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Pagliari S, Cannavacciuolo C, Celano R, Carabetta S, Russo M, Labra M, Campone L. Valorisation, Green Extraction Development, and Metabolomic Analysis of Wild Artichoke By-Product Using Pressurised Liquid Extraction UPLC-HRMS and Multivariate Data Analysis. Molecules 2022; 27:7157. [PMID: 36363983 PMCID: PMC9656714 DOI: 10.3390/molecules27217157] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 10/17/2022] [Accepted: 10/18/2022] [Indexed: 08/13/2023] Open
Abstract
Valorisation of food by-products has recently attracted considerable attention due to the opportunities to improve the economic and environmental sustainability of the food production chain. Large quantities of non-edible parts of the artichoke plant (Cynara cardunculus L.) comprising leaves, stems, roots, bracts, and seeds are discarded annually during industrial processing. These by-products contain many phytochemicals such as dietary fibres, phenolic acids, and flavonoids, whereby the most challenging issue concerns about the recovery of high-added value components from these by-products. The aim of this work is to develop a novel valorisation strategy for the sustainable utilisation of artichoke leaves' waste, combining green pressurised-liquid extraction (PLE), spectrophotometric assays and UPLC-HRMS phytochemical characterization, to obtain bioactive-rich extract with high antioxidant capacity. Multivariate analysis of the major selected metabolites was used to compare different solvent extraction used in PLE.
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Affiliation(s)
- Stefania Pagliari
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza Della Scienza 2, 20126 Milano, Italy
| | - Ciro Cannavacciuolo
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza Della Scienza 2, 20126 Milano, Italy
| | - Rita Celano
- Department of Pharmacy, University of Salerno, Via Giovanni Paola II 132, Fisciano, 84084 Salerno, Italy
| | - Sonia Carabetta
- Safety and Sensoromic Laboratory (FoCuSS Lab), Department of Agriculture Science, Food Chemistry, University of Reggio Calabria, Via dell’Università 25, 89124 Reggio Calabria, Italy
| | - Mariateresa Russo
- Safety and Sensoromic Laboratory (FoCuSS Lab), Department of Agriculture Science, Food Chemistry, University of Reggio Calabria, Via dell’Università 25, 89124 Reggio Calabria, Italy
| | - Massimo Labra
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza Della Scienza 2, 20126 Milano, Italy
| | - Luca Campone
- Department of Biotechnology and Biosciences, University of Milano-Bicocca, Piazza Della Scienza 2, 20126 Milano, Italy
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Paolo D, Locatelli F, Cominelli E, Pirona R, Pozzo S, Graziani G, Ritieni A, De Palma M, Docimo T, Tucci M, Sparvoli F. Towards a Cardoon ( Cynara cardunculus var. altilis)-Based Biorefinery: A Case Study of Improved Cell Cultures via Genetic Modulation of the Phenylpropanoid Pathway. Int J Mol Sci 2021; 22:ijms222111978. [PMID: 34769407 PMCID: PMC8584892 DOI: 10.3390/ijms222111978] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Revised: 11/02/2021] [Accepted: 11/03/2021] [Indexed: 12/13/2022] Open
Abstract
Cultivated cardoon (Cynara cardunculus var. altilis L.) is a promising candidate species for the development of plant cell cultures suitable for large-scale biomass production and recovery of nutraceuticals. We set up a protocol for Agrobacterium tumefaciens-mediated transformation, which can be used for the improvement of cardoon cell cultures in a frame of biorefinery. As high lignin content determines lower saccharification yields for the biomass, we opted for a biotechnological approach, with the purpose of reducing lignin content; we generated transgenic lines overexpressing the Arabidopsis thaliana MYB4 transcription factor, a known repressor of lignin/flavonoid biosynthesis. Here, we report a comprehensive characterization, including metabolic and transcriptomic analyses of AtMYB4 overexpression cardoon lines, in comparison to wild type, underlining favorable traits for their use in biorefinery. Among these, the improved accessibility of the lignocellulosic biomass to degrading enzymes due to depletion of lignin content, the unexpected increased growth rates, and the valuable nutraceutical profiles, in particular for hydroxycinnamic/caffeoylquinic and fatty acids profiles.
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Affiliation(s)
- Dario Paolo
- National Research Council—Institute of Agricultural Biology and Biotechnology (CNR-IBBA), Via Edoardo Bassini 15, 20133 Milano, Italy; (F.L.); (E.C.); (R.P.); (S.P.)
- Correspondence: (D.P.); (F.S.); Tel.: +39-0223699407 (D.P.); +39-0223699435 (F.S.)
| | - Franca Locatelli
- National Research Council—Institute of Agricultural Biology and Biotechnology (CNR-IBBA), Via Edoardo Bassini 15, 20133 Milano, Italy; (F.L.); (E.C.); (R.P.); (S.P.)
| | - Eleonora Cominelli
- National Research Council—Institute of Agricultural Biology and Biotechnology (CNR-IBBA), Via Edoardo Bassini 15, 20133 Milano, Italy; (F.L.); (E.C.); (R.P.); (S.P.)
| | - Raul Pirona
- National Research Council—Institute of Agricultural Biology and Biotechnology (CNR-IBBA), Via Edoardo Bassini 15, 20133 Milano, Italy; (F.L.); (E.C.); (R.P.); (S.P.)
| | - Sara Pozzo
- National Research Council—Institute of Agricultural Biology and Biotechnology (CNR-IBBA), Via Edoardo Bassini 15, 20133 Milano, Italy; (F.L.); (E.C.); (R.P.); (S.P.)
| | - Giulia Graziani
- Department of Pharmacy—University of Naples Federico II (UNINA), Via Domenico Montesano 49, 80131 Naples, Italy; (G.G.); (A.R.)
| | - Alberto Ritieni
- Department of Pharmacy—University of Naples Federico II (UNINA), Via Domenico Montesano 49, 80131 Naples, Italy; (G.G.); (A.R.)
| | - Monica De Palma
- National Research Council—Institute of Bioscience and Bioresources (CNR-IBBR), Via Università 133, 80055 Portici, Italy; (M.D.P.); (T.D.); (M.T.)
| | - Teresa Docimo
- National Research Council—Institute of Bioscience and Bioresources (CNR-IBBR), Via Università 133, 80055 Portici, Italy; (M.D.P.); (T.D.); (M.T.)
| | - Marina Tucci
- National Research Council—Institute of Bioscience and Bioresources (CNR-IBBR), Via Università 133, 80055 Portici, Italy; (M.D.P.); (T.D.); (M.T.)
| | - Francesca Sparvoli
- National Research Council—Institute of Agricultural Biology and Biotechnology (CNR-IBBA), Via Edoardo Bassini 15, 20133 Milano, Italy; (F.L.); (E.C.); (R.P.); (S.P.)
- Correspondence: (D.P.); (F.S.); Tel.: +39-0223699407 (D.P.); +39-0223699435 (F.S.)
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Scavo A, Rial C, Molinillo JMG, Varela RM, Mauromicale G, Macı As FA. Effect of Shading on the Sesquiterpene Lactone Content and Phytotoxicity of Cultivated Cardoon Leaf Extracts. J Agric Food Chem 2020; 68:11946-11953. [PMID: 33052675 DOI: 10.1021/acs.jafc.0c03527] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The work described here follows on from a previous study focused on the influence of the genotype and harvest time on the sesquiterpene lactone (STL) profile of Cynara cardunculus L. leaf extracts. The aim of this study was to investigate the effect that 60% plant shading in cultivated cardoon (C. cardunculus var. altilis) leaf extracts harvested in winter and spring had on the composition of STLs and the phytotoxicity. The phytotoxicity of leaf extracts was evaluated by assessing wheat coleoptile elongation along with seed germination and the root and shoot length of the weeds Amaranthus retroflexus L. and Portulaca oleracea L. Shading increased the production of STLs in spring, and this effect correlated positively with the phytotoxic activity. The induction of shading can therefore be used to modulate STL concentrations and their phytotoxic potential in cultivated cardoon leaves for industrial applications.
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Affiliation(s)
- Aurelio Scavo
- Department of Agriculture, Food and Environment (Di3A), University of Catania, via Valdisavoia, 5, 95123 Catania, Italy
| | - Carlos Rial
- Allelopathy Group, Department of Organic Chemistry, Institute of Biomolecules (INBIO), Campus de Excelencia Internacional (ceiA3), School of Science, University of Cadiz, C/República Saharaui n° 7, Puerto Real, Cadiz 11510, Spain
| | - José M G Molinillo
- Allelopathy Group, Department of Organic Chemistry, Institute of Biomolecules (INBIO), Campus de Excelencia Internacional (ceiA3), School of Science, University of Cadiz, C/República Saharaui n° 7, Puerto Real, Cadiz 11510, Spain
| | - Rosa M Varela
- Allelopathy Group, Department of Organic Chemistry, Institute of Biomolecules (INBIO), Campus de Excelencia Internacional (ceiA3), School of Science, University of Cadiz, C/República Saharaui n° 7, Puerto Real, Cadiz 11510, Spain
| | - Giovanni Mauromicale
- Department of Agriculture, Food and Environment (Di3A), University of Catania, via Valdisavoia, 5, 95123 Catania, Italy
| | - Francisco Antonio Macı As
- Allelopathy Group, Department of Organic Chemistry, Institute of Biomolecules (INBIO), Campus de Excelencia Internacional (ceiA3), School of Science, University of Cadiz, C/República Saharaui n° 7, Puerto Real, Cadiz 11510, Spain
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Miklavčič Višnjevec A, Schwarzkopf M. Phenolic Compounds in Poorly Represented Mediterranean Plants in Istria: Health Impacts and Food Authentication. Molecules 2020; 25:E3645. [PMID: 32785191 PMCID: PMC7466117 DOI: 10.3390/molecules25163645] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 08/06/2020] [Accepted: 08/06/2020] [Indexed: 02/06/2023] Open
Abstract
Phenolic compounds are well-known bioactive compounds in plants that can have a protective role against cancers, cardiovascular diseases and many other diseases. To promote local food development, a comprehensive overview of the phenolic compounds' composition and their impact on human health from typical Mediterranean plants such as Punica granatum L., Ziziphus jujuba Mill., Arbutus unedo L., Celtis australis L., Ficus carica L., Cynara cardunculus var. Scolymus L. is provided. Moreover, the potential use of these data for authenticity determination is discussed. Some of the plants' phenolic compounds and their impact to human health are very well determined, while for others, the data are scarce. However, in all cases, more data should be available about the content, profile and health impacts due to a high variation of phenolic compounds depending on genetic and environmental factors. Quantifying variation in phenolic compounds in plants relative to genetic and environmental factors could be a useful tool in food authentication control. More comprehensive studies should be conducted to better understand the importance of phenolic compounds on human health and their variation in certain plants.
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Affiliation(s)
- Ana Miklavčič Višnjevec
- Natural Sciences and Information Technologies, Glagoljaška 8, Faculty of Mathematics, University of Primorska, SI-6000 Koper, Slovenia;
| | - Matthew Schwarzkopf
- Natural Sciences and Information Technologies, Glagoljaška 8, Faculty of Mathematics, University of Primorska, SI-6000 Koper, Slovenia;
- InnoRenew CoE, Livade 6, 6310 Izola, Slovenia
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Folgado A, Pires AS, Figueiredo AC, Pimentel C, Abranches R. Toward alternative sources of milk coagulants for cheese manufacturing: establishment of hairy roots culture and protease characterization from Cynara cardunculus L. Plant Cell Rep 2020; 39:89-100. [PMID: 31583429 DOI: 10.1007/s00299-019-02475-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 09/23/2019] [Indexed: 06/10/2023]
Abstract
Extracts from hairy root cultures of Cynara cardunculus L. contain proteases and show milk-clotting activity. Cynara cardunculus L. or cardoon is often used as rennet in traditional cheese manufacturing, due to the presence of specific proteases in the flower. However, the flower extracts are variable depending on the provenance and quality of the flowers as well as high genetic variability among cardoon populations, and this affects the quality of the final product. In search for alternative sources of milk-clotting enzymes, hairy root cultures from cardoon were obtained and characterized regarding their protease content and proteolytic activity toward milk proteins. Aspartic, serine and cysteine proteases were identified in hairy roots by mass spectrometry analysis and an azocasein assay combined with specific inhibitors. RT-PCR analysis revealed the expression of cardosin A and D, and immunoblotting analysis suggested the presence of cardosin A or cardosin A-like enzyme in its mature form, supporting this system as an alternative source of cardosins. Hairy root protein extracts showed activity over caseins, supporting its use as milk coagulant, which was further tested by milk-clotting assays. This is also the first report on the establishment of hairy root cultures from cardoon, which paves the way for future work on controlled platforms for production of valuable metabolites which are known to be present in this species.
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Affiliation(s)
- André Folgado
- Plant Cell Biology Laboratory, Instituto de Tecnologia Química e Biológica António Xavier (ITQB NOVA), Universidade Nova de Lisboa, 2780-157, Oeiras, Portugal
| | - Ana Sofia Pires
- Plant Cell Biology Laboratory, Instituto de Tecnologia Química e Biológica António Xavier (ITQB NOVA), Universidade Nova de Lisboa, 2780-157, Oeiras, Portugal
| | - Ana Cristina Figueiredo
- Faculdade de Ciências da Universidade de Lisboa, Centro de Estudos do Ambiente e do Mar (CESAM Lisboa), Centro de Biotecnologia Vegetal (CBV), 1749-016, Lisbon, Portugal
| | - Catarina Pimentel
- Genomics and Stress Laboratory, Instituto de Tecnologia Química e Biológica António Xavier (ITQB NOVA), Universidade Nova de Lisboa, 2780-157, Oeiras, Portugal
| | - Rita Abranches
- Plant Cell Biology Laboratory, Instituto de Tecnologia Química e Biológica António Xavier (ITQB NOVA), Universidade Nova de Lisboa, 2780-157, Oeiras, Portugal.
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Scavo A, Rial C, Varela RM, Molinillo JMG, Mauromicale G, Macias FA. Influence of Genotype and Harvest Time on the Cynara cardunculus L. Sesquiterpene Lactone Profile. J Agric Food Chem 2019; 67:6487-6496. [PMID: 31094509 DOI: 10.1021/acs.jafc.9b02313] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The excessive and inappropriate application of herbicides has caused environmental pollution. The use of allelochemicals as bioherbicides could provide a solution to this problem. The allelopathic activity of Cynara cardunculus L. has been studied previously, and sesquiterpene lactones (STLs) were identified as the most relevant allelochemicals. The goal of the study reported here was to investigate the effect of six genotypes and three harvest times on the qualitative and quantitative composition of STLs in C. cardunculus leaves through a new ultra-high-performance liquid chromatography-tandem mass spectrometry analysis method and, thus, the effect on phytotoxicity. Overall, wild cardoon contained the highest levels of STLs of the three botanical varieties studied. Nevertheless, climatic conditions had a marked influence on the presence of STLs among the six genotypes, which was higher in the April harvest. Cynaropicrin was the most abundant STL detected. A close relationship was found between the STL profiles and the allelopathic activity, expressed as inhibition of wheat coleoptile elongation. The data provide a new and important contribution to our understanding of C. cardunculus allelopathy.
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Affiliation(s)
- Aurelio Scavo
- Department of Agriculture, Food and Environment (Di3A) , University of Catania , Via Valdisavoia 5 , 95123 Catania , Italy
| | - Carlos Rial
- Allelopathy Group, Department of Organic Chemistry, Institute of Biomolecules (INBIO), Campus de Excelencia Internacional (ceiA3), School of Science , University of Cádiz , Calle República Saharaui 7 , 11510 Puerto Real , Cádiz , Spain
| | - Rosa Maria Varela
- Allelopathy Group, Department of Organic Chemistry, Institute of Biomolecules (INBIO), Campus de Excelencia Internacional (ceiA3), School of Science , University of Cádiz , Calle República Saharaui 7 , 11510 Puerto Real , Cádiz , Spain
| | - José Maria Gonzalez Molinillo
- Allelopathy Group, Department of Organic Chemistry, Institute of Biomolecules (INBIO), Campus de Excelencia Internacional (ceiA3), School of Science , University of Cádiz , Calle República Saharaui 7 , 11510 Puerto Real , Cádiz , Spain
| | - Giovanni Mauromicale
- Department of Agriculture, Food and Environment (Di3A) , University of Catania , Via Valdisavoia 5 , 95123 Catania , Italy
| | - Francisco Antonio Macias
- Allelopathy Group, Department of Organic Chemistry, Institute of Biomolecules (INBIO), Campus de Excelencia Internacional (ceiA3), School of Science , University of Cádiz , Calle República Saharaui 7 , 11510 Puerto Real , Cádiz , Spain
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Vergara P, Ladero M, García-Ochoa F, Villar JC. Pre-treatment of corn stover, Cynara cardunculus L. stems and wheat straw by ethanol-water and diluted sulfuric acid: Comparison under different energy input conditions. Bioresour Technol 2018; 270:449-456. [PMID: 30245314 DOI: 10.1016/j.biortech.2018.09.058] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2018] [Revised: 09/10/2018] [Accepted: 09/11/2018] [Indexed: 06/08/2023]
Abstract
Ethanol-water (EW) and diluted sulfuric acid (DSA) pre-treatment have been studied for lignocellulosic biomass (corn stover, Cynara cardunculus L. stems and wheat straw). Both pre-treatments have been compared taken into account: solids recovery, glucans recovery, xylans removed, delignification and glucose yield. In all cases, the amount of energy involved has been taken as a criterion for sustainability. In general terms, EW is more efficient to remove lignin and DSA more appropriate to hydrolysate xylans. The combined effect of delignification and xylans removal is responsible for the improvement in the enzymatic cellulose hydrolysis. Under conditions of moderate-low energy inputs, EW pre-treatment yields better results than DSA with glucose yields in the range of 50-60% for EW pre-treated corn stover and cardoon stems; while wheat straw pulps reach up to 80%. So, multiple raw materials biorefinery needs a previous study to fit the type and conditions of the pre-treatment to each feedstock.
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Affiliation(s)
- Priscilla Vergara
- Laboratory of Cellulose and Paper, Forest Research Center - INIA, Ctra. de La Coruña km 7.5, 28040 Madrid, Spain
| | - Miguel Ladero
- Chemical & Materials Engineering Department, Faculty of Chemistry, Universidad Complutense, 28040 Madrid, Spain
| | - Felix García-Ochoa
- Chemical & Materials Engineering Department, Faculty of Chemistry, Universidad Complutense, 28040 Madrid, Spain
| | - Juan C Villar
- Laboratory of Cellulose and Paper, Forest Research Center - INIA, Ctra. de La Coruña km 7.5, 28040 Madrid, Spain.
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Sorrentino MC, Capozzi F, Amitrano C, Giordano S, Arena C, Spagnuolo V. Performance of three cardoon cultivars in an industrial heavy metal-contaminated soil: Effects on morphology, cytology and photosynthesis. J Hazard Mater 2018; 351:131-137. [PMID: 29529561 DOI: 10.1016/j.jhazmat.2018.02.044] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 02/21/2018] [Accepted: 02/23/2018] [Indexed: 05/23/2023]
Abstract
In the present work the cytomorphological and physiological effects on three cardoon cultivars - Sardo, Siciliano, Spagnolo - grown in a metal-polluted soil, were investigated, to assess the traits concurring to the high tolerance to metal stress observed in cv. Spagnolo compared to the other two cultivars. The plants were grown for one month on a real polluted soil collected at a dismantling battery plant, highly enriched by heavy metals, especially Cd and Pb, and their leaves were analyzed by a multidisciplinary approach. TEM observations highlighted severe ultrastructural damage in Sardo and Siciliano, and preserved cytological traits in Spagnolo. Both pigment content and photochemistry indicated a decline in photosynthesis in Sardo and Sicilano and a substantial stability of the same parameters in Spagnolo. Protein analysis indicated a decrease in D1 level in all cultivars; in Spagnolo the D1 decrease was more pronounced and associated to a significant increase in Rubisco, a pattern likely preserving photosynthetic efficiency and high biomass production. In conclusion, Spagnolo cardoon was able to face metal stress through a prompt, multiple response balancing structural and functional traits.
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Affiliation(s)
- M C Sorrentino
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, via Cinthia 4, 80126, Napoli, Italy
| | - F Capozzi
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, via Cinthia 4, 80126, Napoli, Italy
| | - C Amitrano
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, via Cinthia 4, 80126, Napoli, Italy
| | - S Giordano
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, via Cinthia 4, 80126, Napoli, Italy
| | - C Arena
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, via Cinthia 4, 80126, Napoli, Italy.
| | - V Spagnuolo
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, via Cinthia 4, 80126, Napoli, Italy
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Arena C, Figlioli F, Sorrentino MC, Izzo LG, Capozzi F, Giordano S, Spagnuolo V. Ultrastructural, protein and photosynthetic alterations induced by Pb and Cd in Cynara cardunculus L., and its potential for phytoremediation. Ecotoxicol Environ Saf 2017; 145:83-89. [PMID: 28708985 DOI: 10.1016/j.ecoenv.2017.07.015] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 07/04/2017] [Accepted: 07/05/2017] [Indexed: 06/07/2023]
Abstract
The effects of cadmium and lead were investigated in Cynara cardunculus L. Plant uptake by root and shoot, changes in cell ultrastructure and photosynthetic efficiency, photosynthetic key protein levels, as well as regulation of stress-induced Hsp70 were examined. Cynara cardunculus accumulated Cd and Pb in their tissue, with a different trend for the two metals. The prompt translocation of Cd to the shoot may justify the ultrastructural injuries, especially observed in chloroplasts. However, Cd- treated plants did not show any decline in photochemistry; it is likely that Cd in shoot tissue triggers defense mechanisms, increasing the level of proteins involved in photosynthesis (i.e., Rubisco and D1 increased 7 and 4.5 fold respectively) as a compensatory response to neutralize chloroplast damage. The accumulation of Pb mainly in root, can explain the increase in Hsp70 level (23 folds) in this tissue. Pb reached the shoots, even at low amounts, causing an overall significant change in some photochemical parameters (QY and NPQ decreases and increases of 25%, respectively). The results suggest a higher sensitivity of C. cardunculus to Pb than Cd, although maximal photochemical efficiency suggests that this species seems to tolerate Pb and Cd and hence, it is a suitable candidate for phytoremediation.
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Affiliation(s)
- C Arena
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, Campus Monte S. Angelo, Via Cinthia 4, 80126 Napoli, Italy
| | - F Figlioli
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, Campus Monte S. Angelo, Via Cinthia 4, 80126 Napoli, Italy
| | - M C Sorrentino
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, Campus Monte S. Angelo, Via Cinthia 4, 80126 Napoli, Italy
| | - L G Izzo
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, Campus Monte S. Angelo, Via Cinthia 4, 80126 Napoli, Italy
| | - F Capozzi
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, Campus Monte S. Angelo, Via Cinthia 4, 80126 Napoli, Italy
| | - S Giordano
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, Campus Monte S. Angelo, Via Cinthia 4, 80126 Napoli, Italy.
| | - V Spagnuolo
- Dipartimento di Biologia, Università degli Studi di Napoli Federico II, Campus Monte S. Angelo, Via Cinthia 4, 80126 Napoli, Italy
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Ferro AM, Ramos P, Guerreiro O, Jerónimo E, Pires I, Capel C, Capel J, Lozano R, Duarte MF, Oliveira MM, Gonçalves S. Impact of novel SNPs identified in Cynara cardunculus genes on functionality of proteins regulating phenylpropanoid pathway and their association with biological activities. BMC Genomics 2017; 18:183. [PMID: 28212611 PMCID: PMC5314637 DOI: 10.1186/s12864-017-3534-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 02/02/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Cynara cardunculus L. offers a natural source of phenolic compounds with the predominant molecule being chlorogenic acid. Chlorogenic acid is gaining interest due to its involvement in various biological properties such as, antibacterial, antifungal, antioxidant, hepatoprotective, and anticarcinogenic activities. RESULTS In this work we screened a Cynara cardunculus collection for new allelic variants in key genes involved in the chlorogenic acid biosynthesis pathway. The target genes encode p-coumaroyl ester 3'-hydroxylase (C3'H) and hydroxycinnamoyl-CoA: quinate hydroxycinnamoyl transferase (HQT), both participating in the synthesis of chlorogenic acid. Using high-resolution melting, the C3'H gene proved to be highly conserved with only 4 haplotypes while, for HQT, 17 haplotypes were identified de novo. The putative influence of the identified polymorphisms in C3'H and HQT proteins was further evaluated using bioinformatics tools. We could identify some polymorphisms that may lead to protein conformational changes. Chlorogenic acid content, antioxidant and antithrombin activities were also evaluated in Cc leaf extracts and an association analysis was performed to assess a putative correlation between these traits and the identified polymorphisms. CONCLUSION In this work we identified allelic variants with putative impact on C3'H and HQT proteins which are significantly associated with chlorogenic acid content and antioxidant activity. Further study of these alleles should be explored to assess putative relevance as genetic markers correlating with Cynara cardunculus biological properties with further confirmation by functional analysis.
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Affiliation(s)
- Ana Margarida Ferro
- Centro de Biotecnologia Agrícola e Agro-Alimentar do Alentejo (CEBAL), Instituto Politécnico de Beja (IPBeja), Rua Pedro Soares, 7801-908 Beja, Portugal
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa (ITQB NOVA), Av. da República, 2781-901 Oeiras, Portugal
| | - Patrícia Ramos
- Centro de Biotecnologia Agrícola e Agro-Alimentar do Alentejo (CEBAL), Instituto Politécnico de Beja (IPBeja), Rua Pedro Soares, 7801-908 Beja, Portugal
- Centre for Research in Ceramics and Composite Materials (CICECO) and Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Olinda Guerreiro
- Centro de Biotecnologia Agrícola e Agro-Alimentar do Alentejo (CEBAL), Instituto Politécnico de Beja (IPBeja), Rua Pedro Soares, 7801-908 Beja, Portugal
- Centro de Investigação Interdisciplinar em Sanidade Animal (CIISA), Faculdade de Medicina Veterinária, University of Lisbon, Avenida da Universidade Técnica, 1300-477 Lisboa, Portugal
| | - Eliana Jerónimo
- Centro de Biotecnologia Agrícola e Agro-Alimentar do Alentejo (CEBAL), Instituto Politécnico de Beja (IPBeja), Rua Pedro Soares, 7801-908 Beja, Portugal
| | - Inês Pires
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa (ITQB NOVA), Av. da República, 2781-901 Oeiras, Portugal
| | - Carmen Capel
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL), Universidad de Almería, 04120 Almeria, Spain
| | - Juan Capel
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL), Universidad de Almería, 04120 Almeria, Spain
| | - Rafael Lozano
- Centro de Investigación en Biotecnología Agroalimentaria (BITAL), Universidad de Almería, 04120 Almeria, Spain
| | - Maria F. Duarte
- Centro de Biotecnologia Agrícola e Agro-Alimentar do Alentejo (CEBAL), Instituto Politécnico de Beja (IPBeja), Rua Pedro Soares, 7801-908 Beja, Portugal
| | - M. Margarida Oliveira
- Instituto de Tecnologia Química e Biológica António Xavier, Universidade Nova de Lisboa (ITQB NOVA), Av. da República, 2781-901 Oeiras, Portugal
| | - Sónia Gonçalves
- Centro de Biotecnologia Agrícola e Agro-Alimentar do Alentejo (CEBAL), Instituto Politécnico de Beja (IPBeja), Rua Pedro Soares, 7801-908 Beja, Portugal
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, CB101SA Cambridge, UK
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Fernandes MC, Ferro MD, Paulino AFC, Mendes JAS, Gravitis J, Evtuguin DV, Xavier AMRB. Enzymatic saccharification and bioethanol production from Cynara cardunculus pretreated by steam explosion. Bioresour Technol 2015; 186:309-315. [PMID: 25836040 DOI: 10.1016/j.biortech.2015.03.037] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Revised: 03/06/2015] [Accepted: 03/07/2015] [Indexed: 06/04/2023]
Abstract
The correct choice of the specific lignocellulosic biomass pretreatment allows obtaining high biomass conversions for biorefinery implementations and cellulosic bioethanol production from renewable resources. Cynara cardunculus (cardoon) pretreated by steam explosion (SE) was involved in second-generation bioethanol production using separate hydrolysis and fermentation (SHF) or simultaneous saccharification and fermentation (SSF) processes. Steam explosion pretreatment led to partial solubilisation of hemicelluloses and increased the accessibility of residual polysaccharides towards enzymatic hydrolysis revealing 64% of sugars yield against 11% from untreated plant material. Alkaline extraction after SE pretreatment of cardoon (CSEOH) promoted partial removal of degraded lignin, tannins, extractives and hemicelluloses thus allowing to double glucose concentration upon saccharification step. Bioethanol fermentation in SSF mode was faster than SHF process providing the best results: ethanol concentration 18.7 g L(-1), fermentation efficiency of 66.6% and a yield of 26.6g ethanol/100 g CSEOH or 10.1 g ethanol/100 g untreated cardoon.
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Affiliation(s)
- Maria C Fernandes
- Centro de Biotecnologia Agrícola e Agro-Alimentar do Alentejo (CEBAL)/Instituto Politécnico de Beja (IPBeja), 7801-908 Beja, Portugal.
| | - Miguel D Ferro
- Centro de Biotecnologia Agrícola e Agro-Alimentar do Alentejo (CEBAL)/Instituto Politécnico de Beja (IPBeja), 7801-908 Beja, Portugal
| | - Ana F C Paulino
- Centro de Biotecnologia Agrícola e Agro-Alimentar do Alentejo (CEBAL)/Instituto Politécnico de Beja (IPBeja), 7801-908 Beja, Portugal
| | - Joana A S Mendes
- CICECO - Aveiro Institute of Materials, Departamento de Química, Universidade de Aveiro, Campus Universitário de Santiago, P-3810-193 Aveiro, Portugal
| | - Janis Gravitis
- Laboratory of Eco-Effective Conversion, Latvian State Institute of Wood Chemistry, Riga, Latvia
| | - Dmitry V Evtuguin
- CICECO - Aveiro Institute of Materials, Departamento de Química, Universidade de Aveiro, Campus Universitário de Santiago, P-3810-193 Aveiro, Portugal
| | - Ana M R B Xavier
- CICECO - Aveiro Institute of Materials, Departamento de Química, Universidade de Aveiro, Campus Universitário de Santiago, P-3810-193 Aveiro, Portugal
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12
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Colla G, Rouphael Y, Cardarelli M, Svecova E, Rea E, Lucini L. Effects of saline stress on mineral composition, phenolic acids and flavonoids in leaves of artichoke and cardoon genotypes grown in floating system. J Sci Food Agric 2013; 93:1119-27. [PMID: 22936423 DOI: 10.1002/jsfa.5861] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Revised: 07/09/2012] [Accepted: 07/20/2012] [Indexed: 05/03/2023]
Abstract
BACKGROUND Cynara cardunculus is a species native to the Mediterranean basin. It includes globe artichoke and cultivated cardoon as well as their progenitor wild cardoon. The species is a source of biophenols, and its leaf extracts have been widely used in herbal medicine as hepatoprotectors and choleretics since ancient times. The aim of this study was to determine the effect of increasing the level of salinity in the nutrient solution (1 or 30 mmol L⁻¹ NaCl) on biomass production, mineral composition, radical-scavenging activity, caffeoylquinic acids and flavonoids in three artichoke ('Romolo', 'Violetto di Provenza' and 'Violetto di Romagna') and three cultivated cardoon ('Bianco Avorio', 'Bianco Gigante Inerme' and 'Gigante di Romagna') cultivars grown in a floating system. RESULTS Increased salinity in the nutrient solution decreased the leaf dry biomass and leaf number of artichoke and cultivated cardoon cultivars. Salinity reduced macro- and microelement accumulation in leaves (e.g. N, K, Ca, Mg, Fe, Mn and B) but improved their antioxidant activity, total polyphenols, chlorogenic acid, cynarin and luteolin. The cultivated cardoons, especially 'Bianco Avorio' and 'Gigante di Romagna', showed higher biomass and leaf number than those observed in artichoke genotypes. 'Violetto di Provenza' exhibited the highest content of chlorogenic acid, closely followed by 'Violetto di Romagna', whereas for cynarin content the highest values were recorded in 'Violetto di Provenza', 'Bianco Avorio' and 'Gigante di Romagna'. The highest content of luteolin was recorded in 'Gigante di Romagna' and 'Bianco Avorio', while the highest content of apigenin was observed in 'Gigante di Romagna'. CONCLUSION The results showed that the floating system could be considered an effective tool to improve quality aspects through proper management of the salt concentration in the nutrient solution. They also suggest that specific cultivars should be selected to obtain the desired profile of bioactive compounds.
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Affiliation(s)
- Giuseppe Colla
- Department of Agriculture, Forestry, Nature and Energy, University of Tuscia, Via San Camillo De Lellis snc, I-01100 Viterbo, Italy.
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13
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Campos Molina MJ, Mariscal R, Ojeda M, López Granados M. Cyclopentyl methyl ether: a green co-solvent for the selective dehydration of lignocellulosic pentoses to furfural. Bioresour Technol 2012; 126:321-327. [PMID: 23128237 DOI: 10.1016/j.biortech.2012.09.049] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Revised: 09/12/2012] [Accepted: 09/13/2012] [Indexed: 06/01/2023]
Abstract
The effects of cyclopentyl methyl ether (CPME) addition during the aqueous xylose dehydration reaction to furfural are reported here. These investigations were conducted by using pure xylose and Cynara cardunculus (cardoon) lignocellulose as sugar source and H(2)SO(4) as catalyst. The research was also applied to aqueous solutions containing NaCl, since it has been previously demonstrated that NaCl incorporation to these reaction mixtures remarkably increases the furfural formation rate. It has been found that CPME incorporation inhibits the formation of undesired products (resins, condensation products and humins). Thus, cardoon lignocellulosic pentoses were selectively transformed into furfural (near 100%) at the following reaction conditions: 1 wt.% H(2)SO(4), 4 wt.% biomass referred to aqueous solution, 30 min reaction, 443 K, CPME/aqueous phase mass ratio equals to 2.33, and NaCl/aqueous solution mass ratio of 0.4. In contrast, no effect was observed for cellulosic glucose transformation into hydroxymethylfurfural and levulinic acid at identical reaction conditions.
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Affiliation(s)
- M J Campos Molina
- Institute of Catalysis and Petrochemistry (CSIC), C/Marie Curie 2, Campus de Cantoblanco, 28049 Madrid, Spain
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14
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Papazoglou EG. Responses of Cynara cardunculus L. to single and combined cadmium and nickel treatment conditions. Ecotoxicol Environ Saf 2011; 74:195-202. [PMID: 20797786 DOI: 10.1016/j.ecoenv.2010.06.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2009] [Revised: 06/28/2010] [Accepted: 06/29/2010] [Indexed: 05/04/2023]
Abstract
A greenhouse pot experiment was carried out to study the responses of Cynara cardunculus L. (cardoon) to cadmium and nickel. Three groups of 12 pots each were planted with cardoon plants and spiked with single and combined cadmium and nickel aqueous solutions. The bioavailable metal concentrations, measured in soil, ranged widely and were up to 246.7 mg kg⁻¹ for Cd and 61.1 mg kg⁻¹ for Ni. Under Cd treatment, cardoon growth remained unaffected, while increased Ni soil concentrations inhibited plant growth and were lethal to the highly treated plants. In the combined Cd and Ni treatments, an antagonistic effect was observed between the two metals. Cadmium and nickel concentrations in cardoon tissues rose with increasing metal concentrations in the soil. Cadmium and nickel contents in shoots reached 169.3 and 342.3 mg kg⁻¹ in the single treatments while, under the combined Cd and Ni treatments, they were up to 235.0 and 440.7 mg kg⁻¹, respectively. Generally, mean contents of both metals in the shoots were higher than in the roots and the translocation factor was greater than 1. A possible enhancing effect of nickel on cadmium uptake was observed. Cardoon showed characteristics of a Cd accumulator.
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Affiliation(s)
- E G Papazoglou
- Department of Natural Resources Management and Agricultural Engineering, Agricultural University of Athens, 75 Iera Odos Street, Athens, Greece.
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Epelde L, Hernández-Allica J, Becerril JM, Blanco F, Garbisu C. Effects of chelates on plants and soil microbial community: comparison of EDTA and EDDS for lead phytoextraction. Sci Total Environ 2008; 401:21-28. [PMID: 18499230 DOI: 10.1016/j.scitotenv.2008.03.024] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2008] [Revised: 03/18/2008] [Accepted: 03/19/2008] [Indexed: 05/26/2023]
Abstract
Most studies on chelate-induced phytoextraction have focused on EDTA-mediated Pb phytoextraction. But EDTA and the formed EDTA-Pb complexes have low biodegradability and high solubility in soil, resulting in an elevated risk of adverse environmental effects. EDDS is an easily biodegradable chelating agent that has recently been proposed as an environmentally sound alternative to EDTA. Consequently, a greenhouse experiment, using a completely randomized factorial design with four replications, was carried out to compare the potential of EDTA and EDDS for chelate-induced Pb phytoextraction with Cynara cardunculus, as well as to investigate the toxicity of these two chelates to both cardoon plants and soil microorganisms. The effects of chelate addition on soil microbial communities were studied through the determination of a variety of biological indicators of soil quality such as soil enzyme activities, basal and substrate-induced respiration, potentially mineralizable nitrogen, and community level physiological profiles. EDTA was much more efficient than EDDS for the enhancement of root Pb uptake and root-to-shoot Pb translocation. In a soil polluted with 5000 mg Pb kg(-1), as a result of the addition of 1 g EDTA kg(-1) soil, a value of 1332 mg Pb kg(-1) DW shoot was obtained. EDDS application resulted in a shoot Pb accumulation of only 310 mg kg(-1)DW. Plants treated with EDDS showed lower values of biomass than those treated with EDTA. EDDS proved to be rapidly degraded, and less toxic to the soil microbial community in control non-polluted soils. Pb-polluted EDDS-treated soils showed significantly higher values of basal and substrate-induced respiration than those treated with EDTA. Although EDDS had a lower capacity to enhance Pb phytoextraction than EDTA, it has the advantage of rapid biodegradation.
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Affiliation(s)
- Lur Epelde
- NEIKER-Tecnalia, Basque Institute of Agrarian Research and Development, c/ Berreaga 1, E-48160 Derio, Spain
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Sales-Gomes M, Margarida Cavaco A, Lima-Costa ME. Allocation of proteolytic activity in the seedling of Cynara cardunculus L. in the initial growth stages. J Plant Physiol 2008; 165:1041-1048. [PMID: 17997191 DOI: 10.1016/j.jplph.2007.07.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2006] [Revised: 07/30/2007] [Accepted: 07/30/2007] [Indexed: 05/25/2023]
Abstract
Cynara cardunculus L. seeds were germinated in vitro under environmentally controlled conditions. Seeds showed a 60% germination rate, and three growth stages were established based on the seedling mean relative growth rate (RGR). Root, stem and cotyledons were compared in these stages with respect to the emergence of total proteases and cardosin activity and its allocation in the seedling. In growth stage I (1st-5th post-germinative days), seedlings grew very slowly. Total proteases and cardosins were already active at the onset of seedlings in the stem. Total soluble protein remained constant in cardoon seedlings during stage I, and the content of all free amino acids (aa) but proline (Pro) was equally allocated on the 1st post-germinative day. In growth stage II (5th-10th post-germinative days), seedlings grew intensively and exhibited fully developed cotyledons. A pronounced increase in the content of all free aa up to the middle of growth stage II in both stems and roots was observed. In addition, the allocation of the total proteolytic activity and cardosins followed a gradient from the root to the seedling shoot. However, the whole seedling soluble protein remained constant up to the 7th day in and tended to peak on the 10th post-germinative day, being allocated mainly to the seedling stem. In growth stage III (10th-15th post-germinative days), cardoon seedlings exhibited the lowest mean RGR and the highest R/S growth ratio. An intensive degradation of total soluble protein present in the whole seedling except for cotyledons (ca. 5-fold) was observed. Nevertheless, in growth stage III, both the gradients exhibited by total proteases and cardosins activities between the root and the seedling shoot were enhanced, as were contents of all aa except Pro, exhibiting the highest levels in cotyledons on the 15th post-germinative day.
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17
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Hernández-Allica J, Becerril JM, Garbisu C. Assessment of the phytoextraction potential of high biomass crop plants. Environ Pollut 2008; 152:32-40. [PMID: 17644228 DOI: 10.1016/j.envpol.2007.06.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2006] [Revised: 05/29/2007] [Accepted: 06/03/2007] [Indexed: 05/16/2023]
Abstract
A hydroponic screening method was used to identify high biomass crop plants with the ability to accumulate metals. Highest values of shoot accumulation were found in maize cv. Ranchero, rapeseed cv. Karat, and cardoon cv. Peralta for Pb (18 753 mg kg(-1)), Zn (10 916 mg kg(-1)), and Cd (242 mg kg(-1)), respectively. Subsequently, we tested the potential of these three cultivars for the phytoextraction of a metal spiked compost, finding out that, in cardoon and maize plants, increasing Zn and Cd concentrations led to lower values of root and shoot DW. By contrast, rapeseed shoot growth was not significantly affected by Cd concentration. Finally, a metal polluted soil was used to check these cultivars' phytoextraction capacity. Although the soil was phytotoxic enough to prevent the growth of cardoon and rapeseed plants, maize plants phytoextracted 3.7 mg Zn pot(-1). We concluded that the phytoextraction performance of cultivars varies depending on the screening method used.
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Affiliation(s)
- Javier Hernández-Allica
- NEIKER-tecnalia, Basque Institute of Agricultural Research and Development, c/Berreaga 1, E-48160 Derio, Spain
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Comino C, Lanteri S, Portis E, Acquadro A, Romani A, Hehn A, Larbat R, Bourgaud F. Isolation and functional characterization of a cDNA coding a hydroxycinnamoyltransferase involved in phenylpropanoid biosynthesis in Cynara cardunculus L. BMC Plant Biol 2007; 7:14. [PMID: 17374149 PMCID: PMC1847684 DOI: 10.1186/1471-2229-7-14] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2006] [Accepted: 03/20/2007] [Indexed: 05/14/2023]
Abstract
BACKGROUND Cynara cardunculus L. is an edible plant of pharmaceutical interest, in particular with respect to the polyphenolic content of its leaves. It includes three taxa: globe artichoke, cultivated cardoon, and wild cardoon. The dominating phenolics are the di-caffeoylquinic acids (such as cynarin), which are largely restricted to Cynara species, along with their precursor, chlorogenic acid (CGA). The scope of this study is to better understand CGA synthesis in this plant. RESULTS A gene sequence encoding a hydroxycinnamoyltransferase (HCT) involved in the synthesis of CGA, was identified. Isolation of the gene sequence was achieved by using a PCR strategy with degenerated primers targeted to conserved regions of orthologous HCT sequences available. We have isolated a 717 bp cDNA which shares 84% aminoacid identity and 92% similarity with a tobacco gene responsible for the biosynthesis of CGA from p-coumaroyl-CoA and quinic acid. In silico studies revealed the globe artichoke HCT sequence clustering with one of the main acyltransferase groups (i.e. anthranilate N-hydroxycinnamoyl/benzoyltransferase). Heterologous expression of the full length HCT (GenBank accession DQ104740) cDNA in E. coli demonstrated that the recombinant enzyme efficiently synthesizes both chlorogenic acid and p-coumaroyl quinate from quinic acid and caffeoyl-CoA or p-coumaroyl-CoA, respectively, confirming its identity as a hydroxycinnamoyl-CoA: quinate HCT. Variable levels of HCT expression were shown among wild and cultivated forms of C. cardunculus subspecies. The level of expression was correlated with CGA content. CONCLUSION The data support the predicted involvement of the Cynara cardunculus HCT in the biosynthesis of CGA before and/or after the hydroxylation step of hydroxycinnamoyl esters.
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Affiliation(s)
- Cinzia Comino
- Di.Va.P.R.A. Plant Genetics and Breeding, University of Torino 10095, Grugliasco (Turin), Italy
| | - Sergio Lanteri
- Di.Va.P.R.A. Plant Genetics and Breeding, University of Torino 10095, Grugliasco (Turin), Italy
| | - Ezio Portis
- Di.Va.P.R.A. Plant Genetics and Breeding, University of Torino 10095, Grugliasco (Turin), Italy
| | - Alberto Acquadro
- Di.Va.P.R.A. Plant Genetics and Breeding, University of Torino 10095, Grugliasco (Turin), Italy
| | - Annalisa Romani
- Department of Pharmaceutical Sciences, University of Florence, 50019, Sesto Fiorentino (Florence), Italy
| | - Alain Hehn
- UMR 1121 INPL-INRA Agronomie Environnement, 54505 Vandoeuvre-lès-Nancy, France
| | - Romain Larbat
- UMR 1121 INPL-INRA Agronomie Environnement, 54505 Vandoeuvre-lès-Nancy, France
| | - Frédéric Bourgaud
- UMR 1121 INPL-INRA Agronomie Environnement, 54505 Vandoeuvre-lès-Nancy, France
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