| Title: | Effect of herbivore load on VOC-mediated plant communication in potato |
| Author(s): | Vazquez-Gonzalez C; Quiroga V; Martin-Cacheda L; Rasmann S; Roder G; Abdala-Roberts L; Moreira X; |
| Address: | "Department of Ecology and Evolutionary Biology, University of California-Irvine, Irvine, CA, 92697, USA. cvazquez@mbg.csic.es. Mision Biologica de Galicia (MBG-CSIC), Apartado de Correos 28, 36080, Pontevedra, Galicia, Spain. cvazquez@mbg.csic.es. Mision Biologica de Galicia (MBG-CSIC), Apartado de Correos 28, 36080, Pontevedra, Galicia, Spain. Institute of Biology, University of Neuchatel, Rue Emile-Argand 11, 2000, Neuchatel, Switzerland. Departamento de Ecologia Tropical, Campus de Ciencias Biologicas y Agropecuarias, Universidad Autonoma de Yucatan, Apartado Postal 4-116, Itzimna, 97000, Merida, Yucatan, Mexico" |
| DOI: | 10.1007/s00425-023-04075-6 |
| ISSN/ISBN: | 1432-2048 (Electronic) 0032-0935 (Linking) |
| Abstract: | "VOC emissions increased with herbivore load, but this did not result in concomitant increases in resistance in neighbouring plants, suggesting that communication occurred independently of herbivore load in emitter plants. Herbivore-damaged plants emit volatile organic compounds (VOCs) that can alert neighbours and boost their resistance. While VOC-mediated plant communication has been shown to be herbivore-specific, we know little about its contingency on variation in herbivore load. To address this knowledge gap, we tested herbivore load effects on VOC-mediated communication between potato plants (Solanum tuberosum) using the generalist herbivore Spodoptera exigua. First, we tested whether herbivore load (three levels: undamaged control, low, and high load) affected total VOC emissions and composition. Second, we matched emitter and receiver plants and subjected emitters to the same herbivore load treatments. Finally, we performed a bioassay with S. exigua on receivers to test for induced resistance due to VOC-mediated communication. We found that herbivory significantly increased total VOC emissions relative to control plants, and that such increase was greater under high herbivore load. In contrast, we found no detectable effect of herbivory, regardless of the load, on VOC composition. The communication experiment showed that VOCs released by herbivore-induced emitters boosted resistance in receivers (i.e., lower leaf damage than receivers exposed to VOCs released by control emitters), but the magnitude of such effect was similar for both levels of emitter herbivore load. These findings suggest that changes in VOCs due to variation in herbivore load do not modify the outcomes of plant communication" |
| Keywords: | Herbivory Plant Leaves *Solanum tuberosum *Volatile Organic Compounds/pharmacology Animals Herbivore density Induced resistance Plant-plant signalling Solanum tuberosum Spodoptera exigua Volatile organic compounds; |
| Notes: | "MedlineVazquez-Gonzalez, Carla Quiroga, Violeta Martin-Cacheda, Lucia Rasmann, Sergio Roder, Gregory Abdala-Roberts, Luis Moreira, Xoaquin eng RTI2018-099322-B-I00/Ministerio de Ciencia e Innovacion/ PRE2019-091096/Ministerio de Ciencia e Innovacion/ 2021AEP082/Consejo Superior de Investigaciones Cientificas/ IN607A 2021/03/Axencia Galega de Innovacion/ IN606B 2021/004/Axencia Galega de Innovacion/ Germany 2023/01/23 Planta. 2023 Jan 23; 257(2):42. doi: 10.1007/s00425-023-04075-6" |
