Stomatal development in Gnetales

Mature stomata on a leaf of Gnetum gnemon. Image: Rudall and Rice 2019.

Epidermal patterning and stomatal development in Gnetales

Salt A. (2019)

In Botany One May 30, 2019 –


Stomatal development in Ephedra differs significantly from that of Gnetum and Welwitschia, more closely resembling that of other extant gymnosperms. Differences in epidermal pre-patterning broadly reflect differences in growth habit between the three genera.

A new study by Rudall and Rice in Annals of Botany looks at Epidermal patterning and stomatal development in Gnetales. The Gnetales are three families of plants that diverged in the Jurassic, before flowering plants, so they are ancient. However, just three genera have survived to the current day. That means they provide a useful group of plants if you want to examine how stomata have developed over millions of years. Dr Paula Rudall made some time to talk to Botany One about her research.

Published by

Willem Van Cotthem

Honorary Professor of Botany, University of Ghent (Belgium). Scientific Consultant for Desertification and Sustainable Development.

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