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Arora R. Glucosinolates and Their Hydrolytic Products-A Love Story of Environmental, Biological, and Chemical Conditions. J AOAC Int 2024; 107:867-875. [PMID: 38913875 DOI: 10.1093/jaoacint/qsae049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 06/13/2024] [Indexed: 06/26/2024]
Abstract
BACKGROUND Glucosinolates (GSL) play an important role in providing defense to plants and helping them to cope with various biotic, as well as abiotic, stresses. Many living beings including humans and animals, including some herbivores, have adapted themselves to use this defense mechanism for their own use. More than 120 glucosinolates are distributed within a large number of plants. Many factors are known to influence the GSL composition in a plant. Among these, cofactors, myrosinase isozymes, heavy metals and the environmental conditions such as light, CO2 and temperature are important in regulation. These factors ensure that different glucosinolate compositions can be produced by the plants, thus impacting the defense mechanism. OBJECTIVE The objective of the current review is to highlight the importance of the factors responsible for affecting glucosinolate composition and concentration. METHODS The review has been compiled using accessible literature from Pubmed, Scopus, and Google scholar. Efforts have been made to restrict the literature to the last 5 years (2018-2023), with some exceptions. RESULTS The current critical review acts as a resource for all the researchers working on these essential compounds. It provides information on the factors that may influence glucosinolate production. It also gives them an opportunity to modify the glucosinolate composition of a plant using the given information. CONCLUSIONS Glucosinolates have long been an ignored class of biomolecule. The plethora of biological activities of the compounds can be useful. Though there are some harmful components such as goitrin and progoitrin, these can be easily removed by modulating some of the factors highlighted in the review. HIGHLIGHTS The current review has covered most of the factors that have the ability to modify glucosinolate composition and concentration. The mechanistic action of these factors has also been discussed using the current available literature.
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Affiliation(s)
- Rohit Arora
- Department of Women and Baby, Sunnybrook Research Institute, 2075 Bayview Ave, North York, Ontario, M4N 3M5, Canada
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2
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Cañizares E, Acién JM, Gumuş BÖ, Vives-Peris V, González-Guzmán M, Arbona V. Interplay between secondary metabolites and plant hormones in silver nitrate-elicited Arabidopsis thaliana plants. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 208:108483. [PMID: 38457948 DOI: 10.1016/j.plaphy.2024.108483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 02/23/2024] [Accepted: 02/29/2024] [Indexed: 03/10/2024]
Abstract
Plants produce a myriad of specialized compounds in response to threats such as pathogens or pests and different abiotic factors. The stress-related induction of specialized metabolites can be mimicked using silver nitrate (AgNO3) as an elicitor, which application in conservation agriculture has gained interest. In Arabidopsis thaliana, AgNO3 triggers the accumulation of indole glucosinolates (IGs) and the phytoalexin camalexin as well as pheylpropanoid-derived defensive metabolites such as coumaroylagmatins and scopoletin through a yet unknown mechanism. In this work, the role of jasmonic (JA) and salicylic acid (SA) signaling in the AgNO3-triggered specialized metabolite production was investigated. To attain this objective, AgNO3, MeJA and SA were applied to A. thaliana lines impaired in JA or SA signaling, or affected in the endogenous levels of IGs and AGs. Metabolomics data indicated that AgNO3 elicitation required an intact JA and SA signaling to elicit the metabolic response, although mutants impaired in hormone signaling retained certain capacity to induce specialized metabolites. In turn, plants overproducing or abolishing IGs production had also an altered hormonal signaling response, both in the accumulation of signaling molecules and the molecular response mechanisms (ORA59, PDF1.2, VSP2 and PR1 gene expression), which pointed out to a crosstalk between defense hormones and specialized metabolites. The present work provides evidence of a crosstalk mechanism between JA and SA underlying AgNO3 defense metabolite elicitation in A. thaliana. In this mechanism, IGs would act as retrograde feedback signals dampening the hormonal response; hence, expanding the signaling molecule concept.
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Affiliation(s)
- Eva Cañizares
- Dept. Biologia, Bioquímica I Ciències Naturals, Universitat Jaume I, Castelló de La Plana, Spain
| | - Juan Manuel Acién
- Dept. Biologia, Bioquímica I Ciències Naturals, Universitat Jaume I, Castelló de La Plana, Spain
| | - Berivan Özlem Gumuş
- Dept. Biologia, Bioquímica I Ciències Naturals, Universitat Jaume I, Castelló de La Plana, Spain
| | - Vicente Vives-Peris
- Dept. Biologia, Bioquímica I Ciències Naturals, Universitat Jaume I, Castelló de La Plana, Spain
| | - Miguel González-Guzmán
- Dept. Biologia, Bioquímica I Ciències Naturals, Universitat Jaume I, Castelló de La Plana, Spain.
| | - Vicent Arbona
- Dept. Biologia, Bioquímica I Ciències Naturals, Universitat Jaume I, Castelló de La Plana, Spain.
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Klatt BK, Wurz A, Herbertsson L, Rundlöf M, Svensson GP, Kuhn J, Vessling S, de La Vega B, Tscharntke T, Clough Y, Smith HG. Seed treatment with clothianidin induces changes in plant metabolism and alters pollinator foraging preferences. ECOTOXICOLOGY (LONDON, ENGLAND) 2023; 32:1247-1256. [PMID: 38062283 PMCID: PMC10724316 DOI: 10.1007/s10646-023-02720-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 11/27/2023] [Indexed: 12/18/2023]
Abstract
Neonicotinoids, systemic insecticides that are distributed into all plant tissues and protect against pests, have become a common part of crop production, but can unintentionally also affect non-target organisms, including pollinators. Such effects can be direct effects from insecticide exposure, but neonicotinoids can affect plant physiology, and effects could therefore also be indirectly mediated by changes in plant phenology, attractiveness and nutritional value. Under controlled greenhouse conditions, we tested if seed treatment with the neonicotinoid clothianidin affected oilseed rape's production of flower resources for bees and the content of the secondary plant products glucosinolates that provide defense against herbivores. Additionally, we tested if seed treatment affected the attractiveness of oilseed rape to flower visiting bumblebees, using outdoor mesocosms. Flowers and leaves of clothianidin-treated plants had different profiles of glucosinolates compared with untreated plants. Bumblebees in mesocosms foraged slightly more on untreated plants. Neither flower timing, flower size nor the production of pollen and nectar differed between treatments, and therefore cannot explain any preference for untreated oilseed rape. We instead propose that this small but significant preference for untreated plants was related to the altered glucosinolate profile caused by clothianidin. Thereby, this study contributes to the understanding of the complex relationships between neonicotinoid-treated crops and pollinator foraging choices, by suggesting a potential mechanistic link by which insecticide treatment can affect insect behavior.
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Affiliation(s)
- Björn K Klatt
- Centre for Environmental and Climate Science, Lund University, 223 62, Lund, Sweden.
- Department of Biology, Lund University, 223 62, Lund, Sweden.
- School of Business, Innovation and Sustainability, Biology & Environmental Sciences, Halmstad University, 30118, Halmstad, Sweden.
| | - Annemarie Wurz
- Centre for Environmental and Climate Science, Lund University, 223 62, Lund, Sweden
- Department of Crop Sciences, Agroecology, University of Göttingen, 37077, Göttingen, Germany
- Conservation Ecology, Department of Biology, Philipps-Universität Marburg, Marburg, Germany
| | - Lina Herbertsson
- Centre for Environmental and Climate Science, Lund University, 223 62, Lund, Sweden
- Department of Biology, Lund University, 223 62, Lund, Sweden
| | - Maj Rundlöf
- Department of Biology, Lund University, 223 62, Lund, Sweden
| | | | - Jürgen Kuhn
- Department of Biology, Lund University, 223 62, Lund, Sweden
| | - Sofie Vessling
- Centre for Environmental and Climate Science, Lund University, 223 62, Lund, Sweden
| | - Bernardo de La Vega
- Centre for Environmental and Climate Science, Lund University, 223 62, Lund, Sweden
- Instituto de Biologia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Teja Tscharntke
- Department of Crop Sciences, Agroecology, University of Göttingen, 37077, Göttingen, Germany
| | - Yann Clough
- Centre for Environmental and Climate Science, Lund University, 223 62, Lund, Sweden
| | - Henrik G Smith
- Centre for Environmental and Climate Science, Lund University, 223 62, Lund, Sweden
- Department of Biology, Lund University, 223 62, Lund, Sweden
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4
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Qin H, King GJ, Borpatragohain P, Zou J. Developing multifunctional crops by engineering Brassicaceae glucosinolate pathways. PLANT COMMUNICATIONS 2023:100565. [PMID: 36823985 PMCID: PMC10363516 DOI: 10.1016/j.xplc.2023.100565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 02/15/2023] [Accepted: 02/20/2023] [Indexed: 06/18/2023]
Abstract
Glucosinolates (GSLs), found mainly in species of the Brassicaceae family, are one of the most well-studied classes of secondary metabolites. Produced by the action of myrosinase on GSLs, GSL-derived hydrolysis products (GHPs) primarily defend against biotic stress in planta. They also significantly affect the quality of crop products, with a subset of GHPs contributing unique food flavors and multiple therapeutic benefits or causing disagreeable food odors and health risks. Here, we explore the potential of these bioactive functions, which could be exploited for future sustainable agriculture. We first summarize our accumulated understanding of GSL diversity and distribution across representative Brassicaceae species. We then systematically discuss and evaluate the potential of exploited and unutilized genes involved in GSL biosynthesis, transport, and hydrolysis as candidate GSL engineering targets. Benefiting from available information on GSL and GHP functions, we explore options for multifunctional Brassicaceae crop ideotypes to meet future demand for food diversification and sustainable crop production. An integrated roadmap is subsequently proposed to guide ideotype development, in which maximization of beneficial effects and minimization of detrimental effects of GHPs could be combined and associated with various end uses. Based on several use-case examples, we discuss advantages and limitations of available biotechnological approaches that may contribute to effective deployment and could provide novel insights for optimization of future GSL engineering.
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Affiliation(s)
- Han Qin
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
| | - Graham J King
- Southern Cross Plant Science, Southern Cross University, Lismore, NSW, Australia
| | | | - Jun Zou
- National Key Laboratory of Crop Genetic Improvement, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
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Yi SY, Lee M, Park SK, Lu L, Lee G, Kim SG, Kang SY, Lim YP. Jasmonate regulates plant resistance to Pectobacterium brasiliense by inducing indole glucosinolate biosynthesis. FRONTIERS IN PLANT SCIENCE 2022; 13:964092. [PMID: 36247644 PMCID: PMC9559233 DOI: 10.3389/fpls.2022.964092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Accepted: 09/08/2022] [Indexed: 05/31/2023]
Abstract
Pectobacterium brasiliense (P. brasiliense) is a necrotrophic bacterium that causes the soft rot disease in Brassica rapa. However, the mechanisms underlying plant immune responses against necrotrophic bacterial pathogens with a broad host range are still not well understood. Using a flg22-triggered seedling growth inhibition (SGI) assay with 455 Brassica rapa inbred lines, we selected six B. rapa flagellin-insensitive lines (Brfin2-7) and three B. rapa flagellin-sensitive lines (Brfs1-3). Brfin lines showed compromised flg22-induced immune responses (oxidative burst, mitogen-activated protein kinase (MAPK) activation, and seedling growth inhibition) compared to the control line R-o-18; nevertheless, they were resistant to P. brasiliense. To explain this, we analyzed the phytohormone content and found that most Brfin lines had higher P. brasiliense-induced jasmonic acid (JA) than Brfs lines. Moreover, MeJA pretreatment enhanced the resistance of B. rapa to P. brasiliense. To explain the correlation between the resistance of Brfin lines to P. brasiliense and activated JA signaling, we analyzed pathogen-induced glucosinolate (GS) content in B. rapa. Notably, in Brfin7, the neoglucobrassicin (NGBS) content among indole glucosinolates (IGS) was significantly higher than that in Brfs2 following P. brasiliense inoculation, and genes involved in IGSs biosynthesis were also highly expressed. Furthermore, almost all Brfin lines with high JA levels and resistance to P. brasiliense had higher P. brasiliense-induced NGBS levels than Brfs lines. Thus, our results show that activated JA-mediated signaling attenuates flg22-triggered immunity but enhances resistance to P. brasiliense by inducing indole glucosinolate biosynthesis in Brassica rapa. This study provides novel insights into the role of JA-mediated defense against necrotrophic bacterial pathogens within a broad host range.
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Affiliation(s)
- So Young Yi
- Institute of Agricultural Science, Chungnam National University, Daejeon, South Korea
- Research Center of Crop Breeding for Omics and Artificial Intelligence, Kongju National University, Yesan, South Korea
| | - Myungjin Lee
- Institute of Agricultural Science, Chungnam National University, Daejeon, South Korea
| | - Sun Kyu Park
- Molecular Genetics and Genomics Laboratory, Department of Horticulture, Chungnam National University, Daejeon, South Korea
| | - Lu Lu
- Molecular Genetics and Genomics Laboratory, Department of Horticulture, Chungnam National University, Daejeon, South Korea
| | - Gisuk Lee
- Department of Biological Sciences, Korea Advanced Institute for Science and Technology, Daejeon, South Korea
| | - Sang-Gyu Kim
- Department of Biological Sciences, Korea Advanced Institute for Science and Technology, Daejeon, South Korea
| | - Si-Yong Kang
- Department of Horticulture, College of Industrial Sciences, Kongju National University, Yesan, South Korea
- Research Center of Crop Breeding for Omics and Artificial Intelligence, Kongju National University, Yesan, South Korea
| | - Yong Pyo Lim
- Molecular Genetics and Genomics Laboratory, Department of Horticulture, Chungnam National University, Daejeon, South Korea
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Duarte-Sierra A, Forney CF, Thomas M, Angers P, Arul J. Phytochemical Enhancement in Broccoli Florets after Harvest by Controlled Doses of Ozone. Foods 2022; 11:foods11152195. [PMID: 35892781 PMCID: PMC9329930 DOI: 10.3390/foods11152195] [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: 07/04/2022] [Revised: 07/19/2022] [Accepted: 07/20/2022] [Indexed: 11/16/2022] Open
Abstract
The objective of this work was to examine the effect of controlled doses of O3 (0, 5 µL L−1 of O3 for 60 min, and 5 µL L−1 of O3 for 720 min) on the quality and phytochemical content of broccoli florets during postharvest storage. The optimal dose was found at 5 µL L−1 of O3 for 60 min, from the color retention of broccoli florets exposed to the gas treatment. Overall, the antioxidant capacity of the florets was significantly affected by both doses of O3 compared to the non-exposed florets. The profile of glucosinolates was determined for up to 14 days in broccoli florets stored at 4 °C by LC-MS. The amount of total glucobrassicins and total hydroxy-cinnamates in florets significantly (p ≤ 0.05) improved by the application of 5 µL L−1 of O3 for 60 min compared to non-treated florets. The up-regulation of genes of the tryptophan-derived glucosinolate pathway was observed immediately after both treatments. The gene expression of CYP79A2 and CYP79B3 in broccoli was significantly higher in broccoli florets exposed to 5 µL L−1 of O3 for 720 min compared to non-exposed florets. Although enhancement of secondary metabolites can be achieved by the fumigation of broccoli florets with low doses of ozone, quality parameters, particularly weight loss, can be compromised.
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Affiliation(s)
- Arturo Duarte-Sierra
- Food Science Department, Laval University, Quebec, QC G1V 0A6, Canada; (M.T.); (P.A.); (J.A.)
- Institute on Nutrition and Functional Foods (INAF), Laval University, Quebec, QC G1V 0A6, Canada
- Center for Research in Plant Innovation (CRIV), Laval University, Quebec, QC G1V 0A6, Canada
- Correspondence:
| | - Charles F. Forney
- Kentville Research and Development Centre, Agriculture and Agri-Food Canada, 32 Main Street, Kentville, NS B4N 1J5, Canada;
| | - Minty Thomas
- Food Science Department, Laval University, Quebec, QC G1V 0A6, Canada; (M.T.); (P.A.); (J.A.)
| | - Paul Angers
- Food Science Department, Laval University, Quebec, QC G1V 0A6, Canada; (M.T.); (P.A.); (J.A.)
- Institute on Nutrition and Functional Foods (INAF), Laval University, Quebec, QC G1V 0A6, Canada
| | - Joseph Arul
- Food Science Department, Laval University, Quebec, QC G1V 0A6, Canada; (M.T.); (P.A.); (J.A.)
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Ortega-Hernández E, Antunes-Ricardo M, Cisneros-Zevallos L, Jacobo-Velázquez DA. Selenium, Sulfur, and Methyl Jasmonate Treatments Improve the Accumulation of Lutein and Glucosinolates in Kale Sprouts. PLANTS (BASEL, SWITZERLAND) 2022; 11:plants11091271. [PMID: 35567272 PMCID: PMC9100039 DOI: 10.3390/plants11091271] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 04/24/2022] [Accepted: 05/02/2022] [Indexed: 06/12/2023]
Abstract
Kale sprouts contain health-promoting compounds that could be increased by applying plant nutrients or exogenous phytohormones during pre-harvest. The effects of selenium (Se), sulfur (S), and methyl jasmonate (MeJA) on lutein, glucosinolate, and phenolic accumulation were assessed in kale sprouts. Red Russian and Dwarf Green kale were chamber-grown using different treatment concentrations of Se (10, 20, 40 mg/L), S (30, 60, 120 mg/L), and MeJA (25, 50, 100 µM). Sprouts were harvested every 24 h for 7 days to identify and quantify phytochemicals. The highest lutein accumulation occurred 7 days after S 120 mg/L (178%) and Se 40 mg/L (199%) treatments in Red Russian and Dwarf Green kale sprouts, respectively. MeJA treatment decreased the level of most phenolic levels, except for kaempferol and quercetin, where increases were higher than 70% for both varieties when treated with MeJA 25 µM. The most effective treatment for glucosinolate accumulation was S 120 mg/L in the Red Russian kale variety at 7 days of germination, increasing glucoraphanin (262.4%), glucoerucin (510.8%), 4-methoxy-glucobrassicin (430.7%), and glucoiberin (1150%). Results show that kales treated with Se, S, and MeJA could be used as a functional food for fresh consumption or as raw materials for different industrial applications.
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Affiliation(s)
- Erika Ortega-Hernández
- Tecnologico de Monterrey, The Institute for Obesity Research, Ave. Eugenio Garza Sada 2501, Monterrey 64849, N.L., Mexico;
| | - Marilena Antunes-Ricardo
- Tecnologico de Monterrey, The Institute for Obesity Research, Ave. Eugenio Garza Sada 2501, Monterrey 64849, N.L., Mexico;
| | - Luis Cisneros-Zevallos
- Department of Horticultural Sciences, Texas A&M University, College Station, TX 77843, USA;
| | - Daniel A. Jacobo-Velázquez
- Tecnologico de Monterrey, The Institute for Obesity Research, Ave. General Ramón Corona 2514, Zapopan 45201, Jal, Mexico
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Liu Z, Wang H, Lv J, Luo S, Hu L, Wang J, Li L, Zhang G, Xie J, Yu J. Effects of Plant Hormones, Metal Ions, Salinity, Sugar, and Chemicals Pollution on Glucosinolate Biosynthesis in Cruciferous Plant. FRONTIERS IN PLANT SCIENCE 2022; 13:856442. [PMID: 35574082 PMCID: PMC9096887 DOI: 10.3389/fpls.2022.856442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 03/17/2022] [Indexed: 06/15/2023]
Abstract
Cruciferous vegetable crops are grown widely around the world, which supply a multitude of health-related micronutrients, phytochemicals, and antioxidant compounds. Glucosinolates (GSLs) are specialized metabolites found widely in cruciferous vegetables, which are not only related to flavor formation but also have anti-cancer, disease-resistance, and insect-resistance properties. The content and components of GSLs in the Cruciferae are not only related to genotypes and environmental factors but also are influenced by hormones, plant growth regulators, and mineral elements. This review discusses the effects of different exogenous substances on the GSL content and composition, and analyzes the molecular mechanism by which these substances regulate the biosynthesis of GSLs. Based on the current research status, future research directions are also proposed.
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Affiliation(s)
- Zeci Liu
- College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Huiping Wang
- College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Jian Lv
- College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Shilei Luo
- College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Linli Hu
- College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Jie Wang
- College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Lushan Li
- College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Guobin Zhang
- College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Jianming Xie
- College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Jihua Yu
- College of Horticulture, Gansu Agricultural University, Lanzhou, China
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Zhang T, Liu R, Zheng J, Wang Z, Gao T, Qin M, Hu X, Wang Y, Yang S, Li T. Insights into glucosinolate accumulation and metabolic pathways in Isatis indigotica Fort. BMC PLANT BIOLOGY 2022; 22:78. [PMID: 35193497 PMCID: PMC8862337 DOI: 10.1186/s12870-022-03455-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Accepted: 02/03/2022] [Indexed: 05/19/2023]
Abstract
BACKGROUND Glucosinolates (GSLs) play important roles in defending against exogenous damage and regulating physiological activities in plants. However, GSL accumulation patterns and molecular regulation mechanisms are largely unknown in Isatis indigotica Fort. RESULTS Ten GSLs were identified in I. indigotica, and the dominant GSLs were epiprogoitrin (EPI) and indole-3-methyl GSL (I3M), followed by progoitrin (PRO) and gluconapin (GNA). The total GSL content was highest (over 20 μmol/g) in reproductive organs, lowest (less than 1.0 μmol/g) in mature organs, and medium in fresh leaves (2.6 μmol/g) and stems (1.5 μmol/g). In the seed germination process, the total GSL content decreased from 27.2 μmol/g (of seeds) to 2.7 μmol/g (on the 120th day) and then increased to 4.0 μmol/g (180th day). However, the content of indole GSL increased rapidly in the first week after germination and fluctuated between 1.13 μmol/g (28th day) and 2.82 μmol/g (150th day). Under the different elicitor treatments, the total GSL content increased significantly, ranging from 2.9-fold (mechanical damage, 3 h) to 10.7-fold (MeJA, 6 h). Moreover, 132 genes were involved in GSL metabolic pathways. Among them, no homologs of AtCYP79F2 and AtMAM3 were identified, leading to a distinctive GSL profile in I. indigotica. Furthermore, most genes involved in the GSL metabolic pathway were derived from tandem duplication, followed by dispersed duplication and segmental duplication. Purifying selection was observed, although some genes underwent relaxed selection. In addition, three tandem-arrayed GSL-OH genes showed different expression patterns, suggesting possible subfunctionalization during evolution. CONCLUSIONS Ten different GSLs with their accumulation patterns and 132 genes involved in the GSL metabolic pathway were explored, which laid a foundation for the study of GSL metabolism and regulatory mechanisms in I. indigotica.
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Affiliation(s)
- Tianyi Zhang
- Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry (Shaanxi Normal University), The Ministry of Education, Xi'an, Shaanxi, 710119, People's Republic of China
| | - Rui Liu
- National Engineering Laboratory for Resources Development of Endangered Crude Drugs in Northwest China, College of Life Sciences, Shaanxi Normal University, Xi'an, Shaanxi, 710119, People's Republic of China
| | - Jinyu Zheng
- Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry (Shaanxi Normal University), The Ministry of Education, Xi'an, Shaanxi, 710119, People's Republic of China
| | - Zirong Wang
- Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry (Shaanxi Normal University), The Ministry of Education, Xi'an, Shaanxi, 710119, People's Republic of China
| | - Tian'e Gao
- Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry (Shaanxi Normal University), The Ministry of Education, Xi'an, Shaanxi, 710119, People's Republic of China
| | - Miaomiao Qin
- Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry (Shaanxi Normal University), The Ministry of Education, Xi'an, Shaanxi, 710119, People's Republic of China
| | - Xiangyang Hu
- Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry (Shaanxi Normal University), The Ministry of Education, Xi'an, Shaanxi, 710119, People's Republic of China
| | - Yuanyuan Wang
- Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry (Shaanxi Normal University), The Ministry of Education, Xi'an, Shaanxi, 710119, People's Republic of China
| | - Shu Yang
- Shaanxi Engineering Research Centre for Conservation and Utilization of Botanical Resources, Xi'an Botanical Garden of Shaanxi Province (Institute of Botany of Shaanxi Province), Xi'an, Shaanxi, 710000, People's Republic of China
| | - Tao Li
- Key Laboratory of Medicinal Resources and Natural Pharmaceutical Chemistry (Shaanxi Normal University), The Ministry of Education, Xi'an, Shaanxi, 710119, People's Republic of China.
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Glatt H, Engst W, Florian S, Schreiner M, Baasanjav-Gerber C. Feeding Brassica vegetables to rats leads to the formation of characteristic DNA adducts (from 1-methoxy-3-indolylmethyl glucosinolate) in many tissues. Arch Toxicol 2022; 96:933-944. [PMID: 34997255 PMCID: PMC8850215 DOI: 10.1007/s00204-021-03216-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Accepted: 12/23/2021] [Indexed: 11/26/2022]
Abstract
Juices of Brassica vegetables are mutagenic and form characteristic DNA adducts in bacteria and mammalian cells. In this study, we examined whether such adducts are also formed in vivo in animal models. Rats fed raw broccoli ad libitum in addition to normal laboratory chow for 5 weeks showed one major adduct spot and sometimes an additional minor adduct spot in liver, kidney, lung, blood and the gastrointestinal tract, as determined by 32P-postlabelling/thin-layer chromatography. Adducts with the same chromatographic properties were formed when herring sperm DNA (or dG-3’-phosphate) was incubated with 1-methoxy-3-indolylmethyl glucosinolate (phytochemical present in Brassica plants), in the presence of myrosinase (plant enzyme that hydrolyses glucosinolates to bioactive breakdown products). UPLC–MS/MS analysis corroborated this finding: 1-Methoxy-3-indolylmethyl-substituted purine nucleosides were detected in the hepatic DNA of broccoli-fed animals, but not in control animals. Feeding raw cauliflower led to the formation of the same adducts. When steamed rather than raw broccoli was used, the adduct levels were essentially unchanged in liver and jejunum, but elevated in large intestine. Due to inactivation of myrosinase by the steaming, higher levels of the glucosinolates may have reached the large bowl to be activated by glucosidases from intestinal bacteria. In conclusion, the consumption of common Brassica vegetables can lead to the formation of substantial levels of DNA adducts in animal models. The adducts can be attributed to a specific phytochemical, neoglucobrassicin (1-methoxy-3-indolylmethyl glucosinolate).
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Affiliation(s)
- Hansruedi Glatt
- German Institute of Human Nutrition (DIfE), Potsdam-Rehbrücke, 14558, Nuthetal, Germany.
- Department Food Safety, Federal Institute for Risk Assessment (BfR), Max-Dohrn-Strasse 8-10, 10589, Berlin, Germany.
| | - Wolfram Engst
- German Institute of Human Nutrition (DIfE), Potsdam-Rehbrücke, 14558, Nuthetal, Germany
| | - Simone Florian
- German Institute of Human Nutrition (DIfE), Potsdam-Rehbrücke, 14558, Nuthetal, Germany
| | - Monika Schreiner
- Leibniz Institute of Vegetable and Ornamental Crops (IGZ), 14979, Grossbeeren, Germany
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11
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Badenes-Pérez FR, Cartea ME. Glucosinolate Induction and Resistance to the Cabbage Moth, Mamestra brassicae, Differs among Kale Genotypes with High and Low Content of Sinigrin and Glucobrassicin. PLANTS 2021; 10:plants10091951. [PMID: 34579483 PMCID: PMC8469716 DOI: 10.3390/plants10091951] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 09/15/2021] [Accepted: 09/16/2021] [Indexed: 11/16/2022]
Abstract
The cabbage moth, Mamestra brassicae L. (Lepidoptera: Noctuidae), is a generalist insect pest of cruciferous crops. We tested glucosinolate induction by jasmonic acid (JA) and salicylic acid (SA), and by these phytohormones combined with feeding by M. brassicae larvae in four genotypes of kale, Brassica oleracea L. var. acephala (Brassicaceae). The genotypes tested had high glucobrassicin (genotype HGBS), low glucobrassicin (genotype LGBS), high sinigrin (genotype HSIN), and low sinigrin content (genotype LSIN). Application of JA increased indolic and total glucosinolate content in all kale genotypes 1, 3, and 9 days after treatment. For SA-treated plants, glucosinolate induction varied depending on the number of days after treatment and the genotype. Overall, herbivory by M. brassicae accentuated and attenuated the effects of JA and SA, respectively, on plant glucosinolate content. Larvae of M. brassicae gained less weight on leaves from plants treated with JA compared to leaves from control plants and plants treated with SA. In bioassays with leaf discs, a significant reduction of defoliation only occurred in JA-treated plants of the HSIN genotype. This research shows that previous herbivory alters the susceptibility of kale to M. brassicae and that induction of glucosinolates varies among kale genotypes differing in their glucosinolate content.
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Affiliation(s)
| | - María Elena Cartea
- Misión Biológica de Galicia, Consejo Superior de Investigaciones Científicas, 36080 Pontevedra, Spain;
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12
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Manivannan A, Israni B, Luck K, Götz M, Seibel E, Easson MLAE, Kirsch R, Reichelt M, Stein B, Winter S, Gershenzon J, Vassão DG. Identification of a Sulfatase that Detoxifies Glucosinolates in the Phloem-Feeding Insect Bemisia tabaci and Prefers Indolic Glucosinolates. FRONTIERS IN PLANT SCIENCE 2021; 12:671286. [PMID: 34149771 PMCID: PMC8212129 DOI: 10.3389/fpls.2021.671286] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 04/21/2021] [Indexed: 06/12/2023]
Abstract
Cruciferous plants in the order Brassicales defend themselves from herbivory using glucosinolates: sulfur-containing pro-toxic metabolites that are activated by hydrolysis to form compounds, such as isothiocyanates, which are toxic to insects and other organisms. Some herbivores are known to circumvent glucosinolate activation with glucosinolate sulfatases (GSSs), enzymes that convert glucosinolates into inactive desulfoglucosinolates. This strategy is a major glucosinolate detoxification pathway in a phloem-feeding insect, the silverleaf whitefly Bemisia tabaci, a serious agricultural pest of cruciferous vegetables. In this study, we identified and characterized an enzyme responsible for glucosinolate desulfation in the globally distributed B. tabaci species MEAM1. In in vitro assays, this sulfatase showed a clear preference for indolic glucosinolates compared with aliphatic glucosinolates, consistent with the greater representation of desulfated indolic glucosinolates in honeydew. B. tabaci might use this detoxification strategy specifically against indolic glucosinolates since plants may preferentially deploy indolic glucosinolates against phloem-feeding insects. In vivo silencing of the expression of the B. tabaci GSS gene via RNA interference led to lower levels of desulfoglucosinolates in honeydew. Our findings expand the knowledge on the biochemistry of glucosinolate detoxification in phloem-feeding insects and suggest how detoxification pathways might facilitate plant colonization in a generalist herbivore.
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Affiliation(s)
| | - Bhawana Israni
- Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Katrin Luck
- Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Monika Götz
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Elena Seibel
- Max Planck Institute for Chemical Ecology, Jena, Germany
| | | | - Roy Kirsch
- Max Planck Institute for Chemical Ecology, Jena, Germany
| | | | - Beate Stein
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
| | - Stephan Winter
- Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Braunschweig, Germany
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13
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Zhang Q, Dandena H, McCausland M, Liu H, Liu Z, Xu W, Li G. Genetic Analysis of a Horizontal Resistance Locus BLMR2 in Brassica napus. FRONTIERS IN PLANT SCIENCE 2021; 12:663868. [PMID: 34113364 PMCID: PMC8186441 DOI: 10.3389/fpls.2021.663868] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 04/12/2021] [Indexed: 05/25/2023]
Abstract
Leptosphaeria maculans causes blackleg disease in Brassica napus. The blackleg disease is mainly controlled by resistance genes in B. napus. Previous studies have shown that the blackleg resistant BLMR2 locus that conferred horizontal resistance under field conditions, is located on chromosome A10 of B. napus. The purpose of this study is to fine map this locus and hence identify a candidate gene underlying horizontal resistance. The spectrum of resistance to L. maculans isolates of the resistance locus BLMR2 was analyzed using near isogenic lines, resistant, and susceptible cultivars. The results showed that this locus was horizontally resistant to all isolates tested. Sequence characterized amplified regions (SCAR), simple sequence repeats (SSR), and single nucleotide polymorphism (SNP) markers were developed in the chromosome region of BLMR2 and a fine genetic map was constructed. Two molecular markers narrowed BLMR2 in a 53.37 kb region where six genes were annotated. Among the six annotated genes, BnaA10g11280D/BnaA10g11290D encoding a cytochrome P450 protein were predicted as the candidate of BLMR2. Based on the profiling of pathogen induced transcriptome, three expressed genes in the six annotated genes were identified while only cytochrome P450 showed upregulation. The candidate corresponds to the gene involved in the indole glucosinolate biosynthesis pathway and plant basal defense in Arabidopsis thaliana. The molecular markers identified in this study will allow the quick incorporation of the BLMR2 allele in rapeseed cultivars to enhance blackleg resistance.
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14
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Mitreiter S, Gigolashvili T. Regulation of glucosinolate biosynthesis. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:70-91. [PMID: 33313802 DOI: 10.1093/jxb/eraa479] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 10/14/2020] [Indexed: 05/18/2023]
Abstract
Glucosinolates are secondary defense metabolites produced by plants of the order Brassicales, which includes the model species Arabidopsis and many crop species. In the past 13 years, the regulation of glucosinolate synthesis in plants has been intensively studied, with recent research revealing complex molecular mechanisms that connect glucosinolate production with responses to other central pathways. In this review, we discuss how the regulation of glucosinolate biosynthesis is ecologically relevant for plants, how it is controlled by transcription factors, and how this transcriptional machinery interacts with hormonal, environmental, and epigenetic mechanisms. We present the central players in glucosinolate regulation, MYB and basic helix-loop-helix transcription factors, as well as the plant hormone jasmonate, which together with other hormones and environmental signals allow the coordinated and rapid regulation of glucosinolate genes. Furthermore, we highlight the regulatory connections between glucosinolates, auxin, and sulfur metabolism and discuss emerging insights and open questions on the regulation of glucosinolate biosynthesis.
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Affiliation(s)
- Simon Mitreiter
- Institute for Plant Sciences and Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, Cologne, Germany
| | - Tamara Gigolashvili
- Institute for Plant Sciences and Cluster of Excellence on Plant Sciences (CEPLAS), University of Cologne, Cologne, Germany
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15
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Sánchez-Pujante PJ, Gionfriddo M, Sabater-Jara AB, Almagro L, Pedreño MA, Diaz-Vivancos P. Enhanced bioactive compound production in broccoli cells due to coronatine and methyl jasmonate is linked to antioxidative metabolism. JOURNAL OF PLANT PHYSIOLOGY 2020; 248:153136. [PMID: 32120144 DOI: 10.1016/j.jplph.2020.153136] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 02/06/2020] [Accepted: 02/06/2020] [Indexed: 06/10/2023]
Abstract
Elicited broccoli suspension-cultured cells (SCC) provide a useful system for obtaining bioactive compounds, including glucosinolates (GS) and phenolic compounds (PCs). In this work, coronatine (Cor) and methyl jasmonate (MJ) were used to increase the bioactive compound production in broccoli SCC. Although the use of Cor and MJ in secondary metabolite production has already been described, information concerning how elicitors affect cell metabolism is scarce. It has been suggested that Cor and MJ trigger defence reactions affecting the antioxidative metabolism. In the current study, the concentration of 0.5 μM Cor was the most effective treatment for increasing both the total antioxidant capacity (measured as ferulic acid equivalents) and glucosinolate content in broccoli SCC. The elicited broccoli SCC also showed higher polyphenol oxidase activity than the control cells. Elicitation altered the antioxidative metabolism of broccoli SCC, which displayed biochemical changes in antioxidant enzymes, a decrease in the glutathione redox state and an increase in lipid peroxidation levels. Furthermore, we studied the effect of elicitation on the protein profile and observed an induction of defence-related proteins. All of these findings suggest that elicitation not only increases bioactive compound production, but it also leads to mild oxidative stress in broccoli SCC that could be an important factor triggering the production of these compounds.
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Affiliation(s)
| | - Matteo Gionfriddo
- Department of Medicine, Unit of Food Science and Human Nutrition, Campus Bio-Medico University of Rome, via Álvaro del Portillo 21, 00128, Rome, Italy
| | - Ana Belén Sabater-Jara
- Department of Plant Biology, Faculty of Biology, University of Murcia, Campus de Espinardo, E-30100 Murcia Spain
| | - Lorena Almagro
- Department of Plant Biology, Faculty of Biology, University of Murcia, Campus de Espinardo, E-30100 Murcia Spain
| | - María Angeles Pedreño
- Department of Plant Biology, Faculty of Biology, University of Murcia, Campus de Espinardo, E-30100 Murcia Spain
| | - Pedro Diaz-Vivancos
- Department of Plant Biology, Faculty of Biology, University of Murcia, Campus de Espinardo, E-30100 Murcia Spain.
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16
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Hassini I, Rios JJ, Garcia-Ibañez P, Baenas N, Carvajal M, Moreno DA. Comparative effect of elicitors on the physiology and secondary metabolites in broccoli plants. JOURNAL OF PLANT PHYSIOLOGY 2019; 239:1-9. [PMID: 31177025 DOI: 10.1016/j.jplph.2019.05.008] [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: 02/26/2019] [Revised: 04/24/2019] [Accepted: 05/13/2019] [Indexed: 06/09/2023]
Abstract
Elicitation is an economic and sustainable technique for increasing the content of secondary metabolites, mainly bioactive compounds, in plants grown for better human nutrition. The aim of this study was to compare the physiological responses (water relations and mineral nutrition) and the enrichment in glucosinolates (GLSs) and phenolic compounds of broccoli plants (Brassica oleracea L. var. italica) receiving different elicitation treatments. The treatments involved the priming of seeds with KCl and the exposure of plants to elicitors, including K2SO4 and NaCl solutions and foliar sprays of methyl jasmonate (MeJA), salicylic acid (SA), and methionine (Met). The physiological response of the plants in terms of root hydraulic conductance was improved by priming with KCl and elicitation with MeJA or Met. Foliar application of Met significantly increased the plant biomass and enhanced mineral nutrition. In general, all treatments increased the accumulation of indole GLSs, but K2SO4 and MeJA gave the best response and MeJA also favored the formation of a newly described compound, cinnamic-GLS, in the plants. Also, the use of Met and SA as elicitors and the supply of K2SO4 increased the abundance of phenolic compounds; K2SO4 also enhanced growth but did not alter the water relations or the accumulation of mineral nutrients. Therefore, although the response to elicitation was positive, with an increased content of bioactive compounds, regulation of the water relations and of the mineral status of the broccoli plants was critical to maintain the yield.
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Affiliation(s)
- Ismahen Hassini
- Department of Life Sciences. Faculty of Sciences of Bizerte. University of Carthage 7021 Zarzouna, Tunisia
| | - Juan J Rios
- Group of Aquaporins. Plant Nutrition Department, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC). Campus Universitario de Espinardo - 25, 30100 Murcia, Spain
| | - Paula Garcia-Ibañez
- Group of Aquaporins. Plant Nutrition Department, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC). Campus Universitario de Espinardo - 25, 30100 Murcia, Spain
| | - Nieves Baenas
- Phytochemistry and Healthy Foods Lab. Food Science and Technology Department, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC). Campus Universitario de Espinardo - 25, 30100 Murcia, Spain
| | - Micaela Carvajal
- Group of Aquaporins. Plant Nutrition Department, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC). Campus Universitario de Espinardo - 25, 30100 Murcia, Spain.
| | - Diego A Moreno
- Phytochemistry and Healthy Foods Lab. Food Science and Technology Department, Centro de Edafología y Biología Aplicada del Segura (CEBAS-CSIC). Campus Universitario de Espinardo - 25, 30100 Murcia, Spain
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17
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Chiu YC, Matak K, Ku KM. Methyl jasmonate treated broccoli: Impact on the production of glucosinolates and consumer preferences. Food Chem 2019; 299:125099. [PMID: 31299513 DOI: 10.1016/j.foodchem.2019.125099] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 06/27/2019] [Accepted: 06/28/2019] [Indexed: 01/04/2023]
Abstract
Applying methyl jasmonate can mimic the defense response to insect damage in broccoli and enhances the production of glucosinolates, especially inducible indolyl GS-neoglucobrassicin. Previous studies have suggested that glucosinolates and their hydrolysis products are anti-carcinogenic. Therefore, MeJA treatment may increase the nutritional quality of broccoli. However, there are few reports on the sensory evaluation and consumer acceptance of MeJA-treated broccoli. In this study, an untrained consumer panel could not detect any taste differences between steamed MeJA-treated and untreated broccoli, even though the steamed MeJA-treated broccoli contained 50% more glucosinolates than untreated broccoli. The partial least square-regression model suggested that neoglucobrassicin-derived hydrolysis compounds were the major metabolites that determined overall preference for raw MeJA-treated broccoli potentially due to their potential negative sensory qualities. The results imply that MeJA treatment can increase the nutritional quality of broccoli without sacrificing taste in precooked meals or frozen vegetables.
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Affiliation(s)
- Yu-Chun Chiu
- Division of Plant and Soil Sciences, West Virginia University, Morgantown, WV 26506, USA
| | - Kristen Matak
- Division of Animal and Nutritional Sciences, West Virginia University, Morgantown, WV 26506, USA
| | - Kang-Mo Ku
- Division of Plant and Soil Sciences, West Virginia University, Morgantown, WV 26506, USA; Department of Horticulture, College of Agriculture and Life Sciences, Chonnam National University, Gwangju 61886, Republic of Korea.
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18
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1-Methoxy-3-indolylmethyl DNA adducts in six tissues, and blood protein adducts, in mice under pak choi diet: time course and persistence. Arch Toxicol 2019; 93:1515-1527. [PMID: 30993378 DOI: 10.1007/s00204-019-02452-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 04/09/2019] [Indexed: 10/27/2022]
Abstract
We previously showed that purified 1-methoxy-3-indolylmethyl (1-MIM) glucosinolate, a secondary plant metabolite in Brassica species, is mutagenic in various in vitro systems and forms DNA and protein adducts in mouse models. In the present study, we administered 1-MIM glucosinolate in a natural matrix to mice, by feeding a diet containing pak choi powder and extract. Groups of animals were killed after 1, 2, 4 and 8 days of pak choi diet, directly or, in the case of the 8-day treatment, after 0, 8 and 16 days of recovery with pak choi-free diet. DNA adducts [N2-(1-MIM)-dG, N6-(1-MIM)-dA] in six tissues, as well as protein adducts [τN-(1-MIM)-His] in serum albumin (SA) and hemoglobin (Hb) were determined using UPLC-MS/MS with isotopically labeled internal standards. None of the samples from the 12 control animals under standard diet contained any 1-MIM adducts. All groups receiving pak choi diet showed DNA adducts in all six tissues (exception: lung of mice treated for a single day) as well as SA and Hb adducts. During the feeding period, all adduct levels continuously increased until day 8 (in the jejunum until day 4). During the 14-day recovery period, N2-(1-MIM)-dG in liver, kidney, lung, jejunum, cecum and colon decreased to 52, 41, 59, 11, 7 and 2%, respectively, of the peak level. The time course of N6-(1-MIM)-dA was similar. Immunohistochemical analyses indicated that cell turnover is a major mechanism of DNA adduct elimination in the intestine. In the same recovery period, protein adducts decreased more rapidly in SA than in Hb, to 0.7 and 37%, respectively, of the peak level, consistent with the differential turnover of these proteins. In conclusion, the pak choi diet lead to the formation of high levels of adducts in mice. Cell and protein turnover was a major mechanism of adduct elimination, at least in gut and blood.
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19
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Chiu YC, Juvik JA, Ku KM. Targeted Metabolomic and Transcriptomic Analyses of "Red Russian" Kale (Brassicae napus var. pabularia) Following Methyl Jasmonate Treatment and Larval Infestation by the Cabbage Looper (Trichoplusia ni Hübner). Int J Mol Sci 2018; 19:E1058. [PMID: 29614820 PMCID: PMC5979517 DOI: 10.3390/ijms19041058] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2018] [Revised: 03/24/2018] [Accepted: 03/26/2018] [Indexed: 12/26/2022] Open
Abstract
Methyl jasmonate (MeJA), synthesized in the jasmonic acid (JA) pathway, has been found to upregulate glucosinolate (GS) biosynthesis in plant species of the Brassicaceae family. Exogenous application of MeJA has shown to increase tissue GS concentrations and the formation of myrosinase-mediated GS hydrolysis products (GSHPs). In vitro and in vivo assays have demonstrated the potential health-promoting effects of certain GSHPs. MeJA is also known to elicit and induce genes associated with defense mechanisms to insect herbivory in Brassica species. To investigate the relationship between MeJA-induced GS biosynthesis and insect defense, three treatments were applied to "Red Russian" kale (Brassicae napus var. pabularia) seedlings: (1) a 250 µM MeJA leaf spray treatment; (2) leaf infestation with larvae of the cabbage looper (Trichoplusia ni (Hübner)); (3) control treatment (neither larval infestation nor MeJA application). Samples of leaf tissue from the three treatments were then assayed for changes in GS and GSHP concentrations, GS gene biosynthesis expression, and myrosinase activity. Major differences were observed between the three treatments in the levels of GS accumulation and GS gene expression. The insect-damaged samples showed significantly lower aliphatic GS accumulation, while both MeJA and T. ni infestation treatments induced greater accumulation of indolyl GS. The gene expression levels of CYP81F4, MYB34, and MYB122 were significantly upregulated in samples treated with MeJA and insects compared to the control group, which explained the increased indolyl GS concentration. The results suggest that the metabolic changes promoted by MeJA application and the insect herbivory response share common mechanisms of induction. This work provides potentially useful information for kale pest control and nutritional quality.
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Affiliation(s)
- Yu-Chun Chiu
- Division of Plant and Soil Sciences, West Virginia University, Morgantown, WV 26506, USA.
| | - John A Juvik
- Department of Crop Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
| | - Kang-Mo Ku
- Division of Plant and Soil Sciences, West Virginia University, Morgantown, WV 26506, USA.
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20
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Neugart S, Wiesner-Reinhold M, Frede K, Jander E, Homann T, Rawel HM, Schreiner M, Baldermann S. Effect of Solid Biological Waste Compost on the Metabolite Profile of Brassica rapa ssp. chinensis. FRONTIERS IN PLANT SCIENCE 2018; 9:305. [PMID: 29616051 PMCID: PMC5864931 DOI: 10.3389/fpls.2018.00305] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 02/22/2018] [Indexed: 06/08/2023]
Abstract
Large quantities of biological waste are generated at various steps within the food production chain and a great utilization potential for this solid biological waste exists apart from the current main usage for the feedstuff sector. It remains unclear how the usage of biological waste as compost modulates plant metabolites. We investigated the effect of biological waste of the processing of coffee, aronia, and hop added to soil on the plant metabolite profile by means of liquid chromatography in pak choi sprouts. Here we demonstrate that the solid biological waste composts induced specific changes in the metabolite profiles and the changes are depending on the type of the organic residues and its concentration in soil. The targeted analysis of selected plant metabolites, associated with health beneficial properties of the Brassicaceae family, revealed increased concentrations of carotenoids (up to 3.2-fold) and decreased amounts of glucosinolates (up to 4.7-fold) as well as phenolic compounds (up to 1.5-fold).
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Affiliation(s)
- Susanne Neugart
- Leibniz Institute of Vegetable and Ornamental Crops, Großbeeren, Germany
| | | | - Katja Frede
- Leibniz Institute of Vegetable and Ornamental Crops, Großbeeren, Germany
- Department of Food Chemistry, Institute of Nutritional Science, University of Potsdam, Nuthetal, Germany
| | - Elisabeth Jander
- Department of Food Chemistry, Institute of Nutritional Science, University of Potsdam, Nuthetal, Germany
| | - Thomas Homann
- Department of Food Chemistry, Institute of Nutritional Science, University of Potsdam, Nuthetal, Germany
| | - Harshadrai M. Rawel
- Department of Food Chemistry, Institute of Nutritional Science, University of Potsdam, Nuthetal, Germany
| | - Monika Schreiner
- Leibniz Institute of Vegetable and Ornamental Crops, Großbeeren, Germany
| | - Susanne Baldermann
- Leibniz Institute of Vegetable and Ornamental Crops, Großbeeren, Germany
- Department of Food Chemistry, Institute of Nutritional Science, University of Potsdam, Nuthetal, Germany
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21
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Trans-generational inheritance of herbivory-induced phenotypic changes in Brassica rapa. Sci Rep 2018; 8:3536. [PMID: 29476119 PMCID: PMC5824794 DOI: 10.1038/s41598-018-21880-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Accepted: 02/12/2018] [Indexed: 11/08/2022] Open
Abstract
Biotic stress can induce plastic changes in fitness-relevant plant traits. Recently, it has been shown that such changes can be transmitted to subsequent generations. However, the occurrence and extent of transmission across different types of traits is still unexplored. Here, we assessed the emergence and transmission of herbivory-induced changes in Brassica rapa and their impact on interactions with insects. We analysed changes in morphology and reproductive traits as well as in flower and leaf volatile emission during two generations with leaf herbivory by Mamestra brassicae and Pieris brassicae and two subsequent generations without herbivory. Herbivory induced changes in all trait types, increasing attractiveness of the plants to the parasitoid wasp Cotesia glomerata and decreasing visitation by the pollinator Bombus terrestris, a potential trade-off. While changes in floral and leaf volatiles disappeared in the first generation after herbivory, some changes in morphology and reproductive traits were still measurable two generations after herbivory. However, neither parasitoids nor pollinators further discriminated between groups with different past treatments. Our results suggest that transmission of herbivore-induced changes occurs preferentially in resource-limited traits connected to plant growth and reproduction. The lack of alterations in plant-insect interactions was likely due to the transient nature of volatile changes.
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22
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Heinze M, Hanschen FS, Wiesner-Reinhold M, Baldermann S, Gräfe J, Schreiner M, Neugart S. Effects of Developmental Stages and Reduced UVB and Low UV Conditions on Plant Secondary Metabolite Profiles in Pak Choi (Brassica rapa subsp. chinensis). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:1678-1692. [PMID: 29397716 DOI: 10.1021/acs.jafc.7b03996] [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] [Indexed: 05/13/2023]
Abstract
Pak choi (Brassica rapa subsp. chinensis) is rich in secondary metabolites and contains numerous antioxidants, including flavonoids; hydroxycinnamic acids; carotenoids; chlorophylls; and glucosinolates, which can be hydrolyzed to epithionitriles, nitriles, or isothiocyanates. Here, we investigate the effect of reduced exposure to ultraviolet B (UVB) and UV (UVA and UVB) light at four different developmental stages of pak choi. We found that both the plant morphology and secondary metabolite profiles were affected by reduced exposure to UVB and UV, depending on the plant's developmental stage. In detail, mature 15- and 30-leaf plants had higher concentrations of flavonoids, hydroxycinnamic acids, carotenoids, and chlorophylls, whereas sprouts contained high concentrations of glucosinolates and their hydrolysis products. Dry weights and leaf areas increased as a result of reduced UVB and low UV. For the flavonoids and hydroxycinnamic acids in 30-leaf plants, less complex compounds were favored, for example, sinapic acid acylated kaempferol triglycoside instead of the corresponding tetraglycoside. Moreover, also in 30-leaf plants, zeaxanthin, a carotenoid linked to protection during photosynthesis, was increased under low UV conditions. Interestingly, most glucosinolates were not affected by reduced UVB and low UV conditions. However, this study underlines the importance of 4-(methylsulfinyl)butyl glucosinolate in response to UVA and UVB exposure. Further, reduced UVB and low UV conditions resulted in higher concentrations of glucosinolate-derived nitriles. In conclusion, exposure to low doses of UVB and UV from the early to late developmental stages did not result in overall lower concentrations of plant secondary metabolites.
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Affiliation(s)
- Mandy Heinze
- Leibniz Institute of Vegetable and Ornamental Crops , Theodor-Echtermeyer-Weg 1, Grossbeeren 14979, Germany
| | - Franziska S Hanschen
- Leibniz Institute of Vegetable and Ornamental Crops , Theodor-Echtermeyer-Weg 1, Grossbeeren 14979, Germany
| | - Melanie Wiesner-Reinhold
- Leibniz Institute of Vegetable and Ornamental Crops , Theodor-Echtermeyer-Weg 1, Grossbeeren 14979, Germany
| | - Susanne Baldermann
- Leibniz Institute of Vegetable and Ornamental Crops , Theodor-Echtermeyer-Weg 1, Grossbeeren 14979, Germany
- Institute of Nutritional Science, University of Potsdam , Arthur-Scheunert-Allee 114-116, Nuthetal 14558, Germany
| | - Jan Gräfe
- Leibniz Institute of Vegetable and Ornamental Crops , Theodor-Echtermeyer-Weg 1, Grossbeeren 14979, Germany
| | - Monika Schreiner
- Leibniz Institute of Vegetable and Ornamental Crops , Theodor-Echtermeyer-Weg 1, Grossbeeren 14979, Germany
| | - Susanne Neugart
- Leibniz Institute of Vegetable and Ornamental Crops , Theodor-Echtermeyer-Weg 1, Grossbeeren 14979, Germany
- Department of Biological Sciences, Loyola University New Orleans , 6363 Saint Charles Avenue, New Orleans, Louisiana 70118, United States
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Cai J, Li P, Luo X, Chang T, Li J, Zhao Y, Xu Y. Selection of appropriate reference genes for the detection of rhythmic gene expression via quantitative real-time PCR in Tibetan hulless barley. PLoS One 2018; 13:e0190559. [PMID: 29309420 PMCID: PMC5757941 DOI: 10.1371/journal.pone.0190559] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 12/16/2017] [Indexed: 11/18/2022] Open
Abstract
Hulless barley (Hordeum vulgare L. var. nudum. hook. f.) has been cultivated as a major crop in the Qinghai-Tibet plateau of China for thousands of years. Compared to other cereal crops, the Tibetan hulless barley has developed stronger endogenous resistances to survive in the severe environment of its habitat. To understand the unique resistant mechanisms of this plant, detailed genetic studies need to be performed. The quantitative real-time reverse transcription-polymerase chain reaction (qRT-PCR) is the most commonly used method in detecting gene expression. However, the selection of stable reference genes under limited experimental conditions was considered to be an essential step for obtaining accurate results in qRT-PCR. In this study, 10 candidate reference genes—ACT (Actin), E2 (Ubiquitin conjugating enzyme 2), TUBα (Alpha-tubulin), TUBβ6 (Beta-tubulin 6), GAPDH (Glyceraldehyde 3-phosphate dehydrogenase), EF-1α (Elongation factor 1-alpha), SAMDC (S-adenosylmethionine decarboxylase), PKABA1 (Gene for protein kinase HvPKABA1), PGK (Phosphoglycerate kinase), and HSP90 (Heat shock protein 90)—were selected from the NCBI gene database of barley. Following qRT-PCR amplifications of all candidate reference genes in Tibetan hulless barley seedlings under various stressed conditions, the stabilities of these candidates were analyzed by three individual software packages including geNorm, NormFinder, and BestKeeper. The results demonstrated that TUBβ6, E2, TUBα, and HSP90 were generally the most suitable sets under all tested conditions; similarly, TUBα and HSP90 showed peak stability under salt stress, TUBα and EF-1α were the most suitable reference genes under cold stress, and ACT and E2 were the most stable under drought stress. Finally, a known circadian gene CCA1 was used to verify the service ability of chosen reference genes. The results confirmed that all recommended reference genes by the three software were suitable for gene expression analysis under tested stress conditions by the qRT-PCR method.
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Affiliation(s)
- Jing Cai
- Provincial Key Laboratory of Biotechnology of Shaanxi Province, Xi’an, China
- Life Sciences School of Northwest University, Xi’an, China
- Key Laboratory of Resource Biology and Biotechnology in western China (Ministry of Education), Xi’an, China
| | - Pengfei Li
- Provincial Key Laboratory of Biotechnology of Shaanxi Province, Xi’an, China
- Life Sciences School of Northwest University, Xi’an, China
- Key Laboratory of Resource Biology and Biotechnology in western China (Ministry of Education), Xi’an, China
| | - Xiao Luo
- Provincial Key Laboratory of Biotechnology of Shaanxi Province, Xi’an, China
- Life Sciences School of Northwest University, Xi’an, China
- Key Laboratory of Resource Biology and Biotechnology in western China (Ministry of Education), Xi’an, China
| | - Tianliang Chang
- Provincial Key Laboratory of Biotechnology of Shaanxi Province, Xi’an, China
- Life Sciences School of Northwest University, Xi’an, China
- Key Laboratory of Resource Biology and Biotechnology in western China (Ministry of Education), Xi’an, China
| | - Jiaxing Li
- Provincial Key Laboratory of Biotechnology of Shaanxi Province, Xi’an, China
- Life Sciences School of Northwest University, Xi’an, China
- Key Laboratory of Resource Biology and Biotechnology in western China (Ministry of Education), Xi’an, China
| | - Yuwei Zhao
- Provincial Key Laboratory of Biotechnology of Shaanxi Province, Xi’an, China
- Life Sciences School of Northwest University, Xi’an, China
- Key Laboratory of Resource Biology and Biotechnology in western China (Ministry of Education), Xi’an, China
- * E-mail:
| | - Yao Xu
- Provincial Key Laboratory of Biotechnology of Shaanxi Province, Xi’an, China
- Life Sciences School of Northwest University, Xi’an, China
- Key Laboratory of Resource Biology and Biotechnology in western China (Ministry of Education), Xi’an, China
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Moreira-Rodríguez M, Nair V, Benavides J, Cisneros-Zevallos L, Jacobo-Velázquez DA. UVA, UVB Light, and Methyl Jasmonate, Alone or Combined, Redirect the Biosynthesis of Glucosinolates, Phenolics, Carotenoids, and Chlorophylls in Broccoli Sprouts. Int J Mol Sci 2017; 18:E2330. [PMID: 29113068 PMCID: PMC5713299 DOI: 10.3390/ijms18112330] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 10/25/2017] [Accepted: 10/31/2017] [Indexed: 12/17/2022] Open
Abstract
Broccoli sprouts contain health-promoting phytochemicals that can be enhanced by applying ultraviolet light (UV) or phytohormones. The separate and combined effects of methyl jasmonate (MJ), UVA, or UVB lights on glucosinolate, phenolic, carotenoid, and chlorophyll profiles were assessed in broccoli sprouts. Seven-day-old broccoli sprouts were exposed to UVA (9.47 W/m²) or UVB (7.16 W/m²) radiation for 120 min alone or in combination with a 25 µM MJ solution, also applied to sprouts without UV supplementation. UVA + MJ and UVB + MJ treatments increased the total glucosinolate content by ~154% and ~148%, respectively. MJ induced the biosynthesis of indole glucosinolates, especially neoglucobrassicin (~538%), showing a synergistic effect with UVA stress. UVB increased the content of aliphatic and indole glucosinolates, such as glucoraphanin (~78%) and 4-methoxy-glucobrassicin (~177%). UVA increased several phenolics such as gallic acid (~57%) and a kaempferol glucoside (~25.4%). MJ treatment decreased most phenolic levels but greatly induced accumulation of 5-sinapoylquinic acid (~239%). MJ treatments also reduced carotenoid and chlorophyll content, while UVA increased lutein (~23%), chlorophyll b (~31%), neoxanthin (~34%), and chlorophyll a (~67%). Results indicated that UV- and/or MJ-treated broccoli sprouts redirect the carbon flux to the biosynthesis of specific glucosinolates, phenolics, carotenoids, and chlorophylls depending on the type of stress applied.
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Affiliation(s)
- Melissa Moreira-Rodríguez
- Tecnológico de Monterrey, Escuela de Ingeniería y Ciencias, Centro de Biotecnología FEMSA, Av. Eugenio Garza Sada 2501 Sur, C.P. 64849 Monterrey, N.L., México.
| | - Vimal Nair
- Department of Horticultural Sciences, Texas A&M University, College Station, TX 77843-2133, USA.
| | - Jorge Benavides
- Tecnológico de Monterrey, Escuela de Ingeniería y Ciencias, Centro de Biotecnología FEMSA, Av. Eugenio Garza Sada 2501 Sur, C.P. 64849 Monterrey, N.L., México.
| | - Luis Cisneros-Zevallos
- Department of Horticultural Sciences, Texas A&M University, College Station, TX 77843-2133, USA.
| | - Daniel A Jacobo-Velázquez
- Tecnológico de Monterrey, Escuela de Ingeniería y Ciencias, Centro de Biotecnología FEMSA, Av. Eugenio Garza Sada 2501 Sur, C.P. 64849 Monterrey, N.L., México.
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25
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Metabolic profiling of glucosinolates and their hydrolysis products in a germplasm collection of Brassica rapa turnips. Food Res Int 2017; 100:392-403. [DOI: 10.1016/j.foodres.2017.04.016] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 04/11/2017] [Accepted: 04/16/2017] [Indexed: 11/19/2022]
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26
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Omondi EO, Engels C, Nambafu G, Schreiner M, Neugart S, Abukutsa-Onyango M, Winkelmann T. Nutritional compound analysis and morphological characterization of spider plant (Cleome gynandra) - an African indigenous leafy vegetable. Food Res Int 2017; 100:284-295. [PMID: 28873690 DOI: 10.1016/j.foodres.2017.06.050] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 06/20/2017] [Accepted: 06/20/2017] [Indexed: 10/19/2022]
Abstract
Spider plant is among the important indigenous African leafy vegetables having the potential to contribute to food and nutritional security in sub-Saharan Africa. The main objective of this study was to quantify the mineral concentration, to identify and quantify glucosinolates and flavonoids in spider plant and further to characterize spider plant entries using important morphological traits. Thirty spider plant entries from different African countries, comprising of farmers' cultivars, gene bank accessions and advanced lines were grown in a field experiment and harvested for leaves, stems, flowers and siliques at different developmental stages. Five plant types based on the stem and petiole colorations were identified. Significant genotypic differences were shown for all the morphological traits except for 100 seed weight and silique weight. High mineral concentrations in the leaf tissue were observed especially for potassium, calcium, magnesium, phosphorus, iron, manganese and zinc. The aliphatic 3-hydroxypropyl glucosinolate was the main glucosinolate detected in all tissues with the highest concentrations in the reproductive organs. Glycosides of quercetin, kaempferol and isorhamnetin were the main flavonoids. Isorhamnetin glycosides were detected in trace amounts in both, leaves and inflorescences, while quercetin and kaempferol glycosides were the dominant flavonoids in the leaves and inflorescences, respectively. This knowledge of beneficial nutrient contents is an incentive for promoting spider plant consumption for improved human health while the morphological diversity analysis will be important for the further development of the spider plant germplasm.
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Affiliation(s)
- Emmanuel O Omondi
- Institute of Horticultural Production Systems, Woody Plant and Propagation Physiology, Leibniz Universität Hannover, Hannover, Germany
| | - Christof Engels
- Department of Plant Nutrition and Fertilization, Humboldt University of Berlin, Berlin, Germany
| | - Godfrey Nambafu
- Department of Plant Nutrition and Fertilization, Humboldt University of Berlin, Berlin, Germany
| | - Monika Schreiner
- Leibniz Institute of Vegetable and Ornamental Crops, Grossbeeren, Germany
| | - Susanne Neugart
- Leibniz Institute of Vegetable and Ornamental Crops, Grossbeeren, Germany
| | - Mary Abukutsa-Onyango
- Department Horticulture, Jomo Kenyatta University of Agriculture & Technology (JKUAT), Juja, Kenya
| | - Traud Winkelmann
- Institute of Horticultural Production Systems, Woody Plant and Propagation Physiology, Leibniz Universität Hannover, Hannover, Germany.
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27
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Lee YS, Park HS, Lee DK, Jayakodi M, Kim NH, Koo HJ, Lee SC, Kim YJ, Kwon SW, Yang TJ. Integrated Transcriptomic and Metabolomic Analysis of Five Panax ginseng Cultivars Reveals the Dynamics of Ginsenoside Biosynthesis. FRONTIERS IN PLANT SCIENCE 2017; 8:1048. [PMID: 28674547 PMCID: PMC5474932 DOI: 10.3389/fpls.2017.01048] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 05/31/2017] [Indexed: 05/23/2023]
Abstract
Panax ginseng C.A. Meyer is a traditional medicinal herb that produces bioactive compounds such as ginsenosides. Here, we investigated the diversity of ginsenosides and related genes among five genetically fixed inbred ginseng cultivars (Chunpoong [CP], Cheongsun [CS], Gopoong [GO], Sunhyang [SH], and Sunun [SU]). To focus on the genetic diversity related to ginsenoside biosynthesis, we utilized in vitro cultured adventitious roots from the five cultivars grown under controlled environmental conditions. PCA loading plots based on secondary metabolite composition classified the five cultivars into three groups. We selected three cultivars (CS, SH, and SU) to represent the three groups and conducted further transcriptome and gas chromatography-mass spectrometry analyses to identify genes and intermediates corresponding to the variation in ginsenosides among cultivars. We quantified ginsenoside contents from the three cultivars. SH had more than 12 times the total ginsenoside content of CS, with especially large differences in the levels of panaxadiol-type ginsenosides. The expression levels of genes encoding squalene epoxidase (SQE) and dammarenediol synthase (DDS) were also significantly lower in CS than SH and SU, which is consistent with the low levels of ginsenoside produced in this cultivar. Methyl jasmonate (MeJA) treatment increased the levels of panaxadiol-type ginsenosides up to 4-, 13-, and 31-fold in SH, SU, and CS, respectively. MeJA treatment also greatly increased the quantity of major intermediates and the expression of the underlying genes in the ginsenoside biosynthesis pathway; these intermediates included squalene, 2,3-oxidosqualene, and dammarenediol II, especially in CS, which had the lowest ginsenoside content under normal culture conditions. We conclude that SQE and DDS are the most important genetic factors for ginsenoside biosynthesis with diversity among ginseng cultivars.
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Affiliation(s)
- Yun Sun Lee
- Department of Plant Science, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, College of Agriculture and Life Sciences, Seoul National UniversitySeoul, South Korea
| | - Hyun-Seung Park
- Department of Plant Science, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, College of Agriculture and Life Sciences, Seoul National UniversitySeoul, South Korea
| | - Dong-Kyu Lee
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National UniversitySeoul, South Korea
| | - Murukarthick Jayakodi
- Department of Plant Science, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, College of Agriculture and Life Sciences, Seoul National UniversitySeoul, South Korea
| | - Nam-Hoon Kim
- Department of Plant Science, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, College of Agriculture and Life Sciences, Seoul National UniversitySeoul, South Korea
| | - Hyun Jo Koo
- Department of Plant Science, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, College of Agriculture and Life Sciences, Seoul National UniversitySeoul, South Korea
| | - Sang-Choon Lee
- Department of Plant Science, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, College of Agriculture and Life Sciences, Seoul National UniversitySeoul, South Korea
| | - Yeon Jeong Kim
- Department of Plant Science, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, College of Agriculture and Life Sciences, Seoul National UniversitySeoul, South Korea
| | - Sung Won Kwon
- College of Pharmacy and Research Institute of Pharmaceutical Sciences, Seoul National UniversitySeoul, South Korea
| | - Tae-Jin Yang
- Department of Plant Science, Plant Genomics and Breeding Institute, Research Institute of Agriculture and Life Sciences, College of Agriculture and Life Sciences, Seoul National UniversitySeoul, South Korea
- Crop Biotechnology Institute/GreenBio Science and Technology, Seoul National UniversityPyeongchang, South Korea
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28
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Kim MJ, Chiu YC, Kim NK, Park HM, Lee CH, Juvik JA, Ku KM. Cultivar-Specific Changes in Primary and Secondary Metabolites in Pak Choi (Brassica Rapa, Chinensis Group) by Methyl Jasmonate. Int J Mol Sci 2017; 18:E1004. [PMID: 28481284 PMCID: PMC5454917 DOI: 10.3390/ijms18051004] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 05/01/2017] [Accepted: 05/02/2017] [Indexed: 11/16/2022] Open
Abstract
Glucosinolates, their hydrolysis products and primary metabolites were analyzed in five pak choi cultivars to determine the effect of methyl jasmonate (MeJA) on metabolite flux from primary metabolites to glucosinolates and their hydrolysis products. Among detected glucosinolates (total 14 glucosinolates; 9 aliphatic, 4 indole and 1 aromatic glucosinolates), indole glucosinolate concentrations (153-229%) and their hydrolysis products increased with MeJA treatment. Changes in the total isothiocyanates by MeJA were associated with epithiospecifier protein activity estimated as nitrile formation. Goitrin, a goitrogenic compound, significantly decreased by MeJA treatment in all cultivars. Changes in glucosinolates, especially aliphatic, significantly differed among cultivars. Primary metabolites including amino acids, organic acids and sugars also changed with MeJA treatment in a cultivar-specific manner. A decreased sugar level suggests that they might be a carbon source for secondary metabolite biosynthesis in MeJA-treated pak choi. The result of the present study suggests that MeJA can be an effective agent to elevate indole glucosinolates and their hydrolysis products and to reduce a goitrogenic compound in pak choi. The total glucosinolate concentration was the highest in "Chinese cabbage" in the control group (32.5 µmol/g DW), but indole glucosinolates increased the greatest in "Asian" when treated with MeJA.
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Affiliation(s)
- Moo Jung Kim
- Division of Plant and Soil Sciences, West Virginia University, Morgantown, WV 26506, USA.
| | - Yu-Chun Chiu
- Division of Plant and Soil Sciences, West Virginia University, Morgantown, WV 26506, USA.
| | - Na Kyung Kim
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Korea.
| | - Hye Min Park
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Korea.
| | - Choong Hwan Lee
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Korea.
| | - John A Juvik
- Department of Crop Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
| | - Kang-Mo Ku
- Division of Plant and Soil Sciences, West Virginia University, Morgantown, WV 26506, USA.
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29
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Augustine R, Bisht NC. Regulation of Glucosinolate Metabolism: From Model Plant Arabidopsis thaliana to Brassica Crops. REFERENCE SERIES IN PHYTOCHEMISTRY 2017. [DOI: 10.1007/978-3-319-25462-3_3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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30
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Hanschen FS, Schreiner M. Isothiocyanates, Nitriles, and Epithionitriles from Glucosinolates Are Affected by Genotype and Developmental Stage in Brassica oleracea Varieties. FRONTIERS IN PLANT SCIENCE 2017; 8:1095. [PMID: 28690627 PMCID: PMC5479884 DOI: 10.3389/fpls.2017.01095] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 06/06/2017] [Indexed: 05/07/2023]
Abstract
Vegetables of the Brassica oleracea group, such as broccoli, cauliflower, and cabbage, play an important role for glucosinolate consumption in the human diet. Upon maceration of the vegetable tissue, glucosinolates are degraded enzymatically to form volatile isothiocyanates, nitriles, and epithionitriles. However, only the uptake of isothiocyanates is linked to the cancer-preventive effects. Thus, it is of great interest to evaluate especially the isothiocyanate formation. Here, we studied the formation of glucosinolates and their respective hydrolysis products in sprouts and fully developed vegetable heads of different genotypes of the five B. oleracea varieties: broccoli, cauliflower as well as white, red, and savoy cabbages. Further, the effect of ontogeny (developmental stages) during the head development on the formation of glucosinolates and their respective hydrolysis products was evaluated at three different developmental stages (mini, fully developed, and over-mature head). Broccoli and red cabbage were mainly rich in 4-(methylsulfinyl)butyl glucosinolate (glucoraphanin), whereas cauliflower, savoy cabbage and white cabbage contained mainly 2-propenyl (sinigrin) and 3-(methylsulfinyl)propyl glucosinolate (glucoiberin). Upon hydrolysis, epithionitriles or nitriles were often observed to be the main hydrolysis products, with 1-cyano-2,3-epithiopropane being most abundant with up to 5.7 μmol/g fresh weight in white cabbage sprouts. Notably, sprouts often contained more than 10 times more glucosinolates or their hydrolysis products compared to fully developed vegetables. Moreover, during head development, both glucosinolate concentrations as well as hydrolysis product concentrations changed and mini heads contained the highest isothiocyanate concentrations. Thus, from a cancer-preventive point of view, consumption of mini heads of the B. oleracea varieties is recommended.
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31
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Kellenberger RT, Schlüter PM, Schiestl FP. Herbivore-Induced DNA Demethylation Changes Floral Signalling and Attractiveness to Pollinators in Brassica rapa. PLoS One 2016; 11:e0166646. [PMID: 27870873 PMCID: PMC5117703 DOI: 10.1371/journal.pone.0166646] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 11/01/2016] [Indexed: 12/27/2022] Open
Abstract
Plants have to fine-tune their signals to optimise the trade-off between herbivore deterrence and pollinator attraction. An important mechanism in mediating plant-insect interactions is the regulation of gene expression via DNA methylation. However, the effect of herbivore-induced DNA methylation changes on pollinator-relevant plant signalling has not been systematically investigated. Here, we assessed the impact of foliar herbivory on DNA methylation and floral traits in the model crop plant Brassica rapa. Methylation-sensitive amplified fragment length polymorphism (MSAP) analysis showed that leaf damage by the caterpillar Pieris brassicae was associated with genome-wide methylation changes in both leaves and flowers of B. rapa as well as a downturn in flower number, morphology and scent. A comparison to plants with jasmonic acid-induced defence showed similar demethylation patterns in leaves, but both the floral methylome and phenotype differed significantly from P. brassicae infested plants. Standardised genome-wide demethylation with 5-azacytidine in five different B. rapa full-sib groups further resulted in a genotype-specific downturn of floral morphology and scent, which significantly reduced the attractiveness of the plants to the pollinator bee Bombus terrestris. These results suggest that DNA methylation plays an important role in adjusting plant signalling in response to changing insect communities.
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Affiliation(s)
- Roman T. Kellenberger
- Department of Systematic and Evolutionary Botany, University of Zurich, Zurich, Switzerland
| | - Philipp M. Schlüter
- Department of Systematic and Evolutionary Botany, University of Zurich, Zurich, Switzerland
| | - Florian P. Schiestl
- Department of Systematic and Evolutionary Botany, University of Zurich, Zurich, Switzerland
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32
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Yi GE, Robin AHK, Yang K, Park JI, Hwang BH, Nou IS. Exogenous Methyl Jasmonate and Salicylic Acid Induce Subspecies-Specific Patterns of Glucosinolate Accumulation and Gene Expression in Brassica oleracea L. Molecules 2016; 21:molecules21101417. [PMID: 27783045 PMCID: PMC6273115 DOI: 10.3390/molecules21101417] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Revised: 10/18/2016] [Accepted: 10/19/2016] [Indexed: 01/18/2023] Open
Abstract
Glucosinolates have anti-carcinogenic properties. In the recent decades, the genetics of glucosinolate biosynthesis has been widely studied, however, the expression of specific genes involved in glucosinolate biosynthesis under exogenous phytohormone treatment has not been explored at the subspecies level in Brassica oleracea. Such data are vital for strategies aimed at selective exploitation of glucosinolate profiles. This study quantified the expression of 38 glucosinolate biosynthesis-related genes in three B. oleracea subspecies, namely cabbage, broccoli and kale, and catalogued associations between gene expression and increased contents of individual glucosinolates under methyl jasmonate (MeJA) and salicylic acid (SA) treatments. Glucosinolate accumulation and gene expression in response to phytohormone elicitation was subspecies specific. For instance, cabbage leaves showed enhanced accumulation of the aliphatic glucoiberin, progoitrin, sinigrin and indolic neoglucobrassicin under both MeJA and SA treatment. MeJA treatment induced strikingly higher accumulation of glucobrassicin (GBS) in cabbage and kale and of neoglucobrassicin (NGBS) in broccoli compared to controls. Notably higher expression of ST5a (Bol026200), CYP81F1 (Bol028913, Bol028914) and CYP81F4 genes was associated with significantly higher GBS accumulation under MeJA treatment compared to controls in all three subspecies. CYP81F4 genes, trans-activated by MYB34 genes, were expressed at remarkably high levels in all three subspecies under MeJA treatment, which also induced in higher indolic NGBS accumulation in all three subspecies. Remarkably higher expression of MYB28 (Bol036286), ST5b, ST5c, AOP2, FMOGS-OX5 (Bol031350) and GSL-OH (Bol033373) was associated with much higher contents of aliphatic glucosinolates in kale leaves compared to the other two subspecies. The genes expressed highly could be utilized in strategies to selectively increase glucosinolate compounds in B. oleracea subspecies. These results promote efforts to develop genotypes of B. oleracea and other species with enhanced levels of desired glucosinolates.
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Affiliation(s)
- Go-Eun Yi
- Department of Horticulture, Sunchon National University, Suncheon-si 540-950, Korea.
| | - Arif Hasan Khan Robin
- Department of Horticulture, Sunchon National University, Suncheon-si 540-950, Korea.
| | - Kiwoung Yang
- Department of Horticulture, Sunchon National University, Suncheon-si 540-950, Korea.
| | - Jong-In Park
- Department of Horticulture, Sunchon National University, Suncheon-si 540-950, Korea.
| | - Byung Ho Hwang
- R & D Center for Crop Breeding, Asia Seed Ltd., Icheon-si, Gyeonggi-do 467-906, Korea.
| | - Ill-Sup Nou
- Department of Horticulture, Sunchon National University, Suncheon-si 540-950, Korea.
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Ku KM, Becker TM, Juvik JA. Transcriptome and Metabolome Analyses of Glucosinolates in Two Broccoli Cultivars Following Jasmonate Treatment for the Induction of Glucosinolate Defense to Trichoplusia ni (Hübner). Int J Mol Sci 2016; 17:ijms17071135. [PMID: 27428958 PMCID: PMC4964508 DOI: 10.3390/ijms17071135] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 07/08/2016] [Accepted: 07/08/2016] [Indexed: 01/16/2023] Open
Abstract
Lepidopteran larvae growth is influenced by host plant glucosinolate (GS) concentrations, which are, in turn, influenced by the phytohormone jasmonate (JA). In order to elucidate insect resistance biomarkers to lepidopteran pests, transcriptome and metabolome analyses following JA treatments were conducted with two broccoli cultivars, Green Magic and VI-158, which have differentially induced indole GSs, neoglucobrassicin and glucobrassicin, respectively. To test these two inducible GSs on growth of cabbage looper (Trichoplusia ni), eight neonate cabbage looper larvae were placed onto each of three plants per JA treatments (0, 100, 200, 400 µM) three days after treatment. After five days of feeding, weight of larvae and their survival rate was found to decrease with increasing JA concentrations in both broccoli cultivars. JA-inducible GSs were measured by high performance liquid chromatography. Neoglucobrassicin in Green Magic and glucobrassicin in VI-158 leaves were increased in a dose-dependent manner. One or both of these glucosinolates and/or their hydrolysis products showed significant inverse correlations with larval weight and survival (five days after treatment) while being positively correlated with the number of days to pupation. This implies that these two JA-inducible glucosinolates can influence the growth and survival of cabbage looper larvae. Transcriptome profiling supported the observed changes in glucosinolate and their hydrolysis product concentrations following JA treatments. Several genes related to GS metabolism differentiate the two broccoli cultivars in their pattern of transcriptional response to JA treatments. Indicative of the corresponding change in indole GS concentrations, transcripts of the transcription factor MYB122, core structure biosynthesis genes (CYP79B2, UGT74B1, SUR1, SOT16, SOT17, and SOT18), an indole glucosinolate side chain modification gene (IGMT1), and several glucosinolate hydrolysis genes (TGG1, TGG2, and ESM1) were significantly increased in Green Magic (statistically significant in most cases at 400 µM) while UGT74B1 and MYB122 were significantly increased in VI-158. Therefore, these metabolite and transcript biomarker results indicate that transcriptome profiling can identify genes associated with the formation of two different indole GS and their hydrolysis products. Therefore, these metabolite and transcript biomarkers could be useful in an effective marker-assisted breeding strategy for resistance to generalist lepidopteran pests in broccoli and potentially other Brassica vegetables.
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Affiliation(s)
- Kang-Mo Ku
- Division of Plant and Soil Sciences, West Virginia University, Morgantown, WV 26505, USA.
- Department of Crop Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
| | - Talon M Becker
- Department of Crop Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
| | - John A Juvik
- Department of Crop Sciences, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
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Cao HH, Liu HR, Zhang ZF, Liu TX. The green peach aphid Myzus persicae perform better on pre-infested Chinese cabbage Brassica pekinensis by enhancing host plant nutritional quality. Sci Rep 2016; 6:21954. [PMID: 26905564 PMCID: PMC4764936 DOI: 10.1038/srep21954] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Accepted: 02/02/2016] [Indexed: 12/20/2022] Open
Abstract
The green peach aphid, Myzus persicae Sulzer, is a notorious pest on vegetables, which often aggregates in high densities on crop leaves. In this study, we investigated whether M. persicae could suppress the resistance level of Chinese cabbage Brassica pekinensis. M. persicae performed better in terms of weight gain (~33% increase) and population growth (~110% increase) when feeding on previously infested (pre-infested) Chinese cabbage compared with those on non-infested plants. However, when given a choice, 64% of the aphids preferred to settle on non-infested leaves, while 29% of aphids chose pre-infested leaves that had a 2.9 times higher concentration of glucosinolates. Aphid feeding significantly enhanced the amino acid:sugar ratio of phloem sap and the absolute amino acid concentration in plant leaves. Aphid infestation significantly increased the expression levels of salicylic acid (SA) marker genes, while it had marginal effects on the expression of jasmonate marker genes. Exogenously applied SA or methyl jasmonate had no significant effects on M. persicae performance, although these chemicals increased glucosinolates concentration in plant leaves. M. persicae infestation increase amino acid:sugar ratio and activate plant defenses, but aphid performed better on pre-infested plants, suggesting that both nutrition and toxics should be considered in insect-plant interaction.
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Affiliation(s)
- He-He Cao
- State Key Laboratory for Crop Stress Biology in Arid Areas, Yangling, Shaanxi, 712100, China
- Key Laboratory of Crop Pest Management on the Northwest Loess Plateau, Ministry of Agriculture, Yangling, Shaanxi, 712100, China
| | - Hui-Ru Liu
- Innovation Experimental College, Northwest A&F University, Yangling, Shaanxi, 712100, China
| | - Zhan-Feng Zhang
- State Key Laboratory for Crop Stress Biology in Arid Areas, Yangling, Shaanxi, 712100, China
- Key Laboratory of Crop Pest Management on the Northwest Loess Plateau, Ministry of Agriculture, Yangling, Shaanxi, 712100, China
| | - Tong-Xian Liu
- State Key Laboratory for Crop Stress Biology in Arid Areas, Yangling, Shaanxi, 712100, China
- Key Laboratory of Crop Pest Management on the Northwest Loess Plateau, Ministry of Agriculture, Yangling, Shaanxi, 712100, China
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Hanschen FS, Herz C, Schlotz N, Kupke F, Bartolomé Rodríguez MM, Schreiner M, Rohn S, Lamy E. The Brassica epithionitrile 1-cyano-2,3-epithiopropane triggers cell death in human liver cancer cells in vitro. Mol Nutr Food Res 2015; 59:2178-89. [PMID: 26251050 DOI: 10.1002/mnfr.201500296] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2015] [Revised: 07/24/2015] [Accepted: 07/25/2015] [Indexed: 02/04/2023]
Abstract
SCOPE Glucosinolates are secondary metabolites present in Brassica vegetables. Alkenyl glucosinolates are enzymatically degraded forming nitriles or isothiocyanates, but in the presence of epithiospecifier protein, epithionitriles are released. However, studies on the occurrence of epithionitriles in Brassica food and knowledge about their biological effects are scarce. METHODS AND RESULTS Epithionitrile formation from glucosinolates of seven Brassica vegetables was analyzed using GC-MS and HPLC-DAD. Bioactivity of synthetic and plant-derived 1-cyano-2,3-epithiopropane (CETP) - the predominant epithionitrile in Brassica vegetables - in three human hepatocellular carcinoma (HCC) cell lines and primary murine hepatocytes was also evaluated. The majority of the Brassica vegetables were producers of nitriles or epithionitriles as hydrolysis products and not of isothiocyanates. For example, Brussels sprouts and savoy cabbage contained up to 0.8 μmol CETP/g vegetable. Using formazan dye assays, concentrations of 380-1500 nM CETP were observed to inhibit the mitochondrial dehydrogenase activity of human HCC cells without impairment of cell growth. At 100-fold higher CETP concentrations, cell death was observed. Presence of plant matrix increased CETP-based toxicity. CONCLUSION These in vitro data provide no indication that epithionitriles will severely affect human health by Brassica consumption. In contrast to isothiocyanates, no evidence of selective toxicity against HCC cells was found.
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Affiliation(s)
- Franziska S Hanschen
- Department of Quality, Leibniz-Institute of Vegetable and Ornamental Crops Großbeeren and Erfurt e.V, Großbeeren, Germany
| | - Corinna Herz
- Environmental Health Sciences, University Medical Center Freiburg, Freiburg i.Br, Germany
| | - Nina Schlotz
- Environmental Health Sciences, University Medical Center Freiburg, Freiburg i.Br, Germany
| | - Franziska Kupke
- Environmental Health Sciences, University Medical Center Freiburg, Freiburg i.Br, Germany.,Institute of Food Chemistry, Hamburg School of Food Science, University of Hamburg, Hamburg, Germany
| | - María M Bartolomé Rodríguez
- Clinic for Internal Medicine II, Molecular Biology, University Medical Center Freiburg, Freiburg i.Br, Germany
| | - Monika Schreiner
- Department of Quality, Leibniz-Institute of Vegetable and Ornamental Crops Großbeeren and Erfurt e.V, Großbeeren, Germany
| | - Sascha Rohn
- Institute of Food Chemistry, Hamburg School of Food Science, University of Hamburg, Hamburg, Germany
| | - Evelyn Lamy
- Environmental Health Sciences, University Medical Center Freiburg, Freiburg i.Br, Germany
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Augustine R, Bisht NC. Biotic elicitors and mechanical damage modulate glucosinolate accumulation by co-ordinated interplay of glucosinolate biosynthesis regulators in polyploid Brassica juncea. PHYTOCHEMISTRY 2015; 117:43-50. [PMID: 26057228 DOI: 10.1016/j.phytochem.2015.05.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Revised: 03/31/2015] [Accepted: 05/26/2015] [Indexed: 05/28/2023]
Abstract
Glucosinolates are nitrogen and sulfur containing secondary metabolites found mainly in the Brassicaceae. They function as plant defense compounds against a broad spectrum of pathogens and pests. Since these molecules form part of the plant defense mechanism, glucosinolate biosynthesis may be modulated by environmental signals leading to activation of a biological stress response. In the current study, we have mimicked such conditions by exogenously applying biotic elicitors such as methyl jasmonate, salicylic acid, glucose and mechanical injury in Brassica juncea seedling over a time course experiment. We found that total glucosinolates over-accumulated under these stress conditions with maximum accumulation observed 24h post treatment. Indole glucosinolates like 1-methoxy-indol-3-ylmethyl and its precursor indol-3-methyl glucosinolates showed a more significant induction compared to aliphatic glucosinolates thereby suggesting a prominent role of indole glucosinolates during plant defense response in B. juncea seedlings. In contrast, the higher amounts of aliphatic glucosinolates were less regulated by the tested biotic elicitors in B. juncea. Expression profiling of multiple homologs of key transcriptional regulators of glucosinolate biosynthesis further showed that a complex interplay of these regulators exists in polyploid B. juncea where they exert co-ordinated and overlapping effects toward altering glucosinolate accumulation. This study has a significant role toward understanding and augmenting plant defense mechanisms in B. juncea, a globally important oilseed crop of genus Brassica.
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Affiliation(s)
- Rehna Augustine
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi 110067, India.
| | - Naveen C Bisht
- National Institute of Plant Genome Research, Aruna Asaf Ali Marg, New Delhi 110067, India.
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Zang YX, Ge JL, Huang LH, Gao F, Lv XS, Zheng WW, Hong SB, Zhu ZJ. Leaf and root glucosinolate profiles of Chinese cabbage (Brassica rapa ssp. pekinensis) as a systemic response to methyl jasmonate and salicylic acid elicitation. J Zhejiang Univ Sci B 2015; 16:696-708. [PMID: 26238545 PMCID: PMC4534547 DOI: 10.1631/jzus.b1400370] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Accepted: 05/05/2015] [Indexed: 12/16/2022]
Abstract
Glucosinolates (GSs) are an important group of defensive phytochemicals mainly found in Brassicaceae. Plant hormones jasmonic acid (JA) and salicylic acid (SA) are major regulators of plant response to pathogen attack. However, there is little information about the interactive effect of both elicitors on inducing GS biosynthesis in Chinese cabbage (Brassica rapa ssp. pekinensis). In this study, we applied different concentrations of methyl jasmonate (MeJA) and/or SA onto the leaf and root of Chinese cabbage to investigate the time-course interactive profiles of GSs. Regardless of the site of the elicitation and the concentrations of the elicitors, the roots accumulated much more GSs and were more sensitive and more rapidly responsive to the elicitors than leaves. Irrespective of the elicitation site, MeJA had a greater inducing and longer lasting effect on GS accumulation than SA. All three components of indole GS (IGS) were detected along with aliphatic and aromatic GSs. However, IGS was a major component of total GSs that accumulated rapidly in both root and leaf tissues in response to MeJA and SA elicitation. Neoglucobrassicin (neoGBC) did not respond to SA but to MeJA in leaf tissue, while it responded to both SA and MeJA in root tissue. Conversion of glucobrassicin (GBC) to neoGBC occurred at a steady rate over 3 d of elicitation. Increased accumulation of 4-methoxy glucobrassicin (4-MGBC) occurred only in the root irrespective of the type of elicitors and the site of elicitation. Thus, accumulation of IGS is a major metabolic hallmark of SA- and MeJA-mediated systemic response systems. SA exerted an antagonistic effect on the MeJA-induced root GSs irrespective of the site of elicitation. However, SA showed synergistic and antagonistic effects on the MeJA-induced leaf GSs when roots and leaves are elicitated for 3 d, respectively.
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Affiliation(s)
- Yun-xiang Zang
- Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, Research Center of Bio-Breeding Industry, School of Agricultural and Food Science, Zhejiang A & F University, Lin'an 311300, China
| | - Jia-li Ge
- Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, Research Center of Bio-Breeding Industry, School of Agricultural and Food Science, Zhejiang A & F University, Lin'an 311300, China
| | - Ling-hui Huang
- Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, Research Center of Bio-Breeding Industry, School of Agricultural and Food Science, Zhejiang A & F University, Lin'an 311300, China
| | - Fei Gao
- Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, Research Center of Bio-Breeding Industry, School of Agricultural and Food Science, Zhejiang A & F University, Lin'an 311300, China
| | - Xi-shan Lv
- Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, Research Center of Bio-Breeding Industry, School of Agricultural and Food Science, Zhejiang A & F University, Lin'an 311300, China
| | - Wei-wei Zheng
- Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, Research Center of Bio-Breeding Industry, School of Agricultural and Food Science, Zhejiang A & F University, Lin'an 311300, China;
| | - Seung-beom Hong
- Department of Biotechnology, University of Houston-Clear Lake, Houston, TX 77058-1098, USA
| | - Zhu-jun Zhu
- Key Laboratory for Quality Improvement of Agricultural Products of Zhejiang Province, Research Center of Bio-Breeding Industry, School of Agricultural and Food Science, Zhejiang A & F University, Lin'an 311300, China;
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Hanschen FS, Yim B, Winkelmann T, Smalla K, Schreiner M. Degradation of Biofumigant Isothiocyanates and Allyl Glucosinolate in Soil and Their Effects on the Microbial Community Composition. PLoS One 2015; 10:e0132931. [PMID: 26186695 PMCID: PMC4505889 DOI: 10.1371/journal.pone.0132931] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 06/20/2015] [Indexed: 01/08/2023] Open
Abstract
Brassicales species rich in glucosinolates are used for biofumigation, a process based on releasing enzymatically toxic isothiocyanates into the soil. These hydrolysis products are volatile and often reactive compounds. Moreover, glucosinolates can be degraded also without the presence of the hydrolytic enzyme myrosinase which might contribute to bioactive effects. Thus, in the present study the stability of Brassicaceae plant-derived and pure glucosinolates hydrolysis products was studied using three different soils (model biofumigation). In addition, the degradation of pure 2-propenyl glucosinolate was investigated with special regard to the formation of volatile breakdown products. Finally, the influence of pure glucosinolate degradation on the bacterial community composition was evaluated using denaturing gradient gel electrophoresis of 16S rRNA gene amplified from total community DNA. The model biofumigation study revealed that the structure of the hydrolysis products had a significant impact on their stability in the soil but not the soil type. Following the degradation of pure 2-propenyl glucosinolate in the soils, the nitrile as well as the isothiocyanate can be the main degradation products, depending on the soil type. Furthermore, the degradation was shown to be both chemically as well as biologically mediated as autoclaving reduced degradation. The nitrile was the major product of the chemical degradation and its formation increased with iron content of the soil. Additionally, the bacterial community composition was significantly affected by adding pure 2-propenyl glucosinolate, the effect being more pronounced than in treatments with myrosinase added to the glucosinolate. Therefore, glucosinolates can have a greater effect on soil bacterial community composition than their hydrolysis products.
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Affiliation(s)
- Franziska S. Hanschen
- Department of Quality, Leibniz-Institute of Vegetable and Ornamental Crops Grossbeeren/Erfurt e.V., Theodor-Echtermeyer-Weg 1, D-14979 Grossbeeren, Germany
| | - Bunlong Yim
- Institute of Horticultural Production Systems, Leibniz Universität Hannover, Section of Woody Plant and Propagation Physiology, Herrenhäuser Str. 2, D-30419 Hannover, Germany
- Institute for Epidemiology and Pathogen Diagnostics, Julius Kühn-Institut – Federal Research Centre for Cultivated Plants (JKI), Messeweg 11–12, D-38104 Braunschweig, Germany
| | - Traud Winkelmann
- Institute of Horticultural Production Systems, Leibniz Universität Hannover, Section of Woody Plant and Propagation Physiology, Herrenhäuser Str. 2, D-30419 Hannover, Germany
| | - Kornelia Smalla
- Institute for Epidemiology and Pathogen Diagnostics, Julius Kühn-Institut – Federal Research Centre for Cultivated Plants (JKI), Messeweg 11–12, D-38104 Braunschweig, Germany
| | - Monika Schreiner
- Department of Quality, Leibniz-Institute of Vegetable and Ornamental Crops Grossbeeren/Erfurt e.V., Theodor-Echtermeyer-Weg 1, D-14979 Grossbeeren, Germany
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Witzel K, Hanschen FS, Klopsch R, Ruppel S, Schreiner M, Grosch R. Verticillium longisporum infection induces organ-specific glucosinolate degradation in Arabidopsis thaliana. FRONTIERS IN PLANT SCIENCE 2015; 6:508. [PMID: 26217360 PMCID: PMC4498036 DOI: 10.3389/fpls.2015.00508] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Accepted: 06/25/2015] [Indexed: 05/03/2023]
Abstract
The species Verticillium represents a group of highly destructive fungal pathogens, responsible for vascular wilt in a number of crops. The host response to infection by Verticillium longisporum at the level of secondary plant metabolites has not been well explored. Natural variation in the glucosinolate (GLS) composition of four Arabidopsis thaliana accessions was characterized: the accessions Bur-0 and Hi-0 accumulated alkenyl GLS, while 3-hydroxypropyl GLS predominated in Kn-0 and Ler-0. With respect to GLS degradation products, Hi-0 and Kn-0 generated mainly isothiocyanates, whereas Bur-0 released epithionitriles and Ler-0 nitriles. An analysis of the effect on the composition of both GLS and its breakdown products in the leaf and root following the plants' exposure to V. longisporum revealed a number of organ- and accession-specific alterations. In the less disease susceptible accessions Bur-0 and Ler-0, colonization depressed the accumulation of GLS in the rosette leaves but accentuated it in the roots. In contrast, in the root, the level of GLS breakdown products in three of the four accessions fell, suggestive of their conjugation or binding to a fungal target molecule(s). The plant-pathogen interaction influenced both the organ- and accession-specific formation of GLS degradation products.
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Affiliation(s)
- Katja Witzel
- *Correspondence: Katja Witzel, Leibniz Institute of Vegetable and Ornamental Crops, Theodor-Echtermeyer-Weg 1, 14979 Grossbeeren, Germany,
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Wang Z, Yang R, Guo L, Fang M, Zhou Y, Gu Z. Effects of abscisic acid on glucosinolate content, isothiocyanate formation and myrosinase activity in cabbage sprouts. Int J Food Sci Technol 2015. [DOI: 10.1111/ijfs.12848] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Zhiying Wang
- College of Food Science and Technology; Nanjing Agricultural University; Nanjing Jiangsu 210095 China
| | - Runqiang Yang
- College of Food Science and Technology; Nanjing Agricultural University; Nanjing Jiangsu 210095 China
| | - Liping Guo
- College of Food Science and Technology; Nanjing Agricultural University; Nanjing Jiangsu 210095 China
- College of Food Science and Engineering; Qingdao Agricultural University; Qingdao Shandong 266109 China
| | - Mengwei Fang
- College of Food Science and Technology; Nanjing Agricultural University; Nanjing Jiangsu 210095 China
| | - Yulin Zhou
- College of Food Science and Technology; Nanjing Agricultural University; Nanjing Jiangsu 210095 China
| | - Zhenxin Gu
- College of Food Science and Technology; Nanjing Agricultural University; Nanjing Jiangsu 210095 China
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Witzel K, Neugart S, Ruppel S, Schreiner M, Wiesner M, Baldermann S. Recent progress in the use of 'omics technologies in brassicaceous vegetables. FRONTIERS IN PLANT SCIENCE 2015; 6:244. [PMID: 25926843 PMCID: PMC4396356 DOI: 10.3389/fpls.2015.00244] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Accepted: 03/26/2015] [Indexed: 05/21/2023]
Abstract
Continuing advances in 'omics methodologies and instrumentation is enhancing the understanding of how plants cope with the dynamic nature of their growing environment. 'Omics platforms have been only recently extended to cover horticultural crop species. Many of the most widely cultivated vegetable crops belong to the genus Brassica: these include plants grown for their root (turnip, rutabaga/swede), their swollen stem base (kohlrabi), their leaves (cabbage, kale, pak choi) and their inflorescence (cauliflower, broccoli). Characterization at the genome, transcript, protein and metabolite levels has illustrated the complexity of the cellular response to a whole series of environmental stresses, including nutrient deficiency, pathogen attack, heavy metal toxicity, cold acclimation, and excessive and sub-optimal irradiation. This review covers recent applications of 'omics technologies to the brassicaceous vegetables, and discusses future scenarios in achieving improvements in crop end-use quality.
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Affiliation(s)
- Katja Witzel
- Leibniz-Institute of Vegetable and Ornamental Crops Großbeeren/Erfurt e.V.Großbeeren, Germany
| | - Susanne Neugart
- Leibniz-Institute of Vegetable and Ornamental Crops Großbeeren/Erfurt e.V.Großbeeren, Germany
| | - Silke Ruppel
- Leibniz-Institute of Vegetable and Ornamental Crops Großbeeren/Erfurt e.V.Großbeeren, Germany
| | - Monika Schreiner
- Leibniz-Institute of Vegetable and Ornamental Crops Großbeeren/Erfurt e.V.Großbeeren, Germany
| | - Melanie Wiesner
- Leibniz-Institute of Vegetable and Ornamental Crops Großbeeren/Erfurt e.V.Großbeeren, Germany
| | - Susanne Baldermann
- Leibniz-Institute of Vegetable and Ornamental Crops Großbeeren/Erfurt e.V.Großbeeren, Germany
- Institute of Nutritional Science, University of PotsdamNuthetal, Germany
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Hanschen FS, Lamy E, Schreiner M, Rohn S. Reactivity and stability of glucosinolates and their breakdown products in foods. Angew Chem Int Ed Engl 2014; 53:11430-50. [PMID: 25163974 DOI: 10.1002/anie.201402639] [Citation(s) in RCA: 200] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Indexed: 12/25/2022]
Abstract
The chemistry of glucosinolates and their behavior during food processing is very complex. Their instability leads to the formation of a bunch of breakdown and reaction products that are very often reactive themselves. Although excessive consumption of cabbage varieties has been thought for long time to have adverse, especially goitrogenic effects, nowadays, epidemiologic studies provide data that there might be beneficial health effects as well. Especially Brassica vegetables, such as broccoli, radish, or cabbage, are rich in these interesting plant metabolites. However, information on the bioactivity of glucosinolates is only valuable when one knows which compounds are formed during processing and subsequent consumption. This review provides a comprehensive, in-depth overview on the chemical reactivity of different glucosinolates and breakdown products thereof during food preparation.
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Affiliation(s)
- Franziska S Hanschen
- Department of Quality, Leibniz-Institute of Vegetable and Ornamental Crops Großbeeren and Erfurt e.V. Theodor-Echtermeyer-Weg 1, 14979 Großbeeren (Germany) http://www.igzev.de.
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Hanschen FS, Lamy E, Schreiner M, Rohn S. Reaktivität und Stabilität von Glucosinolaten und ihren Abbauprodukten in Lebensmitteln. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402639] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Wiesner M, Schreiner M, Zrenner R. Functional identification of genes responsible for the biosynthesis of 1-methoxy-indol-3-ylmethyl-glucosinolate in Brassica rapa ssp. chinensis. BMC PLANT BIOLOGY 2014; 14:124. [PMID: 24886080 PMCID: PMC4108037 DOI: 10.1186/1471-2229-14-124] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Accepted: 04/24/2014] [Indexed: 05/29/2023]
Abstract
BACKGROUND Brassica vegetables contain a class of secondary metabolites, the glucosinolates (GS), whose specific degradation products determine the characteristic flavor and smell. While some of the respective degradation products of particular GS are recognized as health promoting substances for humans, recent studies also show evidence that namely the 1-methoxy-indol-3-ylmethyl GS might be deleterious by forming characteristic DNA adducts. Therefore, a deeper knowledge of aspects involved in the biosynthesis of indole GS is crucial to design vegetables with an improved secondary metabolite profile. RESULTS Initially the leafy Brassica vegetable pak choi (Brassica rapa ssp. chinensis) was established as suitable tool to elicit very high concentrations of 1-methoxy-indol-3-ylmethyl GS by application of methyl jasmonate. Differentially expressed candidate genes were discovered in a comparative microarray analysis using the 2 × 104 K format Brassica Array and compared to available gene expression data from the Arabidopsis AtGenExpress effort. Arabidopsis knock out mutants of the respective candidate gene homologs were subjected to a comprehensive examination of their GS profiles and confirmed the exclusive involvement of polypeptide 4 of the cytochrome P450 monooxygenase subfamily CYP81F in 1-methoxy-indol-3-ylmethyl GS biosynthesis. Functional characterization of the two identified isoforms coding for CYP81F4 in the Brassica rapa genome was performed using expression analysis and heterologous complementation of the respective Arabidopsis mutant. CONCLUSIONS Specific differences discovered in a comparative microarray and glucosinolate profiling analysis enables the functional attribution of Brassica rapa ssp. chinensis genes coding for polypeptide 4 of the cytochrome P450 monooxygenase subfamily CYP81F to their metabolic role in indole glucosinolate biosynthesis. These new identified Brassica genes will enable the development of genetic tools for breeding vegetables with improved GS composition in the near future.
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Affiliation(s)
- Melanie Wiesner
- Leibniz-Institute of Vegetable and Ornamental Crops Grossbeeren and Erfurt e.V., Theodor-Echtermeyer-Weg 1, 14979 Grossbeeren, Germany
| | - Monika Schreiner
- Leibniz-Institute of Vegetable and Ornamental Crops Grossbeeren and Erfurt e.V., Theodor-Echtermeyer-Weg 1, 14979 Grossbeeren, Germany
| | - Rita Zrenner
- Leibniz-Institute of Vegetable and Ornamental Crops Grossbeeren and Erfurt e.V., Theodor-Echtermeyer-Weg 1, 14979 Grossbeeren, Germany
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Wiesner M, Schreiner M, Glatt H. High mutagenic activity of juice from pak choi (Brassica rapa ssp. chinensis) sprouts due to its content of 1-methoxy-3-indolylmethyl glucosinolate, and its enhancement by elicitation with methyl jasmonate. Food Chem Toxicol 2014; 67:10-6. [PMID: 24530313 DOI: 10.1016/j.fct.2014.02.008] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Revised: 02/05/2014] [Accepted: 02/06/2014] [Indexed: 12/17/2022]
Abstract
Cruciferous vegetables have the reputation to protect against cancer, an effect attributed to glucosinolates (GLS) and their breakdown products. However, some GLS are mutagenic, an activity associated with cancer initiation rather than chemoprevention. We show that juices from steamed pak choi sprouts are strongly mutagenic in Salmonella typhimurium TA100 upon addition of fresh myrosinase. Growth of the plants in the presence of methyl jasmonate, a hormone eliciting defence factors, led to 20-fold enhanced mutagenic activity. The level of 1-methoxy-3-indolylmethyl (1-MIM)-GLS was similarly increased, whereas those of other GLS were only elevated 0.8- to 3.2-fold. 1-MIM-GLS is a potent mutagen, whose activity is further enhanced by human sulphotransferase 1A1 (hSULT1A1), an activation not observed with other GLS. The mutagenicity of the pak choi juices was increased 20-fold in bacteria expressing hSULT1A1. A tiny level of juice from elicitated sprouts, 0.04% in the mutagenicity assay, was sufficient to double the number of revertants above the spontaneous level. We conclude that pak choi juice is mutagenic, an activity that can be strongly affected by the growth conditions. It is owed essentially to a single component, 1-MIM-GLS. We recommend using cultivars, growth conditions and/or food preparations that keep the level of this GLS congener low.
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Affiliation(s)
- Melanie Wiesner
- Leibniz-Institute of Vegetable and Ornamental Crops Grossbeeren and Erfurt e.V., Department of Quality Research, Theodor-Echtermeyer-Weg 1, 14979 Grossbeeren, Germany; German Institute of Human Nutrition Potsdam-Rehbrücke, Department of Nutritional Toxicology, Arthur-Scheunert-Allee 114-116, 14558 Nuthetal, Germany
| | - Monika Schreiner
- Leibniz-Institute of Vegetable and Ornamental Crops Grossbeeren and Erfurt e.V., Department of Quality Research, Theodor-Echtermeyer-Weg 1, 14979 Grossbeeren, Germany
| | - Hansruedi Glatt
- German Institute of Human Nutrition Potsdam-Rehbrücke, Department of Nutritional Toxicology, Arthur-Scheunert-Allee 114-116, 14558 Nuthetal, Germany.
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Lippmann D, Lehmann C, Florian S, Barknowitz G, Haack M, Mewis I, Wiesner M, Schreiner M, Glatt H, Brigelius-Flohé R, Kipp AP. Glucosinolates from pak choi and broccoli induce enzymes and inhibit inflammation and colon cancer differently. Food Funct 2014; 5:1073-81. [DOI: 10.1039/c3fo60676g] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Feeding a glucosinolate-enriched pak choi diet reduced colitis and tumor numbers. No effects were observed by a glucosinolate-enriched broccoli diet.
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Affiliation(s)
- Doris Lippmann
- German Institute of Human Nutrition Potsdam-Rehbruecke
- D-14558 Nuthetal, Germany
| | - Carsten Lehmann
- German Institute of Human Nutrition Potsdam-Rehbruecke
- D-14558 Nuthetal, Germany
| | - Simone Florian
- German Institute of Human Nutrition Potsdam-Rehbruecke
- D-14558 Nuthetal, Germany
| | - Gitte Barknowitz
- German Institute of Human Nutrition Potsdam-Rehbruecke
- D-14558 Nuthetal, Germany
| | - Michael Haack
- German Institute of Human Nutrition Potsdam-Rehbruecke
- D-14558 Nuthetal, Germany
| | - Inga Mewis
- Leibniz-Institute of Vegetable and Ornamental Crops
- Grossbeeren and Erfurt e.V
- Germany
| | - Melanie Wiesner
- Leibniz-Institute of Vegetable and Ornamental Crops
- Grossbeeren and Erfurt e.V
- Germany
| | - Monika Schreiner
- Leibniz-Institute of Vegetable and Ornamental Crops
- Grossbeeren and Erfurt e.V
- Germany
| | - Hansruedi Glatt
- German Institute of Human Nutrition Potsdam-Rehbruecke
- D-14558 Nuthetal, Germany
| | | | - Anna P. Kipp
- German Institute of Human Nutrition Potsdam-Rehbruecke
- D-14558 Nuthetal, Germany
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A secondary metabolite of Brassicales, 1-methoxy-3-indolylmethyl glucosinolate, as well as its degradation product, 1-methoxy-3-indolylmethyl alcohol, forms DNA adducts in the mouse, but in varying tissues and cells. Arch Toxicol 2013; 88:823-36. [PMID: 24154822 DOI: 10.1007/s00204-013-1149-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Accepted: 10/10/2013] [Indexed: 10/26/2022]
Abstract
1-Methoxy-3-indolylmethyl (1-MIM) glucosinolate, a secondary metabolite of Brassicales species, and its breakdown product 1-MIM alcohol are mutagenic in cells in culture after activation by plant β-thioglucosidase and human sulphotransferase, respectively. In the present study, we administered these compounds orally to mice to study time course, dose dependence, tissue distribution and cellular localization of the 1-MIM DNA adducts formed. We used isotope-dilution ultra-performance liquid chromatography-tandem mass spectrometry to quantify the adducts and raised an antiserum for their immunohistochemical localization. Both compounds formed the same adducts, N(2)-(1-MIM)-2'-deoxyguanosine and N(6)-(1-MIM)-2'-deoxyadenosine, approximately in a 3.3:1 ratio. 1-MIM glucosinolate primarily formed these adducts in the large intestine, with a luminal-basal gradient, probably due to activation by thioglucosidase from intestinal bacteria. 1-MIM alcohol formed higher levels of adduct than the glucosinolate. Unlike after treatment with the glucosinolate, luminal and basal enterocytes were similarly affected in caecum, and liver and stomach were additional important target tissues. Maximal adduct levels were reached 8 h after the administration of both compounds. The hepatic DNA adducts persisted for the entire observation period (48 h), whereas those in large intestine rapidly declined due to cell turnover, as verified by immunohistochemistry. Hepatic adduct formation was focused on the periportal hepatocytes with concomitant depletion of glycogen, p53 activation and p21 induction. Adduct formation in caecum was associated with massive apoptosis, p53 activation and p21 induction, in particular after treatment with 1-MIM alcohol. It remains to be studied whether similar effects occur in humans after the consumption of Brassicales species.
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