The case for sporadic cyanogenic glycoside evolution in plants

IF 8.3 2区 生物学 Q1 PLANT SCIENCES Current opinion in plant biology Pub Date : 2024-07-31 DOI:10.1016/j.pbi.2024.102608
Raquel Sánchez-Pérez , Elizabeth HJ. Neilson
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Abstract

Cyanogenic glycosides are α-hydroxynitrile glucosides present in approximately 3000 different plant species. Upon tissue disruption, cyanogenic glycosides are hydrolyzed to release toxic hydrogen cyanide as a means of chemical defense. Over 100 different cyanogenic glycosides have been reported, with structural diversity dependent on the precursor amino acid, and subsequent modifications. Cyanogenic glycosides represent a prime example of sporadic metabolite evolution, with the metabolic trait arising multiple times throughout the plant lineage as evidenced by recruitment of different enzyme families for biosynthesis. Here, we review the latest developments within cyanogenic glycoside biosynthesis, and argue possible factors driving sporadic evolution including shared intermediates and crossovers with other metabolic pathways crossovers, and metabolite multifunctionality beyond chemical defense.

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植物中零星氰苷进化的案例。
生氰苷是存在于大约 3000 种不同植物中的α-羟腈葡糖苷。组织受到破坏时,氰苷会水解释放出有毒的氰化氢,作为一种化学防御手段。已报道的氰苷有 100 多种,其结构多样性取决于前体氨基酸和随后的修饰。生氰苷是零星代谢物进化的一个典型例子,其代谢特征在整个植物品系中多次出现,这可以通过招募不同的酶家族进行生物合成得到证明。在此,我们回顾了氰苷类生物合成的最新进展,并论证了驱动零星进化的可能因素,包括与其他代谢途径交叉的共享中间体和交叉,以及代谢物在化学防御之外的多功能性。
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来源期刊
Current opinion in plant biology
Current opinion in plant biology 生物-植物科学
CiteScore
16.30
自引率
3.20%
发文量
131
审稿时长
6-12 weeks
期刊介绍: Current Opinion in Plant Biology builds on Elsevier's reputation for excellence in scientific publishing and long-standing commitment to communicating high quality reproducible research. It is part of the Current Opinion and Research (CO+RE) suite of journals. All CO+RE journals leverage the Current Opinion legacy - of editorial excellence, high-impact, and global reach - to ensure they are a widely read resource that is integral to scientists' workflow.
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