Annals of Botany, Journal Year: 2023, Volume and Issue: 132(6), P. i - iv
Published: Nov. 3, 2023
Language: Английский
Evolution & Development, Journal Year: 2025, Volume and Issue: 27(2)
Published: March 28, 2025
ABSTRACT Shifts between pollinators are a major driver in the evolution and diversification of angiosperms often involve changes flower morphology. These morphological differences typically originate during development, highlighting importance integrating ecological developmental studies. Corolla tube length, particular, is key trait specialized plant‐pollinator interactions. Here, we compared development two closely related Salvia species with contrasting corolla lengths: guaranitica , pollinated by hummingbirds, stachydifolia primarily bees. We characterized trajectories, floral duration, patterns cell growth proliferation. Both shared similar allometric differing only their prolongation, suggesting ontogenetic scaling. However, S. exhibited longer faster growth, resulting larger final size to . was linked proliferation early stages bud rapid anisotropic elongation later stages. Additionally, observed rates across basal, middle, distal regions tube. findings suggest that shifts pollination syndromes may occur without basic patterns, but through scaling accompanied heterochronic changes.
Language: Английский
Citations
0
Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(10)
Published: Oct. 1, 2024
Tropical mountain ecosystems harbor diverse biological communities, making them valuable models for exploring the factors that shape ecological interactions along environmental gradients. We investigated spatial and temporal drivers of plant-hummingbird interaction networks across three forest types (pine-oak, fir, subalpine) a tropical high gradient in western Mexico (2400 to 3700 m.a.s.l.). measured species abundance, diversity, morphology, frequencies. Plant diversity metrics significantly declined highest elevation subalpine forest, whereas hummingbird remained consistent elevations. Interaction were similarly nested elevations, but they more specialized where lower plant richness higher floral abundance led greater resource partitioning among hummingbirds. Plant-hummingbird larger less during dry season, driven by abundance. Species turnover explained network variation elevational gradient, while rewiring arrival migratory hummingbirds changes between seasons. Phenological overlap was most important driver observed frequencies elevations Flower had minor influence on at low- mid-elevation networks, significant dry- rainy-season networks. Morphological matching low-elevation season. phylogenetic relatedness negligible effects patterns, phylogeny influenced feeding preferences high-elevation Our findings highlight role turnover, rewiring, phenological structuring with specific varying High-elevation play crucial as reservoirs resources both resident resource-scarce periods, emphasizing their importance maintaining biodiversity
Language: Английский
Citations
1
Journal of Systematics and Evolution, Journal Year: 2024, Volume and Issue: 63(1), P. 115 - 133
Published: Dec. 15, 2024
Abstract Adaptive radiation is usually triggered by great in situ or ex environmental changes. How an adaptive occurs on lands and how species richness relates to morphodisparity have been a major focus of evolutionary biology. Petrocodon , diversified the southeastern Qinghai–Tibet Plateau (QTP), represents ideal model address these questions. To elucidate dynamics we took integrative approach, including phylogenetic, dating, disparity versus diversity, pollination, gene expression analyses. with six clades has experienced following QTP uplift. Multiple modes floral diversity occur process that are directly linked their colonizing new environments diversification geographic expansion. Pollination analyses suggest accelerated emergence de novo mutations might be relevant multiplex pollinator shifts . For first time plants, report decreased genetic constraints architecture uplift generated abundant morphological variants, which were further targeted selection for ecological divergence. The multiple may attributed repeated modifications already evolved traits subsequent expansion Our findings shed novel light interplay ecological, developmental relation trajectory changes responses disturbance terrestrial plant group.
Language: Английский
Citations
1
Botanical Journal of the Linnean Society, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 20, 2024
Abstract Reproductive barriers and divergent traits may occur between populations of the same species occurring at different habitat types. Here, we investigated reproductive compatibility flower morphology eight Epidendrum fulgens (Orchidaceae) distributed in two disjunct environments: coastal sand dunes inland rock outcrops. We potential isolation using artificial hand pollination experiments, considering fruit set seed viability as proxies for pre- postzygotic barriers, respectively. For investigation, analysed shape flowers a geometric morphometric approach. Contrary to our expectations, found high levels (0.85) (0.73) crosses ecotypes, suggesting lack barriers. Regarding floral morphology, canonical variate analysis revealed all parts were significantly ecotypes (P < .05), while Procrustes ANOVA on symmetric components indicated lateral sepals = .005) ventral sepal .011) different. Considering that both are habitats, morphological divergence be affected by specific abiotic conditions affecting development and/or pollinator assemblages. Despite differences, absent, from environments merge upon secondary contact. Our contrasting results highlight importance multidisciplinary approaches providing insights into processes operating during early stages speciation.
Language: Английский
Citations
0
Annals of Botany, Journal Year: 2023, Volume and Issue: 132(6), P. i - iv
Published: Nov. 3, 2023
Language: Английский
Citations
0