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Terletskaya NV, Shadenova EA, Litvinenko YA, Ashimuly K, Erbay M, Mamirova A, Nazarova I, Meduntseva ND, Kudrina NO, Korbozova NK, Djangalina ED. Influence of Cold Stress on Physiological and Phytochemical Characteristics and Secondary Metabolite Accumulation in Microclones of Juglans regia L. Int J Mol Sci 2024; 25:4991. [PMID: 38732208 PMCID: PMC11084536 DOI: 10.3390/ijms25094991] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 04/28/2024] [Accepted: 04/29/2024] [Indexed: 05/13/2024] Open
Abstract
The current study investigated the impact of cold stress on the morphological, physiological, and phytochemical properties of Juglans regia L. (J. regia) using in vitro microclone cultures. The study revealed significant stress-induced changes in the production of secondary antioxidant metabolites. According to gas chromatography-mass spectrometry (GC-MS) analyses, the stress conditions profoundly altered the metabolism of J. regia microclones. Although the overall spectrum of metabolites was reduced, the production of key secondary antioxidant metabolites significantly increased. Notably, there was a sevenfold (7×) increase in juglone concentration. These findings are crucial for advancing walnut metabolomics and enhancing our understanding of plant responses to abiotic stress factors. Additionally, study results aid in identifying the role of individual metabolites in these processes, which is essential for developing strategies to improve plant resilience and tolerance to adverse conditions.
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Affiliation(s)
- Nina V. Terletskaya
- Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Al-Farabi 71, Almaty 050040, Kazakhstan; (M.E.); (A.M.); (N.O.K.); (N.K.K.)
- Institute of Genetic and Physiology, Al-Farabi 93, Almaty 050040, Kazakhstan; (E.A.S.); (Y.A.L.); (K.A.); (N.D.M.)
| | - Elvira A. Shadenova
- Institute of Genetic and Physiology, Al-Farabi 93, Almaty 050040, Kazakhstan; (E.A.S.); (Y.A.L.); (K.A.); (N.D.M.)
| | - Yuliya A. Litvinenko
- Institute of Genetic and Physiology, Al-Farabi 93, Almaty 050040, Kazakhstan; (E.A.S.); (Y.A.L.); (K.A.); (N.D.M.)
- Faculty of Chemistry, Al-Farabi Kazakh National University, Al-Farabi 71, Almaty 050040, Kazakhstan
| | - Kazhybek Ashimuly
- Institute of Genetic and Physiology, Al-Farabi 93, Almaty 050040, Kazakhstan; (E.A.S.); (Y.A.L.); (K.A.); (N.D.M.)
- Faculty of Chemistry, Al-Farabi Kazakh National University, Al-Farabi 71, Almaty 050040, Kazakhstan
| | - Malika Erbay
- Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Al-Farabi 71, Almaty 050040, Kazakhstan; (M.E.); (A.M.); (N.O.K.); (N.K.K.)
- Faculty of Chemistry, Al-Farabi Kazakh National University, Al-Farabi 71, Almaty 050040, Kazakhstan
| | - Aigerim Mamirova
- Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Al-Farabi 71, Almaty 050040, Kazakhstan; (M.E.); (A.M.); (N.O.K.); (N.K.K.)
| | - Irada Nazarova
- Institute of Genetic and Physiology, Al-Farabi 93, Almaty 050040, Kazakhstan; (E.A.S.); (Y.A.L.); (K.A.); (N.D.M.)
- Faculty of Chemistry, Al-Farabi Kazakh National University, Al-Farabi 71, Almaty 050040, Kazakhstan
| | - Nataliya D. Meduntseva
- Institute of Genetic and Physiology, Al-Farabi 93, Almaty 050040, Kazakhstan; (E.A.S.); (Y.A.L.); (K.A.); (N.D.M.)
| | - Nataliya O. Kudrina
- Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Al-Farabi 71, Almaty 050040, Kazakhstan; (M.E.); (A.M.); (N.O.K.); (N.K.K.)
- Institute of Genetic and Physiology, Al-Farabi 93, Almaty 050040, Kazakhstan; (E.A.S.); (Y.A.L.); (K.A.); (N.D.M.)
| | - Nazym K. Korbozova
- Faculty of Biology and Biotechnology, Al-Farabi Kazakh National University, Al-Farabi 71, Almaty 050040, Kazakhstan; (M.E.); (A.M.); (N.O.K.); (N.K.K.)
- Institute of Genetic and Physiology, Al-Farabi 93, Almaty 050040, Kazakhstan; (E.A.S.); (Y.A.L.); (K.A.); (N.D.M.)
| | - Erika D. Djangalina
- Institute of Genetic and Physiology, Al-Farabi 93, Almaty 050040, Kazakhstan; (E.A.S.); (Y.A.L.); (K.A.); (N.D.M.)
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Lv L, Dong C, Liu Y, Zhao A, Zhang Y, Li H, Chen X. Transcription-associated metabolomic profiling reveals the critical role of frost tolerance in wheat. BMC PLANT BIOLOGY 2022; 22:333. [PMID: 35820806 PMCID: PMC9275158 DOI: 10.1186/s12870-022-03718-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Accepted: 06/28/2022] [Indexed: 05/31/2023]
Abstract
BACKGROUND Low temperature is a crucial stress factor of wheat (Triticum aestivum L.) and adversely impacts on plant growth and grain yield. Multi-million tons of grain production are lost annually because crops lack the resistance to survive in winter. Particularlly, winter wheat yields was severely damaged under extreme cold conditions. However, studies about the transcriptional and metabolic mechanisms underlying cold stresses in wheat are limited so far. RESULTS In this study, 14,466 differentially expressed genes (DEGs) were obtained between wild-type and cold-sensitive mutants, of which 5278 DEGs were acquired after cold treatment. 88 differential accumulated metabolites (DAMs) were detected, including P-coumaroyl putrescine of alkaloids, D-proline betaine of mino acids and derivativ, Chlorogenic acid of the Phenolic acids. The comprehensive analysis of metabolomics and transcriptome showed that the cold resistance of wheat was closely related to 13 metabolites and 14 key enzymes in the flavonol biosynthesis pathway. The 7 enhanced energy metabolites and 8 up-regulation key enzymes were also compactly involved in the sucrose and amino acid biosynthesis pathway. Moreover, quantitative real-time PCR (qRT-PCR) revealed that twelve key genes were differentially expressed under cold, indicating that candidate genes POD, Tacr7, UGTs, and GSTU6 which were related to cold resistance of wheat. CONCLUSIONS In this study, we obtained the differentially expressed genes and differential accumulated metabolites in wheat under cold stress. Using the DEGs and DAMs, we plotted regulatory pathway maps of the flavonol biosynthesis pathway, sucrose and amino acid biosynthesis pathway related to cold resistance of wheat. It was found that candidate genes POD, Tacr7, UGTs and GSTU6 are related to cold resistance of wheat. This study provided valuable molecular information and new genetic engineering clues for the further study on plant resistance to cold stress.
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Affiliation(s)
- Liangjie Lv
- Institute of Cereal and Oil Crops, Hebei Academy of Agriculture and Forestry Sciences, Crop Genetics and Breeding Laboratory of Hebei, Shijiazhuang, 050000 China
| | - Ce Dong
- Handan Academy of Agricultural Sciences, Handan, 056000 Hebei China
| | - Yuping Liu
- Institute of Cereal and Oil Crops, Hebei Academy of Agriculture and Forestry Sciences, Crop Genetics and Breeding Laboratory of Hebei, Shijiazhuang, 050000 China
| | - Aiju Zhao
- Institute of Cereal and Oil Crops, Hebei Academy of Agriculture and Forestry Sciences, Crop Genetics and Breeding Laboratory of Hebei, Shijiazhuang, 050000 China
| | - Yelun Zhang
- Institute of Cereal and Oil Crops, Hebei Academy of Agriculture and Forestry Sciences, Crop Genetics and Breeding Laboratory of Hebei, Shijiazhuang, 050000 China
| | - Hui Li
- Institute of Cereal and Oil Crops, Hebei Academy of Agriculture and Forestry Sciences, Crop Genetics and Breeding Laboratory of Hebei, Shijiazhuang, 050000 China
| | - Xiyong Chen
- Institute of Cereal and Oil Crops, Hebei Academy of Agriculture and Forestry Sciences, Crop Genetics and Breeding Laboratory of Hebei, Shijiazhuang, 050000 China
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Advances in Plant Metabolomics and Its Applications in Stress and Single-Cell Biology. Int J Mol Sci 2022; 23:ijms23136985. [PMID: 35805979 PMCID: PMC9266571 DOI: 10.3390/ijms23136985] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 06/19/2022] [Accepted: 06/19/2022] [Indexed: 02/04/2023] Open
Abstract
In the past two decades, the post-genomic era envisaged high-throughput technologies, resulting in more species with available genome sequences. In-depth multi-omics approaches have evolved to integrate cellular processes at various levels into a systems biology knowledge base. Metabolomics plays a crucial role in molecular networking to bridge the gaps between genotypes and phenotypes. However, the greater complexity of metabolites with diverse chemical and physical properties has limited the advances in plant metabolomics. For several years, applications of liquid/gas chromatography (LC/GC)-mass spectrometry (MS) and nuclear magnetic resonance (NMR) have been constantly developed. Recently, ion mobility spectrometry (IMS)-MS has shown utility in resolving isomeric and isobaric metabolites. Both MS and NMR combined metabolomics significantly increased the identification and quantification of metabolites in an untargeted and targeted manner. Thus, hyphenated metabolomics tools will narrow the gap between the number of metabolite features and the identified metabolites. Metabolites change in response to environmental conditions, including biotic and abiotic stress factors. The spatial distribution of metabolites across different organs, tissues, cells and cellular compartments is a trending research area in metabolomics. Herein, we review recent technological advancements in metabolomics and their applications in understanding plant stress biology and different levels of spatial organization. In addition, we discuss the opportunities and challenges in multiple stress interactions, multi-omics, and single-cell metabolomics.
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Xu Y, Fu X. Reprogramming of Plant Central Metabolism in Response to Abiotic Stresses: A Metabolomics View. Int J Mol Sci 2022; 23:5716. [PMID: 35628526 PMCID: PMC9143615 DOI: 10.3390/ijms23105716] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 05/15/2022] [Accepted: 05/18/2022] [Indexed: 12/15/2022] Open
Abstract
Abiotic stresses rewire plant central metabolism to maintain metabolic and energy homeostasis. Metabolites involved in the plant central metabolic network serve as a hub for regulating carbon and energy metabolism under various stress conditions. In this review, we introduce recent metabolomics techniques used to investigate the dynamics of metabolic responses to abiotic stresses and analyze the trend of publications in this field. We provide an updated overview of the changing patterns in central metabolic pathways related to the metabolic responses to common stresses, including flooding, drought, cold, heat, and salinity. We extensively review the common and unique metabolic changes in central metabolism in response to major abiotic stresses. Finally, we discuss the challenges and some emerging insights in the future application of metabolomics to study plant responses to abiotic stresses.
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Affiliation(s)
- Yuan Xu
- Department of Plant Biology, Michigan State University, East Lansing, MI 48824, USA
| | - Xinyu Fu
- Plant Research Laboratory, Michigan State University, East Lansing, MI 48824, USA
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Bao Y, Yang N, Meng J, Wang D, Fu L, Wang J, Cang J. Adaptability of winter wheat Dongnongdongmai 1 (Triticum aestivum L.) to overwintering in alpine regions. PLANT BIOLOGY (STUTTGART, GERMANY) 2021; 23:445-455. [PMID: 33075203 DOI: 10.1111/plb.13200] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 10/09/2020] [Indexed: 06/11/2023]
Abstract
Long winters led to a one-crop-a-year cultivation system until the winter wheat Dongnongdongmai 1 (Dn1) was successfully cultivated in northeast China. This crop variety is resistant to extremely low temperatures (-35 °C). To better understand the adaptability of winter wheat Dn1 to low temperatures, gas chromatography time-of-flight mass spectrometry (GC-TOF/MS) and metabolomics analysis was conducted on the tillering nodes of winter wheat during the overwintering period. Enzyme-regulating genes of the metabolic products were also quantitatively analysed. The metabolomic results for the tillering nodes in the overwintering period showed that disaccharides had a strong protective effect on winter wheat Dn1. Amino acid metabolism (i.e. proline, alanine and GABA) changed significantly throughout the whole wintering process, whereas organic fatty acid metabolism changed significantly only in the late stage of overwintering. This result indicates that the metabolites used by winter wheat Dn1 differ in different overwintering stages. The relationship between field temperature and metabolite changes in winter wheat Dn1 during overwintering periods is discussed, and disaccharides were identified as the osmotic stress regulators for winter wheat Dn1 during the overwintering process, as well as maintenance of the carbon and nitrogen balance by monosaccharides, amino acids and lipids for cold resistance.
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Affiliation(s)
- Y Bao
- College of Life Science, Northeast Agricultural University, Harbin, China
| | - N Yang
- College of Life Science, Northeast Agricultural University, Harbin, China
| | - J Meng
- College of Life Science, Northeast Agricultural University, Harbin, China
| | - D Wang
- College of Life Science, Northeast Agricultural University, Harbin, China
| | - L Fu
- College of Agriculture, Northeast Agricultural University, Harbin, China
| | - J Wang
- College of Life Science, Northeast Agricultural University, Harbin, China
| | - J Cang
- College of Life Science, Northeast Agricultural University, Harbin, China
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Abstract
Metabolomics is a technology that generates large amounts of data and contributes to obtaining wide and integral explanations of the biochemical state of a living organism. Plants are continuously affected by abiotic stresses such as water scarcity, high temperatures and high salinity, and metabolomics has the potential for elucidating the response-to-stress mechanisms and develop resistance strategies in affected cultivars. This review describes the characteristics of each of the stages of metabolomic studies in plants and the role of metabolomics in the characterization of the response of various plant species to abiotic stresses.
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Yang Y, Saand MA, Huang L, Abdelaal WB, Zhang J, Wu Y, Li J, Sirohi MH, Wang F. Applications of Multi-Omics Technologies for Crop Improvement. FRONTIERS IN PLANT SCIENCE 2021; 12:563953. [PMID: 34539683 PMCID: PMC8446515 DOI: 10.3389/fpls.2021.563953] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 08/06/2021] [Indexed: 05/19/2023]
Abstract
Multiple "omics" approaches have emerged as successful technologies for plant systems over the last few decades. Advances in next-generation sequencing (NGS) have paved a way for a new generation of different omics, such as genomics, transcriptomics, and proteomics. However, metabolomics, ionomics, and phenomics have also been well-documented in crop science. Multi-omics approaches with high throughput techniques have played an important role in elucidating growth, senescence, yield, and the responses to biotic and abiotic stress in numerous crops. These omics approaches have been implemented in some important crops including wheat (Triticum aestivum L.), soybean (Glycine max), tomato (Solanum lycopersicum), barley (Hordeum vulgare L.), maize (Zea mays L.), millet (Setaria italica L.), cotton (Gossypium hirsutum L.), Medicago truncatula, and rice (Oryza sativa L.). The integration of functional genomics with other omics highlights the relationships between crop genomes and phenotypes under specific physiological and environmental conditions. The purpose of this review is to dissect the role and integration of multi-omics technologies for crop breeding science. We highlight the applications of various omics approaches, such as genomics, transcriptomics, proteomics, metabolomics, phenomics, and ionomics, and the implementation of robust methods to improve crop genetics and breeding science. Potential challenges that confront the integration of multi-omics with regard to the functional analysis of genes and their networks as well as the development of potential traits for crop improvement are discussed. The panomics platform allows for the integration of complex omics to construct models that can be used to predict complex traits. Systems biology integration with multi-omics datasets can enhance our understanding of molecular regulator networks for crop improvement. In this context, we suggest the integration of entire omics by employing the "phenotype to genotype" and "genotype to phenotype" concept. Hence, top-down (phenotype to genotype) and bottom-up (genotype to phenotype) model through integration of multi-omics with systems biology may be beneficial for crop breeding improvement under conditions of environmental stresses.
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Affiliation(s)
- Yaodong Yang
- Hainan Key Laboratory of Tropical Oil Crops Biology/Coconut Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wenchang, China
- *Correspondence: Yaodong Yang
| | - Mumtaz Ali Saand
- Hainan Key Laboratory of Tropical Oil Crops Biology/Coconut Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wenchang, China
- Department of Botany, Shah Abdul Latif University, Khairpur, Pakistan
| | - Liyun Huang
- Hainan Key Laboratory of Tropical Oil Crops Biology/Coconut Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wenchang, China
| | - Walid Badawy Abdelaal
- Hainan Key Laboratory of Tropical Oil Crops Biology/Coconut Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wenchang, China
| | - Jun Zhang
- Hainan Key Laboratory of Tropical Oil Crops Biology/Coconut Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wenchang, China
| | - Yi Wu
- Hainan Key Laboratory of Tropical Oil Crops Biology/Coconut Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wenchang, China
| | - Jing Li
- Hainan Key Laboratory of Tropical Oil Crops Biology/Coconut Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wenchang, China
| | | | - Fuyou Wang
- Hainan Key Laboratory of Tropical Oil Crops Biology/Coconut Research Institute, Chinese Academy of Tropical Agricultural Sciences, Wenchang, China
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Valentino G, Graziani V, D’Abrosca B, Pacifico S, Fiorentino A, Scognamiglio M. NMR-Based Plant Metabolomics in Nutraceutical Research: An Overview. Molecules 2020; 25:E1444. [PMID: 32210071 PMCID: PMC7145309 DOI: 10.3390/molecules25061444] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/15/2020] [Accepted: 03/20/2020] [Indexed: 12/13/2022] Open
Abstract
Few topics are able to channel the interest of researchers, the public, and industries, like nutraceuticals. The ever-increasing demand of new compounds or new sources of known active compounds, along with the need of a better knowledge about their effectiveness, mode of action, safety, etc., led to a significant effort towards the development of analytical approaches able to answer the many questions related to this topic. Therefore, the application of cutting edges approaches to this area has been observed. Among these approaches, metabolomics is a key player. Herewith, the applications of NMR-based metabolomics to nutraceutical research are discussed: after a brief overview of the analytical workflow, the use of NMR-based metabolomics to the search for new compounds or new sources of known nutraceuticals are reviewed. Then, possible applications for quality control and nutraceutical optimization are suggested. Finally, the use of NMR-based metabolomics to study the impact of nutraceuticals on human metabolism is discussed.
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Affiliation(s)
- Giovanna Valentino
- Dipartimento di Scienze e Tecnologie Ambientali Biologiche e Farmaceutiche-DiSTABiF, Università degli Studi della Campania Luigi Vanvitelli, via Vivaldi 43, I-81100 Caserta, Italy; (G.V.); (B.D.); (S.P.)
| | - Vittoria Graziani
- Department of Microbiology, Tumor and Cell Biology (MTC), Biomedicum B7, Karolinska Institutet, 17165 Stockholm, Sweden;
| | - Brigida D’Abrosca
- Dipartimento di Scienze e Tecnologie Ambientali Biologiche e Farmaceutiche-DiSTABiF, Università degli Studi della Campania Luigi Vanvitelli, via Vivaldi 43, I-81100 Caserta, Italy; (G.V.); (B.D.); (S.P.)
- Dipartimento di Biotecnologia Marina, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Naples, Italy
| | - Severina Pacifico
- Dipartimento di Scienze e Tecnologie Ambientali Biologiche e Farmaceutiche-DiSTABiF, Università degli Studi della Campania Luigi Vanvitelli, via Vivaldi 43, I-81100 Caserta, Italy; (G.V.); (B.D.); (S.P.)
| | - Antonio Fiorentino
- Dipartimento di Scienze e Tecnologie Ambientali Biologiche e Farmaceutiche-DiSTABiF, Università degli Studi della Campania Luigi Vanvitelli, via Vivaldi 43, I-81100 Caserta, Italy; (G.V.); (B.D.); (S.P.)
- Dipartimento di Biotecnologia Marina, Stazione Zoologica Anton Dohrn, Villa Comunale, 80121 Naples, Italy
| | - Monica Scognamiglio
- Dipartimento di Scienze e Tecnologie Ambientali Biologiche e Farmaceutiche-DiSTABiF, Università degli Studi della Campania Luigi Vanvitelli, via Vivaldi 43, I-81100 Caserta, Italy; (G.V.); (B.D.); (S.P.)
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Anton DB, Guzman FL, Vetö NM, Krause FA, Kulcheski FR, Coelho APD, Duarte GL, Margis R, Dillenburg LR, Turchetto-Zolet AC. Characterization and expression analysis of P5CS (Δ1-pyrroline-5-carboxylate synthase) gene in two distinct populations of the Atlantic Forest native species Eugenia uniflora L. Mol Biol Rep 2019; 47:1033-1043. [PMID: 31749121 DOI: 10.1007/s11033-019-05195-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 11/12/2019] [Indexed: 10/25/2022]
Abstract
Eugenia uniflora is an Atlantic Forest native species, occurring in contrasting edaphoclimatic environments. The identification of genes involved in response to abiotic factors is very relevant to help in understanding the processes of local adaptation. 1-Pyrroline-5-carboxylate synthetase (P5CS) is one interesting gene to study in this species since it encodes a key enzyme of proline biosynthesis, which is an osmoprotectant during abiotic stress. Applying in silico analysis, we identified one P5CS gene sequence of E. uniflora (EuniP5CS). Phylogenetic analysis, as well as, gene and protein structure investigation, revealed that EuniP5CS is a member of P5CS gene family. Plants of E. uniflora from two distinct environments (restinga and riparian forest) presented differences in the proline accumulation and P5CS expression levels under growth-controlled conditions. Both proline accumulation and gene expression level of EuniP5CS were higher in the genotypes from riparian forest than those from restinga. When these plants were submitted to drought stress, EuniP5CS gene was up-regulated in the plants from restinga, but not in those from riparian forest. These results demonstrated that EuniP5CS is involved in proline biosynthesis in this species and suggest that P5CS gene may be an interesting candidate gene in future studies to understand the processes of local adaptation in E. uniflora.
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Affiliation(s)
- Débora Bublitz Anton
- Programa de Pós-Graduação em Genética e Biologia Molecular (PPGBM) Departamento de Genética, Instituto de Biociências, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves 9500, Prédio 43312, Porto Alegre, 91501-970, Brazil.,Graduação em Biotecnologia, Departamento de Biologia Molecular e Biotecnologia, Instituto de Biociências, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Frank Lino Guzman
- Centro de Biotecnologia e Programa de Pós-Graduação em Biologia Celular e Molecular, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Nicole Moreira Vetö
- Programa de Pós-Graduação em Genética e Biologia Molecular (PPGBM) Departamento de Genética, Instituto de Biociências, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves 9500, Prédio 43312, Porto Alegre, 91501-970, Brazil
| | - Felipe Augusto Krause
- Graduação em Agronomia, Faculdade de Agronomia, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Franceli Rodrigues Kulcheski
- Programa de Pós-Graduação em Biologia Celular e do Desenvolvimento (PPGBCD) Departamento de Biologia Celular, Embriologia e Genética, Universidade Federal de Santa Catarina (UFSC), Porto Alegre, Brazil
| | - Ana Paula Durand Coelho
- Centro de Biotecnologia e Programa de Pós-Graduação em Biologia Celular e Molecular, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Guilherme Leitão Duarte
- Centro de Biotecnologia e Programa de Pós-Graduação em Biologia Celular e Molecular, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Rogério Margis
- Programa de Pós-Graduação em Genética e Biologia Molecular (PPGBM) Departamento de Genética, Instituto de Biociências, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves 9500, Prédio 43312, Porto Alegre, 91501-970, Brazil.,Centro de Biotecnologia e Programa de Pós-Graduação em Biologia Celular e Molecular, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil.,Departamento de Biofísica, Instituto de Biociências, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Lúcia Rebello Dillenburg
- Laboratório de Ecofisiologia Vegetal, Departamento de Botânica, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
| | - Andreia Carina Turchetto-Zolet
- Programa de Pós-Graduação em Genética e Biologia Molecular (PPGBM) Departamento de Genética, Instituto de Biociências, Universidade Federal do Rio Grande do Sul (UFRGS), Av. Bento Gonçalves 9500, Prédio 43312, Porto Alegre, 91501-970, Brazil.
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Broholm SL, Gramsbergen SM, Nyberg NT, Jäger AK, Staerk D. Potential of Sorbus berry extracts for management of type 2 diabetes: Metabolomics investigation of 1H NMR spectra, α-amylase and α-glucosidase inhibitory activities, and in vivo anti-hyperglycaemic activity of S. norvegica. JOURNAL OF ETHNOPHARMACOLOGY 2019; 242:112061. [PMID: 31283956 DOI: 10.1016/j.jep.2019.112061] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 06/18/2019] [Accepted: 07/04/2019] [Indexed: 06/09/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Berries of Sorbus species have been used to treat type 2 diabetes in many regions in Europe. AIMS OF THE STUDY To investigate the inhibitory activity of berry extract of Sorbus on the digestive enzymes α-amylase and α-glucosidase, two important targets for management of blood glucose for type 2 diabetics. Furthermore, to test the anti-hyperglycaemic potential of S. norvegica berry extract in vivo. MATERIALS AND METHODS 70% acetone berry extracts of 16 Sorbus species were tested in vitro for inhibition of α-amylase and α-glucosidase. Single berry extracts were analysed by 1H-NMR spectroscopy and principal component analysis to evaluate the chemical profiles of the extracts. The anti-hyperglycaemic effect was evaluated in an oral starch tolerance test in STZ-treated C57BL/6 mice. RESULTS The lowest IC50 values against α-amylase and α-glucosidase were obtained with the Sorbus species belonging to the subspecies Aria, which have simple leaves compared to pinnately compound leaves of the other Sorbus species. Species belonging to subspecies Aria grouped together and away from the other Sorbus species in the score plot, indicating a difference in chemistry. Both the carbohydrate- and polyphenol-fraction contributed to the enzyme inhibition. Extract of the most active species, S. norvegica, had anti-hyperglycaemic activity, at a level 36 times lower than clinically used acarbose, corresponding to a needed daily dose of 900 mg extract. CONCLUSIONS Sorbus species of subspecies Aria have the potential to be used for management of type 2 diabetes.
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Affiliation(s)
- Sofie L Broholm
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark.
| | - Simone M Gramsbergen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark.
| | - Nils T Nyberg
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark.
| | - Anna K Jäger
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark.
| | - Dan Staerk
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Denmark.
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Ghatak A, Chaturvedi P, Weckwerth W. Metabolomics in Plant Stress Physiology. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2019; 164:187-236. [PMID: 29470599 DOI: 10.1007/10_2017_55] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Metabolomics is an essential technology for functional genomics and systems biology. It plays a key role in functional annotation of genes and understanding towards cellular and molecular, biotic and abiotic stress responses. Different analytical techniques are used to extend the coverage of a full metabolome. The commonly used techniques are NMR, CE-MS, LC-MS, and GC-MS. The choice of a suitable technique depends on the speed, sensitivity, and accuracy. This chapter provides insight into plant metabolomic techniques, databases used in the analysis, data mining and processing, compound identification, and limitations in metabolomics. It also describes the workflow of measuring metabolites in plants. Metabolomic studies in plant responses to stress are a key research topic in many laboratories worldwide. We summarize different approaches and provide a generic overview of stress responsive metabolite markers and processes compiled from a broad range of different studies. Graphical Abstract.
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Affiliation(s)
- Arindam Ghatak
- Department of Ecogenomics and Systems Biology, Faculty of Sciences, University of Vienna, Vienna, Austria
| | - Palak Chaturvedi
- Department of Ecogenomics and Systems Biology, Faculty of Sciences, University of Vienna, Vienna, Austria
| | - Wolfram Weckwerth
- Department of Ecogenomics and Systems Biology, Faculty of Sciences, University of Vienna, Vienna, Austria. .,Vienna Metabolomics Center (VIME), University of Vienna, Althanstrasse 14, 1090, Vienna, Austria.
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Deborde C, Fontaine JX, Jacob D, Botana A, Nicaise V, Richard-Forget F, Lecomte S, Decourtil C, Hamade K, Mesnard F, Moing A, Molinié R. Optimizing 1D 1H-NMR profiling of plant samples for high throughput analysis: extract preparation, standardization, automation and spectra processing. Metabolomics 2019; 15:28. [PMID: 30830443 PMCID: PMC6394467 DOI: 10.1007/s11306-019-1488-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 02/07/2019] [Indexed: 12/27/2022]
Abstract
INTRODUCTION Proton nuclear magnetic resonance spectroscopy (1H-NMR)-based metabolomic profiling has a range of applications in plant sciences. OBJECTIVES The aim of the present work is to provide advice for minimizing uncontrolled variability in plant sample preparation before and during NMR metabolomic profiling, taking into account sample composition, including its specificity in terms of pH and paramagnetic ion concentrations, and NMR spectrometer performances. METHODS An automation of spectrometer preparation routine standardization before NMR acquisition campaign was implemented and tested on three plant sample sets (extracts of durum wheat spikelet, Arabidopsis leaf and root, and flax leaf, root and stem). We performed 1H-NMR spectroscopy in three different sites on the wheat sample set utilizing instruments from two manufacturers with different probes and magnetic field strengths. The three collections of spectra were processed separately with the NMRProcFlow web tool using intelligent bucketing, and the resulting buckets were subjected to multivariate analysis. RESULTS Comparability of large- (Arabidopsis) and medium-size (flax) datasets measured at 600 MHz and from the wheat sample set recorded at the three sites (400, 500 and 600 MHz) was exceptionally good in terms of spectral quality. The coefficient of variation of the full width at half maximum (FWHM) and the signal-to-noise ratio (S/N) of two selected peaks was comprised between 5 and 10% depending on the size of sample set and the spectrometer field. EDTA addition improved citrate and malate resonance patterns for wheat sample sets. A collection of 22 samples of wheat spikelet extracts was used as a proof of concept and showed that the data collected at the three sites on instruments of different field strengths and manufacturers yielded the same discrimination pattern of the biological groups. CONCLUSION Standardization or automation of several steps from extract preparation to data reduction improves data quality for small to large collections of plant samples of different origins.
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Affiliation(s)
- Catherine Deborde
- UMR1332 Biologie du Fruit et Pathologie, Centre INRA de Nouvelle Aquitaine Bordeaux, INRA, Univ. Bordeaux, av Edouard Bourlaux, 33140 Villenave d’Ornon, France
- Plateforme Métabolome du Centre de Génomique Fonctionnelle Bordeaux, MetaboHUB, IBVM, Centre INRA de Nouvelle Aquitaine Bordeaux, av Edouard Bourlaux, 33140 Villenave d’Ornon, France
| | - Jean-Xavier Fontaine
- BIOPI - EA 3900, Univ. Picardie Jules Verne, 1, rue des Louvels, 80037 Amiens Cedex, France
| | - Daniel Jacob
- UMR1332 Biologie du Fruit et Pathologie, Centre INRA de Nouvelle Aquitaine Bordeaux, INRA, Univ. Bordeaux, av Edouard Bourlaux, 33140 Villenave d’Ornon, France
- Plateforme Métabolome du Centre de Génomique Fonctionnelle Bordeaux, MetaboHUB, IBVM, Centre INRA de Nouvelle Aquitaine Bordeaux, av Edouard Bourlaux, 33140 Villenave d’Ornon, France
| | - Adolfo Botana
- JEOL UK, Silver Court, Watchmead Road, Welwyn Garden City, AL7 1LT UK
| | - Valérie Nicaise
- UR1264 MycSA, INRA, Centre INRA de Nouvelle Aquitaine Bordeaux, av Edouard Bourlaux, 33140 Villenave d’Ornon, France
| | - Florence Richard-Forget
- UR1264 MycSA, INRA, Centre INRA de Nouvelle Aquitaine Bordeaux, av Edouard Bourlaux, 33140 Villenave d’Ornon, France
| | - Sylvain Lecomte
- BIOPI - EA 3900, Univ. Picardie Jules Verne, 1, rue des Louvels, 80037 Amiens Cedex, France
| | - Cédric Decourtil
- BIOPI - EA 3900, Univ. Picardie Jules Verne, 1, rue des Louvels, 80037 Amiens Cedex, France
| | - Kamar Hamade
- BIOPI - EA 3900, Univ. Picardie Jules Verne, 1, rue des Louvels, 80037 Amiens Cedex, France
| | - François Mesnard
- BIOPI - EA 3900, Univ. Picardie Jules Verne, 1, rue des Louvels, 80037 Amiens Cedex, France
| | - Annick Moing
- UMR1332 Biologie du Fruit et Pathologie, Centre INRA de Nouvelle Aquitaine Bordeaux, INRA, Univ. Bordeaux, av Edouard Bourlaux, 33140 Villenave d’Ornon, France
- Plateforme Métabolome du Centre de Génomique Fonctionnelle Bordeaux, MetaboHUB, IBVM, Centre INRA de Nouvelle Aquitaine Bordeaux, av Edouard Bourlaux, 33140 Villenave d’Ornon, France
| | - Roland Molinié
- BIOPI - EA 3900, Univ. Picardie Jules Verne, 1, rue des Louvels, 80037 Amiens Cedex, France
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Di Silvestre D, Bergamaschi A, Bellini E, Mauri P. Large Scale Proteomic Data and Network-Based Systems Biology Approaches to Explore the Plant World. Proteomes 2018; 6:proteomes6020027. [PMID: 29865292 PMCID: PMC6027444 DOI: 10.3390/proteomes6020027] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 05/30/2018] [Accepted: 06/01/2018] [Indexed: 12/26/2022] Open
Abstract
The investigation of plant organisms by means of data-derived systems biology approaches based on network modeling is mainly characterized by genomic data, while the potential of proteomics is largely unexplored. This delay is mainly caused by the paucity of plant genomic/proteomic sequences and annotations which are fundamental to perform mass-spectrometry (MS) data interpretation. However, Next Generation Sequencing (NGS) techniques are contributing to filling this gap and an increasing number of studies are focusing on plant proteome profiling and protein-protein interactions (PPIs) identification. Interesting results were obtained by evaluating the topology of PPI networks in the context of organ-associated biological processes as well as plant-pathogen relationships. These examples foreshadow well the benefits that these approaches may provide to plant research. Thus, in addition to providing an overview of the main-omic technologies recently used on plant organisms, we will focus on studies that rely on concepts of module, hub and shortest path, and how they can contribute to the plant discovery processes. In this scenario, we will also consider gene co-expression networks, and some examples of integration with metabolomic data and genome-wide association studies (GWAS) to select candidate genes will be mentioned.
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Affiliation(s)
- Dario Di Silvestre
- Institute for Biomedical Technologies-National Research Council; F.lli Cervi 93, 20090 Segrate, Milan, Italy.
| | - Andrea Bergamaschi
- Institute for Biomedical Technologies-National Research Council; F.lli Cervi 93, 20090 Segrate, Milan, Italy.
| | - Edoardo Bellini
- Institute for Biomedical Technologies-National Research Council; F.lli Cervi 93, 20090 Segrate, Milan, Italy.
| | - PierLuigi Mauri
- Institute for Biomedical Technologies-National Research Council; F.lli Cervi 93, 20090 Segrate, Milan, Italy.
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Ban Q, Wang X, Pan C, Wang Y, Kong L, Jiang H, Xu Y, Wang W, Pan Y, Li Y, Jiang C. Comparative analysis of the response and gene regulation in cold resistant and susceptible tea plants. PLoS One 2017; 12:e0188514. [PMID: 29211766 PMCID: PMC5718485 DOI: 10.1371/journal.pone.0188514] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Accepted: 11/08/2017] [Indexed: 12/04/2022] Open
Abstract
Cold environment is the main constraint for tea plants (Camellia sinensis) distribution and tea farming. We identified two tea cultivars, called var. sinensis cv. Shuchazao (SCZ) with a high cold-tolerance and var. assamica cv. Yinghong9 (YH9) with low cold-tolerance. To better understand the response mechanism of tea plants under cold stress for improving breeding, we compared physiological and biochemical responses, and associated genes expression in response to 7-day and 14-day cold acclimation, followed by 7-day de-acclimation in these two tea cultivars. We found that the low EL50, low Fv/Fm, and high sucrose and raffinose accumulation are responsible for higher cold tolerance in SCZ comparing with YH9. We then measured the expression of 14 key homologous genes, known as involved in these responses in other plants, for each stages of treatment in both cultivars using RT-qPCR. Our results suggested that the increased expression of CsCBF1 and CsDHNs coupling with the accumulation of sucrose play key roles in conferring higher cold resistance in SCZ. Our findings have revealed key genes regulation responsible for cold resistance, which help to understand the cold-resistant mechanisms and guide breeding in tea plants.
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Affiliation(s)
- Qiuyan Ban
- State Key Laboratory of Tea Plant Biology and Utilization/key Laboratory of Tea Biology and Processing, Ministry of Agriculture, Anhui Agricultural University, Hefei City, Anhui Province, PR China
| | - Xuewen Wang
- State Key Laboratory of Tea Plant Biology and Utilization/key Laboratory of Tea Biology and Processing, Ministry of Agriculture, Anhui Agricultural University, Hefei City, Anhui Province, PR China.,Department of Genetics, University of Georgia, Athens, Georgia, United States of America
| | - Cheng Pan
- State Key Laboratory of Tea Plant Biology and Utilization/key Laboratory of Tea Biology and Processing, Ministry of Agriculture, Anhui Agricultural University, Hefei City, Anhui Province, PR China
| | - Yiwei Wang
- State Key Laboratory of Tea Plant Biology and Utilization/key Laboratory of Tea Biology and Processing, Ministry of Agriculture, Anhui Agricultural University, Hefei City, Anhui Province, PR China
| | - Lei Kong
- State Key Laboratory of Tea Plant Biology and Utilization/key Laboratory of Tea Biology and Processing, Ministry of Agriculture, Anhui Agricultural University, Hefei City, Anhui Province, PR China
| | - Huiguang Jiang
- State Key Laboratory of Tea Plant Biology and Utilization/key Laboratory of Tea Biology and Processing, Ministry of Agriculture, Anhui Agricultural University, Hefei City, Anhui Province, PR China
| | - Yiqun Xu
- State Key Laboratory of Tea Plant Biology and Utilization/key Laboratory of Tea Biology and Processing, Ministry of Agriculture, Anhui Agricultural University, Hefei City, Anhui Province, PR China
| | - Wenzhi Wang
- State Key Laboratory of Tea Plant Biology and Utilization/key Laboratory of Tea Biology and Processing, Ministry of Agriculture, Anhui Agricultural University, Hefei City, Anhui Province, PR China
| | - Yuting Pan
- State Key Laboratory of Tea Plant Biology and Utilization/key Laboratory of Tea Biology and Processing, Ministry of Agriculture, Anhui Agricultural University, Hefei City, Anhui Province, PR China
| | - Yeyun Li
- State Key Laboratory of Tea Plant Biology and Utilization/key Laboratory of Tea Biology and Processing, Ministry of Agriculture, Anhui Agricultural University, Hefei City, Anhui Province, PR China
| | - Changjun Jiang
- State Key Laboratory of Tea Plant Biology and Utilization/key Laboratory of Tea Biology and Processing, Ministry of Agriculture, Anhui Agricultural University, Hefei City, Anhui Province, PR China.,Henan Provincial Key Laboratory of Tea Plant Biology, Xinyang Normal University, Xinyang, Henan Province, PR China
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Deborde C, Moing A, Roch L, Jacob D, Rolin D, Giraudeau P. Plant metabolism as studied by NMR spectroscopy. PROGRESS IN NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY 2017; 102-103:61-97. [PMID: 29157494 DOI: 10.1016/j.pnmrs.2017.05.001] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Revised: 05/19/2017] [Accepted: 05/22/2017] [Indexed: 05/07/2023]
Abstract
The study of plant metabolism impacts a broad range of domains such as plant cultural practices, plant breeding, human or animal nutrition, phytochemistry and green biotechnologies. Plant metabolites are extremely diverse in terms of structure or compound families as well as concentrations. This review attempts to illustrate how NMR spectroscopy, with its broad variety of experimental approaches, has contributed widely to the study of plant primary or specialized metabolism in very diverse ways. The review presents recent developments of one-dimensional and multi-dimensional NMR methods to study various aspects of plant metabolism. Through recent examples, it highlights how NMR has proved to be an invaluable tool for the global characterization of sample composition within metabolomic studies, and shows some examples of use for targeted phytochemistry, with a special focus on compound identification and quantitation. In such cases, NMR approaches are often used to provide snapshots of the plant sample composition. The review also covers dynamic aspects of metabolism, with a description of NMR techniques to measure metabolic fluxes - in most cases after stable isotope labelling. It is mainly intended for NMR specialists who would be interested to learn more about the potential of their favourite technique in plant sciences and about specific details of NMR approaches in this field. Therefore, as a practical guide, a paragraph on the specific precautions that should be taken for sample preparation is also included. In addition, since the quality of NMR metabolic studies is highly dependent on approaches to data processing and data sharing, a specific part is dedicated to these aspects. The review concludes with perspectives on the emerging methods that could change significantly the role of NMR in the field of plant metabolism by boosting its sensitivity. The review is illustrated throughout with examples of studies selected to represent diverse applications of liquid-state or HR-MAS NMR.
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Affiliation(s)
- Catherine Deborde
- INRA, UMR 1332 Biologie du Fruit et Pathologie, Centre INRA Bordeaux, F-33140 Villenave d'Ornon, France; Plateforme Métabolome Bordeaux - MetaboHUB, Centre de Génomique Fonctionnelle Bordeaux, IBVM, Centre INRA Bordeaux, F-33140 Villenave d'Ornon, France
| | - Annick Moing
- INRA, UMR 1332 Biologie du Fruit et Pathologie, Centre INRA Bordeaux, F-33140 Villenave d'Ornon, France; Plateforme Métabolome Bordeaux - MetaboHUB, Centre de Génomique Fonctionnelle Bordeaux, IBVM, Centre INRA Bordeaux, F-33140 Villenave d'Ornon, France
| | - Léa Roch
- INRA, UMR 1332 Biologie du Fruit et Pathologie, Centre INRA Bordeaux, F-33140 Villenave d'Ornon, France; Plateforme Métabolome Bordeaux - MetaboHUB, Centre de Génomique Fonctionnelle Bordeaux, IBVM, Centre INRA Bordeaux, F-33140 Villenave d'Ornon, France
| | - Daniel Jacob
- INRA, UMR 1332 Biologie du Fruit et Pathologie, Centre INRA Bordeaux, F-33140 Villenave d'Ornon, France; Plateforme Métabolome Bordeaux - MetaboHUB, Centre de Génomique Fonctionnelle Bordeaux, IBVM, Centre INRA Bordeaux, F-33140 Villenave d'Ornon, France
| | - Dominique Rolin
- Plateforme Métabolome Bordeaux - MetaboHUB, Centre de Génomique Fonctionnelle Bordeaux, IBVM, Centre INRA Bordeaux, F-33140 Villenave d'Ornon, France; Univ. Bordeaux, UMR1332, Biologie du Fruit et Pathologie, 71 av Edouard Bourlaux, 33140 Villenave d'Ornon, France
| | - Patrick Giraudeau
- Chimie et Interdisciplinarité: Synthèse, Analyse, Modélisation (CEISAM), UMR 6230, CNRS, Université de Nantes, Faculté des Sciences, BP 92208, 2 rue de la Houssinière, F-44322 Nantes Cedex 03, France; Institut Universitaire de France, 1 rue Descartes, 75005 Paris, France.
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