Correlation in plant volatile metabolites: physiochemical properties as a proxy for enzymatic pathways and an alternativ
- PDF / 1,303,864 Bytes
- 12 Pages / 595.276 x 790.866 pts Page_size
- 16 Downloads / 181 Views
CHEMOECOLOGY
SHORT COMMUNICATION
Correlation in plant volatile metabolites: physiochemical properties as a proxy for enzymatic pathways and an alternative metric of biosynthetic constraint Jordan A. Dowell1 · Chase M. Mason1 Received: 26 February 2020 / Accepted: 7 August 2020 © Springer Nature Switzerland AG 2020
Abstract From intra-individual regulation of metabolism to entire ecosystem functioning, the thousands of biogenic compounds produced by organisms serve as a major component of ecological and evolutionary diversity mediating interactions across scales. Earlier work considers canonical reactions, defined as reactions specified along accepted (experimentally validated or theoretically postulated) biosynthetic pathways, as the primary form of constraint on chemical diversity. An emerging understanding of non-canonical reactions (reactions which occur independently of canonical reactions) suggests that the physical chemistry of compounds may play a larger role in constraining chemo-diversity than previously thought. We selected 24 studies of plant volatile profiles, satisfying a defined set of criteria, to assess the extent of correlation among profiles attributable to either shared biosynthetic enzymes or physiochemical properties. Across studies, regardless of treatment, 0.17 (± 0.16 SD) adjusted R2 was attributed to both shared biosynthetic enzymes and physiochemical properties; however, there were no significant differences between the amount of unique variance attributed to shared enzymes (0.05 ± 0.08 SD) or physiochemical properties (0.03 ± 0.06 SD). The amount of unique variance explained by physiochemical properties, independent of their canonical relationships, provides a metric for evaluating the role of non-enzymatic and non-canonical reactions in constraining molecular diversity. Keywords Biosynthetic constraint · Enzyme promiscuity · Physiochemical · Specialized metabolism · Plant volatiles
Introduction Chemistry is the primal language of life, given that across the diversity of taxonomic groups individuals have evolved unique ways to produce and interpret complex molecules from their surroundings. As chemistry provides a fundamental way for organisms to interact with one another, it is no surprise that compound diversity has been linked to the structuring of communities at multiple levels (Micallef et al. Communicated by Günther Raspotnig. Electronic supplementary material The online version of this article (https://doi.org/10.1007/s00049-020-00322-4) contains supplementary material, which is available to authorized users. * Jordan A. Dowell [email protected] 1
Department of Biology, University of Central Florida, Orlando, FL 32816, USA
2009; Moles et al. 2011; Rubin et al. 2015; Uesugi et al. 2016). For example, in plants at the community level, volatile chemical diversity can influence herbivory rates more strongly than taxonomic diversity, such that high chemodiversity reduces herbivory rates (Salazar et al. 2016; Karban 2017; Dahlin et al. 2018). Plant volatile compounds
Data Loading...
