Biosynthesis and genetic regulation of proanthocyanidins in plants.

Biosynthesis and genetic regulation of proanthocyanidins in plants.
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植物中原花青素的生物合成和遗传调控

DOI:
10.3390/molecules13102674
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发表时间:
2008-10-28
期刊:
Molecules (Basel, Switzerland)
影响因子:
--
通讯作者:
Duan CQ
Duan CQ
中科院分区:
其他
文献类型:
--
作者:
He F;Pan QH;Shi Y;Duan CQ

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原花青素(PA),也称为缩合单宁,是在植物中通过类黄酮途径以黄烷-3-醇单元的低聚物或多聚物形式合成的一组多酚次级代谢产物。由于PAs结构复杂、成分多样,植物中PAs的生物合成和调控研究直到最近几年才起步,但其合成机制的一些细节仍不清楚。本文旨在综述植物PAs的结构、生物合成途径关键酶的编码基因、转运因子、PAs生物合成的转录调控以及PAs的遗传操作的研究现状。会议还讨论了该领域的问题,包括催化PA聚合反应的最终“酶”的性质以及黄烷醇基本单元在体内组装的可能机制。
Proanthocyanidins (PAs), also known as condensed tannins, are a group of polyphenolic secondary metabolites synthesized in plants as oligomers or polymers of flavan-3-ol units via the flavonoid pathway. Due to their structural complexity and varied composition, only in the recent years has the study on the biosynthesis and regulation of PAs in plants taken off, although some details of the synthetic mechanism remain unclear. This paper aims to summarize the status of research on the structures of PAs in plants, the genes encoding key enzymes of biosynthetic pathway, the transport factors, the transcriptional regulation of PA biosynthesis and the genetic manipulation of PAs. The problems of this field were also discussed, including the nature of the final “enzyme” which catalyzes the polymerization reaction of PAs and the possible mechanism of how the elementary units of flavanols are assembled in vivo.
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发表时间: 2002-10-01
期刊: PLANT PHYSIOLOGY
影响因子: 7.4
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