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Title: Cytochrome P450–catalyzed biosynthesis of furanoditerpenoids in the bioenergy crop switchgrass (Panicum virgatum L.)

Abstract

Specialized diterpenoid metabolites are important mediators of plant-environment interactions in monocot crops. To understand metabolite functions in plant environmental adaptation that ultimately can enable crop improvement strategies, a deeper knowledge of the underlying species-specific biosynthetic pathways is required. Furthermore, we report the genomics-enabled discovery of five cytochrome P450 monooxygenases (CYP71Z25-CYP71Z29) that form previously unknown furanoditerpenoids in the monocot bioenergy crop Panicum virgatum (switchgrass). Combinatorial pathway reconstruction showed that CYP71Z25-CYP71Z29 catalyze furan ring addition directly to primary diterpene alcohol intermediates derived from distinct class II diterpene synthase products. Transcriptional co-expression patterns and the presence of select diterpenoids in switchgrass roots support the occurrence of P450-derived furanoditerpenoids in planta. Integrating molecular dynamics, structural analysis and targeted mutagenesis identified active site determinants that contribute to the distinct catalytic specificities underlying the broad substrate promiscuity of CYP71Z25-CYP71Z29 for native and non-native diterpenoids.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [2]; ORCiD logo [1]
  1. Univ. of California, Davis, CA (United States)
  2. Hudson Alpha Inst. for Biotechnology, Huntsville, AL (United States)
Publication Date:
Research Org.:
Univ. of California, Davis, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
OSTI Identifier:
1828388
Grant/Contract Number:  
SC0019178; AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
The Plant Journal
Additional Journal Information:
Journal Volume: 108; Journal Issue: 4; Journal ID: ISSN 0960-7412
Publisher:
Society for Experimental Biology
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; Panicum virgatum; cytochrome P450 monooxygenase; diterpenoid biosynthesis; plant natural products; plant specialized metabolism

Citation Formats

Muchlinski, Andrew, Jia, Meirong, Tiedge, Kira, Fell, Jason S., Pelot, Kyle A., Chew, Lisl, Davisson, Danielle, Chen, Yuxuan, Siegel, Justin, Lovell, John T., and Zerbe, Philipp. Cytochrome P450–catalyzed biosynthesis of furanoditerpenoids in the bioenergy crop switchgrass (Panicum virgatum L.). United States: N. p., 2021. Web. doi:10.1111/tpj.15492.
Muchlinski, Andrew, Jia, Meirong, Tiedge, Kira, Fell, Jason S., Pelot, Kyle A., Chew, Lisl, Davisson, Danielle, Chen, Yuxuan, Siegel, Justin, Lovell, John T., & Zerbe, Philipp. Cytochrome P450–catalyzed biosynthesis of furanoditerpenoids in the bioenergy crop switchgrass (Panicum virgatum L.). United States. https://doi.org/10.1111/tpj.15492
Muchlinski, Andrew, Jia, Meirong, Tiedge, Kira, Fell, Jason S., Pelot, Kyle A., Chew, Lisl, Davisson, Danielle, Chen, Yuxuan, Siegel, Justin, Lovell, John T., and Zerbe, Philipp. Mon . "Cytochrome P450–catalyzed biosynthesis of furanoditerpenoids in the bioenergy crop switchgrass (Panicum virgatum L.)". United States. https://doi.org/10.1111/tpj.15492. https://www.osti.gov/servlets/purl/1828388.
@article{osti_1828388,
title = {Cytochrome P450–catalyzed biosynthesis of furanoditerpenoids in the bioenergy crop switchgrass (Panicum virgatum L.)},
author = {Muchlinski, Andrew and Jia, Meirong and Tiedge, Kira and Fell, Jason S. and Pelot, Kyle A. and Chew, Lisl and Davisson, Danielle and Chen, Yuxuan and Siegel, Justin and Lovell, John T. and Zerbe, Philipp},
abstractNote = {Specialized diterpenoid metabolites are important mediators of plant-environment interactions in monocot crops. To understand metabolite functions in plant environmental adaptation that ultimately can enable crop improvement strategies, a deeper knowledge of the underlying species-specific biosynthetic pathways is required. Furthermore, we report the genomics-enabled discovery of five cytochrome P450 monooxygenases (CYP71Z25-CYP71Z29) that form previously unknown furanoditerpenoids in the monocot bioenergy crop Panicum virgatum (switchgrass). Combinatorial pathway reconstruction showed that CYP71Z25-CYP71Z29 catalyze furan ring addition directly to primary diterpene alcohol intermediates derived from distinct class II diterpene synthase products. Transcriptional co-expression patterns and the presence of select diterpenoids in switchgrass roots support the occurrence of P450-derived furanoditerpenoids in planta. Integrating molecular dynamics, structural analysis and targeted mutagenesis identified active site determinants that contribute to the distinct catalytic specificities underlying the broad substrate promiscuity of CYP71Z25-CYP71Z29 for native and non-native diterpenoids.},
doi = {10.1111/tpj.15492},
journal = {The Plant Journal},
number = 4,
volume = 108,
place = {United States},
year = {Mon Sep 13 00:00:00 EDT 2021},
month = {Mon Sep 13 00:00:00 EDT 2021}
}

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