First report of glandular staminodes in flowers of Elaeagnaceae (Rosales)
- Autor(en)
- Giseli D. Pedersoli, Simone P. Teixeira, Flávia M. Leme, Anna Maria Louise von Balthazar-Schönenberger, Jürg Schönenberger
- Abstrakt
<p><em>Elaeagnaceae</em> is a poorly understood family within the order <em>Rosales</em>, comprising three genera and approximately 102 monoecious or dioecious species, with flowers that are either diclinous or monoclinous and actinomorphic. Pistillate flowers are typically described as lacking stamens. This study aims to investigate the morphology of developing pistillate flowers in <em>Hippophae rhamnoides</em> and <em>H. salicifolia</em>, examining the absence of stamens from an ontogenetic perspective. Floral buds and flowers were processed for surface and anatomical analysis. No individualized stamen primordia were observed in the floral meristem. However, both species exhibit staminodes, which appear as protrusions on the inner surface of the sepals during late stages of development. These staminodes are glandular, consisting of a uniseriate secretory papillose epidermis. There is no formation of anthers or pollen. Since these species are wind-pollinated, the staminodes do not play a role in attracting pollinators. Their position within the tubular calyx, close to the ovary at anthesis, and their persistence with the calyx in the fruit suggest that they may protect the ovule and seed from herbivory. In other species of <em>Rosales</em>, stamen primordia are rapidly aborted without forming staminodes. This work is the first to report this feature in the family.</p><p><strong>Citation:</strong> Pedersol, G.D., Teixeira, S.P., Leme, F.M., von Balthazar, M. & Schönenberger, J. 2025. First report of glandular staminodes in flowers of <em>Elaeagnaceae</em> (<em>R</em>osales). <em>Revista Jard. Bot. Nac. Univ. Habana</em> 46 (Número especial 1): 122.</p><p>Trabajo presentado en el XIII Congreso Latinoamericano de Botánica. Sesión Estructura, Fisiología y Desarrollo. </p>
- Organisation(en)
- Department für Botanik und Biodiversitätsforschung
- Externe Organisation(en)
- Universidade de São Paulo, Universidade Federal de Mato Grosso do Sul
- Journal
- Revista del Jardín Botánico Nacional
- Band
- 46
- Publikationsdatum
- 11-2025
- Peer-reviewed
- Ja
- ÖFOS 2012
- 106008 Botanik, 106042 Systematische Botanik, 106012 Evolutionsforschung
- Schlagwörter
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/ed00abfa-77e9-413d-a9b5-3d1d60532a2f