Chapter 1 Species
This chapter support the choice in species for the study.
| Family | Genus | Species | Annual rings | Reproductive phenology | Genome (Mbp) |
|---|---|---|---|---|---|
| Caryocaraceae | Caryocar | glabrum | Species | Annual | 899 (48) |
| Clusiaceae | Moronobea | coccinea | Species | Annual; Biennal | 1508 (NA) |
| Clusiaceae | Platonia | insignis | Species | Biennal | 1748 (334) |
| Clusiaceae | Symphonia | globulifera | Species | Annual | 1836 (NA) |
| Dichapetalaceae | Tapura | capitulifera | Genus | NA | 948 (NA) |
| Fabaceae | Dicorynia | guianensis | Species | Supra-annual | 691 (NA) |
| Fabaceae | Vouacapoua | americana | Species | Supra-annual | 1028 (NA) |
| Goupiaceae | Goupia | glabra | Species | NA | 482 (NA) |
| Lauraceae | Sextonia | rubra | NA | NA | 1354 (NA) |
| Lecythidaceae | Eschweilera | coriacea |
|
NA | 1040 (NA) |
| Myristicaceae | Virola | michelii | Genus | NA | 1051 (NA) |
| Salicaceae | Laetia | procera | NA | NA | 419 (6) |
| Sapotaceae | Pradosia | cochlearia | NA | NA | 983 (NA) |
| Vochysiaceae | Qualea | rosea | NA | NA | 1179 (92) |
1.1 Dicorynia guianensis
Currently first choice due to:
- commercial interest
- rings
- relatively small genome (691 Mbp)
- fructification (irregular but no masting)
About phenology:
- Loubry D., Déterminisme du comportement phénologique des arbres en forêttropicale humide de Guyane française (5° lat. N.), thèse, Université Paris VI, 104-123,1994.
- Caron, H., Dutech, C., & Bandou, E. (2008). Variations spatiotemporelles du régime de reproduction de Dicorynia guianensis Amshoff (Caesalpiniaceae) en forêt guyanaise, (July), 2008
- Norden, N., Chave, J., Belbenoit, P., Caubère, A., Châtelet, P., Forget, P. M., & Thébaud, C. (2007). Mast fruiting is a frequent strategy in woody species of eastern South America. PLoS ONE, 2(10). https://doi.org/10.1371/journal.pone.0001079
- Jésel Sébastien. 2005. Ecologie et dynamique de la régénération de Dicorynia guianensis (Caesalpiniaceae) dans une forêt guyanaise. Paris : INA-PG, 288 p. Thèse de doctorat : Ecologie forestière : Institut national agronomique Paris-Grignon
1.2 Sextonia rubra
The objectives of TREEMUTATION are synergistically complementary with those of the proposed CEBA strategic project TREE-D. If both projects are retained, one of the three species to be studied will be a Sextonia rubra (Mez) van der Werff(Lauraceae) tree, an economically significant tree for French Guiana with remarkable antifungal and insecticidal properties (Rodrigues et al., 2011). Given that TREE-D will fell the target tree, the sampling design will be adapted accordingly: the target tree will not be part of any permanent plot, data on light environment and tree architecture would need to be obtained prior to tree cutting, and samples along the trunk will be incorporated. Furthermore, as Sextonia rubra is known to produce seasonal variation in wood chemistry (Ponton, Dupouey, Rose, Giuliani, & Thiaudière, 2015), it could be aged dendrochronologically, so each branching event could be dated unambiguously. The collaboration between both projects will allow the study of the correlation between intra-individual genetic, endophytic, and chemical variance, allowing us, for the first time, to have an intimate look at the potential interplay among these three aspects of a tree.
1.3 Eschweilera coriacea
One species of interest to include is Eschweilera coriacea (DC.) S.A. Mori (Lecythidaceae), the third-most abundant angiosperm tree in Amazonia (ter Steege et al., 2013)with high genetic diversity (Heuertz et al., 2019)and a broad ecological niche (S. Schmitt, pers. obs) in French Guiana and for which 15 individuals > 30 cm diameter at breast height (28 ind. > 10cm) are accessible from the COPAS.Local adaptive processes in Eschweilera coriacea and other members of the Parvifolia clade are currently being studied using gene capture, phenotypic traits, and detailed habitat data (Sylvain Schmitt’s thesis); having a full Eschweilera genome would facilitate the annotation of genic regions for research on selection processes (positive, negative, polygenic (Pritchard, Pickrell, & Coop, 2010; Zeng et al., 2018)). It would also benefit collaborative research on phylo-and biogeography in the Lecythidaceae (projects CEBA RARETREE and GUYAMAZON LECYTOMICS).