skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Glucosinolate and phenylpropanoid biosynthesis are linked by proteasome-dependent degradation of PAL

Journal Article · · New Phytologist
DOI:https://doi.org/10.1111/nph.16108· OSTI ID:1597911
 [1];  [2];  [3];  [4];  [3]
  1. Purdue Univ., West Lafayette, IN (United States); Univ. of Florida, Gainesville, FL (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States); Henan Univ., Kaifeng (China)
  3. Purdue Univ., West Lafayette, IN (United States)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States)

Plants produce several hundreds of thousands of secondary metabolites that are important for adaptation to various environmental conditions. Although different groups of secondary metabolites are synthesized through unique biosynthetic pathways, plants must orchestrate their production simultaneously. Phenylpropanoids and glucosinolates are two classes of secondary metabolites that are synthesized through apparently independent biosynthetic pathways. Genetic evidence has revealed that the accumulation of glucosinolate intermediates limits phenylpropanoid production in a Mediator Subunit 5 (MED5)-dependent manner. To elucidate the molecular mechanism underlying this process, here we analyzed the transcriptomes of a suite of Arabidopsis thaliana glucosinolate-deficient mutants using RNAseq and identified misregulated genes that are rescued by the disruption of MED5. The expression of a group of Kelch Domain F-Box genes (KFBs) that function in PAL degradation is affected in glucosinolate biosynthesis mutants and the disruption of these KFBs restores phenylpropanoid deficiency in the mutants. Our study suggests that glucosinolate/phenylpropanoid metabolic crosstalk involves the transcriptional regulation of KFB genes that initiate the degradation of the enzyme phenylalanine ammonia-lyase, which catalyzes the first step of the phenylpropanoid biosynthesis pathway. Nevertheless, KFB mutant plants remain partially sensitive to glucosinolate pathway mutations, suggesting that other mechanisms that link the two pathways also exist.

Research Organization:
Purdue Univ., West Lafayette, IN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
FG02-07ER15905; SC0012704; SC0000997
OSTI ID:
1597911
Alternate ID(s):
OSTI ID: 1561330
Journal Information:
New Phytologist, Vol. 225, Issue 1; ISSN 0028-646X
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 51 works
Citation information provided by
Web of Science

References (55)

Molecular identification of phenylalanine ammonia-lyase as a substrate of a specific constitutively active Arabidopsis CDPK expressed in maize protoplasts journal August 2001
Down-Regulation of Kelch Domain-Containing F-Box Protein in Arabidopsis Enhances the Production of (Poly)phenols and Tolerance to Ultraviolet Radiation journal December 2014
Effects of trans -Cinnamic Acid on Expression of the Bean Phenylalanine Ammonia-Lyase Gene Family journal October 1990
Feedback inhibition of the general phenylpropanoid and flavonol biosynthetic pathways upon a compromised flavonol-3-O-glycosylation journal January 2012
Ferulate-5-hydroxylase from Arabidopsis thaliana defines a new family of cytochrome P450-dependent monooxygenases. journal July 1996
The maize cytochrome P450 CYP79A61 produces phenylacetaldoxime and indole-3-acetaldoxime in heterologous systems and might contribute to plant defense and auxin formation journal May 2015
Inhibition of phenylalanine ammonia-lyase by flavonoids. journal January 1983
Dynamic Metabolons journal December 2010
TopHat: discovering splice junctions with RNA-Seq journal March 2009
The Involvement of Two P450 Enzymes, CYP83B1 and CYP83A1, in Auxin Homeostasis and Glucosinolate Biosynthesis journal September 2001
CYP79D73 Participates in Biosynthesis of Floral Scent Compound 2-Phenylethanol in Plumeria rubra journal February 2019
Transcriptional repression by AtMYB4 controls production of UV-protecting sunscreens in Arabidopsis journal November 2000
Arabidopsis Mutants Lacking Phenolic Sunscreens Exhibit Enhanced Ultraviolet-B Injury and Oxidative Damage journal December 1995
Two Herbivore-Induced Cytochrome P450 Enzymes CYP79D6 and CYP79D7 Catalyze the Formation of Volatile Aldoximes Involved in Poplar Defense journal November 2013
Gene Expression Omnibus: NCBI gene expression and hybridization array data repository journal January 2002
Oximes: Unrecognized Chameleons in General and Specialized Plant Metabolism journal January 2018
Mutations in the cinnamate 4-hydroxylase gene impact metabolism, growth and development in Arabidopsis: Arabidopsis C4H mutants journal December 2009
Silencing of Hydroxycinnamoyl-Coenzyme A Shikimate/Quinate Hydroxycinnamoyltransferase Affects Phenylpropanoid Biosynthesis journal May 2004
Systematic and integrative analysis of large gene lists using DAVID bioinformatics resources journal December 2008
The hyper-fluorescent trichome phenotype of the brt1 mutant of Arabidopsis is the result of a defect in a sinapic acid:UDPG glucosyltransferase: Cloning of the Arabidopsis BRT1 gene journal January 2007
Phosphorylation of phenylalanine ammonia-lyase: evidence for a novel protein kinase and identification of the phosphorylated residue journal August 1999
The Growth Reduction Associated with Repressed Lignin Biosynthesis in Arabidopsis thaliana Is Independent of Flavonoids journal May 2010
Enzymes of aldoxime–nitrile pathway for organic synthesis journal April 2018
Indole Glucosinolate Biosynthesis Limits Phenylpropanoid Accumulation in Arabidopsis thaliana journal May 2015
Multigeneration analysis reveals the inheritance, specificity, and patterns of CRISPR/Cas-induced gene modifications in Arabidopsis journal February 2014
The Arabidopsis REF8 gene encodes the 3-hydroxylase of phenylpropanoid metabolism journal April 2002
edgeR: a Bioconductor package for differential expression analysis of digital gene expression data journal November 2009
Arabidopsis Kelch Repeat F-Box Proteins Regulate Phenylpropanoid Biosynthesis via Controlling the Turnover of Phenylalanine Ammonia-Lyase journal December 2013
The SUR2 gene of Arabidopsis thaliana encodes the cytochrome P450 CYP83B1, a modulator of auxin homeostasis journal December 2000
Functional Analysis of the Arabidopsis PAL Gene Family in Plant Growth, Development, and Response to Environmental Stress journal June 2010
Unravelling Protein-Protein Interaction Networks Linked to Aliphatic and Indole Glucosinolate Biosynthetic Pathways in Arabidopsis journal November 2017
The scaffold proteins of lignin biosynthetic cytochrome P450 enzymes journal April 2018
HTSeq--a Python framework to work with high-throughput sequencing data journal September 2014
A Proteolytic Regulator Controlling Chalcone Synthase Stability and Flavonoid Biosynthesis in Arabidopsis journal April 2017
Semidominant Mutations in Reduced Epidermal Fluorescence 4 Reduce Phenylpropanoid Content in Arabidopsis journal April 2008
Differential expression of four Arabidopsis PAL genes; PAL1 and PAL2 have functional specialization in abiotic environmental-triggered flavonoid synthesis journal September 2008
Glucosinolate structures in evolution journal May 2012
Metabolic engineering of dhurrin in transgenic Arabidopsis plants with marginal inadvertent effects on the metabolome and transcriptome journal January 2005
Altering Expression of Cinnamic Acid 4-Hydroxylase in Transgenic Plants Provides Evidence for a Feedback Loop at the Entry Point into the Phenylpropanoid Pathway journal January 2000
The Arabidopsis ref2 Mutant Is Defective in the Gene Encoding CYP83A1 and Shows Both Phenylpropanoid and Glucosinolate Phenotypes journal December 2002
Bioinformatics enrichment tools: paths toward the comprehensive functional analysis of large gene lists journal November 2008
Cultivated and wild host plants supporting populations of the cabbage root fly journal January 1977
RED1 is necessary for phytochrome B-mediated red light-specific signal transduction in Arabidopsis. journal May 1997
Disruption of Mediator rescues the stunted growth of a lignin-deficient Arabidopsis mutant journal March 2014
CYP83A1 and CYP83B1, Two Nonredundant Cytochrome P450 Enzymes Metabolizing Oximes in the Biosynthesis of Glucosinolates in Arabidopsis journal August 2003
REF4 and RFR1, Subunits of the Transcriptional Coregulatory Complex Mediator, Are Required for Phenylpropanoid Homeostasis in Arabidopsis journal December 2011
Complete Proteomic-Based Enzyme Reaction and Inhibition Kinetics Reveal How Monolignol Biosynthetic Enzyme Families Affect Metabolic Flux and Lignin in Populus trichocarpa journal March 2014
L-Phenylalanine ammonia-lyase fromPhaseolus vulgaris: Modulation of the levels of active enzyme bytrans-cinnamic acid journal March 1986
CYP79 P450 monooxygenases in gymnosperms: CYP79A118 is associated with the formation of taxiphyllin in Taxus baccata journal August 2017
Mutations That Reduce Sinapoylmalate Accumulation in Arabidopsis thaliana Define Loci With Diverse Roles in Phenylpropanoid Metabolism journal December 2001
Persistence of adoptively transferred T cells with a kinetically engineered IL-2 receptor agonist journal January 2020
Adipose-derived mesenchymal stem cells differentiate into heterogeneous cancer-associated fibroblasts in a stroma-rich xenograft model journal February 2021
RED1 Is Necessary for Phytochrome B-Mediated Red Light-Specific Signal Transduction in Arabidopsis journal May 1997
Unravelling Protein-Protein Interaction Networks Linked to Aliphatic and Indole Glucosinolate Biosynthetic Pathways in Arabidopsis text January 2017
Unravelling Protein-Protein Interaction Networks Linked to Aliphatic and Indole Glucosinolate Biosynthetic Pathways in Arabidopsis text January 2017

Cited By (2)

A noninvasive, machine learning–based method for monitoring anthocyanin accumulation in plants using digital color imaging journal November 2019
The dynamic response of the Arabidopsis root metabolome to auxin and ethylene is not predicted by changes in the transcriptome journal January 2020