In planta variation of volatile biosynthesis: an alternative biosynthetic route to the formation of the pathogen-induced volatile homoterpene DMNT via triterpene degradation in Arabidopsis roots

The Plant Cell
Reza SohrabiDorothea Tholl

Abstract

Plant-derived volatile compounds such as terpenes exhibit substantial structural variation and serve multiple ecological functions. Despite their structural diversity, volatile terpenes are generally produced from a small number of core 5- to 20-carbon intermediates. Here, we present unexpected plasticity in volatile terpene biosynthesis by showing that irregular homo/norterpenes can arise from different biosynthetic routes in a tissue specific manner. While Arabidopsis thaliana and other angiosperms are known to produce the homoterpene (E)-4,8-dimethyl-1,3,7-nonatriene (DMNT) or its C16-analog (E,E)-4,8,12-trimethyl-1,3,7,11-tridecatetraene by the breakdown of sesquiterpene and diterpene tertiary alcohols in aboveground tissues, we demonstrate that Arabidopsis roots biosynthesize DMNT by the degradation of the C30 triterpene diol, arabidiol. The reaction is catalyzed by the Brassicaceae-specific cytochrome P450 monooxygenase CYP705A1 and is transiently induced in a jasmonate-dependent manner by infection with the root-rot pathogen Pythium irregulare. CYP705A1 clusters with the arabidiol synthase gene ABDS, and both genes are coexpressed constitutively in the root stele and meristematic tissue. We further provide in vitro and i...Continue Reading

Citations

Feb 21, 2016·Nucleic Acids Research·Nan YuAnne Osbourn
Aug 4, 2015·The Plant Journal : for Cell and Molecular Biology·Hsin-Yi ChenWoei-Jiun Guo
Jul 4, 2015·Science·Dorothea Tholl, Jonathan Gershenzon
Apr 27, 2016·The New Phytologist·Hans-Wilhelm NützmannAnne Osbourn
May 3, 2016·The Plant Journal : for Cell and Molecular Biology·Koji MiyamotoTomonobu Toyomasu
Aug 1, 2016·Trends in Plant Science·Pulu SunSylvie Baudino
Mar 24, 2017·The Plant Journal : for Cell and Molecular Biology·Hassan MassalhaAsaph Aharoni
Nov 25, 2017·Frontiers in Plant Science·Sumit Ghosh
Oct 21, 2018·The Plant Journal : for Cell and Molecular Biology·Yi Shang, Sanwen Huang
Jan 27, 2019·Pest Management Science·Francisco A MacíasJosé Mg Molinillo
Jun 5, 2020·Plant, Cell & Environment·Maja Miloradovic van DoornMaaria Rosenkranz
Sep 24, 2020·Planta·Atilade Adedayo Adedeji, Olubukola Oluranti Babalola
Jun 27, 2018·Proceedings of the National Academy of Sciences of the United States of America·Alexander M Boutanaev, Anne E Osbourn
Jun 5, 2020·Proceedings of the National Academy of Sciences of the United States of America·Hans-Wilhelm NützmannAnne Osbourn
Oct 25, 2020·Nature Communications·Zhenhua LiuAnne Osbourn
Feb 23, 2021·The New Phytologist·Yuechen BaiJacob Pollier
Feb 24, 2020·Current Opinion in Plant Biology·Fei Zhou, Eran Pichersky
Jun 28, 2021·International Journal of Biological Macromolecules·Archana SinghIndrakant Kumar Singh
Jun 25, 2021·The Plant Journal : for Cell and Molecular Biology·Aashish KumarSumit Ghosh
Aug 10, 2021·The Plant Journal : for Cell and Molecular Biology·Maaria RosenkranzA Corina Vlot

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