌的潜在影响。