iDiv Annual Conference 2026

Generative Trait Variability of Cyperaceae Juss. In Context of Phylogeny and Plant Ecology

Not scheduled

20m

Poster Approaches of integrative biodiversity research

Speaker

Dr Sebastian Gebauer (1Senckenberg Institute for Plant Form and Function Jena (SIP) Jena - Leibniz Institution for Biodiversity and Earth System Research, Philosophenweg 12, Jena, Germany, 2Institute of Biodiversity, Ecology and Evolution, Friedrich Schiller University Jena, Philosophenweg 16, Jena, Germany)

Description

Homoplasy is widespread in macro- and micromorphological traits of vascular plants, particularly in vegetative characters, which often show limited phylogenetic signal. In contrast, generative traits such as floral characteristics are generally considered more conserved, as demonstrated for embryo architecture and development in Cyperaceae Juss. However, recent work has revealed substantial interspecific variation in generative traits among Poales, notably in the megadiverse genus Carex. Cyperaceae are key components of diverse ecosystems, often forming dominant or monodominant communities in which closely related and distantly related lineages co-occur. This raises fundamental questions about the role of generative trait differentiation in community assembly. We aim to develop a standardized, high-throughput protocol for quantifying pollen traits using imaging flow cytometry. Focusing initially on Carex, we will generate reproducible trait data to assess inter- and intraspecific variation in pollen, generative and other plant functional traits. Especially, magnitude of intraspecific variation may be critical for ecological applications or adaptation to changing environmental conditions, is still poorly understood. The integration of herbarium specimens offers additional potential to broaden spatial and temporal coverage. Overall, this study establishes a methodological framework to link trait variation with phylogenetic and ecological patterns.