Structural diversity of elaiophores in Argentine species of Malpighiaceae: morphology, anatomy, and interaction with pollinators.

Autor: Aliscioni SS; Instituto de Botánica Darwinion (IBODA), Labardén 200, B1642HYD, San Isidro, Provincia de Buenos Aires, Argentina. saliscioni@darwin.edu.ar.; Universidad de Buenos Aires, Facultad de Agronomía, Cátedra de Botánica General, Av. San Martín 4453, C1417DSE, Ciudad Autónoma de Buenos Aires, Argentina. saliscioni@darwin.edu.ar.; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina. saliscioni@darwin.edu.ar., Gomiz NE; Universidad de Buenos Aires, Facultad de Agronomía, Cátedra de Botánica General, Av. San Martín 4453, C1417DSE, Ciudad Autónoma de Buenos Aires, Argentina.; Instituto de Ciencias (ICI), Módulo 2, Universidad Nacional de General Sarmiento, Juan María Gutiérrez 1150, CP1613, Los Polvorines, Provincia de Buenos Aires, Argentina., Agüero JI; Universidad de Buenos Aires, Facultad de Agronomía, Cátedra de Botánica General, Av. San Martín 4453, C1417DSE, Ciudad Autónoma de Buenos Aires, Argentina.; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina., Torretta JP; Universidad de Buenos Aires, Facultad de Agronomía, Cátedra de Botánica General, Av. San Martín 4453, C1417DSE, Ciudad Autónoma de Buenos Aires, Argentina.; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.
Jazyk: angličtina
Zdroj: Protoplasma [Protoplasma] 2022 May; Vol. 259 (3), pp. 789-807. Date of Electronic Publication: 2021 Sep 14.
DOI: 10.1007/s00709-021-01699-x
Abstrakt: Most Neotropical Malpighiaceae species are characterized by having zygomorphic flowers and oil glands in the sepals called elaiophores; these floral characteristics are associated with a particular pollination syndrome through oil-collecting bees. This work proposes a study about the structural characteristics of elaiophores in 18 species of Malpighiaceae present in Argentina. The main objectives are to describe the morphology and anatomy of the elaiophores, to detect variation in the number of glands, to compare similarities or differences in elaiophores of species belonging to different lineages, and to know about the potential pollinators and their association with the structural traits of the elaiophores. The morphology and the anatomy were studied using traditional methods of scanning electron and bright-field microscopes. Field trips were carried out to capture oil-collecting bee species on flowers, in different natural populations. Different measurements were taken in the flowers, elaiophores, and oil-collecting bees and were statistically analyzed. Although elaiophores showed a common pattern, some particularities in number, morphology, and anatomy were detected; few of these seem to be restricted to some groups of species phylogenetically related. As regards pollinators, a positive tendency was observed between the size of the flowers, elaiophores, and oil-collecting bees. However, the thickness of the cuticle presented a negative association with the size of the elaiophore and consequently with the floral diameter, which could be presumably related to the foraging behavior and/or the structure of oil-collecting apparatus of the bee species.
(© 2021. The Author(s), under exclusive licence to Springer-Verlag GmbH Austria, part of Springer Nature.)
Databáze: MEDLINE
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