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« Previous AbstractIdentification of cell populations necessary for leaf-to-leaf electrical signaling in a wounded plant    Next AbstractHow plants handle multiple stresses: hormonal interactions underlying responses to abiotic stress and insect herbivory »

Plant Cell Environ


Title:Drought and flooding have distinct effects on herbivore-induced responses and resistance in Solanum dulcamara
Author(s):Nguyen D; D'Agostino N; Tytgat TO; Sun P; Lortzing T; Visser EJ; Cristescu SM; Steppuhn A; Mariani C; van Dam NM; Rieu I;
Address:"Department of Molecular Plant Physiology, Institute for Water and Wetland Research, Radboud University, 6500, GL, Nijmegen, The Netherlands. Consiglio per la ricerca in agricoltura e l'analisi dell'economia agraria, Centro di ricerca per l'orticoltura, 84098, Pontecagnano, (SA), Italy. Laboratoire de Biotechnologies Vegetales Appliquees aux Plantes Aromatiques et Medicinales, Universite Jean Monnet, 42023, Saint-Etienne, France. Molecular Ecology Group, Dahlem Centre of Plant Sciences, Freie Universitat Berlin, 12163, Berlin, Germany. Department of Experimental Plant Ecology, Institute for Water and Wetland Research, Radboud University, 6500, GL, Nijmegen, The Netherlands. Department of Molecular and Laser Physics, Institute for Molecules and Materials, Radboud University, 6500, GL, Nijmegen, The Netherlands. German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, 04103, Leipzig, Germany. Institute of Ecology, Friedrich Schiller University Jena, 07743, Jena, Germany"
Journal Title:Plant Cell Environ
Year:2016
Volume:20160406
Issue:7
Page Number:1485 - 1499
DOI: 10.1111/pce.12708
ISSN/ISBN:1365-3040 (Electronic) 0140-7791 (Linking)
Abstract:"In the field, biotic and abiotic stresses frequently co-occur. As a consequence, common molecular signalling pathways governing adaptive responses to individual stresses can interact, resulting in compromised phenotypes. How plant signalling pathways interact under combined stresses is poorly understood. To assess this, we studied the consequence of drought and soil flooding on resistance of Solanum dulcamara to Spodoptera exigua and their effects on hormonal and transcriptomic profiles. The results showed that S. exigua larvae performed less well on drought-stressed plants than on well-watered and flooded plants. Both drought and insect feeding increased abscisic acid and jasmonic acid (JA) levels, whereas flooding did not induce JA accumulation. RNA sequencing analyses corroborated this pattern: drought and herbivory induced many biological processes that were repressed by flooding. When applied in combination, drought and herbivory had an additive effect on specific processes involved in secondary metabolism and defence responses, including protease inhibitor activity. In conclusion, drought and flooding have distinct effects on herbivore-induced responses and resistance. Especially, the interaction between abscisic acid and JA signalling may be important to optimize plant responses to combined drought and insect herbivory, making drought-stressed plants more resistant to insects than well-watered and flooded plants"
Keywords:"Abscisic Acid/metabolism Animals Cyclopentanes/metabolism *Droughts Ethylenes/metabolism *Floods *Herbivory Insecta Oxylipins/metabolism Plant Growth Regulators/metabolism Solanum/*metabolism *Stress, Physiological Solanum dulcamara Spodoptera exigua absc;"
Notes:"MedlineNguyen, Duy D'Agostino, Nunzio Tytgat, Tom O G Sun, Pulu Lortzing, Tobias Visser, Eric J W Cristescu, Simona M Steppuhn, Anke Mariani, Celestina van Dam, Nicole M Rieu, Ivo eng Research Support, Non-U.S. Gov't 2016/01/14 Plant Cell Environ. 2016 Jul; 39(7):1485-99. doi: 10.1111/pce.12708. Epub 2016 Apr 6"

 
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