| 查看: 556 | 回复: 0 | ||
[求助]
求翻译一篇文章的摘要
|
|
Investigation of terpene diversification across multiple sequenced plant genomes Plants produce an array of specialized metabolites, including chem- icals that are important as medicines, flavors, fragrances, pigments and insecticides. The vast majority of this metabolic diversity is untapped. Here we take a systematic approach toward dissecting genetic components of plant specialized metabolism. Focusing on the terpenes, the largest class of plant natural products, we investigate the basis of terpene diversity through analysis of multiple sequenced plant genomes. The primary drivers of terpene diversification are terpenoid synthase (TS) “signature” enzymes (which generate scaffold diversity), and cytochromes P450 (CYPs), which modify and further diversify these scaffolds, so paving the way for further downstream modifications. Our systematic search of sequenced plant genomes for all TS and CYP genes reveals that distinct TS/CYP gene pairs are found together far more commonly than would be expected by chance, and that certain TS/CYP pair- ings predominate, providing signals for key events that are likely to have shaped terpene diversity. We recover TS/CYP gene pairs for previously characterized terpene metabolic gene clusters and demonstrate new functional pairing of TSs and CYPs within pre- viously uncharacterized clusters. Unexpectedly, we find evidence for different mechanisms of pathway assembly in eudicots and monocots; in the former, microsyntenic blocks of TS/CYP gene pairs duplicate and provide templates for the evolution of new pathways, whereas in the latter, new pathways arise by mixing and matching of individual TS and CYP genes through dynamic genome rearrangements. This is, to our knowledge, the first docu- mented observation of the unique pattern of TS and CYP assembly in eudicots and monocots. |
回复此楼» 猜你喜欢
A期刊撤稿
已经有5人回复
-
临港实验室与上科大联培博士招生1名
已经有8人回复
-
26申博自荐
已经有7人回复
-
想换工作。大多数高校都是 评职称时 认可5年内在原单位取得的成果吗？
已经有4人回复
-
带资进组求博导收留
已经有9人回复
-
求助大佬们，伤口沾上了乙腈
已经有6人回复
-
最近几年招的学生写论文不引自己组发的文章
已经有9人回复
