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Home > Staff > Personal pages > Evolution des Angiospermes > Laetitia Carrive

Laetitia Carrive

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PhD Student

PhD Student

Address:

  • Laboratoire Écologie Systématique et Évolution (UMR 8079)
  • Team Evolution of Angiosperms
  • Université Paris-Sud, Bâtiment 360
  • 91405 ORSAY Cedex



Contact:

Laetitia

Research Education Teaching Publications Meetings French version

Research

PhD project: Perianth evolution in Ranunculaceae (Angiospermae)
Advisor: Sophie Nadot

Ranunculaceae are a big family of flowering plants comprising ca. 2500 species. They have a worldwide distribution, mostly in temperate climates. This family includes common species such as the buttercups, columbines, monkshoods and hellebores. Although Ranunculaceae are very easy to recognize in the field and their well-established monophyly, it lacks a stable floral formula or morphological synapomorphies of the flower. It would then be interesting to investigate the specificities of “ranunculacean” flowers in the light of recent phylogenetic methods.
With six other families, these plants form the order Ranunculales, of about 4500 species. Flower morphology is highly variable in this group and almost all the diversity of organization in flowers with free parts that we find in the angiosperms in general is found in the Ranunculales. This diversity enables the study of numerous morphologies in a taxon whose size is still manageable in terms of data volume. Furthermore, recent phylogenies of the different families of Ranunculales facilitate the construction of a reference phylogenetic framework, essential to study morphological evolution. I aim to reconstruct the evolution of floral characters in this molecular phylogenetic framework using phylogenetic comparative methods (PCM) based on probabilistic models. I focus on characters linked to phenotypic integration and/or pollination such as:
- The evolution of phyllotaxy (flower organization in whorls or spirals),
- The evolution of differentiation (flower showing different sepals and petals or only one type of sterile parts),
- Many Ranunculaceae bear petals that are highly modified in nectar-producing structures. Did those structures appeared several independent times or only once and then disappeared in some lineages?
- The color of the perianth,
- The number of stamens,
- Etc.
Using ancestral states reconstructions, it will be possible to draw a better picture of the ancestral flower in the Ranunculaceae and so to understand from which morphology the extant flowers evolved. Correlation tests of morphological characters will allow to apprehend the level of integration and to estimate if there are constraints on some traits. At last, the comparison between floral morphology and pollination data will help to evaluate the evolutionary pressure that pollinators apply on floral evolution. Briefly, the goal of my PhD is to, from the ancestral starting point and with evolutionary scenarios given by PCM, to explain in an evolutionary framework the extant diversity of Ranunculaceae flowers.

Education

2014-Today PhD student, Université Paris-Sud
2012-2014 MSc Systematics, Evolution, Paleontology, Université Pierre et Marie Curie, Muséum National d’Histoire Naturelle
2007-2012 BSc Sciences du Vivant, Université Pierre et Marie Curie

Teaching

Teaching at Université Paris-Sud

  • 3rd year GEPVU: Classification of the angiosperms (6h)
  • 2nd year: Field course in the Causses (30h)
  • 1st year: Floristics (21h)

Publications

Sauquet H, von Balthazar M, Magallón S, Doyle J, Endress P, Bailes E, Barroso de Morais E, Bull-Hereñu K, Carrive L, Chartier M, Chomicki G, Coiro M, Cornette R, El Ottra J, Epicoco C, Foster C, Jabbour F, Haevermans A, Haevermans T, Hernández R, Little S, Löfstrand S, Luna J, Massoni J, Nadot S, Pamperl S, Prieu C, Reyes E, dos Santos P, Schoonderwoerd K, Sontag S, Soulebeau A, Städler Y, Tschan G, Wing-Sze Leung A, and Schönenberger J. 2017. The ancestral flower of angiosperms and its early diversification. Nature Communication 8: 16047. Link

Sauquet H, Carrive L, Poullain N, Sannier J, Damerval C, Nadot S. 2015. Zygomorphy evolved from disymmetry in Fumarioideae (Papaveraceae, Ranunculales): new evidence from an expanded molecular phylogenetic framework. Annals of Botany 115: 895–914. Link

Conferences

Carrive L. 2017. Ancestral states reconstruction: example of the perianth in Ranunculaceae. Journées de la Société Française de Systématique (Oct 25-28, 2017; Banyuls-sur-mer, France)

Thomas DC, Arias T, Lundberg M, Couvreur TLP, Sauquet H, Carrive L, Erkens RHJ, Brandao R, Chatrou RW, de Carvalho Lopes J, Xue B, Chaowasku T, Saunders RMK. 2017. Phylogenomics and historical biogeography of the recalcitrant Annonaceae subfamily Malmeoideae. 19th International Botanical Congress (Jul. 23-29, 2017; Shenzhen, China)

Thomas DC, Arias T, Lundberg M, Couvreur TLP, Sauquet H, Carrive L, Erkens RHJ, Brandao R, Chatrou LW, de Carvalho Lopes J, Xue B, Chaowasku , Saunders RMK. 2016. Phylogenomics of the recalcitrant Annonaceae subfamily Malmeoideae. 10th Flora Malesiana Symposium (Jul. 11-15, 2016; Edinburgh, UK).

Carrive L, Massoni J, Sauquet H. 2015. Perianth Evolution in Magnoliidae (Angiospermae): Is there a link between phyllotaxis and fusion? Systematics Association Biennial (Aug. 26-28, 215; Oxford, UK)

Carrive L, Massoni J, Sauquet H. Nov. 2014. Perianth evolution in Magnoliidae (Angiospermae): Is there a link between phyllotaxis and fusion? Journées 2014 de la Société Française de Systématique : "L’arbre du vivant, 30 ans de systématique" (Paris, France).

Sauquet H, Schönenberger J, von Balthazar M, Bailes E, Barroso de Morais E, Bull-Hereñu K, Carrive L, Chartier M, Chomicki G, Coiro M, El Ottra JHL, Epicoco C, Jabbour F, Haevermans T, Hernández R, Löfstrand S, Luna JA, Massoni J, Nadot S, Prieu C, Reyes E, dos Santos P, Schoonderwoerd K, Simonnet F, Soulebeau A, Städler Y, Tschan G, Leung AW-S, Magallón S. Sep. 2014. eFLOWER: Synthesizing data on flowers in the 21st century. Conférence
Internationale de l’UNESCO : « Quels botanistes pour le XXIème siècle ? Métiers, enjeux, opportunités » (Paris, France)

Sauquet H, Schönenberger J, von Balthazar M, Bailes E, Barroso E, Bull K, Carrive L, Chartier M, Chomicki G, Coiro M, El Ottra J, Epicoco C, Jabbour F, Haevermans T, Hernández Gutiérrez R, Leung Wing Sze A, Löfstrand S, Luna-Castro J, Massoni J, Nadot S, Prieu C, Reyes E, dos Santos P, Schoonderwoerd K, Simonnet F, Soulebeau A, Städler Y, Tschan G, Magallón S. Jun. 2014. (poster) eFLOWER: A framework for understanding the evolution and diversification of flowers. Evolutionary Plant Radiations Meeting (Zurich, Suisse)

Carrive L., Massoni J., Sauquet H. Feb. 2014 (poster). Phylogenetic analysis of Magnoliidae fossil flowers. Young Natural History Scientists’ Meeting (Paris, France)

Sauquet H., von Balthazar M., Carrive L., Epicoco C., Haevermans T., Jabbour F., Massoni J., Nadot S., Prieu C., Simonnet F., Tschan G., Schönenberger J.. 2013. eFLOWER : A framework for understanding the evolution and diversification of extant and fossil flowers. Botany 2013 (New Orleans, Louisiana, U.S.A.)

Massoni J., von Balthazar M., Carrive L., Couvreur T., Schönenberger J., Städler Y., Sauquet H. 2013. Fossil calibration of Magnoliidae : Thorough background research significantly improves reliability of molecular age estimates. Invited communication. Botany 2013 (New Orleans, Louisiana, U.S.A.)