Cytochrome P450–catalyzed biosynthesis of furanoditerpenoids in the bioenergy crop switchgrass (Panicum virgatum L.)
- Univ. of California, Davis, CA (United States); University of California-Davis
- Univ. of California, Davis, CA (United States)
- Hudson Alpha Inst. for Biotechnology, Huntsville, AL (United States)
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.
- Research Organization:
- Univ. of California, Davis, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Biological and Environmental Research (BER)
- Grant/Contract Number:
- SC0019178; AC02-05CH11231
- OSTI ID:
- 1828388
- Journal Information:
- The Plant Journal, Journal Name: The Plant Journal Journal Issue: 4 Vol. 108; ISSN 0960-7412
- Publisher:
- Society for Experimental BiologyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Characterization of switchgrass ( Panicum virgatum L.) PvKSL1 as a levopimaradiene/abietadiene‐type diterpene synthase
Comparative transcriptomics and metabolomics reveal specialized metabolite drought stress responses in switchgrass ( Panicum virgatum )
Journal Article
·
Tue Aug 20 00:00:00 EDT 2024
· Plant Biology
·
OSTI ID:2582729
Comparative transcriptomics and metabolomics reveal specialized metabolite drought stress responses in switchgrass ( Panicum virgatum )
Journal Article
·
Sat Sep 17 00:00:00 EDT 2022
· New Phytologist
·
OSTI ID:1916502