1
|
Olmedo P, Vidal J, Ponce E, Defilippi BG, Pérez-Donoso AG, Meneses C, Carpentier S, Pedreschi R, Campos-Vargas R. Proteomic and Low-Polar Metabolite Profiling Reveal Unique Dynamics in Fatty Acid Metabolism during Flower and Berry Development of Table Grapes. Int J Mol Sci 2023; 24:15360. [PMID: 37895040 PMCID: PMC10607693 DOI: 10.3390/ijms242015360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 10/05/2023] [Accepted: 10/07/2023] [Indexed: 10/29/2023] Open
Abstract
Grapevine development and ripening are complex processes that involve several biochemical pathways, including fatty acid and lipid metabolism. Fatty acids are essential components of lipids, which play crucial roles in fruit maturation and flavor development. However, the dynamics of fatty acid metabolism in grape flowers and berries are poorly understood. In this study, we present those dynamics and investigate the mechanisms of fatty acid homeostasis on 'Thompson Seedless' berries using metabolomic and proteomic analyses. Low-polar metabolite profiling indicated a higher abundance of fatty acids at the pre-flowering and pre-veraison stages. Proteomic analyses revealed that grape flowers and berries display unique profiles of proteins involved in fatty acid biosynthesis, triacylglycerol assembly, fatty acid β-oxidation, and lipid signaling. These findings show, for the first time, that fatty acid metabolism also plays an important role in the development of non-oil-rich tissues, opening new perspectives about lipid function and its relation to berry quality.
Collapse
Affiliation(s)
- Patricio Olmedo
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Quillota 2260000, Chile; (P.O.); (J.V.); (E.P.)
| | - Juan Vidal
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Quillota 2260000, Chile; (P.O.); (J.V.); (E.P.)
| | - Excequel Ponce
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Quillota 2260000, Chile; (P.O.); (J.V.); (E.P.)
| | - Bruno G. Defilippi
- Unidad de Postcosecha, Instituto de Investigaciones Agropecuarias (INIA) La Platina, Santiago 8831314, Chile;
| | - Alonso G. Pérez-Donoso
- Departamento de Fruticultura y Enología, Facultad de Agronomía y Sistemas Naturales, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile; (A.G.P.-D.); (C.M.)
| | - Claudio Meneses
- Departamento de Fruticultura y Enología, Facultad de Agronomía y Sistemas Naturales, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile; (A.G.P.-D.); (C.M.)
- Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago 8331150, Chile
- Millennium Nucleus for the Development of Super Adaptable Plants (MN-SAP), Santiago 8370186, Chile
- Millennium Institute Center for Genome Regulation (CRG), Santiago 7800003, Chile
| | - Sebastien Carpentier
- Facility for Systems Biology Based Mass Spectrometry SYBIOMA, KU Leuven, B-3000 Leuven, Belgium;
- Bioversity International, Biodiversity for Food & Agriculture, B-3001 Leuven, Belgium
| | - Romina Pedreschi
- Escuela de Agronomía, Facultad de Ciencias Agronómicas y de los Alimentos, Pontificia Universidad Católica de Valparaíso, Quillota 2260000, Chile; (P.O.); (J.V.); (E.P.)
- Millennium Institute Center for Genome Regulation (CRG), Santiago 7800003, Chile
| | - Reinaldo Campos-Vargas
- Centro de Estudios Postcosecha, Facultad de Ciencias Agronómicas, Universidad de Chile, Santiago 8831314, Chile;
| |
Collapse
|
2
|
Koteska D, Marter P, Huang S, Pradella S, Petersen J, Schulz S. Volatiles of the Apicomplexan Alga Chromera velia and Associated Bacteria. Chembiochem 2023; 24:e202200530. [PMID: 36416092 PMCID: PMC10107727 DOI: 10.1002/cbic.202200530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 11/18/2022] [Accepted: 11/21/2022] [Indexed: 11/24/2022]
Abstract
Volatiles released by the apicomplexan alga Chromera velia CCAP1602/1 and their associated bacteria have been investigated. A metagenome analysis allowed the identification of the most abundant heterotrophic bacteria of the phycosphere, but the isolation of additional strains showed that metagenomics underestimated the complexity of the algal microbiome, However, a culture-independent approach revealed the presence of a planctomycete that likely represents a novel bacterial family. We analysed algal and bacterial volatiles by open-system-stripping analysis (OSSA) on Tenax TA desorption tubes, followed by thermodesorption, cryofocusing and GC-MS-analysis. The analyses of the alga and the abundant bacterial strains Sphingopyxis litoris A01A-101, Algihabitans albus A01A-324, "Coraliitalea coralii" A01A-333 and Litoreibacter sp. A01A-347 revealed sulfur- and nitrogen-containing compounds, ketones, alcohols, aldehydes, aromatic compounds, amides and one lactone, as well as the typical algal products, apocarotenoids. The compounds were identified by gas chromatographic retention indices, comparison of mass spectra and syntheses of reference compounds. A major algal metabolite was 3,4,4-trimethylcyclopent-2-en-1-one, an apocarotenoid indicating the presence of carotenoids related to capsanthin, not reported from algae so far. A low overlap in volatiles bouquets between C. velia and the bacteria was found, and the xenic algal culture almost exclusively released algal components.
Collapse
Affiliation(s)
- Diana Koteska
- Institut für Organische ChemieTechnische Universität BraunschweigHagenring 3038106BraunschweigGermany
| | - Pia Marter
- Leibniz-Institut DSMZ-Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbHInhoffenstraße 7B38124BraunschweigGermany
| | - Sixing Huang
- Leibniz-Institut DSMZ-Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbHInhoffenstraße 7B38124BraunschweigGermany
| | - Silke Pradella
- Leibniz-Institut DSMZ-Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbHInhoffenstraße 7B38124BraunschweigGermany
| | - Jörn Petersen
- Leibniz-Institut DSMZ-Deutsche Sammlung von Mikroorganismen und Zellkulturen GmbHInhoffenstraße 7B38124BraunschweigGermany
| | - Stefan Schulz
- Institut für Organische ChemieTechnische Universität BraunschweigHagenring 3038106BraunschweigGermany
| |
Collapse
|
3
|
Identification of Volatiles of the Dinoflagellate Prorocentrum cordatum. Mar Drugs 2022; 20:md20060371. [PMID: 35736174 PMCID: PMC9230497 DOI: 10.3390/md20060371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 05/17/2022] [Accepted: 05/25/2022] [Indexed: 11/21/2022] Open
Abstract
The dinoflagellate Prorocentrum cordatum, often called P. minimum, is a potentially toxic alga found in algal blooms. Volatile compounds released by the alga might carry important information, e.g., on its physiological state, and may act as chemical messengers. We report here the identification of volatile organic compounds emitted by two strains, xenic P. cordatum CCMP 1529 and axenic P. cordatum CCMP 1329. The volatiles released during culture were identified despite their low production rates, using sensitive methods such as open-system-stripping analysis (OSSA) on Tenax TA desorption tubes, thermodesorption, cryofocusing and GC/MS-analysis. The analyses revealed 16 compounds released from the xenic strain and 52 compounds from the axenic strain. The majority of compounds were apocarotenoids, aromatic compounds and small oxylipins, but new natural products such as 3,7-dimethyl-4-octanolide were also identified and synthesized. The large difference of compound composition between xenic and axenic algae will be discussed.
Collapse
|
4
|
Singh A, Singh S, Singh R, Kumar S, Singh SK, Singh IK. Dynamics of Zea mays transcriptome in response to a polyphagous herbivore, Spodoptera litura. Funct Integr Genomics 2021; 21:571-592. [PMID: 34415472 DOI: 10.1007/s10142-021-00796-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 06/17/2021] [Accepted: 07/02/2021] [Indexed: 12/01/2022]
Abstract
Zea mays defense response is well-crafted according to the physical and chemical weapons utilized by their invaders during the coevolutionary period. Maize plants employ diversified defense strategies and alter the spatiotemporal distribution of several classes of defensive compounds to affect insect herbivore performance. However, only little knowledge is available about the defense orchestration of maize in response to Spodoptera litura, a voracious Noctuidae pest. In order to decipher the defense status of Zea mays (African tall variety) against S. litura, a comparative feeding bioassay was executed, which revealed reduced performance of the herbivore on maize. In order to understand the molecular mechanism behind maize tolerance against S. litura, a microarray-based genome-wide expression analysis was performed. The comparative analysis displayed 792 differentially expressed genes (DEGs), wherein 357 genes were upregulated and 435 genes were downregulated at fold change ≥ 2 and p value ≤ 0.05. The upregulated genes were identified and categorized as defense-related, oxidative stress-related, transcription regulatory genes, protein synthesis genes, phytohormone-related, and primary and secondary metabolism-related. In contrast, downregulated genes were mainly associated with plant growth and development, indicating a balance of growth and defense response and utilization of a highly evolved C-diversion response were noticed. Maize plants showed better tolerance against herbivory and maintained its fitness using a combinatorial strategy. This peculiar response of Zea mays against S. litura offers an excellent possibility of managing polyphagous pests by spicing up the plant's defensive response with tolerance mechanism.
Collapse
Affiliation(s)
- Archana Singh
- Department of Botany, Hansraj College, University of Delhi, Delhi-110007, India.
| | - Sujata Singh
- Molecular Biology Research Lab, Department of Zoology, Deshbandhu College, University of Delhi, Kalkaji, Delhi-110019, India
| | - Ragini Singh
- Department of Botany, Hansraj College, University of Delhi, Delhi-110007, India
| | - Sumit Kumar
- Molecular Biology Research Lab, Department of Zoology, Deshbandhu College, University of Delhi, Kalkaji, Delhi-110019, India
| | - Sanjay Kumar Singh
- Kentucky Tobacco Research and Development Center, University of Kentucky, Lexington, KY, 40546, USA
| | - Indrakant Kumar Singh
- Molecular Biology Research Lab, Department of Zoology, Deshbandhu College, University of Delhi, Kalkaji, Delhi-110019, India. .,DBC i4 Centre, Deshbandhu College, University of Delhi, Kalkaji, Delhi-110019, India.
| |
Collapse
|
5
|
Fatty Acid Composition by Total Acyl Lipid Collision-Induced Dissociation Time-of-Flight (TAL-CID-TOF) Mass Spectrometry. Methods Mol Biol 2021. [PMID: 34047975 DOI: 10.1007/978-1-0716-1362-7_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Total acyl lipid collision-induced dissociation time-of-flight (TAL-CID-TOF) mass spectrometry uses a quadrupole time-of-flight (QTOF) mass spectrometer to rapidly provide a comprehensive fatty acid composition of a biological lipid extract. Samples are infused into a QTOF instrument, operated in negative mode, and the quadrupole is used to transfer all, or a wide mass range of, precursor ions to the collision cell for fragmentation. Time-of-flight-acquired mass spectra provide mass accuracy and resolution sufficient for chemical formula determination of fatty acids in the complex mixture. Considering the limited number of reasonable CHO variants in fatty acids, one can discern acyl anions with the same nominal mass but different chemical formulas. An online application, LipidomeDB Data Calculation Environment, is employed to process the mass spectral output data and match identified fragments to target fragments at a resolution specified by the user. TAL-CID-TOF methodology is a useful discovery or screening tool to identify and compare fatty acid profiles of biological samples.
Collapse
|
6
|
Xiang Q, Lott AA, Assmann SM, Chen S. Advances and perspectives in the metabolomics of stomatal movement and the disease triangle. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2021; 302:110697. [PMID: 33288010 DOI: 10.1016/j.plantsci.2020.110697] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 09/26/2020] [Accepted: 09/28/2020] [Indexed: 05/20/2023]
Abstract
Crops are continuously exposed to microbial pathogens that cause tremendous yield losses worldwide. Stomatal pores formed by pairs of specialized guard cells in the leaf epidermis represent a major route of pathogen entry. Guard cells have an essential role as a first line of defense against pathogens. Metabolomics is an indispensable systems biology tool that has facilitated discovery and functional studies of metabolites that regulate stomatal movement in response to pathogens and other environmental factors. Guard cells, pathogens and environmental factors constitute the "stomatal disease triangle". The aim of this review is to highlight recent advances toward understanding the stomatal disease triangle in the context of newly discovered signaling molecules, hormone crosstalk, and consequent molecular changes that integrate pathogens and environmental sensing into stomatal immune responses. Future perspectives on emerging single-cell studies, multiomics and molecular imaging in the context of stomatal defense are discussed. Advances in this important area of plant biology will inform rational crop engineering and breeding for enhanced stomatal defense without disruption of other pathways that impact crop yield.
Collapse
Affiliation(s)
- Qingyuan Xiang
- Department of Biology, University of Florida Genetics Institute, Gainesville, FL, USA
| | - Aneirin A Lott
- Department of Biology, University of Florida Genetics Institute, Gainesville, FL, USA; Plant Molecular and Cellular Biology Program, University of Florida, FL, USA
| | - Sarah M Assmann
- Department of Biology, Pennsylvania State University, State College, PA, USA
| | - Sixue Chen
- Department of Biology, University of Florida Genetics Institute, Gainesville, FL, USA; Plant Molecular and Cellular Biology Program, University of Florida, FL, USA; Proteomics and Mass Spectrometry Facility, University of Florida, FL, USA.
| |
Collapse
|
7
|
Wang Y, Liu M, Ge D, Akhter Bhat J, Li Y, Kong J, Liu K, Zhao T. Hydroperoxide lyase modulates defense response and confers lesion-mimic leaf phenotype in soybean (Glycine max (L.) Merr.). THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2020; 104:1315-1333. [PMID: 32996255 DOI: 10.1111/tpj.15002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 09/16/2020] [Accepted: 09/18/2020] [Indexed: 05/20/2023]
Abstract
Allene oxide synthase (AOS) and hydroperoxide lyase (HPL) are two important members of P450 enzymes metabolizing hydroperoxy fatty acid to produce jasmonates and aldehydes respectively, which function in response to diverse environmental and developmental stimuli. However, their exact roles in soybean have not been clarified. In present study, we identified a lesion-mimic mutant in soybean named NT302, which exhibits etiolated phenotype together with chlorotic and spontaneous lesions on leaves at R3 podding stage. The underlying gene was identified as GmHPL encoding hydroperoxide lyase by map-based cloning strategy. Sequence analysis demonstrated that a single nucleotide mutation created a premature termination codon (Gln20-Ter), which resulted in a truncated GmHPL protein in NT302. GmHPL RNA was significantly reduced in NT302 mutant, while genes in AOS branch of the 13-LOX pathway were up-regulated in NT302. The mutant exhibited higher susceptibility to bacterial leaf pustule (BLP) disease, but increased resistance against common cutworm (CCW) pest. GmHPL was significantly induced in response to MeJA, wounding, and CCW in wild type soybean. Virus induced gene silencing (VIGS) of GhHPL genes gave rise to similar lesion-mimic leaf phenotypes in upland cotton, coupled with upregulation of the expression of JA biosynthesis and JA-induced genes. Our study provides evidence that competition exist between HPL and AOS branches in 13-LOX pathway of the oxylipin metabolism in soybean, thereby plays essential roles in modulation of plant development and defense.
Collapse
Affiliation(s)
- Yaqi Wang
- Soybean Research Institute, Nanjing Agricultural University, Nanjing, 210095, China
- Key Laboratory of Biology and Genetic Improvement of Soybean, National Center for Soybean Improvement (Ministry of Agriculture), Nanjing Agricultural University, Nanjing, 210095, China
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Meifeng Liu
- Soybean Research Institute, Nanjing Agricultural University, Nanjing, 210095, China
- Key Laboratory of Biology and Genetic Improvement of Soybean, National Center for Soybean Improvement (Ministry of Agriculture), Nanjing Agricultural University, Nanjing, 210095, China
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Dongdong Ge
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Javaid Akhter Bhat
- Soybean Research Institute, Nanjing Agricultural University, Nanjing, 210095, China
- Key Laboratory of Biology and Genetic Improvement of Soybean, National Center for Soybean Improvement (Ministry of Agriculture), Nanjing Agricultural University, Nanjing, 210095, China
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yawei Li
- Soybean Research Institute, Nanjing Agricultural University, Nanjing, 210095, China
- Key Laboratory of Biology and Genetic Improvement of Soybean, National Center for Soybean Improvement (Ministry of Agriculture), Nanjing Agricultural University, Nanjing, 210095, China
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jiejie Kong
- Soybean Research Institute, Nanjing Agricultural University, Nanjing, 210095, China
- Key Laboratory of Biology and Genetic Improvement of Soybean, National Center for Soybean Improvement (Ministry of Agriculture), Nanjing Agricultural University, Nanjing, 210095, China
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Kang Liu
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| | - Tuanjie Zhao
- Soybean Research Institute, Nanjing Agricultural University, Nanjing, 210095, China
- Key Laboratory of Biology and Genetic Improvement of Soybean, National Center for Soybean Improvement (Ministry of Agriculture), Nanjing Agricultural University, Nanjing, 210095, China
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, 210095, China
| |
Collapse
|
8
|
De Miccolis Angelini RM, Rotolo C, Gerin D, Abate D, Pollastro S, Faretra F. Global transcriptome analysis and differentially expressed genes in grapevine after application of the yeast-derived defense inducer cerevisane. PEST MANAGEMENT SCIENCE 2019; 75:2020-2033. [PMID: 30610743 DOI: 10.1002/ps.5317] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Revised: 12/21/2018] [Accepted: 12/21/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND Cerevisane, made up of cell wall derivatives from the Saccharomyces cerevisiae strain LAS117, is proposed as a resistance inducer in plants. The mode of action of cerevisane was investigated through transcriptome analysis (RNA-Seq) carried out on leaves of potted vines cv. Italia grown in the greenhouse and sprayed at 1-week intervals with cerevisane. Analyses were performed at three time points after one and three sprays as well as on vines challenged with artificial inoculation with Plasmopara viticola, Erysiphe necator and Botrytis cinerea. RESULTS Cerevisane proved effective against downy mildew and caused an increase in expression levels of several genes related to defense responses to fungal pathogens and other stresses and down-regulation of genes involved in several processes related to plant growth and development. Up-regulated genes included genes encoding (i) enzymes involved in hormone metabolism (i.e. salicylic acid, jasmonate, ethylene) and related plant responses, (ii) defense compounds (i.e. pathogenesis-related proteins, phenylalanine ammonia-lyase, stilbene synthases, lipoxygenase, leucine-rich repeat receptor-like protein kinases, non-specific plant lipid transfer proteins, serine-threonine protein kinases involved in signal transduction, superoxide dismutase and glutathione S-transferase involved in response to oxidative stress), (iii) secondary metabolites (i.e. phenylpropanoids, terpenoids, lignin), and (iv) photosynthetic processes (light harvesting chlorophyll A/B-binding proteins and components of the photosystems). CONCLUSION Cerevisane can be a useful tool in protection schedules against downy mildew on grapevine aimed at reducing the usage of synthetic fungicides and preventing fungicide resistance. The results provide the first basic knowledge on the mode of action of yeast-derived elicitors effective against P. viticola on grapevine. © 2019 Society of Chemical Industry.
Collapse
Affiliation(s)
| | - Caterina Rotolo
- Department of Soil, Plant and Food Sciences, University of Bari 'Aldo Moro', Bari, Italy
| | - Donato Gerin
- Department of Soil, Plant and Food Sciences, University of Bari 'Aldo Moro', Bari, Italy
| | - Domenico Abate
- Department of Soil, Plant and Food Sciences, University of Bari 'Aldo Moro', Bari, Italy
| | - Stefania Pollastro
- Department of Soil, Plant and Food Sciences, University of Bari 'Aldo Moro', Bari, Italy
| | - Francesco Faretra
- Department of Soil, Plant and Food Sciences, University of Bari 'Aldo Moro', Bari, Italy
| |
Collapse
|
9
|
Linoleic and linolenic acid hydroperoxides interact differentially with biomimetic plant membranes in a lipid specific manner. Colloids Surf B Biointerfaces 2019; 175:384-391. [DOI: 10.1016/j.colsurfb.2018.12.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 11/29/2018] [Accepted: 12/06/2018] [Indexed: 01/02/2023]
|
10
|
Liang X, Hou X, Li J, Han Y, Zhang Y, Feng N, Du J, Zhang W, Zheng D, Fang S. High-resolution DNA methylome reveals that demethylation enhances adaptability to continuous cropping comprehensive stress in soybean. BMC PLANT BIOLOGY 2019; 19:79. [PMID: 30777019 PMCID: PMC6380062 DOI: 10.1186/s12870-019-1670-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Accepted: 02/01/2019] [Indexed: 05/10/2023]
Abstract
BACKGROUND Continuous cropping stress involves such factors as biological barriers, allelopathic autotoxicity, deterioration of soil physicochemical properties, and soil fertility imbalance and is regarded as a kind of comprehensive stress limiting soybean yield and quality. Genomic DNA methylation is an important regulatory mechanism for plants to resist various environmental stresses. Therefore, it is especially worthwhile to reveal genomic methylation characteristics under stress and clarify the relationship between DNA methylation status and continuous cropping stress adaptability in soybean. RESULTS We generated a genome-wide map of cytosine methylation induced by this kind of comprehensive stress in a tolerant soybean variety (Kang Xian 2, KX2) and a sensitive variety (He Feng, HF55) using whole-genome bisulfite sequencing (WGBS) technology. The expression of DNA demethylase genes was detected using real-time quantitative PCR (qRT-PCR). The functions of differentially methylated genes (DMGs) involved in stress response in biochemical metabolism and genetic information transmission were further assessed based on Gene Ontology (GO) annotation and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis. The results showed that genomic DNA demethylation was closely related to continuous cropping comprehensive stress adaptability in soybean, which was further verified by the increasing expression of DNA demethylases ROS1 and DML. The demethylation of mCpG and mCpHpG (mCpApG preferred) contexts was more critical, which mainly occurred in gene-regulatory regions at the whole-chromosome scale. Moreover, this kind of stress adaptability may be related to various stress responders generated through strengthened glucose catabolism and amino acid and fatty acid anabolism, as well as fidelity transmission of genetic information. CONCLUSIONS Genomic DNA demethylation was closely associated with continuous cropping comprehensive stress adaptability, highlighting the promising potential of screening continuous cropping-tolerant cultivars by DNA methylation index and further exploring the application of DNA demethylases in soybean breeding.
Collapse
Affiliation(s)
- Xilong Liang
- Heilongjiang Bayi Agricultural University, Daqing, 163319 China
| | - Xue Hou
- Heilongjiang Bayi Agricultural University, Daqing, 163319 China
| | - Jianying Li
- Daqing Branch of Heilongjiang Academy of Agriculture Science, Daqing, 163316 China
| | - Yiqiang Han
- Heilongjiang Bayi Agricultural University, Daqing, 163319 China
| | - Yuxian Zhang
- Heilongjiang Bayi Agricultural University, Daqing, 163319 China
| | - Naijie Feng
- Heilongjiang Bayi Agricultural University, Daqing, 163319 China
| | - Jidao Du
- Heilongjiang Bayi Agricultural University, Daqing, 163319 China
| | - Wenhui Zhang
- Heilongjiang Bayi Agricultural University, Daqing, 163319 China
| | - Dianfeng Zheng
- Heilongjiang Bayi Agricultural University, Daqing, 163319 China
| | - Shumei Fang
- Heilongjiang Bayi Agricultural University, Daqing, 163319 China
| |
Collapse
|
11
|
Chinnapandi B, Bucki P, Fitoussi N, Kolomiets M, Borrego E, Braun Miyara S. Tomato SlWRKY3 acts as a positive regulator for resistance against the root-knot nematode Meloidogyne javanica by activating lipids and hormone-mediated defense-signaling pathways. PLANT SIGNALING & BEHAVIOR 2019; 14:1601951. [PMID: 31010365 PMCID: PMC6546140 DOI: 10.1080/15592324.2019.1601951] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Diseases caused by plant-parasitic nematodes in vegetables, among them Meloidogyne spp. root-knot nematodes (RKNs), lead to extensive yield decline. A molecular understanding of the mechanisms underlying plants' innate resistance may enable developing safe alternatives to harmful chemical nematicides in controlling RKNs. A tight relationship has been revealed between the WRKY transcription factors and RKN parasitism on tomato roots. We investigated the function role of tomato SlWRK3 and SlWRKY35 in regulating nematode disease development. Using promoter-GUS reporter gene fusions, we show that both SlWRKY3 and SlWRKY35 are induced within 5 days of infection and through feeding-site development and gall maturation, with a much stronger response of the former vs. the latter to nematode infection. Histological analysis of nematode-feeding sites indicated a high expression of SlWRKY3 in developing and mature feeding cells and associated vasculature cells, whereas SlWRKY35 expression was only observed in mature feeding sites. Both SlWRKY3 and SlWRKY35 promoters were induced by the defense phytohormones salicylic acid and indole-3-butyric acid, with no response to either jasmonic acid or methyl jasmonate. SlWRKY3 overexpression resulted in lower infection of the RKN Meloidogyne javanica, whereas knocking down SlWRKY3 resulted in increased infection. Phytohormone and oxylipin profiles determined by LC-MS/MS showed that the enhanced resistance in the former is coupled with an increased accumulation of defense molecules from the shikimate and oxylipin pathways. Our results pinpoint SlWRKY3 as a positive regulator of induced resistance in response to nematode invasion and infection, mostly during the early stages of nematode infection.
Collapse
Affiliation(s)
- Bharathiraja Chinnapandi
- Department of Entomology, Nematology and Chemistry units, Agricultural Research Organization (ARO), the Volcani Center, Bet Dagan, Israel
| | - Patricia Bucki
- Department of Entomology, Nematology and Chemistry units, Agricultural Research Organization (ARO), the Volcani Center, Bet Dagan, Israel
| | - Nathalia Fitoussi
- Department of Entomology, Nematology and Chemistry units, Agricultural Research Organization (ARO), the Volcani Center, Bet Dagan, Israel
- Department of Plant Pathology and Microbiology, the Faculty of Agriculture, Food & Environment, the Hebrew University of Jerusalem, Rehovot, Israel
| | - Michael Kolomiets
- Department of Plant Pathology and Microbiology, Texas A&M University, TX, USA
| | - Eli Borrego
- Department of Plant Pathology and Microbiology, Texas A&M University, TX, USA
| | - Sigal Braun Miyara
- Department of Entomology, Nematology and Chemistry units, Agricultural Research Organization (ARO), the Volcani Center, Bet Dagan, Israel
- CONTACT Sigal Braun Miyara Department of Entomology, Nematology and Chemistry units, Agricultural Research Organization (ARO), the Volcani Center, Bet Dagan, Israel
| |
Collapse
|
12
|
Wang P, Ng QX, Zhang H, Zhang B, Ong CN, He Y. Metabolite changes behind faster growth and less reproduction of Daphnia similis exposed to low-dose silver nanoparticles. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 163:266-273. [PMID: 30056340 DOI: 10.1016/j.ecoenv.2018.07.080] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 07/18/2018] [Accepted: 07/20/2018] [Indexed: 06/08/2023]
Abstract
With increasing presence of silver nanoparticles (AgNPs) into the environment, the chronic and low-dose effects of AgNPs are of vital concern. This study evaluated chronic physiological effects of AgNPs on Daphnia similis, which were exposed to two ambient encountered concentrations (0.02 and 1 ppb) of AgNPs for 21 days. It was observed that the low-dose AgNPs stimulated a significant increase in average length/dry mass, but inhibited reproduction compared to control specimens. Non-targeted metabolomics based on liquid chromatography-quadrupole-time of flight-mass spectrometry (LC-QTOFMS-MS) and gas chromatograph-quadrupole time of flight mass spectrometry (GC-QTOF-MS) were utilized to elucidate the underlying molecular mechanisms of these responses. Forty one metabolites were identified, including 18 significantly-changed metabolites, suggesting up regulation in protein digestion and absorption (amino acids, such as isoleucine, tryptophan, lysine, leucine, valine, aspartic acid, threonine, tyrosine) and down regulation of lipid related metabolism (fatty acids, such as arachidonic acid, stearidonic acid, linoelaidic acid and eicosapentaenoic acid) were key events in these responses. The increase in these amino acid contents explains the accelerated growth of D. similis from the metabolic pathway of aminoacyl-tRNA biosynthesis. Down regulation of fatty acid contents corresponds to the observed drop in the reproduction rate considering the fatty acid biological enzymatic reaction pathways. Significant changes in metabolites provided a renewed mechanistic understanding of low concentration chronic toxicity of AgNP toxicity on D. similis.
Collapse
Affiliation(s)
- Pu Wang
- School of Environmental Science & Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China; School of Municipal and Environmental Engineering, Lanzhou Jiaotong University, 88 Anning Road, Lanzhou 730070, China
| | - Qin Xiang Ng
- Yong Loo Lin School of Medicine, National University of Singapore, 117597, Singapore
| | - Hui Zhang
- NUS Environmental Research Institute, National University of Singapore, 117597, Singapore
| | - Bo Zhang
- School of Environmental Science & Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China.
| | - Choon Nam Ong
- NUS Environmental Research Institute, National University of Singapore, 117597, Singapore
| | - Yiliang He
- School of Environmental Science & Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| |
Collapse
|
13
|
The role of chloroplasts in plant pathology. Essays Biochem 2018; 62:21-39. [PMID: 29273582 DOI: 10.1042/ebc20170020] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 11/22/2017] [Accepted: 11/28/2017] [Indexed: 12/13/2022]
Abstract
Plants have evolved complex tolerance systems to survive abiotic and biotic stresses. Central to these programmes is a sophisticated conversation of signals between the chloroplast and the nucleus. In this review, we examine the antagonism between abiotic stress tolerance (AST) and immunity: we propose that to generate immunogenic signals, plants must disable AST systems, in particular those that manage reactive oxygen species (ROS), while the pathogen seeks to reactivate or enhance those systems to achieve virulence. By boosting host systems of AST, pathogens trick the plant into suppressing chloroplast immunogenic signals and steer the host into making an inappropriate immune response. Pathogens disrupt chloroplast function, both transcriptionally-by secreting effectors that alter host gene expression by interacting with defence-related kinase cascades, with transcription factors, or with promoters themselves-and post-transcriptionally, by delivering effectors that enter the chloroplast or alter the localization of host proteins to change chloroplast activities. These mechanisms reconfigure the chloroplast proteome and chloroplast-originating immunogenic signals in order to promote infection.
Collapse
|
14
|
Basu P, Kruse CPS, Luesse DR, Wyatt SE. Growth in spaceflight hardware results in alterations to the transcriptome and proteome. LIFE SCIENCES IN SPACE RESEARCH 2017; 15:88-96. [PMID: 29198318 DOI: 10.1016/j.lssr.2017.09.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 09/18/2017] [Accepted: 09/19/2017] [Indexed: 05/21/2023]
Abstract
The Biological Research in Canisters (BRIC) hardware has been used to house many biology experiments on both the Space Transport System (STS, commonly known as the space shuttle) and the International Space Station (ISS). However, microscopic examination of Arabidopsis seedlings by Johnson et al. (2015) indicated the hardware itself may affect cell morphology. The experiment herein was designed to assess the effects of the BRIC-Petri Dish Fixation Units (BRIC-PDFU) hardware on the transcriptome and proteome of Arabidopsis seedlings. To our knowledge, this is the first transcriptomic and proteomic comparison of Arabidopsis seedlings grown with and without hardware. Arabidopsis thaliana wild-type Columbia (Col-0) seeds were sterilized and bulk plated on forty-four 60 mm Petri plates, of which 22 were integrated into the BRIC-PDFU hardware and 22 were maintained in closed containers at Ohio University. Seedlings were grown for approximately 3 days, fixed with RNAlater® and stored at -80 °C prior to RNA and protein extraction, with proteins separated into membrane and soluble fractions prior to analysis. The RNAseq analysis identified 1651 differentially expressed genes; MS/MS analysis identified 598 soluble and 589 membrane proteins differentially abundant both at p < .05. Fold enrichment analysis of gene ontology terms related to differentially expressed transcripts and proteins highlighted a variety of stress responses. Some of these genes and proteins have been previously identified in spaceflight experiments, indicating that these genes and proteins may be perturbed by both conditions.
Collapse
Affiliation(s)
- Proma Basu
- Department of Environmental and Plant Biology, Ohio University, Athens, OH 45701, United States; Interdisciplinary Molecular and Cellular Biology Program, Ohio University, Athens, OH 45701, United States
| | - Colin P S Kruse
- Department of Environmental and Plant Biology, Ohio University, Athens, OH 45701, United States; Interdisciplinary Molecular and Cellular Biology Program, Ohio University, Athens, OH 45701, United States
| | - Darron R Luesse
- Department of Biological Sciences, Southern Illinois University Edwardsville, Edwardsville, IL, United States
| | - Sarah E Wyatt
- Department of Environmental and Plant Biology, Ohio University, Athens, OH 45701, United States; Interdisciplinary Molecular and Cellular Biology Program, Ohio University, Athens, OH 45701, United States.
| |
Collapse
|
15
|
Jang G, Chang SH, Um TY, Lee S, Kim JK, Choi YD. Antagonistic interaction between jasmonic acid and cytokinin in xylem development. Sci Rep 2017; 7:10212. [PMID: 28860478 PMCID: PMC5579306 DOI: 10.1038/s41598-017-10634-1] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 08/10/2017] [Indexed: 01/08/2023] Open
Abstract
Developmental flexibility under stress conditions largely relies on the interactions between hormones that mediate stress responses and developmental processes. In this study, we showed that the stress hormone jasmonic acid (JA) induces formation of extra xylem in the roots of wild-type Arabidopsis thaliana (Col-0). JA signaling mutants such as coronatine insensitive1-1 and jasmonate resistant1-1 did not form extra xylem in response to JA, but the JA biosynthesis mutant oxophytodienoate-reductase3 did form extra xylem. These observations suggested that the JA response promotes xylem development. To understand the mechanism, we examined the regulatory interaction between JA and cytokinin, a negative regulator of xylem development. JA treatment reduced cytokinin responses in the vasculature, and exogenous cytokinin nullified the effect of JA on formation of extra xylem. A time-course experiment showed that suppression of cytokinin responses by JA does not occur rapidly, but the JA-mediated xylem phenotype is tightly linked to the suppression of the cytokinin response. Further analysis of arabidopsis histidine phosphotransfer protein6-1 and myc2-3 mutants revealed that the JA-responsive transcription factor MYC2 regulates the expression of AHP6 in response to JA and expression of AHP6 is involved in the JA-mediated xylem phenotype.
Collapse
Affiliation(s)
- Geupil Jang
- Department of Agricultural Biotechnology and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 151-921, Korea
| | - Sun Hyun Chang
- Department of Agricultural Biotechnology and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 151-921, Korea
| | - Tae Young Um
- Department of Agricultural Biotechnology and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 151-921, Korea
| | - Sangyool Lee
- Department of Agricultural Biotechnology and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 151-921, Korea
| | - Ju-Kon Kim
- Graduate School of International Agricultural Technology and Crop Biotechnology Institute/Green BioScience and Technology, Seoul National University, Pyeongchang, 232-916, Korea
| | - Yang Do Choi
- Department of Agricultural Biotechnology and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, 151-921, Korea.
| |
Collapse
|
16
|
Zhao L, Chen Y, Wu K, Yan H, Hao X, Wu Y. Application of fatty acids as antiviral agents against tobacco mosaic virus. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2017; 139:87-91. [PMID: 28595927 DOI: 10.1016/j.pestbp.2017.05.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 05/04/2017] [Indexed: 05/25/2023]
Abstract
Numerous studies reported fatty acids (FAs) affecting basal resistance to bacterial and fungal pathogens in plants, but limited reports focused on antiviral agents. In this study, oleic acid was separated from cottonseed oil sludge by antiviral bioassay-guided methods. Antiviral activity of FAs was compared with that of Ningnanmycin. Subsequently, effects of FAs on defense-related enzymes (PAL, POD) and defense-related genes (PR-1a, PR-5) were studied. FAs presented moderate antiviral activity, which is close to that of Ningnanmycin, and activities of PAL and POD were higher in oleic-acid-treated tobacco leaves than those inoculated with tobacco mosaic virus (TMV) and water-treated tobacco. In oleic-acid-treated tobacco, expression levels of PR-1a and PR-5 genes rapidly increased from days 1-3. All results showed that FAs can increase resistance against TMV, and related mechanism can be attributed to activated expressions of a number of defense-related genes, suggesting that FAs can potentially act as pesticides for integrated control of plant viruses in the future.
Collapse
Affiliation(s)
- Lei Zhao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China; Key Laboratory of Crop Pest Integrated Pest Management on Crop in Northwestern Loess Plateau, Ministry of Agriculture, Northwest A&F University, Yangling 712100, China; Key Laboratory of Plant Protection Resources and Pest Management, Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| | - Yujia Chen
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China; Key Laboratory of Crop Pest Integrated Pest Management on Crop in Northwestern Loess Plateau, Ministry of Agriculture, Northwest A&F University, Yangling 712100, China; Key Laboratory of Plant Protection Resources and Pest Management, Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| | - Kuan Wu
- Yangling Vocational & Technical College, Yangling 712100, China
| | - He Yan
- Research & Development Center of Biorational Pesticides, Northwest A&F University, Yangling 712100, China
| | - Xingan Hao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China; Key Laboratory of Crop Pest Integrated Pest Management on Crop in Northwestern Loess Plateau, Ministry of Agriculture, Northwest A&F University, Yangling 712100, China; Key Laboratory of Plant Protection Resources and Pest Management, Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling 712100, China
| | - Yunfeng Wu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling 712100, China; Key Laboratory of Crop Pest Integrated Pest Management on Crop in Northwestern Loess Plateau, Ministry of Agriculture, Northwest A&F University, Yangling 712100, China; Key Laboratory of Plant Protection Resources and Pest Management, Ministry of Education, College of Plant Protection, Northwest A&F University, Yangling 712100, China.
| |
Collapse
|
17
|
Chen H, Adam Arsovski A, Yu K, Wang A. Deep sequencing leads to the identification of eukaryotic translation initiation factor 5A as a key element in Rsv1-mediated lethal systemic hypersensitive response to Soybean mosaic virus infection in soybean. MOLECULAR PLANT PATHOLOGY 2017; 18:391-404. [PMID: 27019403 PMCID: PMC6638201 DOI: 10.1111/mpp.12407] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 03/23/2016] [Accepted: 03/25/2016] [Indexed: 05/23/2023]
Abstract
Rsv1, a single dominant resistance locus in soybean, confers extreme resistance to the majority of Soybean mosaic virus (SMV) strains, but is susceptible to the G7 strain. In Rsv1-genotype soybean, G7 infection provokes a lethal systemic hypersensitive response (LSHR), a delayed host defence response. The Rsv1-mediated LSHR signalling pathway remains largely unknown. In this study, we employed a genome-wide investigation to gain an insight into the molecular interplay between SMV G7 and Rsv1-genotype soybean. Small RNA (sRNA), degradome and transcriptome sequencing analyses were used to identify differentially expressed genes (DEGs) and microRNAs (DEMs) in response to G7 infection. A number of DEGs, DEMs and microRNA targets, and the interaction network of DEMs and their target mRNAs responsive to G7 infection, were identified. Knock-down of one of the identified DEGs, the eukaryotic translation initiation factor 5A (eIF5A), diminished the LSHR and enhanced viral accumulation, suggesting the essential role of eIF5A in the G7-induced, Rsv1-mediated LSHR signalling pathway. This work provides an in-depth genome-wide analysis of high-throughput sequencing data, and identifies multiple genes and microRNA signatures that are associated with the Rsv1-mediated LSHR.
Collapse
Affiliation(s)
- Hui Chen
- London Research and Development Centre, Agriculture and Agri‐Food CanadaOttawaONCanadaN5T 4T3
- Department of BiologyUniversity of Western OntarioLondonONCanadaN6A 5B7
| | - Andrej Adam Arsovski
- London Research and Development Centre, Agriculture and Agri‐Food CanadaOttawaONCanadaN5T 4T3
| | - Kangfu Yu
- Greenhouse and Processing Crops Research Centre, Agriculture and Agri‐Food CanadaHarrowONCanadaN0R 1G0
| | - Aiming Wang
- London Research and Development Centre, Agriculture and Agri‐Food CanadaOttawaONCanadaN5T 4T3
- Department of BiologyUniversity of Western OntarioLondonONCanadaN6A 5B7
| |
Collapse
|
18
|
Sun YH, Hung CY, Qiu J, Chen J, Kittur FS, Oldham CE, Henny RJ, Burkey KO, Fan L, Xie J. Accumulation of high OPDA level correlates with reduced ROS and elevated GSH benefiting white cell survival in variegated leaves. Sci Rep 2017; 7:44158. [PMID: 28276518 PMCID: PMC5343462 DOI: 10.1038/srep44158] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 02/02/2017] [Indexed: 12/19/2022] Open
Abstract
Variegated 'Marble Queen' (Epipremnum aureum) plant has white (VMW) and green (VMG) sectors within the same leaf. The white sector cells containing undifferentiated chloroplasts are viable, but the underlying mechanism for their survival and whether these white cells would use any metabolites as signal molecules to communicate with the nucleus for maintaining their viability remain unclear. We analyzed and compared phytohormone levels with their precursors produced in chloroplasts between VMW and VMG, and further compared their transcriptomes to understand the consequences related to the observed elevated 12-oxo phytodienoic acid (OPDA), which was 9-fold higher in VMW than VMG. Transcriptomic study showed that a large group of OPDA-responsive genes (ORGs) were differentially expressed in VMW, including stress-related transcription factors and genes for reactive oxygen species (ROS) scavengers, DNA replication and repair, and protein chaperones. Induced expression of these ORGs could be verified in OPDA-treated green plants. Reduced level of ROS and higher levels of glutathione in VMW were further confirmed. Our results suggest that elevated OPDA or its related compounds are recruited by white cells as a signaling molecule(s) to up-regulate stress and scavenging activity related genes that leads to reduced ROS levels and provides survival advantages to the white cells.
Collapse
Affiliation(s)
- Ying-Hsuan Sun
- Department of Forestry, National Chung Hsing University, Taichung 402, Taiwan
| | - Chiu-Yueh Hung
- Department of Pharmaceutical Sciences, Biomanufacturing Research Institute & Technology Enterprise, North Carolina Central University, Durham, NC 27707, USA
| | - Jie Qiu
- Department of Agronomy, Zhejiang University, Hangzhou 310029, China
| | - Jianjun Chen
- Environmental Horticulture Department and Mid-Florida Research and Education Center, University of Florida, Apopka, FL 32703, USA
| | - Farooqahmed S. Kittur
- Department of Pharmaceutical Sciences, Biomanufacturing Research Institute & Technology Enterprise, North Carolina Central University, Durham, NC 27707, USA
| | - Carla E. Oldham
- Department of Pharmaceutical Sciences, Biomanufacturing Research Institute & Technology Enterprise, North Carolina Central University, Durham, NC 27707, USA
| | - Richard J. Henny
- Environmental Horticulture Department and Mid-Florida Research and Education Center, University of Florida, Apopka, FL 32703, USA
| | - Kent O. Burkey
- USDA-ARS Plant Science Research Unit and Department of Crop Science, North Carolina State University, Raleigh, NC 27695, USA
| | - Longjiang Fan
- Department of Agronomy, Zhejiang University, Hangzhou 310029, China
| | - Jiahua Xie
- Department of Pharmaceutical Sciences, Biomanufacturing Research Institute & Technology Enterprise, North Carolina Central University, Durham, NC 27707, USA
| |
Collapse
|
19
|
Ayadi M, Hanana M, Kharrat N, Merchaoui H, Marzoug RB, Lauvergeat V, Rebaï A, Mzid R. The WRKY Transcription Factor Family in Citrus: Valuable and Useful Candidate Genes for Citrus Breeding. Appl Biochem Biotechnol 2016; 180:516-543. [PMID: 27193354 DOI: 10.1007/s12010-016-2114-8] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 05/05/2016] [Indexed: 11/28/2022]
Abstract
WRKY transcription factors belong to a large family of plant transcriptional regulators whose members have been reported to be involved in a wide range of biological roles including plant development, adaptation to environmental constraints and response to several diseases. However, little or poor information is available about WRKY's in Citrus. The recent release of completely assembled genomes sequences of Citrus sinensis and Citrus clementina and the availability of ESTs sequences from other citrus species allowed us to perform a genome survey for Citrus WRKY proteins. In the present study, we identified 100 WRKY members from C. sinensis (51), C. clementina (48) and Citrus unshiu (1), and analyzed their chromosomal distribution, gene structure, gene duplication, syntenic relation and phylogenetic analysis. A phylogenetic tree of 100 Citrus WRKY sequences with their orthologs from Arabidopsis has distinguished seven groups. The CsWRKY genes were distributed across all ten sweet orange chromosomes. A comprehensive approach and an integrative analysis of Citrus WRKY gene expression revealed variable profiles of expression within tissues and stress conditions indicating functional diversification. Thus, candidate Citrus WRKY genes have been proposed as potentially involved in fruit acidification, essential oil biosynthesis and abiotic/biotic stress tolerance. Our results provided essential prerequisites for further WRKY genes cloning and functional analysis with an aim of citrus crop improvement.
Collapse
Affiliation(s)
- M Ayadi
- Laboratory of Extremophile Plants. Center of Biotechnology of Borj-Cédria (CBBC), BP 901, Hammam-lif, 2050, Tunisia. .,Laboratory of Molecular and Cellular Screening Processes, Center of Biotechnology of Sfax, University of Sfax, Sidi Mansour Road, P.O. Box 1177, 3018, Sfax, Tunisia.
| | - M Hanana
- Laboratory of Extremophile Plants. Center of Biotechnology of Borj-Cédria (CBBC), BP 901, Hammam-lif, 2050, Tunisia
| | - N Kharrat
- Laboratory of Molecular and Cellular Screening Processes, Center of Biotechnology of Sfax, University of Sfax, Sidi Mansour Road, P.O. Box 1177, 3018, Sfax, Tunisia
| | - H Merchaoui
- Laboratory of Extremophile Plants. Center of Biotechnology of Borj-Cédria (CBBC), BP 901, Hammam-lif, 2050, Tunisia
| | - R Ben Marzoug
- Laboratory of Molecular and Cellular Screening Processes, Center of Biotechnology of Sfax, University of Sfax, Sidi Mansour Road, P.O. Box 1177, 3018, Sfax, Tunisia
| | - V Lauvergeat
- Unit 'Ecophysiology and Grape Functional Genomics' Institute of Vine and Wine Sciences, INRA Bordeaux-Aquitaine, 210 Chemin de Leysotte - CS 50008, 33882, Villenave d'Ornon Cedex, France
| | - A Rebaï
- Laboratory of Molecular and Cellular Screening Processes, Center of Biotechnology of Sfax, University of Sfax, Sidi Mansour Road, P.O. Box 1177, 3018, Sfax, Tunisia
| | - R Mzid
- Laboratory of Extremophile Plants. Center of Biotechnology of Borj-Cédria (CBBC), BP 901, Hammam-lif, 2050, Tunisia
| |
Collapse
|
20
|
Kanobe C, McCarville MT, O’Neal ME, Tylka GL, MacIntosh GC. Soybean Aphid Infestation Induces Changes in Fatty Acid Metabolism in Soybean. PLoS One 2015; 10:e0145660. [PMID: 26684003 PMCID: PMC4684210 DOI: 10.1371/journal.pone.0145660] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Accepted: 12/07/2015] [Indexed: 12/30/2022] Open
Abstract
The soybean aphid (Aphis glycines Matsumura) is one of the most important insect pests of soybeans in the North-central region of the US. It has been hypothesized that aphids avoid effective defenses by inhibition of jasmonate-regulated plant responses. Given the role fatty acids play in jasmonate-induced plant defenses, we analyzed the fatty acid profile of soybean leaves and seeds from aphid-infested plants. Aphid infestation reduced levels of polyunsaturated fatty acids in leaves with a concomitant increase in palmitic acid. In seeds, a reduction in polyunsaturated fatty acids was associated with an increase in stearic acid and oleic acid. Soybean plants challenged with the brown stem rot fungus or with soybean cyst nematodes did not present changes in fatty acid levels in leaves or seeds, indicating that the changes induced by aphids are not a general response to pests. One of the polyunsaturated fatty acids, linolenic acid, is the precursor of jasmonate; thus, these changes in fatty acid metabolism may be examples of "metabolic hijacking" by the aphid to avoid the induction of effective defenses. Based on the changes in fatty acid levels observed in seeds and leaves, we hypothesize that aphids potentially induce interference in the fatty acid desaturation pathway, likely reducing FAD2 and FAD6 activity that leads to a reduction in polyunsaturated fatty acids. Our data support the idea that aphids block jasmonate-dependent defenses by reduction of the hormone precursor.
Collapse
Affiliation(s)
- Charles Kanobe
- Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, Iowa, United States of America
| | - Michael T. McCarville
- Department of Entomology, Iowa State University, Ames, Iowa, United States of America
| | - Matthew E. O’Neal
- Department of Entomology, Iowa State University, Ames, Iowa, United States of America
| | - Gregory L. Tylka
- Department of Plant Pathology and Microbiology, Iowa State University, Ames, Iowa, United States of America
| | - Gustavo C. MacIntosh
- Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, Iowa, United States of America
| |
Collapse
|
21
|
Subbaraj AK, Barrett BA, Wakelin SA, Fraser K. Using non-targeted direct analysis in real time-mass spectrometry (DART-MS) to discriminate seeds based on endogenous or exogenous chemicals. Anal Bioanal Chem 2015; 407:8047-58. [DOI: 10.1007/s00216-015-8977-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2015] [Revised: 08/11/2015] [Accepted: 08/12/2015] [Indexed: 12/18/2022]
|
22
|
Al-Dhabi NA, Arasu MV, Kim SJ, RomijUddin M, Park WT, Lee SY, Park SU. Methyl Jasmonate- and Light-Induced Glucosinolate and Anthocyanin Biosynthesis in Radish Seedlings. Nat Prod Commun 2015. [DOI: 10.1177/1934578x1501000719] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Radish sprouts and young seedlings are considered important dietary vegetables in Asian countries. In this study, we investigated the levels of glucosinolate and anthocyanin accumulation in radish seedlings in response to light and methyl jasmonate (MeJA) treatments. MeJA facilitated the accumulation of glucosinolate and anthocyanins under light conditions. The glucosinolate and anthocyanin contents in the radish seedlings that were exposed to light after MeJA treatment were higher than those of the seedlings that were grown in the dark without MeJA. At a concentration of 100 μM, MeJA led to the greatest accumulation of the most glucosinolates under both light and dark conditions. Under light conditions, the levels of glucoraphenin, glucoerucin, and glucotropaeolin accumulation were 1.53-, 1.60-, and 1.30-fold higher, respectively, than those of the control. Remarkable accumulations of glucobrassicin were observed under light conditions (4.4-, 6.7-, and 7.8-fold higher than that of the control following the application of 100, 300, and 500 μM MeJA, respectively). The level of cyanidin in the 300μM MeJA-treated seedlings was double of that in the control without MeJA treatment. The highest level of pelargonidin was observed after treatment with 500 μMMeJA under light conditions; this level was 1.73times higher than that in the control. A similar trend of anthocyaninaccumulation was observed in the radish seedlings following MeJA treatment under dark conditions, but the levels of anthocyanins were considerably lower in the seedlings that were grown in the dark. Our findings suggest that light and low concentrations of MeJA enhance the accumulations of glucosinolates and anthocyanins during the development of radish seedlings.
Collapse
Affiliation(s)
- Naif Abdullah Al-Dhabi
- Department of Botany and Microbiology, Addiriyah Chair for Environmental Studies, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Mariadhas Valan Arasu
- Department of Botany and Microbiology, Addiriyah Chair for Environmental Studies, College of Science, King Saud University, P. O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Sun Ju Kim
- Department of Bio-Environmental Chemistry, Chungnam National University, 99 Daehak-Ro, Yuseong-Gu, Daejeon 305–764, Korea
| | - Md. RomijUddin
- Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh
| | - Woo Tae Park
- Department of Crop Science, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 305-764, Korea
| | - Sook Young Lee
- Regional Innovation Center for Dental Science & Engineering, Chosun University, 309Pilmun-daero, Dong-gu, Gwangju, 501-759, Korea
| | - Sang Un Park
- Department of Crop Science, Chungnam National University, 99 Daehak-ro, Yuseong-gu, Daejeon, 305-764, Korea
- Visiting Professor Program (VPP), King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| |
Collapse
|
23
|
Hamayun M, Hussain A, Khan SA, Irshad M, Khan AL, Waqas M, Shahzad R, Iqbal A, Ullah N, Rehman G, Kim HY, Lee IJ. Kinetin modulates physio-hormonal attributes and isoflavone contents of Soybean grown under salinity stress. FRONTIERS IN PLANT SCIENCE 2015; 6:377. [PMID: 26082785 PMCID: PMC4450176 DOI: 10.3389/fpls.2015.00377] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Accepted: 05/12/2015] [Indexed: 05/23/2023]
Abstract
Crop productivity continues to decline due to a wide array of biotic and abiotic stresses. Salinity is one of the worst abiotic stresses, as it causes huge losses to crop yield each year. Kinetin (Kn) has been reported as plant growth regulator since long, but its role in improving plant growth and food quality under saline conditions through mediating phytohormonal cross-talk is poorly studied. Current study was designed to evaluate the impact of exogenously applied Kn on growth, isoflovones and endogenous phytohormones of soybean grown under NaCl induced salt stress. Soybean plants were grown in perlite (semi hydroponic), and under controlled green-house conditions. Elevated levels of exogenous Kn significantly mitigated the adverse effect of NaCl and rescued plant growth attributes, i.e., plant height, fresh and dry biomass of soybean plants grown in all treatments. Higher diadzen, glycitin, and genistin contents were observed in plants treated with elevated Kn in the presence or absence of NaCl induce salt stress. The gibberellins (GAs) biosynthesis pathway was up-regulated by Kn as the bioactive GA1 and GA4 contents were significantly higher in Kn treated plants, as compared to control, while GAs level reduced in NaCl treated plants. Contrary to GAs, the abscisic acid contents declined with Kn but promoted in NaCl stressed soybean plants. The endogenous jasmonic acid and salicylic acid contents of soybean enhanced with elevated Kn application, but they showed an antagonistic response under salt stress. Current study supports the active role of Kn to ameliorate the adverse effects of salt stress on the growth and food quality of soybean. The favorable role of Kn toward soybean growth under salt stress may be attributed to its potential to modulate cross-talk between the various phytohormones involved in soybean growth and its resistance to salinity stress.
Collapse
Affiliation(s)
- Muhammad Hamayun
- Department of Botany, Abdul Wali Khan University MardanMardan, Pakistan
| | - Anwar Hussain
- Department of Botany, Abdul Wali Khan University MardanMardan, Pakistan
| | - Sumera Afzal Khan
- Center of Biotechnology and Microbiology, University of PeshawarPeshawar, Pakistan
| | - Muhammad Irshad
- Department of Botany, Abdul Wali Khan University MardanMardan, Pakistan
| | - Abdul Latif Khan
- UoN Chair of Medicinal Plants and Marine Natural Products, University of NizwaNizwa, Oman
- School of Applied Biosciences, College of Agriculture and Life Science, Kyungpook National UniversityDaegu, South Korea
| | - Muhammad Waqas
- School of Applied Biosciences, College of Agriculture and Life Science, Kyungpook National UniversityDaegu, South Korea
| | - Raheem Shahzad
- School of Applied Biosciences, College of Agriculture and Life Science, Kyungpook National UniversityDaegu, South Korea
| | - Amjad Iqbal
- Department of Agriculture, Abdul Wali Khan University MardanMardan, Pakistan
| | - Nazif Ullah
- Department of Biotechnology, Abdul Wali Khan University MardanMardan, Pakistan
| | - Gauhar Rehman
- Department of Zoology, Abdul Wali Khan University MardanMardan, Pakistan
| | - Ho-Youn Kim
- Department of Plant Sciences, University of California DavisDavis, CA, USA
| | - In-Jung Lee
- School of Applied Biosciences, College of Agriculture and Life Science, Kyungpook National UniversityDaegu, South Korea
| |
Collapse
|
24
|
Zhao Y, Zhou J, Xing D. Phytochrome B-mediated activation of lipoxygenase modulates an excess red light-induced defence response in Arabidopsis. JOURNAL OF EXPERIMENTAL BOTANY 2014; 65:4907-18. [PMID: 24916071 PMCID: PMC4144769 DOI: 10.1093/jxb/eru247] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Lipoxygenase (LOX), a non-haem-iron-containing dioxygenase, is activated under various biotic or abiotic stresses to trigger a series resistance response, but the molecular mechanism of LOX activation remains unclear. This work investigated the activation of LOX during the plant defence response induced by excess red light (RL). In conditions of RL-induced defence, Arabidopsis LOX activity and transcription levels of LOX2, LOX3, and LOX4 were both upregulated. Under RL, phytochrome B promoted the degradation of phytochrome-interacting factor 3 (PIF3), a factor that inhibited the expression levels of LOXs, and thus the transcription levels of LOX2, LOX3, and LOX4 were increased. Upon pathogen infection, the activity of mitogen-activated protein kinase 3 (MPK3) and MPK6 was increased in plants pre-treated with RL. Moreover, experiments with the inhibitor PD98059 and mutants mpk3 and mpk6-2 demonstrated that MPK3 and MPK6 were both responsible for LOX activation. Further results showed that, in response to RL, an increase in cytoplasmic calcium concentration and upregulation of calmodulin 3 (CaM3) transcript level occurred upstream of MPK3 and MPK6 activation. Collectively, these results suggested that activation of LOX both at the transcript level and in terms of activity modulates the defence response induced by RL, providing a new insight into the mechanistic study of LOX during plant defences.
Collapse
Affiliation(s)
- Yuanyuan Zhao
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, PR China
| | - Jun Zhou
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, PR China
| | - Da Xing
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, PR China
| |
Collapse
|
25
|
Scala A, Allmann S, Mirabella R, Haring MA, Schuurink RC. Green leaf volatiles: a plant's multifunctional weapon against herbivores and pathogens. Int J Mol Sci 2013; 14:17781-811. [PMID: 23999587 PMCID: PMC3794753 DOI: 10.3390/ijms140917781] [Citation(s) in RCA: 233] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Revised: 08/06/2013] [Accepted: 08/13/2013] [Indexed: 12/27/2022] Open
Abstract
Plants cannot avoid being attacked by an almost infinite number of microorganisms and insects. Consequently, they arm themselves with molecular weapons against their attackers. Plant defense responses are the result of a complex signaling network, in which the hormones jasmonic acid (JA), salicylic acid (SA) and ethylene (ET) are the usual suspects under the magnifying glass when researchers investigate host-pest interactions. However, Green Leaf Volatiles (GLVs), C6 molecules, which are very quickly produced and/or emitted upon herbivory or pathogen infection by almost every green plant, also play an important role in plant defenses. GLVs are semiochemicals used by insects to find their food or their conspecifics. They have also been reported to be fundamental in indirect defenses and to have a direct effect on pests, but these are not the only roles of GLVs. These volatiles, being probably one of the fastest weapons exploited, are also able to directly elicit or prime plant defense responses. Moreover, GLVs, via crosstalk with phytohormones, mostly JA, can influence the outcome of the plant’s defense response against pathogens. For all these reasons GLVs should be considered as co-protagonists in the play between plants and their attackers.
Collapse
Affiliation(s)
| | | | | | | | - Robert C. Schuurink
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +31-20-5257-933; Fax: +31-20-5257-934
| |
Collapse
|
26
|
Kim YB, Kim JK, Uddin MR, Xu H, Park WT, Tuan PA, Li X, Chung E, Lee JH, Park SU. Metabolomics analysis and biosynthesis of rosmarinic acid in Agastache rugosa Kuntze treated with methyl jasmonate. PLoS One 2013; 8:e64199. [PMID: 23724034 PMCID: PMC3665811 DOI: 10.1371/journal.pone.0064199] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Accepted: 04/10/2013] [Indexed: 11/18/2022] Open
Abstract
This study investigated the effect of methyl jasmonate (MeJA) on metabolic profiles and rosmarinic acid (RA) biosynthesis in cell cultures of Agastache rugosa Kuntze. Transcript levels of phenylpropanoid biosynthetic genes, i.e., ArPAL, Ar4CL, and ArC4H, maximally increased 4.5-fold, 3.4-fold, and 3.5-fold, respectively, compared with the untreated controls, and the culture contained relatively high amounts of RA after exposure of cells to 50 µM MeJA. RA levels were 2.1-, 4.7-, and 3.9-fold higher after exposure to 10, 50, and 100 µM MeJA, respectively, than those in untreated controls. In addition, the transcript levels of genes attained maximum levels at different time points after the initial exposure. The transcript levels of ArC4H and Ar4CL were transiently induced by MeJA, and reached a maximum of up to 8-fold at 3 hr and 6 hr, respectively. The relationships between primary metabolites and phenolic acids in cell cultures of A. rugosa treated with MeJA were analyzed by gas chromatography coupled with time-of-flight mass spectrometry. In total, 45 metabolites, including 41 primary metabolites and 4 phenolic acids, were identified from A. rugosa. Metabolite profiles were subjected to partial least square-discriminate analysis to evaluate the effects of MeJA. The results indicate that both phenolic acids and precursors for the phenylpropanoid biosynthetic pathway, such as aromatic amino acids and shikimate, were induced as a response to MeJA treatment. Therefore, MeJA appears to have an important impact on RA accumulation, and the increased RA accumulation in the treated cells might be due to activation of the phenylpropanoid genes ArPAL, ArC4H, and Ar4CL.
Collapse
Affiliation(s)
- Yeon Bok Kim
- Department of Crop Science, Chungnam National University, Daejeon, Republic of Korea
| | - Jae Kwang Kim
- National Academy of Agricultural Science, Rural Development Administration, Suwon, Republic of Korea
| | - Md. Romij Uddin
- Department of Crop Science, Chungnam National University, Daejeon, Republic of Korea
| | - Hui Xu
- College of Life Science, Inner Mongolia University for Nationalities, Inner Mongolia, China
| | - Woo Tae Park
- Department of Crop Science, Chungnam National University, Daejeon, Republic of Korea
| | - Pham Anh Tuan
- Department of Crop Science, Chungnam National University, Daejeon, Republic of Korea
| | - Xiaohua Li
- Department of Crop Science, Chungnam National University, Daejeon, Republic of Korea
| | - Eunsook Chung
- Department of Genetic Engineering, Dong-A University, Busan, Republic of Korea
| | - Jai-Heon Lee
- Department of Genetic Engineering, Dong-A University, Busan, Republic of Korea
| | - Sang Un Park
- Department of Crop Science, Chungnam National University, Daejeon, Republic of Korea
| |
Collapse
|
27
|
Sabater B, Martín M. Hypothesis: increase of the ratio singlet oxygen plus superoxide radical to hydrogen peroxide changes stress defense response to programmed leaf death. FRONTIERS IN PLANT SCIENCE 2013; 4:479. [PMID: 24324479 PMCID: PMC3839260 DOI: 10.3389/fpls.2013.00479] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Accepted: 11/05/2013] [Indexed: 05/07/2023]
Abstract
The level of reactive oxygen species (ROS) increases under different stresses and, by destroying cellular components, may cause cell death. In addition, ROS are part of the complex network of transduction signals that induce defense reactions against stress or, alternatively, trigger programmed cell death, and key questions are the levels of each ROS that, respectively determine defense and death responses of the cell. The answer to those questions is difficult because there are several patterns of cell death that frequently appear mixed and are hardly distinguishable. Moreover, although considerable progresses have been achieved in the determination of the levels of specific ROS, critical questions remain on the ROS level in specific cell compartments. By considering chloroplasts as the main source of ROS in photosynthetic tissues at light, a comparison of the levels in stress and senescence of the chloroplastic activities involved in the generation and scavenging of ROS suggests plausible differences in the levels of specific ROS between stress defense and death. In effect, the three activities of the chlororespiratory chain increase similarly in stress defense response. However, in senescence, superoxide dismutase (SOD), that converts superoxide anion radical ([Formula: see text]) to hydrogen peroxide (H2O2,) decreases, while the thylakoid Ndh complex, that favors the generation of singlet oxygen ((1)O2) and [Formula: see text], and peroxidase (PX), that consumes H2O2, increase. The obvious inference is that, in respect to defense response, the ratio ((1)O2 plus [Formula: see text])/H2O2 is increased in the senescence previous to cell death. We hypothesize that the different ROS ratios, probably through changes in the jasmonic acid/H2O2 ratio, could determine the activation of the defense network or the death network response of the cell.
Collapse
Affiliation(s)
- Bartolomé Sabater
- *Correspondence: Bartolomé Sabater, Departamento de Ciencias de la Vida (Fisiología Vegetal), Universidad de Alcalá, Alcalá de Henares, 28871 Madrid, Spain e-mail:
| | | |
Collapse
|
28
|
Liu X, Li F, Tang J, Wang W, Zhang F, Wang G, Chu J, Yan C, Wang T, Chu C, Li C. Activation of the jasmonic acid pathway by depletion of the hydroperoxide lyase OsHPL3 reveals crosstalk between the HPL and AOS branches of the oxylipin pathway in rice. PLoS One 2012; 7:e50089. [PMID: 23209649 PMCID: PMC3510209 DOI: 10.1371/journal.pone.0050089] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2012] [Accepted: 10/15/2012] [Indexed: 01/31/2023] Open
Abstract
The allene oxide synthase (AOS) and hydroperoxide lyase (HPL) branches of the oxylipin pathway, which underlie the production of jasmonates and aldehydes, respectively, function in plant responses to a range of stresses. Regulatory crosstalk has been proposed to exist between these two signaling branches; however, there is no direct evidence of this. Here, we identified and characterized a jasmonic acid (JA) overproduction mutant, cea62, by screening a rice T-DNA insertion mutant library for lineages that constitutively express the AOS gene. Map-based cloning was used to identify the underlying gene as hydroperoxide lyase OsHPL3. HPL3 expression and the enzyme activity of its product, (E)-2-hexenal, were depleted in the cea62 mutant, which resulted in the dramatic overproduction of JA, the activation of JA signaling, and the emergence of the lesion mimic phenotype. A time-course analysis of lesion formation and of the induction of defense responsive genes in the cea62 mutant revealed that the activation of JA biosynthesis and signaling in cea62 was regulated in a developmental manner, as was OsHPL3 activity in the wild-type plant. Microarray analysis showed that the JA-governed defense response was greatly activated in cea62 and this plant exhibited enhanced resistance to the T1 strain of the bacterial blight pathogen Xanthomonasoryzaepvoryzae (Xoo). The wounding response was attenuated in cea62 plants during the early stages of development, but partially recovered when JA levels were elevated during the later stages. In contrast, the wounding response was not altered during the different developmental stages of wild-type plants. These findings suggest that these two branches of the oxylipin pathway exhibit crosstalk with regards to biosynthesis and signaling and cooperate with each other to function in diverse stress responses.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | | | - Chengcai Chu
- State Key Laboratory of Plant Genomics, National Centre for Plant Gene Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Chuanyou Li
- State Key Laboratory of Plant Genomics, National Centre for Plant Gene Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, People's Republic of China
| |
Collapse
|
29
|
Neumann P, Brodhun F, Sauer K, Herrfurth C, Hamberg M, Brinkmann J, Scholz J, Dickmanns A, Feussner I, Ficner R. Crystal structures of Physcomitrella patens AOC1 and AOC2: insights into the enzyme mechanism and differences in substrate specificity. PLANT PHYSIOLOGY 2012; 160:1251-66. [PMID: 22987885 PMCID: PMC3490582 DOI: 10.1104/pp.112.205138] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Accepted: 09/14/2012] [Indexed: 05/18/2023]
Abstract
In plants, oxylipins regulate developmental processes and defense responses. The first specific step in the biosynthesis of the cyclopentanone class of oxylipins is catalyzed by allene oxide cyclase (AOC) that forms cis(+)-12-oxo-phytodienoic acid. The moss Physcomitrella patens has two AOCs (PpAOC1 and PpAOC2) with different substrate specificities for C₁₈- and C₂₀-derived substrates, respectively. To better understand AOC's catalytic mechanism and to elucidate the structural properties that explain the differences in substrate specificity, we solved and analyzed the crystal structures of 36 monomers of both apo and ligand complexes of PpAOC1 and PpAOC2. From these data, we propose the following intermediates in AOC catalysis: (1) a resting state of the apo enzyme with a closed conformation, (2) a first shallow binding mode, followed by (3) a tight binding of the substrate accompanied by conformational changes in the binding pocket, and (4) initiation of the catalytic cycle by opening of the epoxide ring. As expected, the substrate dihydro analog cis-12,13S-epoxy-9Z,15Z-octadecadienoic acid did not cyclize in the presence of PpAOC1; however, when bound to the enzyme, it underwent isomerization into the corresponding trans-epoxide. By comparing complex structures of the C₁₈ substrate analog with in silico modeling of the C₂₀ substrate analog bound to the enzyme allowed us to identify three major molecular determinants responsible for the different substrate specificities (i.e. larger active site diameter, an elongated cavity of PpAOC2, and two nonidentical residues at the entrance of the active site).
Collapse
|
30
|
Morkunas I, Mai VC, Gabryś B. Phytohormonal signaling in plant responses to aphid feeding. ACTA PHYSIOLOGIAE PLANTARUM 2011; 33:2057-2073. [PMID: 0 DOI: 10.1007/s11738-011-0751-7] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
|
31
|
Abstract
Fatty acids (FAs) consist of long hydrophobic, often unbranched chains of hydrocarbons, with hydrophilic carboxylic acid groups at one end. They are an important source of reserve energy and essential components of membrane lipids in all living organisms. In plants, FA metabolic pathways play significant roles in pathogen defense. Historically, FAs were only assigned passive roles in plant defense such as biosynthetic precursors for cuticular components or the phytohormone jasmonic acid. However, recent discoveries demonstrate more direct roles for FAs and their breakdown products in inducing various modes of plant defenses. Both 16- and 18-carbon FAs participate in defense to modulate basal, effector-triggered, and systemic immunity in plants. Studies of FA metabolic mutants also reveal an active signaling role for the cuticle in plant defense. This review summarizes the current knowledge of the involvement of FAs, FA-derived oxylipins, and enzymes catalyzing FA metabolism in plant defense.
Collapse
Affiliation(s)
- Aardra Kachroo
- Department of Plant Pathology, University of Kentucky, Lexington, Kentucky 40546, USA.
| | | |
Collapse
|
32
|
Jung C, Lyou SH, Yeu S, Kim MA, Rhee S, Kim M, Lee JS, Choi YD, Cheong JJ. Microarray-based screening of jasmonate-responsive genes in Arabidopsis thaliana. PLANT CELL REPORTS 2007; 26:1053-63. [PMID: 17297615 DOI: 10.1007/s00299-007-0311-1] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2006] [Revised: 01/09/2007] [Accepted: 01/18/2007] [Indexed: 05/13/2023]
Abstract
Jasmonates comprise a family of plant hormones that regulate gene expression to modulate diverse developmental and defensive processes. To screen a set of jasmonate-responsive Arabidopsis genes, we performed a microarray analysis using an Affymetrix GeneChip containing about 8,300 gene probes synthesized in situ. External treatment with 100 microM methyl jasmonate resulted in significant changes (more than twofold increases or decreases) in the expression levels of 137 genes in the rosette leaves of 5-week-old Arabidopsis plants. Of these, 74 genes were up-regulated, including those involved in jasmonate biosynthesis, defense responses, oxidative stress responses, senescence, and cell wall modification. In contrast, the expression of genes involved in chlorophyll constitution and photosynthesis was down-regulated. Most importantly, the jasmonate treatment significantly reduced transcripts of abscisic acid-responsive cold/drought-stress genes, which suggests that an antagonistic interaction occurs between the jasmonate and abscisic acid signaling pathways in abiotic stress responses. Northern blot analysis of some selected genes revealed that the jasmonate-responsive genes exhibited unique time-course expression patterns after the external jasmonate treatment. Based on the basic clustering of the genes, we established a likely regulation scenario: the genes induced early after treatment are involved in signaling mechanisms that activate or repress other genes, whereas intermediate- and late-accumulating genes are activated by the signaling mechanisms and are subsequently involved in the ultimate jasmonate-modulated cellular responses.
Collapse
Affiliation(s)
- Choonkyun Jung
- School of Agricultural Biotechnology and Center for Agricultural Biomaterials, Seoul National University, Seoul 151-921, Korea
| | | | | | | | | | | | | | | | | |
Collapse
|
33
|
|
34
|
Beckers GJM, Spoel SH. Fine-Tuning Plant Defence Signalling: Salicylate versus Jasmonate. PLANT BIOLOGY (STUTTGART, GERMANY) 2006; 8:1-10. [PMID: 16435264 DOI: 10.1055/s-2005-872705] [Citation(s) in RCA: 231] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Plant defences against pathogens and herbivorous insects form a comprehensive network of interacting signal transduction pathways. The signalling molecules salicylic acid (SA) and jasmonic acid (JA) play important roles in this network. SA is involved in signalling processes providing systemic acquired resistance (SAR), protecting the plant from further infection after an initial pathogen attack. SAR is long-lasting and provides broad spectrum resistance to biotrophic pathogens that feed on a living host cell. The regulatory protein NPR1 is a central positive regulator of SAR. SA-activated NPR1 localizes to the nucleus where it interacts with TGA transcription factors to induce the expression of a large set of pathogenesis-related proteins that contribute to the enhanced state of resistance. In a distinct signalling process, JA protects the plant from insect infestation and necrotrophic pathogens that kill the host cell before feeding. JA activates the regulatory protein COI1 that is part of the E3 ubiquitin ligase-containing complex SCFCOI1, which is thought to derepress JA-responsive genes involved in plant defence. Both synergistic and antagonistic interactions have been observed between SA- and JA-dependent defences. NPR1 has emerged as a critical modulator of cross-talk between the SA and JA signal and is thought to aid in fine tuning defence responses specific to the encountered attacker. Here we review SA- and JA-dependent signal transduction and summarize our current understanding of the molecular mechanisms of cross-talk between these defences.
Collapse
Affiliation(s)
- G J M Beckers
- Plant Biochemistry and Molecular Biology Unit, Department of Plant Physiology, RWTH - Aachen University, Worringerweg 1, 52074 Aachen, Germany
| | | |
Collapse
|
35
|
Isayenkov S, Mrosk C, Stenzel I, Strack D, Hause B. Suppression of allene oxide cyclase in hairy roots of Medicago truncatula reduces jasmonate levels and the degree of mycorrhization with Glomus intraradices. PLANT PHYSIOLOGY 2005; 139:1401-10. [PMID: 16244141 PMCID: PMC1283775 DOI: 10.1104/pp.105.069054] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2005] [Revised: 07/28/2005] [Accepted: 09/12/2005] [Indexed: 05/05/2023]
Abstract
During the symbiotic interaction between Medicago truncatula and the arbuscular mycorrhizal (AM) fungus Glomus intraradices, an endogenous increase in jasmonic acid (JA) occurs. Two full-length cDNAs coding for the JA-biosynthetic enzyme allene oxide cyclase (AOC) from M. truncatula, designated as MtAOC1 and MtAOC2, were cloned and characterized. The AOC protein was localized in plastids and found to occur constitutively in all vascular tissues of M. truncatula. In leaves and roots, MtAOCs are expressed upon JA application. Enhanced expression was also observed during mycorrhization with G. intraradices. A partial suppression of MtAOC expression was achieved in roots following transformation with Agrobacterium rhizogenes harboring the MtAOC1 cDNA in the antisense direction under control of the cauliflower mosaic virus 35S promoter. In comparison to samples transformed with 35SuidA, roots with suppressed MtAOC1 expression exhibited lower JA levels and a remarkable delay in the process of colonization with G. intraradices. Both the mycorrhization rate, quantified by fungal rRNA, and the arbuscule formation, analyzed by the expression level of the AM-specific gene MtPT4, were affected. Staining of fungal material in roots with suppressed MtAOC1 revealed a decreased number of arbuscules, but these did not exhibit an altered structure. Our results indicate a crucial role for JA in the establishment of AM symbiosis.
Collapse
Affiliation(s)
- Stanislav Isayenkov
- Department of Secondary Metabolism , Leibniz Institute of Plant Biochemistry, D-06120 Halle , Germany
| | | | | | | | | |
Collapse
|
36
|
Duan H, Huang MY, Palacio K, Schuler MA. Variations in CYP74B2 (hydroperoxide lyase) gene expression differentially affect hexenal signaling in the Columbia and Landsberg erecta ecotypes of Arabidopsis. PLANT PHYSIOLOGY 2005; 139:1529-44. [PMID: 16258015 PMCID: PMC1283787 DOI: 10.1104/pp.105.067249] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2005] [Revised: 08/01/2005] [Accepted: 08/02/2005] [Indexed: 05/05/2023]
Abstract
The CYP74B2 gene in Arabidopsis (Arabidopsis thaliana) ecotype Columbia (Col) contains a 10-nucleotide deletion in its first exon that causes it to code for a truncated protein not containing the P450 signature typical of other CYP74B subfamily members. Compared to CYP74B2 transcripts in the Landsberg erecta (Ler) ecotype that code for full-length hydroperoxide lyase (HPL) protein, CYP74B2 transcripts in the Col ecotype accumulate at substantially reduced levels. Consistent with the nonfunctional HPL open reading frame in the Col ecotype, in vitro HPL activity analyses using either linoleic acid hydroperoxide or linolenic acid hydroperoxide as substrates show undetectable HPL activity in the Col ecotype and C6 volatile analyses using leaf homogenates show substantially reduced amounts of hexanal and no detectable trans-2-hexenal generated in the Col ecotype. P450-specific microarrays and full-genome oligoarrays have been used to identify the range of other transcripts expressed at different levels in these two ecotypes potentially as a result of these variations in HPL activity. Among the transcripts expressed at significantly lower levels in Col leaves are those coding for enzymes involved in the synthesis of C6 volatiles (LOX2, LOX3), jasmonates (OPR3, AOC), and aliphatic glucosinolates (CYP83A1, CYP79F1, AOP3). Two of the three transcripts coding for aliphatic glucosinolates (CYP83A1, AOP3) are also expressed at significantly lower levels in Col flowers.
Collapse
Affiliation(s)
- Hui Duan
- Department of Cell and Developmental Biology, University of Illinois, Urbana, IL 61801, USA
| | | | | | | |
Collapse
|
37
|
Huang B, Liu X, Wang X, Pi Y, Lin J, Fei J, Sun X, Tang K. Isolation and Expression Profiling of the Pto-Like Gene SsPto from Solanum surattense. Mol Biol 2005. [DOI: 10.1007/s11008-005-0083-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
38
|
Theodoulou FL, Job K, Slocombe SP, Footitt S, Holdsworth M, Baker A, Larson TR, Graham IA. Jasmonic acid levels are reduced in COMATOSE ATP-binding cassette transporter mutants. Implications for transport of jasmonate precursors into peroxisomes. PLANT PHYSIOLOGY 2005; 137:835-40. [PMID: 15761209 PMCID: PMC1065384 DOI: 10.1104/pp.105.059352] [Citation(s) in RCA: 173] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2005] [Revised: 01/13/2005] [Accepted: 01/13/2005] [Indexed: 05/18/2023]
Affiliation(s)
- Frederica L Theodoulou
- Crop Performance and Improvement Division, Rothamsted Research, Harpenden, Hertfordshire AL5 2JQ, United Kingdom.
| | | | | | | | | | | | | | | |
Collapse
|
39
|
Farmer EE, Alméras E, Krishnamurthy V. Jasmonates and related oxylipins in plant responses to pathogenesis and herbivory. CURRENT OPINION IN PLANT BIOLOGY 2003; 6:372-8. [PMID: 12873533 DOI: 10.1016/s1369-5266(03)00045-1] [Citation(s) in RCA: 331] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The vigorous production of oxygenated fatty acids (oxylipins) is a characteristic response to pathogenesis and herbivory, and is often accompanied by the substantial release of small and reactive lipid-fragmentation products. Some oxylipins, most notably those of the jasmonate family, have key roles as potent regulators. Recent advances have been made in understanding oxylipin-regulated signal transduction in response to attack. Much jasmonate signaling takes place via a genetically defined signal network that is linked to the ethylene, auxin, and salicylic acid signal pathways, but a second aspect of jasmonate signaling is emerging. Some jasmonates and several newly discovered cyclopentenone lipids can activate or repress gene expression through the activities of a conserved electrophilic atom group.
Collapse
Affiliation(s)
- Edward E Farmer
- Gene Expression Laboratory, Plant Molecular Biology, 1015 Lausanne, Switzerland.
| | | | | |
Collapse
|
40
|
Abstract
The plant floral scent methyl jasmonate (MeJA) has been identified as a vital cellular regulator that mediates diverse developmental processes and defense responses against biotic and abiotic stresses. The pleiotropic effects of MeJA have raised numerous questions about its regulation for biogenesis and mode of action. Characterization of the gene encoding jasmonic acid carboxyl methyltransferase has provided basic information on the role(s) of this phytohormone in gene-activation control and systemic long-distance signaling. Recent approaches using functional genomics and bioinformatics have identified a whole set of MeJA-responsive genes, and provide insights into how plants use volatile signals to withstand diverse and variable environments.
Collapse
Affiliation(s)
- Jong-Joo Cheong
- School of Agricultural Biotechnology, Seoul National University, Suwon 441-744, South Korea
| | | |
Collapse
|