Abstract Detail

Biogeography

Jiménez-Mejías, Pedro [1], Míguez, Mónica [2], Benítez, Carmen Benítez [3], García-Moro, Pablo [1], Sanz-Arnal, María [1], Barrett, Russell [4], Cano, Asunción [5], Donadío, Sabina [6], Fernandez-Mazuecos Santa Teresa, Mario [7], Ford, Kerry A. [8], Gebauer, Sebastian [9], Hipp, Andrew [10], Hoffman, Matthias [11], Larridon, Isabel [12], Léveillé-Bourret, Etienne [13], Mairal, Mario [14], Márquez-Corro, José Ignacio [15], Muñoz-Schüler, Paulo [16], Otero, Ana [17], Penneckamp, Diego [18], Roalson, Eric [19], Spalink, Daniel [20], Starr, Julian [21], Villaverde, Tamara [22], Wilson, Karen [23], Luceño, Modesto [24], Martin-Bravo, Santiago [2].

DANZ: a comparative study of plant diversification mechanisms involved in the Disjunction between America and New Zealand.

We here present DANZ, a research project recently funded by Spanish Government that involves a number of international collaborators. DANZ aims to investigate the diversification mechanisms that explain differences in biodiversity patterns in the Southern Hemisphere. Specifically, we will try to unravel the dynamics of evolutionary radiations in a comparative framework composed of two disjunct areas (South America and New Zealand) with remarkable biogeographic affinities that go back to the Gondwanan supercontinent. We will examine if detected evolutionary radiations are linked to biotic (e.g. ecomorphological key innovations) or abiotic factors (e.g. climatic changes or physical isolation). In addition, the possible relationship between the colonization of new territories by a lineage and the increase in its diversification rate (dispersification) will be also assessed. To this purpose, we have chosen three lineages of a megadiverse angiosperm genus (Carex, Cyperaceae). While Carex is more diversified in temperate and cold regions of the Northern Hemisphere, it has colonized the Southern Hemisphere on several independent events. We chose three monophyletic groups (sections Junciformes, Echinochlaenae and Uncinia) that are almost exclusively distributed and shared between South America and New Zealand, where they display a high endemicity. The three lineages show remarkably contrasting patterns in their species richness between both regions: Junciformes is more diverse in South America, Echinochlaenae in New Zealand, and Uncinia is equally diverse in both areas. We will try to elucidate the diversification processes generating such different diversity outcomes at different evolutionary levels (whole section and shallow species groups) using both traditional sequencing (Sanger) and high-throughput genome sequencing methods (Hyb-Seq, GBS). We will rely on an integrative analytical approach assembled through multidisciplinary tools (phylogenetic reconstructions, dating, biogeographic analysis, evolution of bioclimatic niche, characterization of functional traits, etc). Our study has special relevance to understand, in an evolutionary context, the evolutionary response of organisms to environmental changes. This is critical under the current global warming scenario, against which cold-adapted plants as Carex species could be highly vulnerable, all the more given the scarcity of these habitats in the Southern Hemisphere.

1 - Universidad Autónoma De Madrid, Biología, Campus De Cantoblanco, Calle Darwin, 2, Madrid, 28049, Spain
2 - Universidad Pablo de Olavide, Biología Molecular e Ingeniería Bioquímica, Ctra. de Utrera km 1, Seville, Seville, 41013, Spain
3 - Universidad Pablo De Olavide, Carretera Utrera, Km1, S.n., Seville, SE, 41013, Spain
4 - Royal Botanic Gardens and Domain Trust, National Herbarium of New South Wales, Mount Annan, NSW 2567, Australia
5 - Universidad Nacional Mayor de San Marcos, Museo de Historia Natural, Avda. Arenales 1256, Lima, Lima, Lima 11, Peru
6 - Instituto de Botánica Darwinion (CONICET-ANCEFN), San Isidro, Buenos Aires, Argentina
7 - Universidad Autónoma de Madrid, Biología, Campus De Cantoblanco, Calle Darwin, 2, Madrid, Madrid, 28049, Spain
8 - Manaaki Whenua - Landcare Research, Systematics, 54 Gerald Street, Lincoln, Canterbury, 7640, New Zealand
9 - Martin Luther University Halle-Wittenberg, Systematic Botany, Neuwerk 21, Halle, 06108, Germany
10 - The Morton Arboretum, 4100 Illinois Route 53, Lisle, IL, 60532, United States
11 - Martin Luther University Halle-Wittenberg, Geobotany and Botanical Garden, Am Kirchtor 3, Halle, 06108, Germany
12 - Royal Botanic Gardens Kew, Royal Botanic Gardens Kew, Royal Botanic Gardens Kew, Richmond, LON, TW9 3AE, United Kingdom
13 - Université de Montréal, Biological Sciences, 1375 Avenue Thérèse-Lavoie-Roux, Montréal, Québec, H2V 0B3, Canada
14 - Universidad Complutense de Madrid, Biodiversidad, Ecología y Evolución, C/ José Antonio Novais, 12, Ciudad Universitaria, Madrid, Madrid, 28040 , Spain
15 - Royal Botanic Gardens, Kew, Herbarium, Kew, Richmond, London, TW9 3AQ, UK
16 - Universidad de Concepción, Ciencias Naturales y Oceanográficas, Barrio Universitario s/n, Concepción, Casilla 160-C, Chile
17 - The Field Museum, Grainger Bioinformatics Center, 1400 S DuSable Dr., Chicago, IL, 60605, United States
18 - Universidad Austral de Chile, Ciencias Forestales y Recursos Naturales, Valdivia, P.O. Box 567, Chile
19 - Washington State University, School Of Biological Sciences, Abelson Hall 339, Pullman, WA, 99164, United States
20 - Texas A&M University, Ecosystem Science And Management, 2138 TAMU, College Station, TX, 77802, United States
21 - Ottawa, Department Of Biology, Gendron Hall, Room 160, 30 Marie Curie, Ottawa, ON, K1N 6N5, Canada
22 - Universidad Rey Juan Carlos, Área de Biodiversidad y Conservación, Calle Tulipán s/n, Móstoles, Madrid , 28933, Spain
23 - Royal Botanic Gardens & Domain Trust, 6 Birchgrove Road, Balmain, NSW, 2041, Australia
24 - Pablo De Olavide University, Molecular Biology And Biochemical Engineering, Cta. Utrera, Km. 1, Seville/Seville, 41013, Spain

Keywords:
adaptive radiation
Disjunction
Cyperaceae
Exaptation
Gondwana
Neotropics
New Zealand
Dispersification.

Presentation Type: Poster
Number: PBG004
Abstract ID:466
Candidate for Awards:None