Biosynthesis of plant volatiles: nature's diversity and ingenuity.
Plant volatiles (PVs) are lipophilic molecules with high vapor pressure that serve various ecological roles. The synthesis of PVs involves the removal of hydrophilic moieties and oxidation/hydroxylation, reduction, methylation, and acylation reactions. Some PV biosynthetic enzymes produce multiple products from a single substrate or act on multiple substrates. Genes for PV biosynthesis evolve by duplication of genes that direct other aspects of plant metabolism; these duplicated genes then diverge from each other over time. Changes in the preferred substrate or resultant product of PV enzymes may occur through minimal changes of critical residues. Convergent evolution is often responsible for the ability of distally related species to synthesize the same volatile.
Pichersky
Eran
E
Department of Molecular, Cellular and Developmental Biology, University of Michigan, 830 North University Street, Ann Arbor, MI 48109, USA. lelx@umich.edu
Noel
Joseph P
JP
Dudareva
Natalia
N
D019143:Evolution, Molecular; D035264:Flowers / Q000378:metabolism; D017343:Genes, Plant; D015394:Molecular Structure; D009812:Odorants; D009822:Oils, Volatile / Q000378:metabolism*; D009930:Organic Chemicals / Q000378:metabolism*; D018515:Plant Leaves / Q000378:metabolism; D010944:Plants / Q000201:enzymology / Q000235:genetics / Q000378:metabolism*; D013379:Substrate Specificity; D013729:Terpenes / Q000378:metabolism*; D014835:Volatilization
D009822:Oils, Volatile; D009930:Organic Chemicals; D013729:Terpenes