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Leonardelli M, Tissot N, Podolec R, Ares-Orpel F, Glauser G, Ulm R, Demarsy E. Photoreceptor-induced sinapate synthesis contributes to photoprotection in Arabidopsis. PLANT PHYSIOLOGY 2024; 196:1518-1533. [PMID: 38918833 PMCID: PMC11444301 DOI: 10.1093/plphys/kiae352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 05/21/2024] [Accepted: 06/01/2024] [Indexed: 06/27/2024]
Abstract
Plants must balance light capture for photosynthesis with protection from potentially harmful ultraviolet (UV) radiation. Photoprotection is mediated by concerted action of photoreceptors, but the underlying molecular mechanisms are not fully understood. In this study, we provide evidence that UV RESISTANCE LOCUS 8 (UVR8) UV-B, phytochrome red, and cryptochrome blue-light photoreceptors converge on the induction of FERULIC ACID 5-HYDROXYLASE 1 (FAH1) that encodes a key enzyme in the phenylpropanoid biosynthesis pathway, leading to the accumulation of UV-absorbing sinapate esters in Arabidopsis (Arabidopsis thaliana). FAH1 induction depends on the basic leucine zipper transcription factors ELONGATED HYPOCOTYL 5 (HY5) and HY5 HOMOLOG that function downstream of all 3 photoreceptors. Noticeably, mutants with hyperactive UVR8 signaling rescue fah1 UV sensitivity. Targeted metabolite profiling suggests that this phenotypic rescue is due to the accumulation of UV-absorbing metabolites derived from precursors of sinapate synthesis, namely, coumaroyl glucose and feruloyl glucose. Our genetic dissection of the phenylpropanoid pathway combined with metabolomic and physiological analyses show that both sinapate esters and flavonoids contribute to photoprotection with sinapates playing a major role for UV screening. Our findings indicate that photoreceptor-mediated regulation of FAH1 and subsequent accumulation of sinapate "sunscreen" compounds are key protective mechanisms to mitigate damage, preserve photosynthetic performance, and ensure plant survival under UV.
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Affiliation(s)
- Manuela Leonardelli
- Department of Plant Sciences, Section of Biology, Faculty of Sciences, University of Geneva, CH-1211 Geneva, Switzerland
| | - Nicolas Tissot
- Department of Plant Sciences, Section of Biology, Faculty of Sciences, University of Geneva, CH-1211 Geneva, Switzerland
| | - Roman Podolec
- Department of Plant Sciences, Section of Biology, Faculty of Sciences, University of Geneva, CH-1211 Geneva, Switzerland
- Institute of Genetics and Genomics in Geneva (iGE3), University of Geneva, CH-1211 Geneva, Switzerland
| | - Florence Ares-Orpel
- Department of Plant Sciences, Section of Biology, Faculty of Sciences, University of Geneva, CH-1211 Geneva, Switzerland
| | - Gaétan Glauser
- Neuchâtel Platform of Analytical Chemistry, University of Neuchâtel, CH-2000 Neuchâtel, Switzerland
| | - Roman Ulm
- Department of Plant Sciences, Section of Biology, Faculty of Sciences, University of Geneva, CH-1211 Geneva, Switzerland
- Institute of Genetics and Genomics in Geneva (iGE3), University of Geneva, CH-1211 Geneva, Switzerland
| | - Emilie Demarsy
- Department of Plant Sciences, Section of Biology, Faculty of Sciences, University of Geneva, CH-1211 Geneva, Switzerland
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Cao X, Hao W, Pan W, Gao X, Xie J, Du L. A vacuolar protein MaSCPL1 mediates anthocyanin acylation modifications in blue-flowered grape hyacinth. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 349:112273. [PMID: 39321877 DOI: 10.1016/j.plantsci.2024.112273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2024] [Revised: 09/19/2024] [Accepted: 09/21/2024] [Indexed: 09/27/2024]
Abstract
The grape hyacinth is renowned for its profuse blue flowers, which confer substantial scientific and ornamental significance as well as considerable potential for industrial applications. The serine carboxypeptidase-like acyltransferases (SCPL-ATs) family is crucial for the blue flower coloration. To elucidate SCPL-ATs involved in anthocyanin modification in grape hyacinth, we performed a transcriptomic analysis of grape hyacinth SCPL-ATs. Through gene expression profiling, we identified a promising candidate gene, MaSCPL1, whose expression patterns corresponded with variations in anthocyanin content throughout petal coloration. Subsequently, the functional role of the MaSCPL1 gene was validated using the native petal regeneration system, and the silencing of MaSCPL1 led to a decreased total anthocyanin content and Dp3MG content in grape hyacinth petals. Furthermore, we employed yeast one-hybrid (Y1H), electrophoretic mobility shift assay (EMSA), and dual-luciferase assays to explore the regulatory interactions between the anthocyanin biosynthesis transcription factor MaMybA and the MaSCPL1 promoter. Our findings indicate that MaMybA can bind to the MaSCPL1 promoter and significantly activate its expression. Furthermore, the MaMybA-RNAi resulted in a substantial multifold reduction in the expression of MaSCPL1, implying that the regulation of MaSCPL1 expression is mediated by MaMybA. This study revealed the MaSCPL1 gene has been associated with anthocyanin acylated modification in grape hyacinth and elucidated the important role of the MaMybA-MaSCPL1 module in colouration grape hyacinth.
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Affiliation(s)
- Xiaoyun Cao
- College of Landscape Architecture and Art, Northwest A & F University, Yangling, Shaanxi 712100, China; State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Wenhui Hao
- College of Landscape Architecture and Art, Northwest A & F University, Yangling, Shaanxi 712100, China; State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Wanqi Pan
- College of Landscape Architecture and Art, Northwest A & F University, Yangling, Shaanxi 712100, China; State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Xuelan Gao
- College of Landscape Architecture and Art, Northwest A & F University, Yangling, Shaanxi 712100, China; State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Jingwen Xie
- College of Landscape Architecture and Art, Northwest A & F University, Yangling, Shaanxi 712100, China; State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, Northwest A & F University, Yangling, Shaanxi 712100, China
| | - Lingjuan Du
- College of Landscape Architecture and Art, Northwest A & F University, Yangling, Shaanxi 712100, China; State Key Laboratory of Crop Stress Resistance and High-Efficiency Production, Northwest A & F University, Yangling, Shaanxi 712100, China.
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3
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Barreda L, Brosse C, Boutet S, Perreau F, Rajjou L, Lepiniec L, Corso M. Specialized metabolite modifications in Brassicaceae seeds and plants: diversity, functions and related enzymes. Nat Prod Rep 2024; 41:834-859. [PMID: 38323463 DOI: 10.1039/d3np00043e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
Covering: up to 2023Specialized metabolite (SM) modifications and/or decorations, corresponding to the addition or removal of functional groups (e.g. hydroxyl, methyl, glycosyl or acyl group) to SM structures, contribute to the huge diversity of structures, activities and functions of seed and plant SMs. This review summarizes available knowledge (up to 2023) on SM modifications in Brassicaceae and their contribution to SM plasticity. We give a comprehensive overview on enzymes involved in the addition or removal of these functional groups. Brassicaceae, including model (Arabidopsis thaliana) and crop (Brassica napus, Camelina sativa) plant species, present a large diversity of plant and seed SMs, which makes them valuable models to study SM modifications. In this review, particular attention is given to the environmental plasticity of SM and relative modification and/or decoration enzymes. Furthermore, a spotlight is given to SMs and related modification enzymes in seeds of Brassicaceae species. Seeds constitute a large reservoir of beneficial SMs and are one of the most important dietary sources, providing more than half of the world's intake of dietary proteins, oil and starch. The seed tissue- and stage-specific expressions of A. thaliana genes involved in SM modification are presented and discussed in the context of available literature. Given the major role in plant phytochemistry, biology and ecology, SM modifications constitute a subject of study contributing to the research and development in agroecology, pharmaceutical, cosmetics and food industrial sectors.
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Affiliation(s)
- Léa Barreda
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), 78000 Versailles, France.
| | - Céline Brosse
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), 78000 Versailles, France.
| | - Stéphanie Boutet
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), 78000 Versailles, France.
| | - François Perreau
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), 78000 Versailles, France.
| | - Loïc Rajjou
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), 78000 Versailles, France.
| | - Loïc Lepiniec
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), 78000 Versailles, France.
| | - Massimiliano Corso
- Université Paris-Saclay, INRAE, AgroParisTech, Institut Jean-Pierre Bourgin (IJPB), 78000 Versailles, France.
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Odinot E, Bisotto-Mignot A, Frezouls T, Bissaro B, Navarro D, Record E, Cadoret F, Doan A, Chevret D, Fine F, Lomascolo A. A New Phenolic Acid Decarboxylase from the Brown-Rot Fungus Neolentinus lepideus Natively Decarboxylates Biosourced Sinapic Acid into Canolol, a Bioactive Phenolic Compound. Bioengineering (Basel) 2024; 11:181. [PMID: 38391667 PMCID: PMC10886158 DOI: 10.3390/bioengineering11020181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 02/06/2024] [Accepted: 02/07/2024] [Indexed: 02/24/2024] Open
Abstract
Rapeseed meal (RSM) is a cheap, abundant and renewable feedstock, whose biorefinery is a current challenge for the sustainability of the oilseed sector. RSM is rich in sinapic acid (SA), a p-hydroxycinnamic acid that can be decarboxylated into canolol (2,6-dimethoxy-4-vinylphenol), a valuable bioactive compound. Microbial phenolic acid decarboxylases (PADs), mainly described for the non-oxidative decarboxylation of ferulic and p-coumaric acids, remain very poorly documented to date, for SA decarboxylation. The species Neolentinus lepideus has previously been shown to biotransform SA into canolol in vivo, but the enzyme responsible for bioconversion of the acid has never been characterized. In this study, we purified and characterized a new PAD from the canolol-overproducing strain N. lepideus BRFM15. Proteomic analysis highlighted a sole PAD-type protein sequence in the intracellular proteome of the strain. The native enzyme (NlePAD) displayed an unusual outstanding activity for decarboxylating SA (Vmax of 600 U.mg-1, kcat of 6.3 s-1 and kcat/KM of 1.6 s-1.mM-1). We showed that NlePAD (a homodimer of 2 × 22 kDa) is fully active in a pH range of 5.5-7.5 and a temperature range of 30-55 °C, with optima of pH 6-6.5 and 37-45 °C, and is highly stable at 4 °C and pH 6-8. Relative ratios of specific activities on ferulic, sinapic, p-coumaric and caffeic acids, respectively, were 100:24.9:13.4:3.9. The enzyme demonstrated in vitro effectiveness as a biocatalyst for the synthesis of canolol in aqueous medium from commercial SA, with a molar yield of 92%. Then, we developed processes to biotransform naturally-occurring SA from RSM into canolol by combining the complementary potentialities of an Aspergillus niger feruloyl esterase type-A, which is able to release free SA from the raw meal by hydrolyzing its conjugated forms, and NlePAD, in aqueous medium and mild conditions. NlePAD decarboxylation of biobased SA led to an overall yield of 1.6-3.8 mg canolol per gram of initial meal. Besides being the first characterization of a fungal PAD able to decarboxylate SA, this report shows that NlePAD is very promising as new biotechnological tool to generate biobased vinylphenols of industrial interest (especially canolol) as valuable platform chemicals for health, nutrition, cosmetics and green chemistry.
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Affiliation(s)
- Elise Odinot
- OléoInnov, 19 Rue du Musée, F-13001 Marseille, France
| | - Alexandra Bisotto-Mignot
- INRAE, Aix-Marseille Université, UMR1163 BBF Fungal Biodiversity and Biotechnology, 163 Avenue de Luminy, F-13009 Marseille, France
| | - Toinou Frezouls
- INRAE, Aix-Marseille Université, UMR1163 BBF Fungal Biodiversity and Biotechnology, 163 Avenue de Luminy, F-13009 Marseille, France
| | - Bastien Bissaro
- INRAE, Aix-Marseille Université, UMR1163 BBF Fungal Biodiversity and Biotechnology, 163 Avenue de Luminy, F-13009 Marseille, France
| | - David Navarro
- INRAE, Aix-Marseille Université, UMR1163 BBF Fungal Biodiversity and Biotechnology, 163 Avenue de Luminy, F-13009 Marseille, France
| | - Eric Record
- INRAE, Aix-Marseille Université, UMR1163 BBF Fungal Biodiversity and Biotechnology, 163 Avenue de Luminy, F-13009 Marseille, France
| | - Frédéric Cadoret
- INRAE, Aix-Marseille Université, UMR1163 BBF Fungal Biodiversity and Biotechnology, 163 Avenue de Luminy, F-13009 Marseille, France
| | - Annick Doan
- INRAE, Aix-Marseille Université, UMR1163 BBF Fungal Biodiversity and Biotechnology, 163 Avenue de Luminy, F-13009 Marseille, France
| | - Didier Chevret
- INRAE, UMR1319 MICALIS Institute, PAPPSO, Domaine de Vilvert, F-78350 Jouy-en-Josas, France
| | - Frédéric Fine
- TERRES INOVIA, Parc Industriel, 11 Rue Monge, F-33600 Pessac, France
| | - Anne Lomascolo
- INRAE, Aix-Marseille Université, UMR1163 BBF Fungal Biodiversity and Biotechnology, 163 Avenue de Luminy, F-13009 Marseille, France
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Schilbert HM, Busche M, Sáez V, Angeli A, Weisshaar B, Martens S, Stracke R. Generation and characterisation of an Arabidopsis thaliana f3h/fls1/ans triple mutant that accumulates eriodictyol derivatives. BMC PLANT BIOLOGY 2024; 24:99. [PMID: 38331743 PMCID: PMC10854054 DOI: 10.1186/s12870-024-04787-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 01/31/2024] [Indexed: 02/10/2024]
Abstract
BACKGROUND Flavonoids are plant specialised metabolites, which derive from phenylalanine and acetate metabolism. They possess a variety of beneficial characteristics for plants and humans. Several modification steps in the synthesis of tricyclic flavonoids cause for the amazing diversity of flavonoids in plants. The 2-oxoglutarate-dependent dioxygenases (2-ODDs) flavanone 3-hydroxylase (F3H, synonym FHT), flavonol synthase (FLS) and anthocyanidin synthase (ANS, synonym leucoanthocyanidin dioxygenase (LDOX)), catalyse oxidative modifications to the central C ring. They are highly similar and have been shown to catalyse, at least in part, each other's reactions. FLS and ANS have been identified as bifunctional enzymes in many species, including Arabidopsis thaliana, stressing the capability of plants to bypass missing or mutated reaction steps on the way to flavonoid production. However, little is known about such bypass reactions and the flavonoid composition of plants lacking all three central flavonoid 2-ODDs. RESULTS To address this issue, we generated a f3h/fls1/ans mutant, as well as the corresponding double mutants and investigated the flavonoid composition of this mutant collection. The f3h/fls1/ans mutant was further characterised at the genomic level by analysis of a nanopore DNA sequencing generated genome sequence assembly and at the transcriptomic level by RNA-Seq analysis. The mutant collection established, including the novel double mutants f3h/fls1 and f3h/ans, was used to validate and analyse the multifunctionalities of F3H, FLS1, and ANS in planta. Metabolite analyses revealed the accumulation of eriodictyol and additional glycosylated derivatives in mutants carrying the f3h mutant allele, resulting from the conversion of naringenin to eriodictyol by flavonoid 3'-hydroxylase (F3'H) activity. CONCLUSIONS We describe the in planta multifunctionality of the three central flavonoid 2-ODDs from A. thaliana and identify a bypass in the f3h/fls1/ans triple mutant that leads to the formation of eriodictyol derivatives. As (homo-)eriodictyols are known as bitter taste maskers, the annotated eriodictyol (derivatives) and in particular the observations made on their in planta production, could provide valuable insights for the creation of novel food supplements.
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Affiliation(s)
- Hanna Marie Schilbert
- Faculty of Biology, Genetics and Genomics of Plants, Bielefeld University, 33615, Bielefeld, Germany
| | - Mareike Busche
- Faculty of Biology, Genetics and Genomics of Plants, Bielefeld University, 33615, Bielefeld, Germany
| | - Vania Sáez
- Research and Innovation Centre, Fondazione Edmund Mach, 38098, San Michele all'Adige (TN), Italy
| | - Andrea Angeli
- Research and Innovation Centre, Fondazione Edmund Mach, 38098, San Michele all'Adige (TN), Italy
| | - Bernd Weisshaar
- Faculty of Biology, Genetics and Genomics of Plants, Bielefeld University, 33615, Bielefeld, Germany
| | - Stefan Martens
- Research and Innovation Centre, Fondazione Edmund Mach, 38098, San Michele all'Adige (TN), Italy
| | - Ralf Stracke
- Faculty of Biology, Genetics and Genomics of Plants, Bielefeld University, 33615, Bielefeld, Germany.
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Zhao M, Li J, Zhou S, Li K, Niu L, Zhao L, Xu D. Analysis of the effects of sulfamethoxazole on the secondary metabolites and antioxidants in oilseed rape (Brassica napus L.) and the underlying mechanisms. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 902:165768. [PMID: 37516166 DOI: 10.1016/j.scitotenv.2023.165768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 07/18/2023] [Accepted: 07/22/2023] [Indexed: 07/31/2023]
Abstract
The secondary metabolism of plants is key for mediating responses to environmental stress, but few studies have examined how the relationship between secondary metabolism and the stress response of plants is affected by exposure to antibiotics. Here, we studied the effects of sulfamethoxazole (SMZ) on the secondary metabolism and antioxidant activity of oilseed rape (Brassica napus L.). SMZ significantly affected the growth of rape seedlings. Low and high concentrations of SMZ induced the production of a large number of reactive oxygen species (ROS) in rape seedlings, which damaged cells. SMZ stress altered the activity of superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT), as well as the content of malondialdehyde (MDA). SMZ promoted the activities of phenylalanine ammonia lyase (PAL), tyrosine ammonia lyase (TAL), cinnamic acid-4-hydroxylase (C4H), and 4-coumaric acid: coenzyme A ligase (4CL) by activating the phenylpropanoid pathway. The content of secondary metabolites changed. The content of phenolic acids and flavonoids increased, and the content of sinapine and anthocyanins was altered to cope with the oxidative damage induced by antibiotics. Transcriptomic and metabolomic analysis showed that differentially expressed genes and differentially expressed metabolites were mainly involved in Phenylpropanoid biosynthesis. SMZ alters the secondary metabolites of rapeseed, which mitigates the deleterious effects of stress, by modulating upstream secondary metabolism pathways and the production of plant hormones involved in signal transduction. In sum, these results provide a new perspective on the effects of SMZ on plants relative to secondary metabolites and improve our understanding of the toxicity of SMZ.
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Affiliation(s)
- Mengting Zhao
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou 310015, China; College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Jun Li
- MOE Key Laboratory of Environmental Remediation & Ecosystem Health, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310058, China
| | - Shanshan Zhou
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Ke Li
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, China
| | - Lili Niu
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou 310015, China
| | - Lu Zhao
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, Interdisciplinary Research Academy (IRA), Zhejiang Shuren University, Hangzhou 310015, China
| | - Dongmei Xu
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou 310015, China.
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Lomascolo A, Odinot E, Villeneuve P, Lecomte J. Challenges and advances in biotechnological approaches for the synthesis of canolol and other vinylphenols from biobased p-hydroxycinnamic acids: a review. BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS 2023; 16:173. [PMID: 37964324 PMCID: PMC10644543 DOI: 10.1186/s13068-023-02425-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 11/02/2023] [Indexed: 11/16/2023]
Abstract
p-Hydroxycinnamic acids, such as sinapic, ferulic, p-coumaric and caffeic acids, are among the most abundant phenolic compounds found in plant biomass and agro-industrial by-products (e.g. cereal brans, sugar-beet and coffee pulps, oilseed meals). These p-hydroxycinnamic acids, and their resulting decarboxylation products named vinylphenols (canolol, 4-vinylguaiacol, 4-vinylphenol, 4-vinylcatechol), are bioactive molecules with many properties including antioxidant, anti-inflammatory and antimicrobial activities, and potential applications in food, cosmetic or pharmaceutical industries. They were also shown to be suitable precursors of new sustainable polymers and biobased substitutes for fine chemicals such as bisphenol A diglycidyl ethers. Non-oxidative microbial decarboxylation of p-hydroxycinnamic acids into vinylphenols involves cofactor-free and metal-independent phenolic acid decarboxylases (EC 4.1.1 carboxyl lyase family). Historically purified from bacteria (Bacillus, Lactobacillus, Pseudomonas, Enterobacter genera) and some yeasts (e.g. Brettanomyces or Candida), these enzymes were described for the decarboxylation of ferulic and p-coumaric acids into 4-vinylguaiacol and 4-vinylphenol, respectively. The catalytic mechanism comprised a first step involving p-hydroxycinnamic acid conversion into a semi-quinone that then decarboxylated spontaneously into the corresponding vinyl compound, in a second step. Bioconversion processes for synthesizing 4-vinylguaiacol and 4-vinylphenol by microbial decarboxylation of ferulic and p-coumaric acids historically attracted the most research using bacterial recombinant phenolic acid decarboxylases (especially Bacillus enzymes) and the processes developed to date included mono- or biphasic systems, and the use of free- or immobilized cells. More recently, filamentous fungi of the Neolentinus lepideus species were shown to natively produce a more versatile phenolic acid decarboxylase with high activity on sinapic acid in addition to the others p-hydroxycinnamic acids, opening the way to the production of canolol by biotechnological processes applied to rapeseed meal. Few studies have described the further microbial/enzymatic bioconversion of these vinylphenols into valuable compounds: (i) synthesis of flavours such as vanillin, 4-ethylguaiacol and 4-ethylphenol from 4-vinylguaiacol and 4-vinylphenol, (ii) laccase-mediated polymer synthesis from canolol, 4-vinylguaiacol and 4-vinylphenol.
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Affiliation(s)
- Anne Lomascolo
- Aix Marseille Univ., INRAE, UMR1163 BBF Biodiversité et Biotechnologie Fongiques, 13009, Marseille, France.
| | - Elise Odinot
- OléoInnov, 19 rue du Musée, 13001, Marseille, France
| | - Pierre Villeneuve
- CIRAD, UMR Qualisud, 34398, Montpellier, France
- Qualisud, Univ Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
| | - Jérôme Lecomte
- CIRAD, UMR Qualisud, 34398, Montpellier, France
- Qualisud, Univ Montpellier, Avignon Université, CIRAD, Institut Agro, IRD, Université de La Réunion, Montpellier, France
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8
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Kanawati B, Bertic M, Moritz F, Habermann F, Zimmer I, Mackey D, Schmitt‐Kopplin P, Schnitzler J, Durner J, Gaupels F. Blue-green fluorescence during hypersensitive cell death arises from phenylpropanoid deydrodimers. PLANT DIRECT 2023; 7:e531. [PMID: 37705693 PMCID: PMC10496137 DOI: 10.1002/pld3.531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 08/12/2023] [Accepted: 08/25/2023] [Indexed: 09/15/2023]
Abstract
Infection of Arabidopsis with avirulent Pseudomonas syringae and exposure to nitrogen dioxide (NO2) both trigger hypersensitive cell death (HCD) that is characterized by the emission of bright blue-green (BG) autofluorescence under UV illumination. The aim of our current work was to identify the BG fluorescent molecules and scrutinize their biosynthesis, localization, and functions during the HCD. Compared with wild-type (WT) plants, the phenylpropanoid-deficient mutant fah1 developed normal HCD except for the absence of BG fluorescence. Ultrahigh resolution metabolomics combined with mass difference network analysis revealed that WT but not fah1 plants rapidly accumulate dehydrodimers of sinapic acid, sinapoylmalate, 5-hydroxyferulic acid, and 5-hydroxyferuloylmalate during the HCD. FAH1-dependent BG fluorescence appeared exclusively within dying cells of the upper epidermis as detected by microscopy. Saponification released dehydrodimers from cell wall polymers of WT but not fah1 plants. Collectively, our data suggest that HCD induction leads to the formation of free BG fluorescent dehydrodimers from monomeric sinapates and 5-hydroxyferulates. The formed dehydrodimers move from upper epidermis cells into the apoplast where they esterify cell wall polymers. Possible functions of phenylpropanoid dehydrodimers are discussed.
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Affiliation(s)
- Basem Kanawati
- Analytical BioGeoChemistryHelmholtz Zentrum MünchenNeuherbergGermany
| | - Marko Bertic
- Research Unit Environmental Simulation, Institute of Biochemical Plant PathologyHelmholtz Zentrum MünchenNeuherbergGermany
| | - Franco Moritz
- Analytical BioGeoChemistryHelmholtz Zentrum MünchenNeuherbergGermany
| | - Felix Habermann
- Institute of Anatomy, Histology and Embryology, Department of Veterinary SciencesLudwig‐Maximilians‐University MunichMunichGermany
| | - Ina Zimmer
- Research Unit Environmental Simulation, Institute of Biochemical Plant PathologyHelmholtz Zentrum MünchenNeuherbergGermany
| | - David Mackey
- Department of Horticulture and Crop Science and Department of Molecular GeneticsOhio State UniversityColumbusOhioUSA
| | | | - Jörg‐Peter Schnitzler
- Research Unit Environmental Simulation, Institute of Biochemical Plant PathologyHelmholtz Zentrum MünchenNeuherbergGermany
| | - Jörg Durner
- Institute of Biochemical Plant PathologyHelmholtz Zentrum MünchenNeuherbergGermany
| | - Frank Gaupels
- Institute of Biochemical Plant PathologyHelmholtz Zentrum MünchenNeuherbergGermany
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9
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Pham VD, Korver DR, Gänzle MG. Conversion of Phenolic Acids in Canola Fermentation: Impact on Antimicrobial Activity against Salmonella enterica and Campylobacter jejuni. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:2059-2069. [PMID: 36669157 DOI: 10.1021/acs.jafc.2c08322] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Canola meal (CM) is commonly used in poultry feeds. CM has a high protein content but also contains high levels of antimicrobial phenolic acids. Lactic acid bacteria can alter CM phenolic composition during fermentation and influence its antimicrobial activity against pathogens. Fermented CM was analyzed for phenolic composition using tandem mass spectrometry (LC-MS/MS) and high-performance liquid chromatography (HPLC). Sinapic acid and derivatives were the major phenolic acids in CM. Growth of lactobacilli in CM was attenuated when compared to cereal substrates. Glucosides and esters of sinapic acid were extensively hydrolyzed during fermentation with Lactiplantibacillus plantarum and Furfurilactobacillus milii. Lp. plantarum transformed hydroxycinnamic acids to dihydro, 4-vinyl, and 4-ethyl derivatives, Ff. milii reduced hydroxycinnamic acids to dihydroderivatives, but Limosilactobacillus reuteri did not convert hydroxycinnamic acids. The minimum inhibitory concentration of phenolic extracts was assessed with lactobacilli, Salmonella, and Campylobacter jejuni as indicator strains. Fermentation of CM with Lp. plantarum or Ff. milii increased the antimicrobial activity of phenolic extracts against Salmonella enterica and Campylobacter jejuni. Fermentation with Lm. reuteri TMW1.656 but not fermentation with Lm. reuteri TMW1.656ΔrtcN increased the antimicrobial activity of extracts owing to the production of reutericyclin. This study demonstrates that fermentation of CM with lactobacilli converts hydroxycinammic esters and may increase the antimicrobial activity of phenolic compounds in CM against pathogens.
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Affiliation(s)
- Vi D Pham
- Department. of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
| | - Douglas R Korver
- Department. of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
| | - Michael G Gänzle
- Department. of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada
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10
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Li W, Sun Y, Li K, Tian H, Jia J, Zhang H, Wang Y, Wang H, Bi B, Guo J, Tran LSP, Miao Y. Sinapate Esters Mediate UV-B-Induced Stomatal Closure by Regulating Nitric Oxide, Hydrogen Peroxide, and Malate Accumulation in Arabidopsis thaliana. PLANT & CELL PHYSIOLOGY 2023; 63:1890-1899. [PMID: 35475535 DOI: 10.1093/pcp/pcac059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 04/11/2022] [Accepted: 04/26/2022] [Indexed: 06/14/2023]
Abstract
Sinapate esters, which are induced in plants under ultraviolet-B (UV-B) irradiation, have important roles not only in the protection against UV-B irradiation but also in the regulation of stomatal closure. Here, we speculated that sinapate esters would function in the stomatal closure of Arabidopsis thaliana in response to UV-B. We measured the stomatal aperture size of the wild-type (WT) and bright trichomes 1 (brt1) and sinapoylglucose accumulator 1 (sng1) mutants under UV-B irradiation; the latter two mutants are deficient in the conversion of sinapic acid to sinapoylglucose (SG) and SG to sinapoylmalate (SM), respectively. Both the brt1 and sng1 plants showed smaller stomatal apertures than the WT under normal light and UV-B irradiation conditions. The accumulation of SM and malate were induced by UV-B irradiation in WT and brt1 plants but not in sng1 plants. Consistently, exogenous malate application reduced UV-B-induced stomatal closure in WT, brt1 and sng1 plants. Nonetheless, levels of reactive oxygen species (ROS), nitric oxide (NO) and cytosolic Ca2+ were higher in guard cells of the sng1 mutant than in those of the WT under normal white light and UV-B irradiation, suggesting that disturbance of sinapate metabolism induced the accumulation of these signaling molecules that promote stomatal closure. Unexpectedly, exogenous sinapic acid application prevented stomatal closure of WT, brt1 and sng1 plants. In summary, we hypothesize that SG or other sinapate esters may promote the UV-B-induced malate accumulation and stomatal closure, whereas sinapic acid inhibits the ROS-NO pathway that regulates UV-B-induced cytosolic Ca2+ accumulation and stomatal closure.
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Affiliation(s)
- Weiqiang Li
- State Key Laboratory of Cotton Biology, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, No. 85 Jinming Road, Kaifeng 475004, China
| | - Yaru Sun
- State Key Laboratory of Cotton Biology, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, No. 85 Jinming Road, Kaifeng 475004, China
| | - Kun Li
- State Key Laboratory of Cotton Biology, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, No. 85 Jinming Road, Kaifeng 475004, China
| | - Hongtao Tian
- State Key Laboratory of Cotton Biology, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, No. 85 Jinming Road, Kaifeng 475004, China
| | - Jiangtao Jia
- State Key Laboratory of Cotton Biology, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, No. 85 Jinming Road, Kaifeng 475004, China
| | - Hongyu Zhang
- State Key Laboratory of Cotton Biology, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, No. 85 Jinming Road, Kaifeng 475004, China
| | - Yaping Wang
- State Key Laboratory of Cotton Biology, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, No. 85 Jinming Road, Kaifeng 475004, China
| | - Hong Wang
- State Key Laboratory of Cotton Biology, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, No. 85 Jinming Road, Kaifeng 475004, China
| | - Baodi Bi
- State Key Laboratory of Cotton Biology, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, No. 85 Jinming Road, Kaifeng 475004, China
| | - Jinggong Guo
- State Key Laboratory of Cotton Biology, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, No. 85 Jinming Road, Kaifeng 475004, China
| | - Lam-Son Phan Tran
- Institute of Research and Development, Duy Tan University, 03 Quang Trung, Da Nang 550000, Vietnam
- Institute of Genomics for Crop Abiotic Stress Tolerance, Texas Tech University, 1006 Canton Ave, Lubbock, TX 79409, USA
| | - Yuchen Miao
- State Key Laboratory of Cotton Biology, Henan Joint International Laboratory for Crop Multi-Omics Research, School of Life Sciences, Henan University, No. 85 Jinming Road, Kaifeng 475004, China
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11
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Zhao X, Zhao Y, Gou M, Liu CJ. Tissue-preferential recruitment of electron transfer chains for cytochrome P450-catalyzed phenolic biosynthesis. SCIENCE ADVANCES 2023; 9:eade4389. [PMID: 36630494 PMCID: PMC9833660 DOI: 10.1126/sciadv.ade4389] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 12/13/2022] [Indexed: 06/17/2023]
Abstract
Cytochrome P450 system consists of P450 monooxygenase and redox pattern(s). While the importance of monooxygenases in plant metabolism is well documented, the metabolic roles of the related redox components have been largely overlooked. Here, we show that distinct electron transfer chains are recruited in phenylpropanoid-monolignol P450 systems to support the synthesis and distribution of different classes of phenolics in different plant tissues. While Arabidopsis cinnamate 4-hydroxylase adopts conventional NADPH-cytochrome P450 oxidoreductase (CPR) electron transfer chain for its para-hydroxylation reaction, ferulate 5-hydroxylase uses both NADPH-CPR-cytochrome b5 (CB5) and NADH-cytochrome b5 reductase-CB5 chains to support benzene ring 5-hydroxylation, in which the former route is primarily recruited in the stem for syringyl lignin synthesis, while the latter dominates in the syntheses of 5-hydroxylated phenolics in seeds and seed coat suberin. Our study unveils an additional layer of complexity and versatility of P450 system that the plants evolved for diversifying phenolic repertoires.
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12
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Zhao M, Li J, Zhou S, Rao G, Xu D. Effects of tetracycline on the secondary metabolites and nutritional value of oilseed rape (Brassica napus L.). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:81222-81233. [PMID: 35731441 DOI: 10.1007/s11356-022-21267-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 05/31/2022] [Indexed: 06/15/2023]
Abstract
Secondary metabolism, which helps a plant cope with external stress, is sensitive to environmental changes and plays a prominent role in maintaining plant health. However, few studies of the effects of tetracycline on the relationships between secondary metabolism and plant stress responses have been performed. Here, secondary metabolism, nutritional value, and oxidative stress responses in oilseed rape (Brassica napus L.) exposed to tetracycline for 14 days were investigated. Tetracycline inhibited growth and biomass accumulation and decreased the chlorophyll content. The sinapine, phenol, and flavonoid contents were 118.46%, 99.67%, and 93.07% higher, respectively, but the carotenoid content was 76.47% lower in plants exposed to 8 mg/L tetracycline than the control plants. Tetracycline affected the nutritional value of oilseed rape. Tetracycline decreased the dietary fiber, soluble sugar contents, and microelement (Fe, Mn, and Zn) contents. The antioxidant system also responded strongly to tetracycline. The catalase and peroxidase activities were increased and the superoxide dismutase activity was decreased by tetracycline. Tetracycline caused oxidative damage and secondary metabolite disturbances and adversely affected oilseed rape growth and quality. The results provide a new perspective on the effects of tetracycline on plants in relation to secondary metabolites and improve our understanding involved in the toxicity of tetracycline.
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Affiliation(s)
- Mengting Zhao
- College of Environment and Resources, Zhejiang University of Technology, Hangzhou, 310032, Zhejiang, China
| | - Jun Li
- College of Environmental and Resource Sciences, Zhejiang University, Hangzhou, 310058, Zhejiang, China
| | - Shanshan Zhou
- College of Environment and Resources, Zhejiang University of Technology, Hangzhou, 310032, Zhejiang, China
| | - Guiwei Rao
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou, 310015, China
| | - Dongmei Xu
- Key Laboratory of Pollution Exposure and Health Intervention of Zhejiang Province, College of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou, 310015, China.
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Liu CJ. Cytochrome b 5: A versatile electron carrier and regulator for plant metabolism. FRONTIERS IN PLANT SCIENCE 2022; 13:984174. [PMID: 36212330 PMCID: PMC9539407 DOI: 10.3389/fpls.2022.984174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Accepted: 08/19/2022] [Indexed: 06/16/2023]
Abstract
Cytochrome b 5 (CB5) is a small heme-binding protein, known as an electron donor delivering reducing power to the terminal enzymes involved in oxidative reactions. In plants, the CB5 protein family is substantially expanded both in its isoform numbers and cellular functions, compared to its yeast and mammalian counterparts. As an electron carrier, plant CB5 proteins function not only in fatty acid desaturation, hydroxylation and elongation, but also in the formation of specialized metabolites such as flavonoids, phenolic esters, and heteropolymer lignin. Furthermore, plant CB5s are found to interact with different non-catalytic proteins such as ethylene signaling regulator, cell death inhibitor, and sugar transporters, implicating their versatile regulatory roles in coordinating different metabolic and cellular processes, presumably in respect to the cellular redox status and/or carbon availability. Compared to the plentiful studies on biochemistry and cellular functions of mammalian CB5 proteins, the cellular and metabolic roles of plant CB5 proteins have received far less attention. This article summarizes the fragmentary information pertaining to the discovery of plant CB5 proteins, and discusses the conventional and peculiar functions that plant CB5s might play in different metabolic and cellular processes. Gaining comprehensive insight into the biological functions of CB5 proteins could offer effective biotechnological solutions to tailor plant chemodiversity and cellular responses to environment stimuli.
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14
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Liu Y, Ce F, Tang H, Tian G, Yang L, Qian W, Dong H. Genome-wide analysis of the serine carboxypeptidase-like (SCPL) proteins in Brassica napus L. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2022; 186:310-321. [PMID: 35932655 DOI: 10.1016/j.plaphy.2022.07.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 06/28/2022] [Accepted: 07/13/2022] [Indexed: 06/15/2023]
Abstract
The serine carboxypeptidase-like protein (SCPL) family plays a key part in plant growth, development and stress responses. However, the serine carboxypeptidase-like (SCPL) proteins in Brassica napus L. (B. napus) have not been reported yet. Here, we identified a total of 117 putative SCPL genes in B. napus, which were unevenly distributed on all 19 chromosomes and were divided into three groups (carboxypeptidase Ⅰ to Ⅲ) according to their phylogenetic relationships. Synteny and duplication analysis revealed that the SCPL gene family of B. napus was amplified during allopolyploidization, in which the whole genome triplication and dispersed duplication played critical roles. After the separation of Brassica and Arabidopsis lineages, orthologous gene analysis showed that many SCPL genes were lost during the evolutionary process in B. rapa, B. oleracea and B. napus. Subsequently, the analyses of the gene structure, conserved motifs, cis-element and expression patterns showed that the members in the same group were highly conserved. Furthermore, candidate gene based association study suggested the role of BnSCPL52 in controlling seed number per silique, seed weight and silique length and a CAPS marker was developed to distinguish different haplotypes. Our results provide an overview of rapeseed SCPL genes that enable us for further functional research and benefit the marker-assisted breeding in Brassica napus.
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Affiliation(s)
- Yilin Liu
- College of Agronomy and Biotechnology, Southwest University, Chongqing, 400715, China
| | - Fuquan Ce
- College of Agronomy and Biotechnology, Southwest University, Chongqing, 400715, China
| | - Huan Tang
- College of Agronomy and Biotechnology, Southwest University, Chongqing, 400715, China
| | - Guifu Tian
- College of Agronomy and Biotechnology, Southwest University, Chongqing, 400715, China
| | - Lei Yang
- College of Agronomy and Biotechnology, Southwest University, Chongqing, 400715, China
| | - Wei Qian
- College of Agronomy and Biotechnology, Southwest University, Chongqing, 400715, China; Academy of Agricultural Sciences, Southwest University, Chongqing, 400715, China.
| | - Hongli Dong
- College of Agronomy and Biotechnology, Southwest University, Chongqing, 400715, China.
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15
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Menard GN, Langdon M, Bhunia RK, Shankhapal AR, Noleto-Dias C, Lomax C, Ward JL, Kurup S, Eastmond PJ. Diverting phenylpropanoid pathway flux from sinapine to produce industrially useful 4-vinyl derivatives of hydroxycinnamic acids in Brassicaceous oilseeds. Metab Eng 2022; 70:196-205. [PMID: 35121114 PMCID: PMC8860379 DOI: 10.1016/j.ymben.2022.01.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 12/23/2021] [Accepted: 01/29/2022] [Indexed: 11/24/2022]
Abstract
Sinapine (sinapoylcholine) is an antinutritive phenolic compound that can account for up to 2% of seed weight in brassicaceous oilseed crops and reduces the suitability of their protein-rich seed meal for use as animal feed. Sinapine biosynthesis draws on hydroxycinnamic acid precursors produced by the phenylpropanoid pathway. The 4-vinyl derivatives of several hydroxycinnamic acids have industrial applications. For example, 4-vinyl phenol (4-hydroxystyrene) is a building block for a range of synthetic polymers applied in resins, inks, elastomers, and coatings. Here we have expressed a modified bacterial phenolic acid decarboxylase (PAD) in developing seed of Camelina sativa to redirect phenylpropanoid pathway flux from sinapine biosynthesis to the production of 4-vinyl phenols. PAD expression led to a ∼95% reduction in sinapine content in seeds of both glasshouse and field grown C. sativa and to an accumulation of 4-vinyl derivatives of hydroxycinnamic acids, primarily as glycosides. The most prevalent aglycone was 4-vinyl phenol, but 4-vinyl guaiacol, 6-hydroxy-4-vinyl guaiacol and 4-vinylsyringol (Canolol) were also detected. The molar quantity of 4-vinyl phenol glycosides was more than twice that of sinapine in wild type seeds. PAD expression was not associated with an adverse effect on seed yield, harvest index, seed morphology, storage oil content or germination in either glasshouse or field experiments. Our data show that expression of PAD in brassicaceous oilseeds can supress sinapine accumulation, diverting phenylpropanoid pathway flux into 4-vinyl phenol derivatives, thereby also providing a non-petrochemical source of this class of industrial chemicals. A phenolic acid decarboxylase was expressed in developing Camelina sativa seeds. Production of the antinutritive phenolic compound sinapine was reduced by 95%. Hydroxycinnamic acids were converted to 4-vinyl phenols and accumulated as glycosides. The quantity of 4-vinyl phenols was more than twice that of sinapine in wild type. Seed yield appeared not to be affected in either glasshouse or field experiments.
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16
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Abiola TT, Auckloo N, Woolley JM, Corre C, Poigny S, Stavros VG. Unravelling the Photoprotection Properties of Garden Cress Sprout Extract. Molecules 2021; 26:molecules26247631. [PMID: 34946713 PMCID: PMC8705737 DOI: 10.3390/molecules26247631] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/07/2021] [Accepted: 12/12/2021] [Indexed: 12/03/2022] Open
Abstract
Plants, as with humans, require photoprotection against the potentially damaging effects of overexposure to ultraviolet (UV) radiation. Previously, sinapoyl malate (SM) was identified as the photoprotective agent in thale cress. Here, we seek to identify the photoprotective agent in a similar plant, garden cress, which is currently used in the skincare product Detoxophane nc. To achieve this, we explore the photodynamics of both the garden cress sprout extract and Detoxophane nc with femtosecond transient electronic absorption spectroscopy. With the assistance of liquid chromatography-mass spectrometry, we determine that the main UV-absorbing compound in garden cress sprout extract is SM. Importantly, our studies reveal that the photoprotection properties of the SM in the garden cress sprout extract present in Detoxophane nc are not compromised by the formulation environment. The result suggests that Detoxophane nc containing the garden cress sprout extract may offer additional photoprotection to the end user in the form of a UV filter booster.
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Affiliation(s)
- Temitope T. Abiola
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK; (T.T.A.); (N.A.); (J.M.W.); (C.C.)
| | - Nazia Auckloo
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK; (T.T.A.); (N.A.); (J.M.W.); (C.C.)
- Warwick Integrative Synthetic Biology Centre and School of Life Sciences, University of Warwick, Coventry CV4 7AL, UK
| | - Jack M. Woolley
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK; (T.T.A.); (N.A.); (J.M.W.); (C.C.)
| | - Christophe Corre
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK; (T.T.A.); (N.A.); (J.M.W.); (C.C.)
- Warwick Integrative Synthetic Biology Centre and School of Life Sciences, University of Warwick, Coventry CV4 7AL, UK
| | - Stéphane Poigny
- Mibelle Group Biochemistry, Mibelle AG, Bolimattstrasse 1, CH-5033 Buchs, Switzerland;
| | - Vasilios G. Stavros
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, UK; (T.T.A.); (N.A.); (J.M.W.); (C.C.)
- Correspondence:
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17
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Aarabi F, Rakpenthai A, Barahimipour R, Gorka M, Alseekh S, Zhang Y, Salem MA, Brückner F, Omranian N, Watanabe M, Nikoloski Z, Giavalisco P, Tohge T, Graf A, Fernie AR, Hoefgen R. Sulfur deficiency-induced genes affect seed protein accumulation and composition under sulfate deprivation. PLANT PHYSIOLOGY 2021; 187:2419-2434. [PMID: 34618078 PMCID: PMC8644457 DOI: 10.1093/plphys/kiab386] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 07/17/2021] [Indexed: 06/01/2023]
Abstract
Sulfur deficiency-induced proteins SDI1 and SDI2 play a fundamental role in sulfur homeostasis under sulfate-deprived conditions (-S) by downregulating glucosinolates. Here, we identified that besides glucosinolate regulation under -S, SDI1 downregulates another sulfur pool, the S-rich 2S seed storage proteins in Arabidopsis (Arabidopsis thaliana) seeds. We identified that MYB28 directly regulates 2S seed storage proteins by binding to the At2S4 promoter. We also showed that SDI1 downregulates 2S seed storage proteins by forming a ternary protein complex with MYB28 and MYC2, another transcription factor involved in the regulation of seed storage proteins. These findings have significant implications for the understanding of plant responses to sulfur deficiency.
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Affiliation(s)
- Fayezeh Aarabi
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
| | - Apidet Rakpenthai
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
| | - Rouhollah Barahimipour
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
| | - Michal Gorka
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
| | - Saleh Alseekh
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
| | - Youjun Zhang
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
- Center of Plant Systems Biology and Biotechnology, 4000 Plovdiv, Bulgaria
| | - Mohamed A Salem
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
- Department of Pharmacognosy, Faculty of Pharmacy, Menoufia University, Gamal Abd El Nasr St, Shibin Elkom, Menoufia 32511, Egypt
| | - Franziska Brückner
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
| | - Nooshin Omranian
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
| | - Mutsumi Watanabe
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
- Graduate School of Biological Sciences, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
| | - Zoran Nikoloski
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
- Center of Plant Systems Biology and Biotechnology, 4000 Plovdiv, Bulgaria
- Bioinformatics, Institute of Biochemistry and Biology, University of Potsdam, Karl Liebknecht Str. 24-25, 14476 Potsdam-Golm, Germany
| | - Patrick Giavalisco
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
- Max Planck Institute for Biology of Ageing, Joseph Stelzmann Str. 9b, Cologne 50931, Germany
| | - Takayuki Tohge
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
- Graduate School of Biological Sciences, Nara Institute of Science and Technology, Ikoma, Nara 630-0192, Japan
| | - Alexander Graf
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
| | - Alisdair R Fernie
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
| | - Rainer Hoefgen
- Max-Planck-Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
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Reungoat V, Mouterde LM, Chadni M, Couvreur J, Isidore E, Allais F, Ducatel H, Ioannou I. Simultaneous extraction and enzymatic hydrolysis of mustard bran for the recovery of sinapic acid. FOOD AND BIOPRODUCTS PROCESSING 2021. [DOI: 10.1016/j.fbp.2021.09.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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19
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Mendoza DJ, Maliha M, Raghuwanshi VS, Browne C, Mouterde LMM, Simon GP, Allais F, Garnier G. Diethyl sinapate-grafted cellulose nanocrystals as nature-inspired UV filters in cosmetic formulations. Mater Today Bio 2021; 12:100126. [PMID: 34522878 PMCID: PMC8424589 DOI: 10.1016/j.mtbio.2021.100126] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 08/03/2021] [Accepted: 08/06/2021] [Indexed: 11/24/2022] Open
Abstract
Inspired by nature’s photoprotection mechanisms, we report an effective UV-blocking nanomaterial based on diethyl sinapate-grafted cellulose nanocrystals (CNC-DES). The colloidal stability and UV-blocking performance of CNC-DES in aqueous glycerol (a common humectant in petroleum-free cosmetic formulations) and in a commercially available moisturizing cream were studied. Grafting the water-insoluble DES onto CNCs renders it dispersible in these water-based formulations, thanks to the excellent water-dispersibility of CNC nanoparticles. Glycerol dispersions containing 0.1 to 1.5 wt% CNC-DES display very high UV-blocking activity owing to the anti-UV DES moieties anchored onto CNCs. A facial cream blended with 1.5 wt% CNC-DES exhibits an SPF of 5.03, which is higher than a commercially available sunscreen with the same active ingredient concentration (SPF = 3.84). DPPH radical scavenging assay also showed the antioxidant potential of CNC-DES, albeit coinciding with a significant reduction in antioxidant activity after grafting DES onto CNCs. Cytotoxicity measurements revealed the CNC-DES not to cause significant cytotoxicity to murine fibroblast cells after 24 h of exposure. Overall, CNC-DES exhibits strong anti-UV and antioxidant properties and is water-dispersible, biocompatible, non-greasy, and lightweight. This study demonstrates the exceptional potential of DES-grafted CNCs as nature-inspired UV filters in the next generation of cosmetic formulations, including those for sensitive skins.
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Affiliation(s)
- D J Mendoza
- 15 Alliance Lane (Building 59), Bioresource Processing Research Institute of Australia (BioPRIA), Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia
| | - M Maliha
- 15 Alliance Lane (Building 59), Bioresource Processing Research Institute of Australia (BioPRIA), Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia
| | - V S Raghuwanshi
- 15 Alliance Lane (Building 59), Bioresource Processing Research Institute of Australia (BioPRIA), Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia
| | - C Browne
- 15 Alliance Lane (Building 59), Bioresource Processing Research Institute of Australia (BioPRIA), Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia
| | - L M M Mouterde
- URD Agro-Biotechnologies Industrielles (ABI), CEBB, AgroParisTech, 51110, Pomacle, France
| | - G P Simon
- 14 Alliance Lane (Building 72), Department of Materials Science and Engineering, Monash University, Clayton, VIC 3800, Australia
| | - F Allais
- 15 Alliance Lane (Building 59), Bioresource Processing Research Institute of Australia (BioPRIA), Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia.,URD Agro-Biotechnologies Industrielles (ABI), CEBB, AgroParisTech, 51110, Pomacle, France
| | - G Garnier
- 15 Alliance Lane (Building 59), Bioresource Processing Research Institute of Australia (BioPRIA), Department of Chemical Engineering, Monash University, Clayton, VIC 3800, Australia.,URD Agro-Biotechnologies Industrielles (ABI), CEBB, AgroParisTech, 51110, Pomacle, France
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Lu C, Li Y, Cui Y, Ren J, Qi F, Qu J, Huang H, Dai S. Isolation and Functional Analysis of Genes Involved in Polyacylated Anthocyanin Biosynthesis in Blue Senecio cruentus. FRONTIERS IN PLANT SCIENCE 2021; 12:640746. [PMID: 33692819 PMCID: PMC7937962 DOI: 10.3389/fpls.2021.640746] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2020] [Accepted: 02/01/2021] [Indexed: 05/07/2023]
Abstract
Polyacylated anthocyanins with multiple glycosyl and aromatic acyl groups tend to make flowers display bright and stable blue colours. However, there are few studies on the isolation and functional characterization of genes involved in the polyacylated anthocyanin biosynthesis mechanism, which limits the molecular breeding of truly blue flowers. Senecio cruentus is an important potted ornamental plant, and its blue flowers contain 3',7-polyacylated delphinidin-type anthocyanins that are not reported in any other plants, suggesting that it harbours abundant gene resources for the molecular breeding of blue flowers. In this study, using high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) analysis of blue, carmine and white colours of cineraria cultivars "Venezia" (named VeB, VeC, and VeW, respectively), we found that 3',7-polyacylated anthocyanin, cinerarin, was the main pigment component that determined the blue colour of ray florets of cineraria. Based on the transcriptome sequencing and differential gene expression (DEG) analysis combined with RT- and qRT-PCR, we found two genes encoding uridine diphosphate glycosyltransferase, named ScUGT1 and ScUGT4; two genes encoding acyl-glucoside-dependent glucosyltransferases which belong to glycoside hydrolase family 1 (GH1), named ScAGGT11 and ScAGGT12; one gene encoding serine carboxypeptidase-like acyltransferase ScSCPL2; and two MYB transcriptional factor genes ScMYB2 and ScMYB4, that were specifically highly expressed in the ray florets of VeB, which indicated that these genes may be involved in cinerarin biosynthesis. The function of ScSCPL2 was analysed by virus-induced gene silencing (VIGS) in cineraria leaves combined with HPLC-MS/MS. ScSCPL2 mainly participated in the 3' and 7-position acylation of cinerarin. These results will provide new insight into the molecular basis of the polyacylated anthocyanin biosynthesis mechanism in higher plants and are of great significance for blue flower molecular breeding of ornamental plants.
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Reungoat V, Gaudin M, Flourat AL, Isidore E, Mouterde LM, Allais F, Ducatel H, Ioannou I. Optimization of an ethanol/water-based sinapine extraction from mustard bran using Response Surface Methodology. FOOD AND BIOPRODUCTS PROCESSING 2020. [DOI: 10.1016/j.fbp.2020.06.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Papazian S, Girdwood T, Wessels BA, Poelman EH, Dicke M, Moritz T, Albrectsen BR. Leaf metabolic signatures induced by real and simulated herbivory in black mustard (Brassica nigra). Metabolomics 2019; 15:130. [PMID: 31563978 PMCID: PMC6765471 DOI: 10.1007/s11306-019-1592-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 09/12/2019] [Indexed: 12/16/2022]
Abstract
INTRODUCTION The oxylipin methyl jasmonate (MeJA) is a plant hormone active in response signalling and defence against herbivores. Although MeJA is applied experimentally to mimic herbivory and induce plant defences, its downstream effects on the plant metabolome are largely uncharacterized, especially in the context of primary growth and tissue-specificity of the response. OBJECTIVES We investigated the effects of MeJA-simulated and real caterpillar herbivory on the foliar metabolome of the wild plant Brassica nigra and monitored the herbivore-induced responses in relation to leaf ontogeny. METHODS As single or multiple herbivory treatments, MeJA- and mock-sprayed plants were consecutively exposed to caterpillars or left untreated. Gas chromatography (GC) and liquid chromatography (LC) time-of-flight mass-spectrometry (TOF-MS) were combined to analyse foliar compounds, including central primary and specialized defensive plant metabolites. RESULTS Plant responses were stronger in young leaves, which simultaneously induced higher chlorophyll levels. Both MeJA and caterpillar herbivory induced similar, but not identical, accumulation of tricarboxylic acids (TCAs), glucosinolates (GSLs) and phenylpropanoids (PPs), but only caterpillar feeding led to depletion of amino acids. MeJA followed by caterpillars caused higher induction of defence compounds, including a three-fold increase in the major defence compound allyl-GSL (sinigrin). When feeding on MeJA-treated plants, caterpillars gained less weight indicative of the reduced host-plant quality and enhanced resistance. CONCLUSIONS The metabolomics approach showed that plant responses induced by herbivory extend beyond the regulation of defence metabolism and are tightly modulated throughout leaf development. This leads to a new understanding of the plant metabolic potential that can be exploited for future plant protection strategies.
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Affiliation(s)
- Stefano Papazian
- 0000 0001 1034 3451grid.12650.30Department of Plant Physiology, Umeå University (Umeå Plant Science Centre), 90187 Umeå, Sweden
| | - Tristan Girdwood
- 0000 0001 1034 3451grid.12650.30Department of Plant Physiology, Umeå University (Umeå Plant Science Centre), 90187 Umeå, Sweden
| | - Bernard A. Wessels
- 0000 0001 1034 3451grid.12650.30Department of Plant Physiology, Umeå University (Umeå Plant Science Centre), 90187 Umeå, Sweden
| | - Erik H. Poelman
- 0000 0001 0791 5666grid.4818.5Laboratory of Entomology, Wageningen University, 6700 AA Wageningen, The Netherlands
| | - Marcel Dicke
- 0000 0001 0791 5666grid.4818.5Laboratory of Entomology, Wageningen University, 6700 AA Wageningen, The Netherlands
| | - Thomas Moritz
- 0000 0000 8578 2742grid.6341.0Department of Forest Genetic and Plant Physiology, Swedish University of Agricultural Sciences (Umeå Plant Science Centre), 90187 Umeå, Sweden
| | - Benedicte R. Albrectsen
- 0000 0001 1034 3451grid.12650.30Department of Plant Physiology, Umeå University (Umeå Plant Science Centre), 90187 Umeå, Sweden
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Use of Flavonoids and Cinnamates, the Main Photoprotectors with Natural Origin. Adv Pharmacol Sci 2018; 2018:5341487. [PMID: 30622564 PMCID: PMC6304211 DOI: 10.1155/2018/5341487] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 10/09/2018] [Indexed: 12/21/2022] Open
Abstract
Many pathological problems are initiated by ultraviolet radiation (UVR), such as skin cancer, the most commonly diagnosed cancer worldwide. The UVA (320–400 nm) and UVB (290–320 nm) wavelengths may cause effects such as photoaging, DNA damage, and a series of cellular alterations. The UVA radiation can damage the DNA, oxidize the lipids, and produce dangerous free radicals, which can cause inflammation, modify the gene expression in response to stress, and weaken the skin immune response. With a minor penetration, the UVB radiation is more harmful, being responsible for immediate damage. Ultraviolet radiation light emitted by the sun is considered necessary for the existence of life but cause radiation problems, especially in the skin. The photoprotective activities of plant extracts and isolated composts were evaluated by many reports, as well as the correlation of these compounds with the antioxidant activity. This review presents plant compounds with interest to the cosmetic industry to be used in sunscreens such as flavonoids and cinnamates.
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de Brito Francisco R, Martinoia E. The Vacuolar Transportome of Plant Specialized Metabolites. PLANT & CELL PHYSIOLOGY 2018; 59:1326-1336. [PMID: 29452376 DOI: 10.1093/pcp/pcy039] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Accepted: 02/05/2018] [Indexed: 05/21/2023]
Abstract
The plant vacuole is a cellular compartment that is essential to plant development and growth. Often plant vacuoles accumulate specialized metabolites, also called secondary metabolites, which constitute functionally and chemically diverse compounds that exert in planta many essential functions and improve the plant's fitness. These metabolites provide, for example, chemical defense against herbivorous and pathogens or chemical attractants (color and fragrance) to attract pollinators. The chemical composition of the vacuole is dynamic, and is altered during development and as a response to environmental changes. To some extent these alterations rely on vacuolar transporters, which import and export compounds into and out of the vacuole, respectively. During the past decade, significant progress was made in the identification and functional characterization of the transporters implicated in many aspects of plant specialized metabolism. Still, deciphering the molecular players underlying such processes remains a challenge for the future. In this review, we present a comprehensive summary of the most recent achievements in this field.
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Affiliation(s)
| | - Enrico Martinoia
- Department of Plant and Microbial Biology, University of Zürich, Zürich, Switzerland
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Salem MA, Li Y, Bajdzienko K, Fisahn J, Watanabe M, Hoefgen R, Schöttler MA, Giavalisco P. RAPTOR Controls Developmental Growth Transitions by Altering the Hormonal and Metabolic Balance. PLANT PHYSIOLOGY 2018; 177:565-593. [PMID: 29686055 PMCID: PMC6001337 DOI: 10.1104/pp.17.01711] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Accepted: 04/06/2018] [Indexed: 05/18/2023]
Abstract
Vegetative growth requires the systemic coordination of numerous cellular processes, which are controlled by regulatory proteins that monitor extracellular and intracellular cues and translate them into growth decisions. In eukaryotes, one of the central factors regulating growth is the serine/threonine protein kinase Target of Rapamycin (TOR), which forms complexes with regulatory proteins. To understand the function of one such regulatory protein, Regulatory-Associated Protein of TOR 1B (RAPTOR1B), in plants, we analyzed the effect of raptor1b mutations on growth and physiology in Arabidopsis (Arabidopsis thaliana) by detailed phenotyping, metabolomic, lipidomic, and proteomic analyses. Mutation of RAPTOR1B resulted in a strong reduction of TOR kinase activity, leading to massive changes in central carbon and nitrogen metabolism, accumulation of excess starch, and induction of autophagy. These shifts led to a significant reduction of plant growth that occurred nonlinearly during developmental stage transitions. This phenotype was accompanied by changes in cell morphology and tissue anatomy. In contrast to previous studies in rice (Oryza sativa), we found that the Arabidopsis raptor1b mutation did not affect chloroplast development or photosynthetic electron transport efficiency; however, it resulted in decreased CO2 assimilation rate and increased stomatal conductance. The raptor1b mutants also had reduced abscisic acid levels. Surprisingly, abscisic acid feeding experiments resulted in partial complementation of the growth phenotypes, indicating the tight interaction between TOR function and hormone synthesis and signaling in plants.
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Affiliation(s)
- Mohamed A. Salem
- Max Planck Institute of Molecular Plant Physiology, 14476 Potsdam-Golm, Germany
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
| | - Yan Li
- Max Planck Institute of Molecular Plant Physiology, 14476 Potsdam-Golm, Germany
| | | | - Joachim Fisahn
- Max Planck Institute of Molecular Plant Physiology, 14476 Potsdam-Golm, Germany
| | - Mutsumi Watanabe
- Max Planck Institute of Molecular Plant Physiology, 14476 Potsdam-Golm, Germany
| | - Rainer Hoefgen
- Max Planck Institute of Molecular Plant Physiology, 14476 Potsdam-Golm, Germany
| | | | - Patrick Giavalisco
- Max Planck Institute of Molecular Plant Physiology, 14476 Potsdam-Golm, Germany
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Nguyen TKO, Jamali A, Grand E, Morreel K, Marcelo P, Gontier E, Dauwe R. Phenylpropanoid profiling reveals a class of hydroxycinnamoyl glucaric acid conjugates in Isatis tinctoria leaves. PHYTOCHEMISTRY 2017; 144:127-140. [PMID: 28930667 DOI: 10.1016/j.phytochem.2017.09.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 09/07/2017] [Accepted: 09/08/2017] [Indexed: 05/10/2023]
Abstract
The brassicaceous herb, Isatis tinctoria, is an ancient medicinal plant whose rosette leaf extracts have anti-inflammatory and anti-allergic activity. Brassicaceae are known to accumulate a variety of phenylpropanoids in their rosette leaves acting as antioxidants and a UV-B shield, and these compounds often have pharmacological potential. Nevertheless, knowledge about the phenylpropanoid content of I. tinctoria leaves remains limited to the characterization of a number of flavonoids. In this research, we profiled the methanol extracts of I. tinctoria fresh leaf extracts by liquid chromatography - mass spectrometry (LC-MS) and focused on the phenylpropanoid derivatives. We report the structural characterization of 99 compounds including 18 flavonoids, 21 mono- or oligolignols, 2 benzenoids, and a wide spectrum of 58 hydroxycinnamic acid esters. Besides the sinapate esters of malate, glucose and gentiobiose, which are typical of brassicaceous plants, these conjugates comprised a large variety of glucaric acid esters that have not previously been reported in plants. Feeding with 13C6-glucaric acid showed that glucaric acid is an acyl acceptor of an as yet unknown acyltransferase activity in I. tinctoria rosette leaves. The large amount of hydroxycinnamic acid derivatives changes radically our view of the woad metabolite profile and potentially contributes to the pharmacological activity of I. tinctoria leaf extracts.
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Affiliation(s)
- Thi-Kieu-Oanh Nguyen
- Department of Pharmacological Medical and Agronomical Biotechnology, University of Science and Technology of Hanoi, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Viet Nam.
| | - Arash Jamali
- Plateforme de Microscopie Electronique, Université de Picardie Jules Verne, 33 rue Saint-Leu, 80039 Amiens Cedex, France.
| | - Eric Grand
- LG2A, UFR Sciences, Université de Picardie Jules Verne, CNRS UMR 7378, Institut de Chimie de Picardie, CNRS FR 3085, 33 rue Saint Leu, 80039 Amiens Cedex, France.
| | - Kris Morreel
- Department of Plant Systems Biology, VIB, B-9052 Ghent, Belgium; Department of Plant Biotechnology and Bioinformatics, Ghent University, B-9052 Ghent, Belgium.
| | - Paulo Marcelo
- Plateforme ICAP, Centre Universitaire de Recherche en Santé, Université de Picardie Jules Verne, 1-3, rue des Louvels, 80036 Amiens Cedex 1, Amiens, France.
| | - Eric Gontier
- EA3900 BioPI, UFR Sciences, Université de Picardie Jules Verne, 33 rue Saint Leu, 80039 Amiens Cedex, France.
| | - Rebecca Dauwe
- EA3900 BioPI, UFR Sciences, Université de Picardie Jules Verne, 33 rue Saint Leu, 80039 Amiens Cedex, France.
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Salem MA, Li Y, Wiszniewski A, Giavalisco P. Regulatory-associated protein of TOR (RAPTOR) alters the hormonal and metabolic composition of Arabidopsis seeds, controlling seed morphology, viability and germination potential. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2017; 92:525-545. [PMID: 28845535 DOI: 10.1111/tpj.13667] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Revised: 08/04/2017] [Accepted: 05/18/2017] [Indexed: 06/07/2023]
Abstract
Target of Rapamycin (TOR) is a positive regulator of growth and development in all eukaryotes, which positively regulates anabolic processes like protein synthesis, while repressing catabolic processes, including autophagy. To better understand TOR function we decided to analyze its role in seed development and germination. We therefore performed a detailed phenotypic analysis using mutants of the REGULATORY-ASSOCIATED PROTEIN OF TOR 1B (RAPTOR1B), a conserved TOR interactor, acting as a scaffold protein, which recruits substrates for the TOR kinase. Our results show that raptor1b plants produced seeds that were delayed in germination and less resistant to stresses, leading to decreased viability. These physiological phenotypes were accompanied by morphological changes including decreased seed-coat pigmentation and reduced production of seed-coat mucilage. A detailed molecular analysis revealed that many of these morphological changes were associated with significant changes of the metabolic content of raptor1b seeds, including elevated levels of free amino acids, as well as reduced levels of protective secondary metabolites and storage proteins. Most of these observed changes were accompanied by significantly altered phytohormone levels in the raptor1b seeds, with increases in abscisic acid, auxin and jasmonic acid, which are known to inhibit germination. Delayed germination and seedling growth, observed in the raptor1b seeds, could be partially restored by the exogenous supply of gibberellic acid, indicating that TOR is at the center of a regulatory hub controlling seed metabolism, maturation and germination.
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Affiliation(s)
- Mohamed A Salem
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam-Golm, Germany
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Kasr El-Aini Street, Cairo, 11562, Egypt
| | - Yan Li
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam-Golm, Germany
| | - Andrew Wiszniewski
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam-Golm, Germany
| | - Patrick Giavalisco
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam-Golm, Germany
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Kajla S, Mukhopadhyay A, Pradhan AK. Development of transgenic Brassica juncea lines for reduced seed sinapine content by perturbing phenylpropanoid pathway genes. PLoS One 2017; 12:e0182747. [PMID: 28787461 PMCID: PMC5546701 DOI: 10.1371/journal.pone.0182747] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Accepted: 07/23/2017] [Indexed: 11/19/2022] Open
Abstract
Sinapine is a major anti-nutritive compound that accumulates in the seeds of Brassica species. When ingested, sinapine imparts gritty flavuor in meat and milk of animals and fishy odor to eggs of brown egg layers, thereby compromising the potential use of the valuable protein rich seed meal. Sinapine content in Brassica juncea germplasm ranges from 6.7 to 15.1 mg/g of dry seed weight (DSW) which is significantly higher than the prescribed permissible level of 3.0 mg/g of DSW. Due to limited natural genetic variability, conventional plant breeding approach for reducing the sinapine content has largely been unsuccessful. Hence, transgenic approach for gene silencing was adopted by targeting two genes-SGT and SCT, encoding enzymes UDP- glucose: sinapate glucosyltransferase and sinapoylglucose: choline sinapoyltransferase, respectively, involved in the final two steps of sinapine biosynthetic pathway. These two genes were isolated from B. juncea and eight silencing constructs were developed using three different RNA silencing approaches viz. antisense RNA, RNAi and artificial microRNA. Transgenics in B. juncea were developed following Agrobacterium-mediated transformation. From a total of 1232 independent T0 transgenic events obtained using eight silencing constructs, 25 homozygous lines showing single gene inheritance were identified in the T2 generation. Reduction of seed sinapine content in these lines ranged from 15.8% to 67.2%; the line with maximum reduction had sinapine content of 3.79 mg/g of DSW. The study also revealed that RNAi method was more efficient than the other two methods used in this study.
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Affiliation(s)
- Sachin Kajla
- Department of Genetics, University of Delhi South Campus, New Delhi, India
| | - Arundhati Mukhopadhyay
- Centre for Genetic Manipulation of Crop Plants, University of Delhi South Campus, New Delhi, India
| | - Akshay K. Pradhan
- Department of Genetics, University of Delhi South Campus, New Delhi, India
- Centre for Genetic Manipulation of Crop Plants, University of Delhi South Campus, New Delhi, India
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Bi B, Tang J, Han S, Guo J, Miao Y. Sinapic acid or its derivatives interfere with abscisic acid homeostasis during Arabidopsis thaliana seed germination. BMC PLANT BIOLOGY 2017; 17:99. [PMID: 28587634 PMCID: PMC5461752 DOI: 10.1186/s12870-017-1048-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2016] [Accepted: 05/25/2017] [Indexed: 05/10/2023]
Abstract
BACKGROUND Sinapic acid and its esters have broad functions in different stages of seed germination and plant development and are thought to play a role in protecting against ultraviolet irradiation. To better understand the interactions between sinapic acid esters and seed germination processes in response to various stresses, we analyzed the role of the plant hormone abscisic acid (ABA) in the regulation of sinapic acid esters involved in seed germination and early seedling growth. RESULTS We found that exogenous sinapic acid promotes seed germination in a dose-dependent manner in Arabidopsis thaliana. High-performance liquid chromatography mass spectrometry analysis showed that exogenous sinapic acid increased the sinapoylcholine content of imbibed seeds. Furthermore, sinapic acid affected ABA catabolism, resulting in reduced ABA levels and increased levels of the ABA-glucose ester. Using mutants deficient in the synthesis of sinapate esters, we showed that the germination of mutant sinapoylglucose accumulator 2 (sng2) and bright trichomes 1 (brt1) seeds was more sensitive to ABA than the wild-type. Moreover, Arabidopsis mutants deficient in either abscisic acid deficient 2 (ABA2) or abscisic acid insensitive 3 (ABI3) displayed increased expression of the sinapoylglucose:choline sinapoyltransferase (SCT) and sinapoylcholine esterase (SCE) genes with sinapic acid treatment. This treatment also affected the accumulation of sinapoylcholine and free choline during seed germination. CONCLUSIONS We demonstrated that sinapoylcholine, which constitutes the major phenolic component in seeds among various minor sinapate esters, affected ABA homeostasis during seed germination and early seedling growth in Arabidopsis. Our findings provide insights into the role of sinapic acid and its esters in regulating ABA-mediated inhibition of Arabidopsis seed germination in response to drought stress.
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Affiliation(s)
- Baodi Bi
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, 85 Minglun Street, Kaifeng, 475001, China
| | - Jingliang Tang
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, 85 Minglun Street, Kaifeng, 475001, China
| | - Shuang Han
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, 85 Minglun Street, Kaifeng, 475001, China
| | - Jinggong Guo
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, 85 Minglun Street, Kaifeng, 475001, China
| | - Yuchen Miao
- Institute of Plant Stress Biology, State Key Laboratory of Cotton Biology, Department of Biology, Henan University, 85 Minglun Street, Kaifeng, 475001, China.
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de Vries J, de Vries S, Slamovits CH, Rose LE, Archibald JM. How Embryophytic is the Biosynthesis of Phenylpropanoids and their Derivatives in Streptophyte Algae? PLANT & CELL PHYSIOLOGY 2017; 58:934-945. [PMID: 28340089 DOI: 10.1093/pcp/pcx037] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2016] [Accepted: 03/08/2017] [Indexed: 05/21/2023]
Abstract
The origin of land plants from algae is a long-standing question in evolutionary biology. It is becoming increasingly clear that many characters that were once assumed to be 'embryophyte specific' can in fact be found in their closest algal relatives, the streptophyte algae. One such case is the phenylpropanoid pathway. While biochemical data indicate that streptophyte algae harbor lignin-like components, the phenylpropanoid core pathway, which serves as the backbone of lignin biosynthesis, has been proposed to have arisen at the base of the land plants. Here we revisit this hypothesis using a wealth of new sequence data from streptophyte algae. Tracing the biochemical pathway towards lignin biogenesis, we show that most of the genes required for phenylpropanoid synthesis and the precursors for lignin production were already present in streptophyte algae. Nevertheless, phylogenetic analyses and protein structure predictions of one of the key enzyme classes in lignin production, cinnamyl alcohol dehydrogenase (CAD), suggest that CADs of streptophyte algae are more similar to sinapyl alcohol dehydrogenases (SADs). This suggests that the end-products of the pathway leading to lignin biosynthesis in streptophyte algae may facilitate the production of lignin-like compounds and defense molecules. We hypothesize that streptophyte algae already possessed the genetic toolkit from which the capacity to produce lignin later evolved in vascular plants.
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Affiliation(s)
- Jan de Vries
- Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Sophie de Vries
- Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia, Canada
- Population Genetics, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
| | - Claudio H Slamovits
- Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia, Canada
- Canadian Institute for Advanced Research, Program in Integrated Microbial Biodiversity, Toronto, ON, Canada
| | - Laura E Rose
- Population Genetics, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
- CEPLAS - Cluster of Excellence in Plant Sciences, Heinrich-Heine University Düsseldorf, Düsseldorf, Germany
| | - John M Archibald
- Department of Biochemistry and Molecular Biology, Dalhousie University, Halifax, Nova Scotia, Canada
- Canadian Institute for Advanced Research, Program in Integrated Microbial Biodiversity, Toronto, ON, Canada
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Gall JTA, Thomas J, Xie F, Wang Z, Jäger W, Xu Y. Rotational spectroscopy of the methyl glycidate–water complex: conformation and water and methyl rotor tunnelling motions. Phys Chem Chem Phys 2017; 19:29508-29515. [DOI: 10.1039/c7cp05464e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Rotational transitions of methyl glycidate–water exhibit relatively large water tunnelling splittings, a surprise considering that water is quite tightly bound.
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Affiliation(s)
- Jason T. A. Gall
- Department of Chemistry
- University of Alberta
- 11227 Saskatchewan Drive
- Edmonton
- Canada
| | - Javix Thomas
- Department of Chemistry
- University of Alberta
- 11227 Saskatchewan Drive
- Edmonton
- Canada
| | - Fan Xie
- Department of Chemistry
- University of Alberta
- 11227 Saskatchewan Drive
- Edmonton
- Canada
| | - Zhibo Wang
- Department of Chemistry
- University of Alberta
- 11227 Saskatchewan Drive
- Edmonton
- Canada
| | - Wolfgang Jäger
- Department of Chemistry
- University of Alberta
- 11227 Saskatchewan Drive
- Edmonton
- Canada
| | - Yunjie Xu
- Department of Chemistry
- University of Alberta
- 11227 Saskatchewan Drive
- Edmonton
- Canada
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Ferruzza S, Natella F, Ranaldi G, Murgia C, Rossi C, Trošt K, Mattivi F, Nardini M, Maldini M, Giusti AM, Moneta E, Scaccini C, Sambuy Y, Morelli G, Baima S. Nutraceutical Improvement Increases the Protective Activity of Broccoli Sprout Juice in a Human Intestinal Cell Model of Gut Inflammation. Pharmaceuticals (Basel) 2016; 9:E48. [PMID: 27529258 PMCID: PMC5039501 DOI: 10.3390/ph9030048] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 08/05/2016] [Accepted: 08/08/2016] [Indexed: 12/27/2022] Open
Abstract
Benefits to health from a high consumption of fruits and vegetables are well established and have been attributed to bioactive secondary metabolites present in edible plants. However, the effects of specific health-related phytochemicals within a complex food matrix are difficult to assess. In an attempt to address this problem, we have used elicitation to improve the nutraceutical content of seedlings of Brassica oleracea grown under controlled conditions. Analysis, by LC-MS, of the glucosinolate, isothiocyanate and phenolic compound content of juices obtained from sprouts indicated that elicitation induces an enrichment of several phenolics, particularly of the anthocyanin fraction. To test the biological activity of basal and enriched juices we took advantage of a recently developed in vitro model of inflamed human intestinal epithelium. Both sprouts' juices protected intestinal barrier integrity in Caco-2 cells exposed to tumor necrosis factor α under marginal zinc deprivation, with the enriched juice showing higher protection. Multivariate regression analysis indicated that the extent of rescue from stress-induced epithelial dysfunction correlated with the composition in bioactive molecules of the juices and, in particular, with a group of phenolic compounds, including several anthocyanins, quercetin-3-Glc, cryptochlorogenic, neochlorogenic and cinnamic acids.
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Affiliation(s)
- Simonetta Ferruzza
- Food and Nutrition Research Centre, Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, Via Ardeatina 546, 00178 Rome, Italy.
| | - Fausta Natella
- Food and Nutrition Research Centre, Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, Via Ardeatina 546, 00178 Rome, Italy.
| | - Giulia Ranaldi
- Food and Nutrition Research Centre, Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, Via Ardeatina 546, 00178 Rome, Italy.
| | - Chiara Murgia
- Food and Nutrition Research Centre, Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, Via Ardeatina 546, 00178 Rome, Italy.
| | - Carlotta Rossi
- Food and Nutrition Research Centre, Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, Via Ardeatina 546, 00178 Rome, Italy.
| | - Kajetan Trošt
- Food Quality and Nutrition Department, Research and Innovation Centre, Fondazione Edmund Mach, Via Edmund Mach 1, 38010 San Michele all'Adige (TN), Italy.
| | - Fulvio Mattivi
- Food Quality and Nutrition Department, Research and Innovation Centre, Fondazione Edmund Mach, Via Edmund Mach 1, 38010 San Michele all'Adige (TN), Italy.
| | - Mirella Nardini
- Food and Nutrition Research Centre, Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, Via Ardeatina 546, 00178 Rome, Italy.
| | - Mariateresa Maldini
- Food and Nutrition Research Centre, Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, Via Ardeatina 546, 00178 Rome, Italy.
| | - Anna Maria Giusti
- Department of Experimental Medicine, Section of Medical Physiopathology, Food Science and Endocrinology, Sapienza University, P.le Aldo Moro 5, 00185 Rome, Italy.
| | - Elisabetta Moneta
- Food and Nutrition Research Centre, Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, Via Ardeatina 546, 00178 Rome, Italy.
| | - Cristina Scaccini
- Food and Nutrition Research Centre, Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, Via Ardeatina 546, 00178 Rome, Italy.
| | - Yula Sambuy
- Food and Nutrition Research Centre, Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, Via Ardeatina 546, 00178 Rome, Italy.
| | - Giorgio Morelli
- Food and Nutrition Research Centre, Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, Via Ardeatina 546, 00178 Rome, Italy.
| | - Simona Baima
- Food and Nutrition Research Centre, Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, Via Ardeatina 546, 00178 Rome, Italy.
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Identification and Characterization of DcUSAGT1, a UDP-Glucose: Sinapic Acid Glucosyltransferase from Purple Carrot Taproots. PLoS One 2016; 11:e0154938. [PMID: 27171142 PMCID: PMC4865115 DOI: 10.1371/journal.pone.0154938] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 04/21/2016] [Indexed: 11/25/2022] Open
Abstract
Purple carrots accumulate abundant cyanidin-based anthocyanins in taproots. UDP-glucose: sinapic acid glucosyltransferase (USAGT) can transfer the glucose moiety to the carboxyl group of sinapic acid thereby forming the ester bond between the carboxyl-C and the C1 of glucose (1-O-sinapoylglucose). 1-O-sinapoylglucose can serve as an acyl donor in acylation of anthocyanins and generate cyanidin 3-xylosyl (sinapoylglucosyl) galactoside in purple carrots. This final product helps stabilize the accumulation of anthocyanins. In this study, a gene named DcUSAGT1 encoding USAGT was cloned from ‘Deep purple’ carrot taproots. Enzymatic activity was determined using high performance liquid chromatography (HPLC). The optimal temperature and pH value were 30°C and 7.0, respectively. Kinetic analysis suggested a Km (sinapic acid) of 0.59 mM. Expression profiles of DcUSAGT1 showed high expression levels in the taproots of all the three purple carrot cultivars but low expression levels in those of non-purple carrot cultivars. The USAGT activity of different carrots in vitro indicated that crude enzyme extracted from the purple carrot taproots rather than non-purple carrot taproots exhibited USAGT activity. These results indicated that DcUSAGT1 may influence anthocyanin biosynthesis of purple carrot taproots.
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Hettwer K, Böttcher C, Frolov A, Mittasch J, Albert A, von Roepenack-Lahaye E, Strack D, Milkowski C. Dynamic metabolic changes in seeds and seedlings of Brassica napus (oilseed rape) suppressing UGT84A9 reveal plasticity and molecular regulation of the phenylpropanoid pathway. PHYTOCHEMISTRY 2016; 124:46-57. [PMID: 26833384 DOI: 10.1016/j.phytochem.2016.01.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 01/13/2016] [Accepted: 01/20/2016] [Indexed: 06/05/2023]
Abstract
In Brassica napus, suppression of the key biosynthetic enzyme UDP-glucose:sinapic acid glucosyltransferase (UGT84A9) inhibits the biosynthesis of sinapine (sinapoylcholine), the major phenolic component of seeds. Based on the accumulation kinetics of a total of 158 compounds (110 secondary and 48 primary metabolites), we investigated how suppression of the major sink pathway of sinapic acid impacts the metabolome of developing seeds and seedlings. In UGT84A9-suppressing (UGT84A9i) lines massive alterations became evident in late stages of seed development affecting the accumulation levels of 58 secondary and 7 primary metabolites. UGT84A9i seeds were characterized by decreased amounts of various hydroxycinnamic acid (HCA) esters, and increased formation of sinapic and syringic acid glycosides. This indicates glycosylation and β-oxidation as metabolic detoxification strategies to bypass intracellular accumulation of sinapic acid. In addition, a net loss of sinapic acid upon UGT84A9 suppression may point to a feedback regulation of HCA biosynthesis. Surprisingly, suppression of UGT84A9 under control of the seed-specific NAPINC promoter was maintained in cotyledons during the first two weeks of seedling development and associated with a reduced and delayed transformation of sinapine into sinapoylmalate. The lack of sinapoylmalate did not interfere with plant fitness under UV-B stress. Increased UV-B radiation triggered the accumulation of quercetin conjugates whereas the sinapoylmalate level was not affected.
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Affiliation(s)
- Karina Hettwer
- Department of Secondary Metabolism, Leibniz Institute of Plant Biochemistry, Weinberg 3, 06120 Halle (Saale), Germany
| | - Christoph Böttcher
- Department of Stress and Developmental Biology, Leibniz Institute of Plant Biochemistry, Weinberg 3, 06120 Halle (Saale), Germany; Julius Kühn Institute, Federal Research Centre for Cultivated Plants, Institute for Ecological Chemistry, Plant Analysis and Stored Product Protection, Königin-Luise-Strasse 19, 14195 Berlin, Germany
| | - Andrej Frolov
- Department of Secondary Metabolism, Leibniz Institute of Plant Biochemistry, Weinberg 3, 06120 Halle (Saale), Germany
| | - Juliane Mittasch
- Department of Secondary Metabolism, Leibniz Institute of Plant Biochemistry, Weinberg 3, 06120 Halle (Saale), Germany; Martin-Luther-University Halle-Wittenberg, Interdisciplinary Center for Crop Plant Research (IZN), Hoher Weg 8, 06120 Halle (Saale), Germany
| | - Andreas Albert
- Research Unit Environmental Simulation, Institute of Biochemical Plant Pathology, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Neuherberg, Germany
| | - Edda von Roepenack-Lahaye
- Department of Stress and Developmental Biology, Leibniz Institute of Plant Biochemistry, Weinberg 3, 06120 Halle (Saale), Germany
| | - Dieter Strack
- Department of Secondary Metabolism, Leibniz Institute of Plant Biochemistry, Weinberg 3, 06120 Halle (Saale), Germany
| | - Carsten Milkowski
- Martin-Luther-University Halle-Wittenberg, Interdisciplinary Center for Crop Plant Research (IZN), Hoher Weg 8, 06120 Halle (Saale), Germany.
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Brock MT, Lucas LK, Anderson NA, Rubin MJ, Markelz RJC, Covington MF, Devisetty UK, Chapple C, Maloof JN, Weinig C. Genetic architecture, biochemical underpinnings and ecological impact of floral UV patterning. Mol Ecol 2016; 25:1122-40. [PMID: 26800256 DOI: 10.1111/mec.13542] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 12/17/2015] [Accepted: 12/22/2015] [Indexed: 11/29/2022]
Abstract
Floral attraction traits can significantly affect pollinator visitation patterns, but adaptive evolution of these traits may be constrained by correlations with other traits. In some cases, molecular pathways contributing to floral attraction are well characterized, offering the opportunity to explore loci potentially underlying variation among individuals. Here, we quantify the range of variation in floral UV patterning (i.e. UV 'bulls-eye nectar guides) among crop and wild accessions of Brassica rapa. We then use experimental crosses to examine the genetic architecture, candidate loci and biochemical underpinnings of this patterning as well as phenotypic manipulations to test the ecological impact. We find qualitative variation in UV patterning between wild (commonly lacking UV patterns) and crop (commonly exhibiting UV patterns) accessions. Similar to the majority of crops, recombinant inbred lines (RILs) derived from an oilseed crop × WI fast-plant® cross exhibit UV patterns, the size of which varies extensively among genotypes. In RILs, we further observe strong statistical-genetic and QTL correlations within petal morphological traits and within measurements of petal UV patterning; however, correlations between morphology and UV patterning are weak or nonsignificant, suggesting that UV patterning is regulated and may evolve independently of overall petal size. HPLC analyses reveal a high concentration of sinapoyl glucose in UV-absorbing petal regions, which, in concert with physical locations of UV-trait QTLs, suggest a regulatory and structural gene as candidates underlying observed quantitative variation. Finally, insects prefer flowers with UV bulls-eye patterns over those that lack patterns, validating the importance of UV patterning in pollen-limited populations of B. rapa.
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Affiliation(s)
- Marcus T Brock
- Department of Botany, University of Wyoming, Laramie, WY, 82071, USA
| | - Lauren K Lucas
- Department of Biology, Utah State University, Logan, UT, 84322, USA
| | - Nickolas A Anderson
- Department of Biochemistry, Purdue University, West Lafayette, IN, 47907, USA
| | - Matthew J Rubin
- Department of Botany, University of Wyoming, Laramie, WY, 82071, USA
| | - R J Cody Markelz
- Department of Plant Biology, University of California, Davis, CA, 95616, USA
| | - Michael F Covington
- Department of Plant Biology, University of California, Davis, CA, 95616, USA
| | - Upendra K Devisetty
- Department of Plant Biology, University of California, Davis, CA, 95616, USA
| | - Clint Chapple
- Department of Biochemistry, Purdue University, West Lafayette, IN, 47907, USA
| | - Julin N Maloof
- Department of Plant Biology, University of California, Davis, CA, 95616, USA
| | - Cynthia Weinig
- Department of Botany, University of Wyoming, Laramie, WY, 82071, USA.,Department of Molecular Biology, University of Wyoming, Laramie, WY, 82071, USA
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Salem MA, Jüppner J, Bajdzienko K, Giavalisco P. Protocol: a fast, comprehensive and reproducible one-step extraction method for the rapid preparation of polar and semi-polar metabolites, lipids, proteins, starch and cell wall polymers from a single sample. PLANT METHODS 2016; 12:45. [PMID: 27833650 PMCID: PMC5103428 DOI: 10.1186/s13007-016-0146-2] [Citation(s) in RCA: 117] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 10/26/2016] [Indexed: 05/20/2023]
Abstract
BACKGROUND The elucidation of complex biological systems requires integration of multiple molecular parameters. Accordingly, high throughput methods like transcriptomics, proteomics, metabolomics and lipidomics have emerged to provide the tools for successful system-wide investigations. Unfortunately, optimized analysis of different compounds requires specific extraction procedures in combination with specific analytical instrumentation. However, the most efficient extraction protocols often only cover a restricted number of compounds due to the different physico-chemical properties of these biological compounds. Consequently, comprehensive analysis of several molecular components like polar primary metabolites next to lipids or proteins require multiple aliquots to enable the specific extraction procedures required to cover these diverse compound classes. This multi-parallel sample handling of different sample aliquots is therefore not only more sample intensive, it also requires more time and effort to obtain the required extracts. RESULTS To circumvent large sample amounts, distributed into several aliquots for the comprehensive extraction of most relevant biological compounds, we developed a simple, robust and reproducible two-phase liquid-liquid extraction protocol. This one-step extraction protocol allows for the analysis of polar-, semi-polar and hydrophobic metabolites, next to insoluble or precipitated compounds, including proteins, starch and plant cell wall components, from a single sample. The method is scalable regarding the used sample amounts but also the employed volumes and can be performed in microcentrifuge tubes, enabling high throughput analysis. The obtained fractions are fully compatible with common analytical methods, including spectroscopic, chromatographic and mass spectrometry-based techniques. To document the utility of the described protocol, we used 25 mg of Arabidopsis thaliana rosette leaves for the generation of multi-omics data sets, covering lipidomics, metabolomics and proteomics. The obtained data allowed us to measure and annotate more than 200 lipid compounds, 100 primary metabolites, 50 secondary metabolites and 2000 proteins. CONCLUSIONS The described extraction protocol provides a simple and straightforward method for the efficient extraction of lipids, metabolites and proteins from minute amounts of a single sample, enabling the targeted but also untargeted high-throughput analyses of diverse biological tissues and samples.
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Affiliation(s)
- Mohamed A. Salem
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
- Department of Pharmacognosy, Faculty of Pharmacy, Cairo University, Kasr El-Aini Street, Cairo, 11562 Egypt
| | - Jessica Jüppner
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
| | - Krzysztof Bajdzienko
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
| | - Patrick Giavalisco
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
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Le Roy J, Huss B, Creach A, Hawkins S, Neutelings G. Glycosylation Is a Major Regulator of Phenylpropanoid Availability and Biological Activity in Plants. FRONTIERS IN PLANT SCIENCE 2016; 7:735. [PMID: 27303427 PMCID: PMC4880792 DOI: 10.3389/fpls.2016.00735] [Citation(s) in RCA: 203] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2016] [Accepted: 05/12/2016] [Indexed: 05/18/2023]
Abstract
The phenylpropanoid pathway in plants is responsible for the biosynthesis of a huge amount of secondary metabolites derived from phenylalanine and tyrosine. Both flavonoids and lignins are synthesized at the end of this very diverse metabolic pathway, as well as many intermediate molecules whose precise biological functions remain largely unknown. The diversity of these molecules can be further increased under the action of UDP-glycosyltransferases (UGTs) leading to the production of glycosylated hydroxycinnamates and related aldehydes, alcohols and esters. Glycosylation can change phenylpropanoid solubility, stability and toxic potential, as well as influencing compartmentalization and biological activity. (De)-glycosylation therefore represents an extremely important regulation point in phenylpropanoid homeostasis. In this article we review recent knowledge on the enzymes involved in regulating phenylpropanoid glycosylation status and availability in different subcellular compartments. We also examine the potential link between monolignol glycosylation and lignification by exploring co-expression of lignin biosynthesis genes and phenolic (de)glycosylation genes. Of the different biological roles linked with their particular chemical properties, phenylpropanoids are often correlated with the plant's stress management strategies that are also regulated by glycosylation. UGTs can for instance influence the resistance of plants during infection by microorganisms and be involved in the mechanisms related to environmental changes. The impact of flavonoid glycosylation on the color of flowers, leaves, seeds and fruits will also be discussed. Altogether this paper underlies the fact that glycosylation and deglycosylation are powerful mechanisms allowing plants to regulate phenylpropanoid localisation, availability and biological activity.
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Neugart S, Krumbein A, Zrenner R. Influence of Light and Temperature on Gene Expression Leading to Accumulation of Specific Flavonol Glycosides and Hydroxycinnamic Acid Derivatives in Kale (Brassica oleracea var. sabellica). FRONTIERS IN PLANT SCIENCE 2016; 7:326. [PMID: 27066016 PMCID: PMC4812050 DOI: 10.3389/fpls.2016.00326] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 03/03/2016] [Indexed: 05/05/2023]
Abstract
Light intensity and temperature are very important signals for the regulation of plant growth and development. Plants subjected to less favorable light or temperature conditions often respond with accumulation of secondary metabolites. Some of these metabolites have been identified as bioactive compounds, considered to exert positive effects on human health when consumed regularly. In order to test a typical range of growth parameters for the winter crop Brassica oleracea var. sabellica, plants were grown either at 400 μmol m(-2) s(-1) or 100 μmol m(-2) s(-1) at 10°C, or at 400 μmol m(-2) s(-1) with 5 or 15°C. The higher light intensity overall increased flavonol content of leaves, favoring the main quercetin glycosides, a caffeic acid monoacylated kaempferol triglycoside, and disinapoyl-gentiobiose. The higher temperature mainly increased the hydroxycinnamic acid derivative disinapoyl-gentiobiose, while at lower temperature synthesis is in favor of very complex sinapic acid acylated flavonol tetraglycosides such as kaempferol-3-O-sinapoyl-sophoroside-7-O-diglucoside. A global analysis of light and temperature dependent alterations of gene expression in B. oleracea var. sabellica leaves was performed with the most comprehensive Brassica microarray. When compared to the light experiment much less genes were differentially expressed in kale leaves grown at 5 or 15°C. A structured evaluation of differentially expressed genes revealed the expected enrichment in the functional categories of e.g. protein degradation at different light intensities or phytohormone metabolism at different temperature. Genes of the secondary metabolism namely phenylpropanoids are significantly enriched with both treatments. Thus, the genome of B. oleracea was screened for predicted genes putatively involved in the biosynthesis of flavonoids and hydroxycinnamic acid derivatives. All identified B. oleracea genes were analyzed for their most specific 60-mer oligonucleotides present on the 2 × 105 K format Brassica microarray. Expression differences were correlated to the structure-dependent response of flavonoid glycosides and hydroxycinnamic acid derivatives to alterations in either light or temperature. The altered metabolite accumulation was mainly reflected on gene expression level of core biosynthetic pathway genes and gave further hints to an isoform specific functional specialization.
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De Bruyn F, De Paepe B, Maertens J, Beauprez J, De Cocker P, Mincke S, Stevens C, De Mey M. Development of an in vivo glucosylation platform by coupling production to growth: Production of phenolic glucosides by a glycosyltransferase of Vitis vinifera. Biotechnol Bioeng 2015; 112:1594-603. [PMID: 25728421 DOI: 10.1002/bit.25570] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Revised: 02/08/2015] [Accepted: 02/11/2015] [Indexed: 01/02/2023]
Abstract
Glycosylation of small molecules can significantly alter their properties such as solubility, stability, and/or bioactivity, making glycosides attractive and highly demanded compounds. Consequently, many biotechnological glycosylation approaches have been developed, with enzymatic synthesis and whole-cell biocatalysis as the most prominent techniques. However, most processes still suffer from low yields, production rates and inefficient UDP-sugar formation. To this end, a novel metabolic engineering strategy is presented for the in vivo glucosylation of small molecules in Escherichia coli W. This strategy focuses on the introduction of an alternative sucrose metabolism using sucrose phosphorylase for the direct and efficient generation of glucose 1-phosphate as precursor for UDP-glucose formation and fructose, which serves as a carbon source for growth. By targeted gene deletions, a split metabolism is created whereby glucose 1-phosphate is rerouted from the glycolysis to product formation (i.e., glucosylation). Further, the production pathway was enhanced by increasing and preserving the intracellular UDP-glucose pool. Expression of a versatile glucosyltransferase from Vitis vinifera (VvGT2) enabled the strain to efficiently produce 14 glucose esters of various hydroxycinnamates and hydroxybenzoates with conversion yields up to 100%. To our knowledge, this fast growing (and simultaneously producing) E. coli mutant is the first versatile host described for the glucosylation of phenolic acids in a fermentative way using only sucrose as a cheap and sustainable carbon source.
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Affiliation(s)
- Frederik De Bruyn
- Centre of Expertise - Industrial Biotechnology and Biocatalysis, Department of Biochemical and Microbial Technology, Ghent University, Coupure links 653, 9000, Ghent, Belgium.
| | - Brecht De Paepe
- Centre of Expertise - Industrial Biotechnology and Biocatalysis, Department of Biochemical and Microbial Technology, Ghent University, Coupure links 653, 9000, Ghent, Belgium
| | - Jo Maertens
- Centre of Expertise - Industrial Biotechnology and Biocatalysis, Department of Biochemical and Microbial Technology, Ghent University, Coupure links 653, 9000, Ghent, Belgium
| | - Joeri Beauprez
- Centre of Expertise - Industrial Biotechnology and Biocatalysis, Department of Biochemical and Microbial Technology, Ghent University, Coupure links 653, 9000, Ghent, Belgium
| | - Pieter De Cocker
- Centre of Expertise - Industrial Biotechnology and Biocatalysis, Department of Biochemical and Microbial Technology, Ghent University, Coupure links 653, 9000, Ghent, Belgium
| | - Stein Mincke
- Research Group SynBioC, Department of Sustainable Organic Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, 9000, Ghent, Belgium
| | - Christian Stevens
- Research Group SynBioC, Department of Sustainable Organic Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, 9000, Ghent, Belgium
| | - Marjan De Mey
- Centre of Expertise - Industrial Biotechnology and Biocatalysis, Department of Biochemical and Microbial Technology, Ghent University, Coupure links 653, 9000, Ghent, Belgium
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Kortesniemi M, Vuorinen AL, Sinkkonen J, Yang B, Rajala A, Kallio H. NMR metabolomics of ripened and developing oilseed rape (Brassica napus) and turnip rape (Brassica rapa). Food Chem 2014; 172:63-70. [PMID: 25442524 DOI: 10.1016/j.foodchem.2014.09.040] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Revised: 07/29/2014] [Accepted: 09/09/2014] [Indexed: 11/18/2022]
Abstract
The oilseeds of the commercially important oilseed rape (Brassica napus) and turnip rape (Brassica rapa) were investigated with (1)H NMR metabolomics. The compositions of ripened (cultivated in field trials) and developing seeds (cultivated in controlled conditions) were compared in multivariate models using principal component analysis (PCA), partial least squares discriminant analysis (PLS-DA), and orthogonal partial least squares discriminant analysis (OPLS-DA). Differences in the major lipids and the minor metabolites between the two species were found. A higher content of polyunsaturated fatty acids and sucrose were observed in turnip rape, while the overall oil content and sinapine levels were higher in oilseed rape. The genotype traits were negligible compared to the effect of the growing site and concomitant conditions on the oilseed metabolome. This study demonstrates the applicability of NMR-based analysis in determining the species, geographical origin, developmental stage, and quality of oilseed Brassicas.
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Affiliation(s)
- Maaria Kortesniemi
- Food Chemistry and Food Development, Department of Biochemistry, University of Turku, FI-20014 Turku, Finland.
| | - Anssi L Vuorinen
- Food Chemistry and Food Development, Department of Biochemistry, University of Turku, FI-20014 Turku, Finland
| | - Jari Sinkkonen
- Department of Chemistry, University of Turku, FI-20014 Turku, Finland
| | - Baoru Yang
- Food Chemistry and Food Development, Department of Biochemistry, University of Turku, FI-20014 Turku, Finland
| | - Ari Rajala
- MTT Plant Production Research, FI-31600 Jokioinen, Finland
| | - Heikki Kallio
- Food Chemistry and Food Development, Department of Biochemistry, University of Turku, FI-20014 Turku, Finland
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Mayengbam S, Aachary A, Thiyam-Holländer U. Endogenous Phenolics in Hulls and Cotyledons of Mustard and Canola: A Comparative Study on Its Sinapates and Antioxidant Capacity. Antioxidants (Basel) 2014; 3:544-58. [PMID: 26785070 PMCID: PMC4665413 DOI: 10.3390/antiox3030544] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 05/20/2014] [Accepted: 05/20/2014] [Indexed: 12/13/2022] Open
Abstract
Endogenous sinapic acid (SA), sinapine (SP), sinapoyl glucose (SG) and canolol (CAN) of canola and mustard seeds are the potent antioxidants in various lipid-containing systems. The study investigated these phenolic antioxidants using different fractions of canola and mustard seeds. Phenolic compounds were extracted from whole seeds and their fractions: hulls and cotyledons, using 70% methanol by the ultrasonication method and quantified using HPLC-DAD. The major phenolics from both hulls and cotyledons extracts were SP, with small amounts of SG, and SA with a significant difference of phenolic contents between the two seed fractions. Cotyledons showed relatively high content of SP, SA, SG and total phenolics in comparison to hulls (p < 0.001). The concentration of SP in different fractions ranged from 1.15 ± 0.07 to 12.20 ± 1.16 mg/g and followed a decreasing trend- canola cotyledons > mustard cotyledons > mustard seeds > canola seeds > mustard hulls > canola hulls. UPLC-tandem Mass Spectrometry confirmed the presence of sinapates and its fragmentation in these extracts. Further, a high degree of correlation (r = 0.93) was noted between DPPH scavenging activity and total phenolic content.
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Affiliation(s)
- Shyamchand Mayengbam
- Department of Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada.
| | - Ayyappan Aachary
- Department of Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada.
- Richardson Centre for Functional Foods and Nutraceuticals & Department of Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada.
| | - Usha Thiyam-Holländer
- Department of Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada.
- Richardson Centre for Functional Foods and Nutraceuticals & Department of Human Nutritional Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada.
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Sasaki N, Nakayama T. Achievements and Perspectives in Biochemistry Concerning Anthocyanin Modification for Blue Flower Coloration. ACTA ACUST UNITED AC 2014; 56:28-40. [DOI: 10.1093/pcp/pcu097] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Pastor V, Balmer A, Gamir J, Flors V, Mauch-Mani B. Preparing to fight back: generation and storage of priming compounds. FRONTIERS IN PLANT SCIENCE 2014; 5:295. [PMID: 25009546 PMCID: PMC4068018 DOI: 10.3389/fpls.2014.00295] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Accepted: 06/06/2014] [Indexed: 05/03/2023]
Abstract
Immune-stimulated plants are able to respond more rapidly and adequately to various biotic stresses allowing them to efficiently combat an infection. During the priming phase, plant are stimulated in absence of a challenge, and can accumulate and store conjugates or precursors of molecules as well as other compounds that play a role in defense. These molecules can be released during the defensive phase following stress. These metabolites can also participate in the first stages of the stress perception. Here, we report the metabolic changes occuring in primed plants during the priming phase. β-aminobutyric acid (BABA) causes a boost of the primary metabolism through the tricarboxylic acids (TCA) such as citrate, fumarate, (S)-malate and 2-oxoglutarate, and the potentiation of phenylpropanoid biosynthesis and the octodecanoic pathway. On the contrary, Pseudomonas syringae pv tomato (PstAvrRpt2) represses the same pathways. Both systems used to prime plants share some common signals like the changes in the synthesis of amino acids and the production of SA and its glycosides, as well as IAA. Interestingly, a product of the purine catabolism, xanthosine, was found to accumulate following both BABA- and PstAvrRpt2-treatement. The compounds that are strongly affected in this stage are called priming compounds, since their effect on the metabolism of the plant is to induce the production of primed compounds that will help to combat the stress. At the same time, additional identified metabolites suggest the possible defense pathways that plants are using to get ready for the battle.
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Affiliation(s)
- Victoria Pastor
- Institute of Biology Laboratory of Molecular and Cell Biology, University of NeuchâtelNeuchâtel, Switzerland
| | - Andrea Balmer
- Institute of Biology Laboratory of Molecular and Cell Biology, University of NeuchâtelNeuchâtel, Switzerland
| | - Jordi Gamir
- Metabolic Integration and Cell Signaling Group, Plant Physiology Section, Department of CAMN, Universitat Jaume ICastellon, Spain
| | - Victor Flors
- Metabolic Integration and Cell Signaling Group, Plant Physiology Section, Department of CAMN, Universitat Jaume ICastellon, Spain
| | - Brigitte Mauch-Mani
- Institute of Biology Laboratory of Molecular and Cell Biology, University of NeuchâtelNeuchâtel, Switzerland
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König S, Feussner K, Kaever A, Landesfeind M, Thurow C, Karlovsky P, Gatz C, Polle A, Feussner I. Soluble phenylpropanoids are involved in the defense response of Arabidopsis against Verticillium longisporum. THE NEW PHYTOLOGIST 2014; 202:823-837. [PMID: 24483326 DOI: 10.1111/nph.12709] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Accepted: 01/04/2014] [Indexed: 05/18/2023]
Abstract
Verticillium longisporum is a soil-borne vascular pathogen causing economic loss in rape. Using the model plant Arabidopsis this study analyzed metabolic changes upon fungal infection in order to identify possible defense strategies of Brassicaceae against this fungus. Metabolite fingerprinting identified infection-induced metabolites derived from the phenylpropanoid pathway. Targeted analysis confirmed the accumulation of sinapoyl glucosides, coniferin, syringin and lignans in leaves from early stages of infection on. At later stages, the amounts of amino acids increased. To test the contribution of the phenylpropanoid pathway, mutants in the pathway were analyzed. The sinapate-deficient mutant fah1-2 showed stronger infection symptoms than wild-type plants, which is most likely due to the lack of sinapoyl esters. Moreover, the coniferin accumulating transgenic plant UGT72E2-OE was less susceptible. Consistently, sinapoyl glucose, coniferyl alcohol and coniferin inhibited fungal growth and melanization in vitro, whereas sinapyl alcohol and syringin did not. The amount of lignin was not significantly altered supporting the notion that soluble derivatives of the phenylpropanoid pathway contribute to defense. These data show that soluble phenylpropanoids are important for the defense response of Arabidopsis against V. longisporum and that metabolite fingerprinting is a valuable tool to identify infection-relevant metabolic markers.
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Affiliation(s)
- Stefanie König
- Department of Plant Biochemistry, Albrecht-von-Haller-Institute for Plant Sciences, Georg-August-University, Justus-von-Liebig-Weg 11, 37077, Göttingen, Germany
| | - Kirstin Feussner
- Department of Plant Biochemistry, Albrecht-von-Haller-Institute for Plant Sciences, Georg-August-University, Justus-von-Liebig-Weg 11, 37077, Göttingen, Germany
| | - Alexander Kaever
- Department of Bioinformatics, Institute of Microbiology and Genetics, Georg-August-University, Goldschmidtstr. 1, 37077, Göttingen, Germany
| | - Manuel Landesfeind
- Department of Bioinformatics, Institute of Microbiology and Genetics, Georg-August-University, Goldschmidtstr. 1, 37077, Göttingen, Germany
| | - Corinna Thurow
- Department of Plant Molecular Biology and Physiology, Albrecht-von-Haller-Institute for Plant Sciences, Georg-August-University, Julia-Lermontowa-Weg 3, 37077, Göttingen, Germany
| | - Petr Karlovsky
- Department of Molecular Phytopathology and Mycotoxin Research, Faculty of Agricultural Sciences, Georg-August-University, Grisebachstr. 6, 37077, Göttingen, Germany
| | - Christiane Gatz
- Department of Plant Molecular Biology and Physiology, Albrecht-von-Haller-Institute for Plant Sciences, Georg-August-University, Julia-Lermontowa-Weg 3, 37077, Göttingen, Germany
| | - Andrea Polle
- Department of Forest Botany and Tree Physiology, Büsgen-Institute, Georg-August-University, Büsgenweg 2, 37077, Göttingen, Germany
| | - Ivo Feussner
- Department of Plant Biochemistry, Albrecht-von-Haller-Institute for Plant Sciences, Georg-August-University, Justus-von-Liebig-Weg 11, 37077, Göttingen, Germany
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Fornalé S, Lopez E, Salazar-Henao JE, Fernández-Nohales P, Rigau J, Caparros-Ruiz D. AtMYB7, a new player in the regulation of UV-sunscreens in Arabidopsis thaliana. PLANT & CELL PHYSIOLOGY 2014; 55:507-16. [PMID: 24319076 DOI: 10.1093/pcp/pct187] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
The phenylpropanoid metabolic pathway provides a wide variety of essential compounds for plants. Together with sinapate esters, in Brassicaceae species, flavonoids play an important role in protecting plants against UV irradiation. In this work we have characterized Arabidopsis thaliana AtMYB7, the closest homolog of AtMYB4 and AtMYB32, described as repressors of different branches of phenylpropanoid metabolism. The characterization of atmyb7 plants revealed an induction of several genes involved in flavonol biosynthesis and an increased amount of these compounds. In addition, AtMYB7 gene expression is repressed by AtMYB4. As a consequence, the atmyb4 mutant plants present a reduction of flavonol contents, indicating once more that AtMYB7 represses flavonol biosynthesis. Our results also show that AtMYB7 gene expression is induced by salt stress. Induction assays indicated that AtMYB7 represses several genes of the flavonoid pathway, DFR and UGT being early targets of this transcription factor. The results obtained indicate that AtMYB7 is a repressor of flavonol biosynthesis and also led us to propose AtMYB4 and AtMYB7 as part of the regulatory mechanism controlling the balance of the main A. thaliana UV-sunscreens.
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Affiliation(s)
- Silvia Fornalé
- Centre for Research in Agricultural Genomics (CRAG), Consorci CSIC-IRTA-UAB-UB Edifici CRAG Campus de Bellaterra de la UAB, 08193 Cerdanyola del Valles, Barcelona, Spain
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Hannoufa A, Pillai BVS, Chellamma S. Genetic enhancement of Brassica napus seed quality. Transgenic Res 2013; 23:39-52. [PMID: 23979711 DOI: 10.1007/s11248-013-9742-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Accepted: 08/17/2013] [Indexed: 11/28/2022]
Abstract
The ultimate value of the Brassica napus (canola) seed is derived from the oil fraction, which has long been recognized for its premium dietary attributes, including its low level of saturated fatty acids, high content of monounsaturated fatty acids, and favorable omega-3 fatty acid profile. However, the protein (meal) portion of the seed has also received favorable attention for its essential amino acids, including abundance of sulfur-containing amino acids, such that B. napus protein is being contemplated for large scale use in livestock and fish feed formulations. Efforts to optimize the composition of B. napus oil and protein fractions are well documented; therefore, this article will review research concerned with optimizing secondary metabolites that affect the quality of seed oil and meal, from undesirable anti-nutritional factors to highl value beneficial products. The biological, agronomic, and economic values attributed to secondary metabolites have brought much needed attention to those in Brassica oilseeds and other crops. This review focuses on increasing levels of beneficial endogenous secondary metabolites (such as carotenoids, choline and tochopherols) and decreasing undesirable antinutritional factors (glucosinolates, sinapine and phytate). Molecular genetic approaches are given emphasis relative to classical breeding.
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Affiliation(s)
- Abdelali Hannoufa
- Agriculture and Agri-Food Canada, 1391 Sandford Street, London, ON, N5V 4T3, Canada,
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Kreye O, Oelmann S, Meier MAR. Renewable Aromatic-Aliphatic Copolyesters Derived from Rapeseed. MACROMOL CHEM PHYS 2013. [DOI: 10.1002/macp.201300223] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Caldana C, Li Y, Leisse A, Zhang Y, Bartholomaeus L, Fernie AR, Willmitzer L, Giavalisco P. Systemic analysis of inducible target of rapamycin mutants reveal a general metabolic switch controlling growth in Arabidopsis thaliana. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2013; 73:897-909. [PMID: 23173928 DOI: 10.1111/tpj.12080] [Citation(s) in RCA: 157] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2012] [Revised: 11/18/2012] [Accepted: 11/20/2012] [Indexed: 05/19/2023]
Abstract
The target of rapamycin (TOR) pathway is a major regulator of growth in all eukaryotes, integrating energy, nutrient and stress signals into molecular decisions. By using large-scale MS-based metabolite profiling of primary, secondary and lipid compounds in combination with array-based transcript profiling, we show that the TOR protein not only regulates growth but also influences nutrient partitioning and central energy metabolism. The study was performed on plants exhibiting conditional down-regulation of AtTOR expression, revealing strong regulation of genes involved in pathways such as the cell cycle, cell-wall modifications and senescence, together with major changes in transcripts and metabolites of the primary and secondary metabolism. In agreement with these results, our morphological and metabolic analyses disclosed major metabolic changes leading to massive accumulations of storage lipids and starch. The implications of these data in the context of the general role of TOR in eukaryotic systems are discussed in parallel with the plant-specific aspects of TOR function. Finally, we propose a role for harnessing the plant TOR pathway by utilizing it as a potent metabolic switch, offering a possible route for biotechnological optimization of plant energy content and carbon partitioning for the production of bioenergy.
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Affiliation(s)
- Camila Caldana
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476, Potsdam, Germany.
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Zhang T, Han S, Huang J, Wang S. Combined fibroblast growth factor receptor 4 cell membrane chromatography online with high performance liquid chromatography/mass spectrometry to screen active compounds in Brassica albla. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 912:85-92. [DOI: 10.1016/j.jchromb.2012.10.029] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Revised: 10/20/2012] [Accepted: 10/24/2012] [Indexed: 02/06/2023]
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