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Project
Early flowering in trees
The exceedingly long juvenile phase of many tree species impedes several genetic analyses. We aim to solve this by developing early-flowering trees.
Background and Objective
To perform crosses between trees or to study flower development, flowering trees are needed. However, it often takes several decades for trees to flower for the very first time. To solve this problem, early-flowering trees are needed.
To this end, we generated aspen and white poplar (Populus tremula and P. alba) lines carrying the highly conserved flowering gene FLOWERING LOCUS T (FT) under the control of a HEAT SHOCK PROTEIN (HSP) promoter, which allows activation by heat shock treatment. Using this system, both female and male poplars can be induced to flower within a few weeks. We are working on transferring this system to other Salicaceae species.
Thünen-Contact
Duration
Permanent task 5.2007 - 6.2028
More Information
Project status:
ongoing
Publications
- 0
Hönicka H, Briones V, Bein S, Hoffmann P, Heier K, Fladung M (2022) Induction of early flowering in European birch (Betula pendula) through genetic transformation with the FLOWERING LOCUS T gene. In: Plant Sciences for a Sustainable Future : Botanik-Tagung, International Conference of the German Society for Plant Sciences, 2022 Bonn, 28 August - 01 September ; Programme. Deutsche Botanische Gesellschaft, p 160
- 1
Fladung M, Hönicka H (2018) Development of an early flowering system for poplar breeding and biosafety research. In: III International PP1530 Symposium: Genetic Variation of Flowering Time Genes and Applications for Crop Improvement : March 14-16, 2018. pp 22-23
- 2
Fladung M, Hönicka H, Kersten B (2016) Baumblüte im ersten Jahr. Forschungsfelder
- 3
Fladung M, Hönicka H (2016) Forstpflanzenzüchtung auf der Überholspur. AFZ Der Wald 71(14):21-23
- 4
Häggman H, Sutela S, Fladung M (2016) Genetic engineering contribution to forest tree breeding efforts. Forestry Sci 82:11-29, DOI:10.1007/978-74-017-7531-1_2
- 5
Hönicka H, Lehnhardt D, Nunna S, Reinhardt R, Jeltsch A, Briones V, Fladung M (2016) Level of tissue differentiation influences the activation of a heat-inducible flower-specific system for genetic containment in poplar (Populus tremulaL.). Plant Cell Rep 35(2):369-384, DOI:10.1007/s00299-015-1890-x
- 6
Hönicka H, Lehnhardt D, Briones V, Nilsson O, Fladung M (2016) Low temperatures are required to induce the development of fertile flowers in transgenic male and female early flowering poplar (Populus tremulaL.). Tree Physiol 36(5):667-677, DOI:10.1093/treephys/tpw015
- 7
Bentley AR, Jensen EF, Mackey IJ, Hönicka H, Fladung M, Hori K, Yano M, Mullet JE, Armstead IP, Hayes C, Thorogood D, Lovatt A, Morris R, Pullen N, Mutasa-Göttgens ES, Cockram J (2013) Chapter 1 : Flowering time. In: Kole C (ed) Genomics and breeding for climate-resilient crops : Vol. 2 target traits . Berlin: Springer, pp 1-66
- 8
Hönicka H, Lehnhardt D, Polak O, Fladung M (2012) Early flowering and genetic containment studies in transgenic poplar. iForest 5:138-146, DOI:10.3832/ifor0621-005
- 9
Fladung M, Hanke MV (2012) Induktion einer frühzeitigen Blüte bei Pappel und bei Apfel zur Beschleunigung der Züchtung auf Resistenz gegenüber Krankheiten (SpeedBreed). In: Bundesanstalt für Landwirtschaft und Ernährung (ed) Innovationstage 2012 : Forschungs- und Entwicklungsprojekte ; Programm zur Innovationsförderung des Bundesministeriums für Ernährung, Landwirtschaft und Verbraucherschutz. Bonn: Bundesanstalt für Landwirtschaft und Ernährung, pp 36-40
- 10
Hönicka H, Lautner S, Klingberg A, Koch G, El-Sherif F, Lehnhardt D, Zhang B, Burgert I, Odermatt J, Melzer S, Fromm J, Fladung M (2012) Influence of over-expression of the FLOWERING PROMOTING FACTOR 1 gene (FPF1) from Arabidopsis on wood formation in hybrid poplar (Populus tremula L. x P. tremuloides Michx.). Planta 235(1):359-373
