1
|
Falkowski M, Jahn-Oyac A, Odonne G, Flora C, Estevez Y, Touré S, Boulogne I, Robinson JC, Béreau D, Petit P, Azam D, Coke M, Issaly J, Gaborit P, Stien D, Eparvier V, Dusfour I, Houël E. Towards the optimization of botanical insecticides research: Aedes aegypti larvicidal natural products in French Guiana. Acta Trop 2020; 201:105179. [PMID: 31539525 DOI: 10.1016/j.actatropica.2019.105179] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 08/23/2019] [Accepted: 09/16/2019] [Indexed: 11/18/2022]
Abstract
Natural products have proven to be an immeasurable source of bioactive compounds. The exceptional biodiversity encountered in Amazonia, alongside a rich entomofauna and frequent interactions with various herbivores is the crucible of a promising chemodiversity. This prompted us to search for novel botanical insecticides in French Guiana. As this French overseas department faces severe issues linked to insects, notably the strong incidence of vector-borne infectious diseases, we decided to focus our research on products able to control the mosquito Aedes aegypti. We tested 452 extracts obtained from 85 species originating from 36 botanical families and collected in contrasted environments against an Ae. aegypti laboratory strain susceptible to all insecticides, and a natural population resistant to both pyrethroid and organophosphate insecticides collected in Cayenne for the most active of them. Eight species (Maytenus oblongata Reissek, Celastraceae; Costus erythrothyrsus Loes., Costaceae; Humiria balsamifera Aubl., Humiriaceae; Sextonia rubra (Mez) van der Werff, Lauraceae; Piper hispidum Sw., Piperaceae; Laetia procera (Poepp.) Eichl., Salicaceae; Matayba arborescens (Aubl.) Radlk., Sapindaceae; and Cupania scrobitulata Rich., Sapindaceae) led to extracts exhibiting more than 50% larval mortality after 48 h of exposition at 100 µg/mL against the natural population and were considered active. Selectivity and phytochemistry of these extracts were therefore investigated and discussed, and some active compounds highlighted. Multivariate analysis highlighted that solvents, plant tissues, plant family and location had a significant effect on mortality while light, available resources and vegetation type did not. Through this case study we highlighted that plant defensive chemistry mechanisms are crucial while searching for novel insecticidal products.
Collapse
Affiliation(s)
- Michaël Falkowski
- CNRS, UMR EcoFoG, AgroParisTech, Cirad, INRA, Université des Antilles, Université de Guyane, 97300 Cayenne, France
| | - Arnaud Jahn-Oyac
- CNRS, UMR EcoFoG, AgroParisTech, Cirad, INRA, Université des Antilles, Université de Guyane, 97300 Cayenne, France
| | - Guillaume Odonne
- Laboratoire Ecologie, Evolution, Interactions des Systèmes Amazoniens (LEEISA), CNRS, Université de Guyane, IFREMER, 97300 Cayenne, France
| | - Claudiane Flora
- CNRS, UMR EcoFoG, AgroParisTech, Cirad, INRA, Université des Antilles, Université de Guyane, 97300 Cayenne, France
| | - Yannick Estevez
- CNRS, UMR EcoFoG, AgroParisTech, Cirad, INRA, Université des Antilles, Université de Guyane, 97300 Cayenne, France
| | - Seindé Touré
- CNRS, UMR EcoFoG, AgroParisTech, Cirad, INRA, Université des Antilles, Université de Guyane, 97300 Cayenne, France; CNRS, Institut de Chimie des Substances Naturelles, UPR2301, Université Paris Saclay, 91198 Gif-sur-Yvette, France
| | - Isabelle Boulogne
- CNRS, UMR EcoFoG, AgroParisTech, Cirad, INRA, Université des Antilles, Université de Guyane, 97300 Cayenne, France; Université des Antilles, Campus de Fouillole, 97157 Pointe-à-Pitre Cedex, Guadeloupe, France; Université de ROUEN, UFR des Sciences et Techniques, Laboratoire Glycobiologie et Matrice Extracellulaire Végétale, UPRES-EA 4358, Fédération de Recherche « Normandie Végétal » FED 4277, 76821, Mont-Saint-Aignan, France
| | - Jean-Charles Robinson
- Université de Guyane, Laboratoire COVAPAM, UMR QualiSud, Campus universitaire de Troubiran, BP 792, 97337 Cayenne cedex, France
| | - Didier Béreau
- Université de Guyane, Laboratoire COVAPAM, UMR QualiSud, Campus universitaire de Troubiran, BP 792, 97337 Cayenne cedex, France
| | - Philippe Petit
- Université des Antilles, Campus de Fouillole, 97157 Pointe-à-Pitre Cedex, Guadeloupe, France
| | - Didier Azam
- Unité Expérimentale d'Ecologie et d'Ecotoxicologie Aquatique, INRA-U3E, 35042 Rennes, France
| | - Maïra Coke
- Unité Expérimentale d'Ecologie et d'Ecotoxicologie Aquatique, INRA-U3E, 35042 Rennes, France
| | - Jean Issaly
- Institut Pasteur de la Guyane, Vectopôle Amazonien Emile Abonnenc, Unité Contrôle et Adaptation des vecteurs, 23 avenue Pasteur, BP6010, 97306 Cayenne cedex, France
| | - Pascal Gaborit
- Institut Pasteur de la Guyane, Vectopôle Amazonien Emile Abonnenc, Unité Contrôle et Adaptation des vecteurs, 23 avenue Pasteur, BP6010, 97306 Cayenne cedex, France
| | - Didier Stien
- Sorbonne Université, CNRS, Laboratoire de Biodiversité et Biotechnologie Microbienne, LBBM, Observatoire Océanologique, 66650 Banyuls-sur-mer, France
| | - Véronique Eparvier
- CNRS, Institut de Chimie des Substances Naturelles, UPR2301, Université Paris Saclay, 91198 Gif-sur-Yvette, France
| | - Isabelle Dusfour
- Institut Pasteur de la Guyane, Vectopôle Amazonien Emile Abonnenc, Unité Contrôle et Adaptation des vecteurs, 23 avenue Pasteur, BP6010, 97306 Cayenne cedex, France; INRS-Institut Armand Frappier, Groupe recherche en écologie microbienne, 531 boulevard des prairies, Laval H7V 1B7, QC, Canada.
| | - Emeline Houël
- CNRS, UMR EcoFoG, AgroParisTech, Cirad, INRA, Université des Antilles, Université de Guyane, 97300 Cayenne, France.
| |
Collapse
|
2
|
Mariani ME, Fidelio GD. Secretory Phospholipases A 2 in Plants. FRONTIERS IN PLANT SCIENCE 2019; 10:861. [PMID: 31354755 PMCID: PMC6635587 DOI: 10.3389/fpls.2019.00861] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 06/14/2019] [Indexed: 05/17/2023]
Abstract
Secreted phospholipases (sPLA2s) in plants are a growing group of enzymes that catalyze the hydrolysis of sn-2 glycerophospholipids to lysophospholipids and free fatty acids. Until today, around only 20 sPLA2s were reported from plants. This review discusses the newly acquired information on plant sPLA2s including molecular, biochemical, catalytic, and functional aspects. The comparative analysis also includes phylogenetic, evolutionary, and tridimensional structure. The observations with emphasis in Glycine max sPLA2 are compared with the available data reported for all plants sPLA2s and with those described for animals (mainly from pancreatic juice and venoms sources).
Collapse
Affiliation(s)
- María Elisa Mariani
- Departamento de Química Biológica, Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, Córdoba, Argentina
- Instituto de Investigaciones Biológicas y Tecnológicas, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- Departamento de Fundamentación Biológica, Facultad de Ciencias Agropecuarias, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Gerardo Daniel Fidelio
- Departamento de Química Biológica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- Centro de Investigaciones en Química Biológica de Córdoba, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| |
Collapse
|
3
|
Mazzucotelli E, Trono D. Cloning, expression analysis, and functional characterization of two secretory phospholipases A2 in durum wheat (Triticum durum Desf.). PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2015; 241:295-306. [PMID: 26706080 DOI: 10.1016/j.plantsci.2015.10.009] [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: 09/07/2015] [Revised: 10/16/2015] [Accepted: 10/17/2015] [Indexed: 06/05/2023]
Abstract
We previously isolated four cDNAs in durum wheat, TdsPLA2I, TdsPLA2II, TdsPLA2III and TdsPLA2IV, that encode proteins with homology to plant secretory phospholipases A2 (sPLA2s) (Verlotta et al., Int. J. Mol. Sci., 14, 2013, 5146-5169). In this study, we have further characterized TdsPLA2II and TdsPLA2III sequences that, on the basis of our previous findings, might encode sPLA2 isoforms with different features. Functional analysis revealed that, similarly to other known sPLA2s, TdsPLA2II and TdsPLA2III have an optimum at pH 9.0, require Ca(2+), are heat stable, and are inhibited by the disulfide-bond-reducing agent dithiothreitol. However, differences emerged between these TdsPLA2 isoforms. Transcript analysis revealed that the TdsPLA2III gene is highly up-regulated under different environmental stresses; conversely, the TdsPLA2II gene is expressed at constant levels under almost all of the stress conditions examined. Moreover, TdsPLA2II is saturated at micromolar substrate and Ca(2+) concentrations, whereas TdsPLA2III requires millimolar concentrations to reach maximal activity. This suggests that TdsPLA2II normally functions under optimal conditions in vivo, whereas TdsPLA2III is only partially activated, depending on the specific phospholipid and Ca(2+) levels. Altogether these data lead to the hypothesis that in vivo TdsPLA2II and TdsPLA2III are differently regulated at both molecular and biochemical level and that TdsPLA2III plays a major role in durum wheat response to adverse environmental conditions.
Collapse
MESH Headings
- Amino Acid Sequence
- Cloning, Molecular
- DNA, Complementary/genetics
- DNA, Complementary/metabolism
- DNA, Plant/genetics
- DNA, Plant/metabolism
- Gene Expression Regulation, Plant
- Molecular Sequence Data
- Phospholipases A2, Secretory/genetics
- Phospholipases A2, Secretory/metabolism
- Phylogeny
- Plant Proteins/genetics
- Plant Proteins/metabolism
- RNA, Plant/genetics
- RNA, Plant/metabolism
- Sequence Alignment
- Triticum/enzymology
- Triticum/genetics
- Triticum/metabolism
Collapse
Affiliation(s)
- Elisabetta Mazzucotelli
- Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria, Centro di Ricerca per la Genomica Vegetale, Via San Protaso 302, 29017 Fiorenzuola d'Arda, Italy
| | - Daniela Trono
- Consiglio per la Ricerca in Agricoltura e l'Analisi dell'Economia Agraria, Centro di Ricerca per la Cerealicoltura, S.S. 673, Km 25,200, 71122 Foggia, Italy.
| |
Collapse
|
5
|
Secretory Phospholipases A2 in Durum Wheat (Triticum durum Desf.): Gene Expression, Enzymatic Activity, and Relation to Drought Stress Adaptation. Int J Mol Sci 2013; 14:5146-69. [PMID: 23455473 PMCID: PMC3634499 DOI: 10.3390/ijms14035146] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Revised: 02/13/2013] [Accepted: 02/18/2013] [Indexed: 01/12/2023] Open
Abstract
Phospholipases A2 (PLA2s) are known to mediate signaling cascades during plant growth and development, as well as biotic and abiotic stress responses. In this context, the present study provides extensive characterization of specific PLA2s in durum wheat, and assesses their involvement in durum wheat response to drought stress. In durum wheat leaves, four full-length expressed sequences encoding putative PLA2s were isolated and characterized as belonging to the class of secretory PLA2s (sPLA2s): TdsPLA2I, TdsPLA2II, TdsPLA2III and TdsPLA2IV. PLA2 activity was also detected, the characteristics of which resemble those of previously characterized plant sPLA2s: strong preference for phospholipids; requirement for millimolar Ca2+ concentrations; optimal activity at basic pH; heat stability; and inhibition by the reducing agent dithiothreitol. With drought stress imposed at both the vegetative and reproductive stages, accumulation of TdsPLA2I and TdsPLA2III transcripts, and to a lesser extent of TdsPLA2IV transcript, paralleled increased PLA2 activity; both transcript levels and enzymatic activity decreased as a consequence of stress recovery. Consistently, free fatty acid analysis of drought-stressed leaves revealed increased linoleate, linolenate and palmitate contents, which were reversed by plant re-watering. Overall, these findings strongly suggest that there are inducible sPLA2 isoforms in durum wheat that have roles in orchestrating the plant response to drought stress.
Collapse
|
7
|
Matos AR, Pham-Thi AT. Lipid deacylating enzymes in plants: old activities, new genes. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2009; 47:491-503. [PMID: 19324564 DOI: 10.1016/j.plaphy.2009.02.011] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2008] [Revised: 02/18/2009] [Accepted: 02/20/2009] [Indexed: 05/01/2023]
Abstract
Because lipids are major components of cellular membranes, their degradation under stress conditions compromises compartmentalization. However, in addition to having structural roles, membrane lipids are also implicated in signalling processes involving the activity of lipolytic enzymes. Phospholipases D and C, acting on the polar heads of phospholipids, have been relatively well characterized in plants. In contrast, knowledge of lipid deacylating enzymes remains limited. Lipid acyl hydrolases (LAH) are able to hydrolyse both fatty acid moieties of polar lipids. They differ from phospholipases A(1) or A(2) (PLA) acting on sn-1 or sn-2 positions of phospholipids, respectively, as well as from lipases which de-esterify triacylglycerols. The free polyunsaturated fatty acids generated by deacylating enzymes can be used in the biosynthesis of oxylipins and the lysophospholipids, provided by PLAs, are also bioactive molecules. In the four decades that have passed since the first description of LAH activities in plants some enzymes have been purified. In recent years, the widespread use of molecular approaches together with the attention paid to lipid signalling has contributed to a renewed interest in LAH and has led to the identification of different gene families and the characterization of new enzymes. Additionally, several proteins with putative lipase/esterase signatures have been identified. In the present paper we review currently available data on LAHs, PLAs, triacylglycerol lipases and other putative deacylating enzymes. The roles of lipid deacylating enzymes in plant growth, development and stress responses are discussed in the context of their involvement in membrane deterioration, lipid turnover and cellular signalling.
Collapse
Affiliation(s)
- Ana Rita Matos
- Centro de Engenharia Biológica, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, Lisboa, Portugal.
| | | |
Collapse
|