| Title: | Patterns and drivers of heat production in the plant genus Amorphophallus |
| Author(s): | Claudel C; Loiseau O; Silvestro D; Lev-Yadun S; Antonelli A; |
| Address: | "Institute for Plant Science and Microbiology, Department of Biology, University of Hamburg, Ohnhorststrasse 18, 22609, Hamburg, Germany. School of GeoSciences, King's Buildings, University of Edinburgh, Edinburgh, EH9 3FF, UK. Gothenburg Global Biodiversity Centre, Department of Biological and Environmental Sciences, University of Gothenburg, Box 461, SE 405 30, Gothenburg, Sweden. Department of Biology, University of Fribourg, 1700, Fribourg, Switzerland. Swiss Institute of Bioinformatics (SIB), 1015, Lausanne, Switzerland. Department of Biology and Environment, Faculty of Natural Sciences, University of Haifa-Oranim, Tivon, 36006, Israel. Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, UK. Department of Biology, University of Oxford, South Parks Road, Oxford, OX1 3RB, UK" |
| ISSN/ISBN: | 1365-313X (Electronic) 0960-7412 (Linking) |
| Abstract: | "Thermogenesis - the ability to generate metabolic heat - is much more common in animals than in plants, but it has been documented in several plant families, most prominently the Araceae. Metabolic heat is produced in floral organs during the flowering time (anthesis), with the hypothesised primary functions being to increase scent volatilisation for pollinator attraction, and/or to provide a heat reward for invertebrate pollinators. Despite in-depth studies on the thermogenesis of single species, no attempts have yet been made to examine plant thermogenesis across an entire clade. Here, we apply time-series clustering algorithms to 119 measurements of the full thermogenic patterns in inflorescences of 80 Amorphophallus species. We infer a new time-calibrated phylogeny of this genus and use phylogenetic comparative methods to investigate the evolutionary determinants of thermogenesis. We find striking phenotypic variation across the phylogeny, with heat production in multiple clades reaching up to 15 degrees C, and in one case 21.7 degrees C above ambient temperature. Our results show that the thermogenic capacity is phylogenetically conserved and is also associated with inflorescence thickness. Our study paves the way for further investigations of the eco-evolutionary benefits of thermogenesis in plants" |
| Keywords: | Animals *Amorphophallus Flowers/genetics Phylogeny Inflorescence Thermogenesis Pollination Amorphophallus pollinator attraction reward volatilisation; |
| Notes: | "MedlineClaudel, Cyrille Loiseau, Oriane Silvestro, Daniele Lev-Yadun, Simcha Antonelli, Alexandre eng Research Support, Non-U.S. Gov't England 2023/06/21 Plant J. 2023 Aug; 115(4):874-894. doi: 10.1111/tpj.16343. Epub 2023 Jun 20" |
