Prof. Marcelo Dornelas , University of Campinas, Brasil
Date: 10. November 2022
Time: 13:30 – 15.00
Location:room B9110 in Aurora Wageningen
Registration: please use this link
Credits: 0.1
Prof Dr. Marcelo Dornelas will give a masterclass for 10 selected EPS PhD students with theoretical and hands on training. More information follows next week.
Masterclass: 12 and 13 December 2022
Credits:0.6
Participants: max. 10, selection based on abstract
Registrations: please send an email to Juliane.Teapal@wur.nl
Abstract
One of the most fascinating questions in evolutionary biology is how novelties such as new organs or novel body plans arise. Flowers are doubtlessly the most intriguing examples of evolutionary innovation and have been a major contributor to the diversification of angiosperms. Floral structure is generally conserved and four main organ types (sepals, petals, stamens and carpels) are present in most angiosperm species. However, a few plant taxa show flowers that deviate from this structure. For example, plants from the genus Passiflora produce flowers containing evolutionary novelties such as the corona and the androgynophore. These structures might have arisen as adaptations to particular types of pollinators. The recent advances in our understanding of the mechanisms involved in the evolution of floral phenotypes is mainly due to the use of diverse approaches ranging from morphological and developmental comparative studies, to phylogenetic analyses of important developmental regulators, as well as gene function analysis in non-model plants. We will present data from our current research on the developmental regulation of evolutionary novelties in passionflowers.
Moraes TS, Rossi ML, Martinelli AP, Dornelas MC (2022) Morphological and anatomical traits during development: Highlighting extrafloral nectaries in Passiflora organensis. Microsc Res Tech 85:2784-2794. https://doi.org/10.1002/jemt.24127
Avila RS, Rocha DI, Nunes CEP, Galetto L, Dornelas MC, Sazima M (2022) Divergent strategies of nectar secretion in two bat-pollinated Passiflora species. Flora 293:152114. https://doi.org/10.1016/j.flora.2022.152114
Rocha DI, Monte-Bello CC, Sobol S, Samach A, Dornelas MC (2014) Auxin and physical constraint exerted by the perianth promote androgynophore bending in Passiflora mucronata L. (Passifloraceae). Plant Biology 17:639-646. https://doi.org/10.1111/plb.12295
Scorza LCT, Rossi ML, Dornelas MC (2014). Vacuolar remodelling mediates touch-induced androgynophore movement in Passiflora (Subg. Decaloba, Sect. Xerogona) flowers. Flora 209: 613-619. https://doi.org/10.1016/j.flora.2014.07.003
Thursday, November 10, 2022
On location
Wageningen Campus
, Wageningen