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首页> 外文期刊>Holzforschung >Accessing the natural variation of the abundances of major lignans in the heartwood of Taiwania cryptomerioides by ~1H-NMR and LC-MS profiling
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Accessing the natural variation of the abundances of major lignans in the heartwood of Taiwania cryptomerioides by ~1H-NMR and LC-MS profiling

机译：通过〜1H-NMR和LC-MS分析获得台湾隐心木心材中主要木脂素丰度的自然变化

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摘要

Lignans are major bioactive secondary metabolites, which are also formed in the heartwood (hW) of Taiwania (Taiwania cryptomerioides). Their biosynthesis pathways are complex and involve many enzymes and intermediates. To evaluate the extent of the genetic components leading to the variety of lignans in Taiwania hW, 35 Taiwania genotypes of four provenances were surveyed using the proton nuclear magnetic resonance (H-1-NMR) and liquid chromatography-mass spectrometry (LC-MS) analyses. The metabolite profiles were statistically evaluated by principal component analysis (PCA) and the general linear model (GLM). The broad-sense heritability (H-2) was further evaluated by linear mixed model (LMM) analysis. It was demonstrated that the genetic factor is the major contributor to the abundance of lignans, though the environmental factor also has some effect on it. Among the metabolites detected by H-1-NMR, lignans were the major compounds that exhibited high a H-2 (0.52-0.82), which was further verified by LC-MS. The conclusion is that H-1-NMR spectroscopy is suitable for quick screenings, predictions and semi-quantitation of lignans. The high H-2 is also indicative of the lignan abundances as traits that can be genetically modified to achieve a significant wood quality improvement.
机译：木质素是主要的生物活性次生代谢产物，也形成于台湾木（Taiwania cryptomerioides）的心材（hW）中。它们的生物合成途径很复杂，涉及许多酶和中间体。为了评估导致台湾桦木中木脂素多样性的遗传成分的程度，使用质子核磁共振（H-1-NMR）和液相色谱-质谱（LC-MS）调查了四种来源的35种台湾木霉的基因型。分析。通过主成分分析（PCA）和通用线性模型（GLM）对代谢产物进行统计学评估。通过线性混合模型（LMM）分析进一步评估了广义遗传力（H-2）。事实证明，遗传因素是木脂素丰富的主要因素，尽管环境因素对此也有一定影响。在通过H-1-NMR检测到的代谢产物中，木脂素是表现出高H-2（0.52-0.82）的主要化合物，LC-MS进一步证实了这一点。结论是H-1-NMR光谱适用于木脂素的快速筛选，预测和半定量。高的H-2值也表明木脂素丰度是可以通过基因改造获得显着改善木材品质的性状。

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