Disentangling dimensions of phytochemical diversity: alpha and beta have contrasting effects on an insect herbivore DOI
Andrea E. Glassmire, Luke N. Zehr, William C. Wetzel

et al.

Ecology, Journal Year: 2020, Volume and Issue: 101(11)

Published: Aug. 3, 2020

Abstract Phytochemical diversity is comprised of two main dimensions—the average (alpha) within‐plant neighbors or the difference (beta) in composition chemicals between plant neighbors. Research, however, has primarily examined consequences phytochemical on herbivore performance through a single dimension, even though multidimensional. Furthermore, ecological role not well understood because each these dimensions exhibits unique biological effects performance. Therefore, it been difficult to tease apart relative importance alpha and beta chemical diversities plant–herbivore interactions. We experimentally manipulated along gradient disentangle mobile generalist herbivore, Trichoplusia ni (Hübner), using 16 genotypes from Solanum pennellii introgression lines. First, we found contrasting Second, when comparing across within classes, was reduced had greater classes that are biologically inhibiting at higher quantities (i.e., quantitative defenses such as phenolics acyl sugars). However, enhanced levels toxic qualitative alkaloids). Finally, herbivores performed better dicultures compared monocultures, positively associated with only there were high Our results suggest T. caterpillars do chemically different differences provide options for them choose switch plants balance uptake. Overall, interact large multiple scales, our indicate all equal: specific have dynamics

Language: Английский

Assessing Specialized Metabolite Diversity in the Cosmopolitan Plant Genus Euphorbia L. DOI Creative Commons
Madeleine Ernst, Louis‐Félix Nothias, Justin J. J. van der Hooft

et al.

Frontiers in Plant Science, Journal Year: 2019, Volume and Issue: 10

Published: July 2, 2019

Coevolutionary theory suggests that an arms race between plants and herbivores yields increased plant specialized metabolite diversity the geographic mosaic of coevolution predicts coevolutionary interactions vary across scales. Consequently, is expected to be highest in hotspots, regions, which exhibit strong reciprocal selection on interacting species. Despite being well established theoretical frameworks, technical limitations have precluded rigorous hypothesis testing. Here we aim at understanding how separation over evolutionary time may impacted chemical differentiation cosmopolitan genus Euphorbia. We use a combination state-of-the-art computational mass spectral metabolomics tools together with cell-based high-throughput immunomodulatory Our results show significant differences geographically separated phylogenetic clades. Chemical structural highly toxic Euphorbia diterpenoids significantly reduced species native Americas, compared Afro-Eurasia. The localization these compounds young stems roots, suggest possible ecological relevance herbivory defense. This further supported by activity American subclade as herbivore distribution patterns. conclude spectrometric coupled relevant data provide tool for exploring chemo-evolutionary framework.

Language: Английский

Citations

48
Information theory tests critical predictions of plant defense theory for specialized metabolism DOI Creative Commons
Dapeng Li, Rayko Halitschke, Ian T. Baldwin

et al.

Science Advances, Journal Year: 2020, Volume and Issue: 6(24)

Published: June 10, 2020

Information theory provides a common currency for comparison of specialized metabolomes and tests defense predictions.

Language: Английский

Citations

43
Attraction of Sitophilus oryzae (L.) (Coleoptera: Curculionidae) to the semiochemical volatiles of stored rice materials DOI Creative Commons
Yu Cao,

Qiqi Hu,

Lujie Huang

et al.

Journal of Pest Science, Journal Year: 2023, Volume and Issue: 97(1), P. 73 - 85

Published: April 15, 2023

Abstract In order to explore the influence of stored cereal volatiles on behavior Sitophilus oryzae, olfactory responses adult rice weevils different cultivars [Red brown (RBR), Daohuaxiangmi (DHXM), Baishuigongmi (BSGM), Yashuixinmi (YSXM), and white glutinous (WGR)] were studied using electroantennography (EAG) behavioural bioassays in types olfactometers. S. oryzae showed significantly preferences for these cultivars, RBR > DHXM = YSXM ≥ BSGM WGR. Furthermore, 26 components identified volatile profile RBR. Nonanal (29.37%), hexanal (16.08%), 1-octen-3-ol (8.83%) most abundant compounds. EAG recordings that antennae able perceive three compounds a dose-dependent manner. The elicited significant at various concentrations, with strongest 100 μg μL −1 . had positive response nonanal, hexanal, attractive being 50, 100, µg µL , respectively. based comparison their optimal nonanal hexanal. These results indicated preferred cultivar (RBR) perceived by peripheral system adults individually chemotaxis. findings offer new insights into mechanism host stored-grain pests. greatest potential use as novel monitoring control tool against this storage-beetle pest.

Language: Английский

Citations

15
New Analytical Approach to Quinolizidine Alkaloids and Their Assumed Biosynthesis Pathways in Lupin Seeds DOI Creative Commons

Dvory Namdar,

Patrick P. J. Mulder,

Eyal Ben-Simchon

et al.

Toxins, Journal Year: 2024, Volume and Issue: 16(3), P. 163 - 163

Published: March 21, 2024

Alkaloids play an essential role in protecting plants against herbivores. Humans can also benefit from the pharmacological effects of these compounds. Plants produce immense variety structurally different alkaloids, including quinolizidine a group bi-, tri-, and tetracyclic compounds produced by Lupinus species. Various lupin species alkaloid profiles. To study composition alkaloids seeds, we collected 31 populations two wild native to Israel, L. pilosus palaestinus, analyzed their contents. Our goal was profiles better understand challenges prospective uses lupins. We compared with those other commercial this end, straightforward method for extracting seeds determining profile LC–MS/MS developed validated in-house. For quantification 15 analytical reference standards were used. used GC–MS verify cross-reference identity certain which no available. The results enabled further exploration biosynthesis. reviewed re-analyzed suggested biosynthesis pathway, relationship between amino acid precursor l-lysine occurring Revealing compositions highlighting some aspects formation pathway are important steps evaluating use lupins as novel legume crop.

Language: Английский

Citations

5
Circadian migrations of cave-dwelling crustaceans guided by their home chemical seascape DOI Creative Commons
Marie Derrien, Mathieu Santonja, Stéphane Greff

et al.

Frontiers in Marine Science, Journal Year: 2024, Volume and Issue: 11

Published: Sept. 17, 2024

Organisms release and detect molecules for defense, reproduction, feeding strategies finding suitable habitats. For some migratory species, homing behavior could be related to the recognition of their home chemical fingerprint made an assemblage from habitat. In marine realm, functioning ecosystems such as underwater caves largely depends on trophic interactions between outside environment. A key feature these relies circadian migration small crustaceans (Mysida) cave habitat open sea. Recently, it has been hypothesized that migrations involve mediation. Behavioral experiments using a two-choice system have shown mysids significantly seawater rather than control water Here, we used same experimental investigate by two populations mysid Hemimysis margalefi . Both were submitted choice three distinct seawaters vs. seawater. Additionally, tested preference non-cave species ( Leptomysis sp.) seawaters. To evaluate whether was influenced cues conspecifics, complementary experiment H. conducted. Results demonstrated each studied population recognizes its own habitat, this is not occurrence ’s exudates. Mass spectrometry-based metabolomic analyses revealed had specific with only few reproducibly detected signals belonging different classes: peptides, alkaloids, fatty acids, steroids but also inorganic molecules. Organic pollutants detected. Among compounds, one oxylipin derivative peptide considered markers ecosystem. Therefore, postulate seascape participates which are analogous daily-based behavior.

Language: Английский

Citations

5
Above‐ground plant metabolomic responses to plant–soil feedbacks and herbivory DOI Creative Commons
Martine Huberty, Young Hae Choi, Robin Heinen

et al.

Journal of Ecology, Journal Year: 2020, Volume and Issue: 108(4), P. 1703 - 1712

Published: March 30, 2020

Abstract Understanding the causes of variation in foliar plant metabolomes is essential for our understanding ecological interactions between plants and other organisms. It well‐accepted that herbivory alters metabolites leaves. However, soil (micro)organisms can also induce such changes. We generated plant‐specific legacies by growing 12 species individually a common starting soil. Then we planted all soils exposed subset to herbivory. then used 1 H nuclear magnetic resonance analyse shoot responding plants. Above‐ground altered metabolomes. In most species, legacy more strongly affected than Synthesis . Our results show plant‐induced changes alter grow later those soils. Such below‐ground effects have far‐stretching consequences above‐ground multitrophic as these often depend on chemical composition. Recently, plant–soil feedbacks received considerable attention studies, study now highlights be an important determinant unexplained intraspecific composition among

Language: Английский

Citations

35
Fruits, frugivores, and the evolution of phytochemical diversity DOI
Susan R. Whitehead, Gerald F. Schneider, Ray Dybzinski

et al.

Oikos, Journal Year: 2021, Volume and Issue: 2022(2)

Published: June 14, 2021

Plants produce an enormous diversity of secondary metabolites, but the evolutionary mechanisms that maintain this are still unclear. The interaction hypothesis suggests complex chemical phenotypes maintained because different metabolites benefit plants in pairwise interactions with a other organisms. In synthesis, we extend to consider fruits, as potential hotspots both antagonists and mutualists, likely important incubators phytochemical diversity. We provide case study focused on Neotropical shrub Piper reticulatum demonstrates: 1) fruits have cascading effects for shaping outcome mutualistic antagonistic fruit–frugivore interactions, and; 2) can harbor substantially higher levels than leaves, even though leaves been primary focus plant ecology research decades. then suggest number priorities integrating make specific, testable predictions patterns should emerge if fruit has helped shape Testing these range systems will new insight into driving frugivory seed dispersal improved, whole‐plant perspective trait evolution.

Language: Английский

Citations

32
Chemical Ecology and Olfaction in Short-Horned Grasshoppers (Orthoptera: Acrididae) DOI
Mari Nakano, Mary Morgan‐Richards, Steven A. Trewick

et al.

Journal of Chemical Ecology, Journal Year: 2022, Volume and Issue: 48(2), P. 121 - 140

Published: Jan. 10, 2022

Language: Английский

Citations

21
Combination of GC-MS Molecular Networking and Larvicidal Effect against Aedes aegypti for the Discovery of Bioactive Substances in Commercial Essential Oils DOI Creative Commons
Alan César Pilon,

Marcelo Del Grande,

Maíra Rosato Silveiral Silvério

et al.

Molecules, Journal Year: 2022, Volume and Issue: 27(5), P. 1588 - 1588

Published: Feb. 28, 2022

Dengue is a neglected disease, present mainly in tropical countries, with more than 5.2 million cases reported 2019. Vector control remains the most effective protective measure against dengue and other arboviruses. Synthetic insecticides based on organophosphates, pyrethroids, carbamates, neonicotinoids oxadiazines are unattractive due to their high degree of toxicity humans, animals environment. Conversely, natural-product-based larvicides/insecticides, such as essential oils, efficiency, low environmental can be easily scaled up for industrial processes. However, oils highly complex require modern analytical computational approaches streamline identification bioactive substances. This study combined GC-MS spectral similarity network approach larvicidal assays new strategy discovery potential substances biological samples, enabling systematic simultaneous annotation 20 through LC50 assays. allowed rapid intuitive distribution patterns between families metabolic classes clusters, prediction properties acyclic monoterpene derivatives, including citral, neral, citronellal citronellol, acetate forms (LC50 < 50 µg/mL).

Language: Английский

Citations

19
Understanding the phytochemical diversity of plants: Quantification, variation and ecological function DOI Creative Commons
Hampus Petrén, Redouan Adam Anaia, Kruthika Sen Aragam

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: March 25, 2023

Abstract Plants produce a great number of phytochemical compounds mediating variety different functions. Recently, diversity (chemodiversity), way which to quantify the complex phenotype formed by sets phytochemicals, has been suggested be important for function. However, no study systematically examined potential (in)direct functional importance chemodiversity on general level, partly due lack an agreement how this aspect plant phenotype. This paper four aims: 1) We discuss (deconstructed into components richness, evenness and disparity) may aspects that are ecologically relevant. 2) review literature examine methodological practices, explore ecological patterns variability in across levels biological organization, investigate role interactions between plants other organisms. 3) provide framework facilitating decisions measure is best used contexts. 4) outline open questions avenues future research area. A more thorough understanding will increase our knowledge compounds, they shape their environment.

Language: Английский

Citations

12