Created 10/01/2019 Updated 15/01/2019
28 Jan
2019

In the context of the ‘Groupement de Recherche International: Diversity, Evolution and Biotechnology of Marine Algae’ (http://www.sb-roscoff.fr/fr/station-biologique-de-roscoff/la-station/projets-europeens/gdri-diversity-evolution-and-biotechnology-marine-algae) we are organizing a workshop on"Sex and Reproduction in Marine Algae", 28-30 January 2019, at the Station Biologique de Roscoff, France.

The aim of this workshop is to bring together researchers interested in different aspects of algal reproduction (both phytoplankton and macroalgae) to share expertise with diverse approaches. Important goals include:

1) to discuss on how we can gain novel insights into important, yet unresolved evolutionary questions using marine algae as model systems;

2) to identify opportunities, challenges and bottlenecks in the study of mating and genetic systems in algae;

3) to determine how new forms of data (large field population datasets/model system datasets, functional approaches) can be used to make progress in these areas.

4) to debate how we can couple the study of various aspects of the evolution and function of genetic systems, including the evolution of sex and recombination, inbreeding vs. outcrossing and the importance of sex determination systems, in order to pinpoint important parameters to be measured that will later be used in more theoretical/predictive approaches such as regarding the development of breeding programs for the seaweed industry.

During two full days, besides review talks by twenty leading scientists, covering a large panel of expertise (marine genomics, genetics, ecology, microbiology, mathematics, evolution), we deliberately chose to allot time for in-depth discussions that will be organized by topic to ensure effective outcomes for each scientific session. A poster session is also organized.

 

Preliminary Program

Day 1 28/1/2019

 

14:00

Opening and welcome

 

Evolution of sex and sexes - chairs: Coelho Susana/Roze Denis

14:30

Piganeau Gwenaël - Sex in the smallest photosynthetic eukaryote: Ostreococcus

15:00

Le Gac Mickaël - Sexual reproduction within the dinoflagellate Alexandrium minutum

15:30

Roze Denis - tba

16:00

coffee break

16:30

Coelho Susana - UV sex chromosomes in the brown algae

17:00

Avia Komlan - Genetic diversity in the UV sex chromosomes of the brown alga Ectocarpus

17:30

Ferrante Mariella - Molecular mechanisms regulating sexual reproduction and mating type determination in the diatom Pseudo-nitzschia multistriata

18:00

Discussion /posters

19:30

banquet

Day 2 29/1/2019

 

 

Life cycles/reproductive modes - chairs : Cock Mark /Ferrante Mariella

9:00

Guillou Laure - Origin of the sexual reproduction in Myzozoan

9:30

Kourtchenko Olga - Controlling sexual reproduction in a marine diatom

10:00

Von Dassow Peter - Life cycle changes in evolutionary history and ecological distributions of the Emiliania/Gephyrocapsa genus

10:30

coffee break

11:00

Frada Miguel - Life cycle complexities of the coccolithophore Emiliania huxleyi

11:30

De Clerck Olivier - Fertility, gamete release and early development in the brown alga Dictyota dichotoma

12:00

Cock Mark - tba

12:30

Discussion

13:00

Lunch

 

Consequences of sex/asex for population dynamics - chairs: Valero Myriam/von Dassow Peter

14:30

Glémin Sylvain - Adaptation and maladaptation in self-fertilizing populations

15:00

Lenormand Thomas- tba

15:30

Arnaud Sophie/Stoeckel Solenn - The challenge of asexuality in population genetics: how wrong can we be?

16:00

coffee break

16:30

Krueger Stacy - How labile are red seaweed reproductive modes?

17:00

poster/perspectives discussions (preparation summer school, etc)

19:30

dinner in town

Day 3 30/1/2019

Evolution of reproductive isolation/speciation - chairs: Pearson Gareth/le Gac Mickaël

9:00

Viard Frédérique - Could selfing rates variation play a role in the introduction success of non-native seaweeds?

9:30

Pearson Gareth - Just add water and mix: From peripatric divergence and local introgression to “instant speciation” in fucoids

10:00

Guillemin Marie Laure - Shift between sexual and asexual reproduction in the red alga Gracilaria chilensis: possible ecological drivers and impact on populations.

10:30

coffee break

11:00

Destombe Christophe - Sex phenotypes in Rhodophyta: the example of G.gracilis/G.dura complex species.

11:30

Valero Myriam - Reproduction in kelps: importance of inbreeding and outbreeding depression in haploid-diploid species.

12:00

final discussions