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Identification of the structure and origin of thioacidolysis marker compounds for cinnamyl alcohol dehydrogenase deficiency in angiosperms

机译:鉴定被子植物肉桂醇脱氢酶缺乏症的硫代酸解标记化合物的结构和来源

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摘要

Molecular marker compounds, derived from lignin by the thioacidolysis degradative method, for cinnamyl alcohol dehydrogenase (CAD) deficiency in angiosperms have been structurally identified as indene derivatives. They are shown to derive from hydroxycinnamyl aldehydes that have undergone 8-O-4-cross-coupling during lignification. As such, they are valuable markers for ascertaining plant responses to various levels of CAD down-regulation. Their derivation illustrates that hydroxycinnamyl aldehydes incorporate into angiosperm lignins by endwise coupling reactions in much the same way as normal monolignols do, suggesting that the hydroxycinnamyl aldehydes should be considered authentic lignin precursors.
机译:通过硫代酸解降解法衍生自木质素的分子标记化合物,已在结构上鉴定为被子植物的肉桂醇脱氢酶(CAD)缺乏症。已显示它们衍生自木质素化过程中经过8-O-4-交叉偶联的羟基肉桂醛。因此,它们是确定植物对各种CAD下调反应的有价值的标志。他们的推导表明,羟基肉桂醛通过末端偶联反应掺入被子植物木质素中,其方式与正常的单木质醇基本相同,这表明羟基肉桂醛应被视为真正的木质素前体。

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