| Title: | Chemical Responses of Nicotiana tabacum (Solanaceae) Induced by Vibrational Signals of a Generalist Herbivore |
| Author(s): | Pinto CF; Torrico-Bazoberry D; Penna M; Cossio-Rodriguez R; Cocroft R; Appel H; Niemeyer HM; |
| Address: | "Facultad de Ciencias, Universidad de Chile, Santiago, Chile. Programa de Fisiologia y Biofisica, Facultad de Medicina, Universidad de Chile, Santiago, Chile. Division of Biological Sciences, University of Missouri, Columbia, MO, 65211, USA. Department of Environmental Sciences, University of Toledo, Toledo, OH, 43606, USA. Facultad de Ciencias, Universidad de Chile, Santiago, Chile. niemeyer@abulafia.ciencias.uchile.cl" |
| DOI: | 10.1007/s10886-019-01089-x |
| ISSN/ISBN: | 1573-1561 (Electronic) 0098-0331 (Linking) |
| Abstract: | "Plants are able to sense their environment and respond appropriately to different stimuli. Vibrational signals (VS) are one of the most widespread yet understudied ways of communication between organisms. Recent research into the perception of VS by plants showed that they are ecologically meaningful signals involved in different interactions of plants with biotic and abiotic agents. We studied changes in the concentration of alkaloids in tobacco plants induced by VS produced by Phthorimaea operculella (Lepidoptera: Gelechiidae), a generalist caterpillar that naturally feeds on the plant. We measured the concentration of nicotine, nornicotine, anabasine and anatabine in four treatments applied to 11-weeks old tobacco plant: a) Co = undamaged plants, b) Eq = Playback equipment attached to the plant without VS, c) Ca = Plants attacked by P. operculella herbivory and d) Pl = playback of VS of P. operculella feeding on tobacco. We found that nicotine, the most abundant alkaloid, increased more than 2.6 times in the Ca and Pl treatments as compared with the Co and Eq treatments, which were similar between them. Nornicotine, anabasine and anatabine were mutually correlated and showed similar concentration patterns, being higher in the Eq treatment. Results are discussed in terms of the adaptive significance of plant responses to ecologically important VS stimuli" |
| Keywords: | Alkaloids/*analysis/metabolism Anabasine/analysis Animals Gas Chromatography-Mass Spectrometry Herbivory Host-Parasite Interactions Larva/physiology Lepidoptera/*physiology Linear Models Nicotine/analogs & derivatives/analysis Principal Component Analysis; |
| Notes: | "MedlinePinto, Carlos F Torrico-Bazoberry, D Penna, M Cossio-Rodriguez, R Cocroft, R Appel, H Niemeyer, H M eng 3160356/Comision Nacional de Ciencia y Tecnologia (Chile)/ Latin American Network for Research on Bioactive Natural Compounds LANBIO/International Science Programs ISP - Sweden/ BOL-01/International Science Programs ISP - Sweden/ IOS-1359593/National Science Foundation/ 2019/07/18 J Chem Ecol. 2019 Aug; 45(8):708-714. doi: 10.1007/s10886-019-01089-x. Epub 2019 Jul 17" |
