Mapping sagebrush volatile chemotypes along an elevational gradient

Plant Ecology, Journal Year: 2025, Volume and Issue: unknown

Published: March 15, 2025

Language: Английский

---

Different tools for different trades: contrasts in specialized metabolite chemodiversity and phylogenetic dispersion in fruit, leaves, and roots of the neotropical shrubs Psychotria and Palicourea (Rubiaceae)

Plant Biology, Journal Year: 2025, Volume and Issue: unknown

Published: March 22, 2025

Abstract Plants produce an astonishingly diverse array of specialized metabolites. A crucial step in understanding the origin such chemodiversity is describing how manifests across spatial and ontogenetic scales relevant to plant–biotic interactions. Focusing on 21 sympatric species Psychotria Palicourea sensu lato (Rubiaceae), we describe patterns metabolite diversity using a combination field collections, untargeted metabolomics, ecoinformatics. We compare α, β, γ metabolites expanding leaves, unripe pulp, immature seed, ripe mature fine roots. Within species, fruit tissues from stages had ≥α than ≤β leaves. Pooled highest all organs, combined higher incidence organ‐specific mass spectral features Roots ≤α leaves lowest β organs. Phylogenetic correlations chemical distance varied by plant organ class. Our results organs provide support for contributions chemodiversity. This study contributes growing within evolutionary ecology biological diversification. Future studies combining our data with biotic interaction experiments can test existing hypotheses roles ecological interactions evolution

Language: Английский

---

Disentangling dimensions of phytochemical diversity: alpha and beta have contrasting effects on an insect herbivore

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

---

Chemical diversity rather than cultivar diversity predicts natural enemy control of herbivore pests

Ecological Applications, Journal Year: 2021, Volume and Issue: 31(3)

Published: Jan. 15, 2021

Cultivar mixtures have been studied for decades as a means pest suppression. The literature, however, shows large variability in outcomes, suggesting that we are unable to create consistently suppress insect pests and attract natural enemies. A key gap our understanding of how cultivar influence control is few studies examined the plant traits or mechanisms by which diversity affects their interactions with chemistry mixture one trait dimension likely influential ecology because chemical alter predators herbivores forage interact. To understand influences predators, fully crossed predator presence absence monocultures, bicultures, tricultures three chemotypes tomato differed odor (terpenes) surface (acyl sugars) caged field experiment. We found direct effects chemotype on herbivore performance were strongest bicultures depended sex, these typically acted through growth rather than survival. top-down suppression enemies between classes diversity. Odor interfered ability hunt effectively, whereas did not. Our results suggest phytochemical can contribute agroecosystems, but implementing it will require engineering using trait-based approaches account biology system.

Language: Английский

---

Soil chemical legacies trigger species‐specific and context‐dependent root responses in later arriving plants

Plant Cell & Environment, Journal Year: 2021, Volume and Issue: 44(4), P. 1215 - 1230

Published: Jan. 17, 2021

Abstract Soil legacies play an important role for the creation of priority effects. However, we still poorly understand to what extent metabolome found in soil solution a plant community is conditioned by its species composition and whether chemical affect subsequent during assembly. To test these hypotheses, collected solutions from forb or grass communities evaluated how affected growth, biomass allocation functional traits ( Dianthus deltoides ) Festuca rubra ). Results showed that metabolomes differed diversity. While did not have any effect on F . , root foraging D decreased when plants received community. Structural equation modelling reduced exploration arose via either growth‐dependent pathway (forb metabolome) trait‐dependent (grass metabolome). Reduced was connected decrease total N uptake. Our findings reveal can create belowground effects affecting later arriving plants.

Language: Английский

---