Are the floral morphology and anatomy of Galphimia australis, an atypical neotropical Malpighiaceae, associated to a new pollination syndrome?

Autor: Gotelli M; Universidad de Buenos Aires, Facultad de Agronomía, Cátedra de Botánica General, Av. San Martín 4453, C1417DSE, Buenos Aires, Argentina. gotelli@agro.uba.ar.; Consejo Nacional de Investigaciones Científicas Y Técnicas, Buenos Aires, Argentina. gotelli@agro.uba.ar., Aliscioni S; Universidad de Buenos Aires, Facultad de Agronomía, Cátedra de Botánica General, Av. San Martín 4453, C1417DSE, Buenos Aires, Argentina.; Consejo Nacional de Investigaciones Científicas Y Técnicas, Buenos Aires, Argentina.; Instituto de Botánica Darwinion (IBODA), Casilla de Correo 22, B1642HYD, San Isidro, Buenos Aires, Argentina., Kuo PT; Universidad de Buenos Aires, Facultad de Agronomía, Cátedra de Botánica General, Av. San Martín 4453, C1417DSE, Buenos Aires, Argentina., Torretta JP; Universidad de Buenos Aires, Facultad de Agronomía, Cátedra de Botánica General, Av. San Martín 4453, C1417DSE, Buenos Aires, Argentina.; Consejo Nacional de Investigaciones Científicas Y Técnicas, Buenos Aires, Argentina.
Jazyk: angličtina
Zdroj: Protoplasma [Protoplasma] 2023 Jul; Vol. 260 (4), pp. 1047-1062. Date of Electronic Publication: 2022 Dec 13.
DOI: 10.1007/s00709-022-01829-z
Abstrakt: The flowers of the species of Malpighiaceae in the Neotropical Region are relatively uniform in their morphology due to their dependence on oil-collecting bees as their main pollinators. However, many species of the genus Galphimia seem to have acquired a different floral syndrome, lacking markedly zygomorphic flowers and developed elaiophores in the calyx. Likewise, these species present anthers with great development, probably in response to the selection of pollinators that collect pollen. Galphimia australis incorporated some of these traits but also retained some residual characteristics typical of species pollinated by oil bees. This leads to many questions on how these flowers ensure their pollination. Inquiring about the reduction or modification of these characteristics allows us to understand how G. australis achieves a different pollination syndrome. In this research, we carry out a detailed morphological and anatomical study of the flowers and pollen grain devolvement of G. australis and floral visitors were observed and captured. Results were analyzed in order to determine how this species changed from the oil-floral syndrome, typical of neotropical Malpighiaceae, to one syndrome with pollen as the main reward.
(© 2022. The Author(s), under exclusive licence to Springer-Verlag GmbH Austria, part of Springer Nature.)
Databáze: MEDLINE
Externí odkaz: