Tremendous chemical diversity is the hallmark of plants and is supported by highly complex biochemical machinery. Plant metabolic enzymes originated and were transferred from eukaryotic and prokaryotic ancestors and further diversified by the unprecedented rates of gene duplication and functionalization experienced in land plants. Unlike microbes, which have frequent horizontal gene transfer events and multiple inputs of energy and organic carbon, land plants predominantly rely on organic carbon generated from CO2 and have experienced very few, if any, gene transfers during their recent evolutionary history. As such, plant metabolic networks have evolved in a stepwise manner and on existing networks under various evolutionary constraints. This review aims to take a broader view of plant metabolic evolution and lay a framework to further explore underlying evolutionary mechanisms of the complex metabolic network. Understanding the underlying metabolic and genetic constraints is also an empirical prerequisite for rational engineering and redesigning of plant metabolic pathways. Expected final online publication date for the Annual Review of Plant Biology, Volume 72 is May 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

中文翻译：

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植物代谢的进化史。

巨大的化学多样性是植物的标志，并得到高度复杂的生化机制的支持。植物代谢酶起源于真核和原核祖先并从中转移，并由于陆地植物中前所未有的基因复制和功能化速率而进一步多样化。与微生物相比，微生物具有频繁的水平基因转移事件以及多种能量和有机碳输入，而陆地植物主要依赖于二氧化碳产生的有机碳，并且在最近的进化史中几乎没有（如果有的话）经历过基因转移。这样，植物代谢网络已在各种进化约束下逐步发展并在现有网络上进化。这篇综述旨在从更广泛的角度对植物代谢进化进行研究，并为进一步探索复杂代谢网络的潜在进化机制奠定了框架。理解潜在的代谢和遗传限制也是合理设计和重新设计植物代谢途径的经验先决条件。《植物生物学年度评论》第72卷的最终最终在线发布日期为2021年5月。有关修订的估算，请参见http://www.annualreviews.org/page/journal/pubdates。