Abstract
Global transition towards a bioeconomy sets new demands for wood supply (bioenergy, biomaterials, biochemicals, etc.), and the forestry sector is also expected to help mitigate climate change by increasing carbon fixation. For increased biomass production, the use of improved, genetically superior materials becomes a necessity, and vegetative propagation of elite genotypes provides a potential delivery mechanism for this. Vegetative propagation through somatic embryogenesis alone or in combination with rooted cuttings obtained from somatic young trees can facilitate both tree breeding (greater selection accuracy and gains, breeding archives of donor material for making crosses after selection) and the implementation of deployment strategies for improved reforestation materials. To achieve these goals, progress in the efficiency of pine somatic embryogenesis biotechnology has been made for a few commercial pine species, and a better understanding has been gained of the molecular mechanisms underpinning somatic and zygotic embryo development.
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Acknowledgements
The “Genetics and Biotechnology” team of the FCBA is gratefully acknowledged for its contribution to the technical and scientific developments presented throughout this chapter for maritime pine somatic embryogenesis. We especially thank Isabelle Reymond, Francis Canlet, Sandrine Debille, Karine Durandeau, Pierre Alazard and Luc Harvengt. We also thank Alain Bouvet for statistical support.
In France, the maritime pine multiyear project was supported by grants from the “Conseil Régional de la Région Centre” (EMBRYOME project, contract 33639; IMTEMPERIES, contract 2014-00094511), the “Conseil Régional de la Région Aquitaine” (Embryo2011, contract 09012579-045), the French Ministry of Foreign Affairs and the French Ministry of Higher Education and Research through the France/Czech Republic Science Cooperation BARRANDE Program. Data analysis and experiments were made possible through the involvement of INRA’s GenoToul bioinformatics platform in Toulouse (France) and the XYLOFOREST platform (ANR-10-EQPX-16), especially the XYLOBIOTECH technical facility located at INRA Orléans and FCBA Pierroton (France). In Portugal, the preparation of this chapter was supported through projects funded by (1) the European Community’s Seventh Framework Programme (FP7/2007-2013, Grant Agreement N°289841-PROCOGEN), and (2) Fundação para a Ciência e Tecnologia (FCT), through grants GREEN-it (UID/Multi/04551/2013) and IF/01168/2013. In Canada, KK was supported by Natural Resources Canada, Canadian Forest Service. Ms Isabelle Lamarra (NRCan-CFS) is thanked for English editing.
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Lelu-Walter, MA. et al. (2016). Somatic Embryogenesis for More Effective Breeding and Deployment of Improved Varieties in Pinus spp.: Bottlenecks and Recent Advances. In: Loyola-Vargas, V., Ochoa-Alejo, N. (eds) Somatic Embryogenesis: Fundamental Aspects and Applications. Springer, Cham. https://doi.org/10.1007/978-3-319-33705-0_19
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