Phytochrome Overexpression and Cold Hardiness in Transgenic Populus. Junttila, O., Olsen, J. E., Nilsen, J., Martinussen, I., Moritz, T., Eriksson, M., Olsson, O., & Sandberg, G. In Li, P. H. & Chen, T. H. H., editors, Plant Cold Hardiness: Molecular Biology, Biochemistry, and Physiology, pages 245–255. Springer US, Boston, MA, 1997. ![Phytochrome Overexpression and Cold Hardiness in Transgenic Populus [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Photoperiodic effects on woody plants were reported already by Gardner and Allard in 1923 and comprehensive studies during the ’50s confirmed the role of photoperiod as an important environmental regulator of growth and growth cessation in many northern tree species (Nitsch, 1957; Wareing, 1956). In woody plants cessation of apical growth is a prerequisite for cold acclimation (Weiser, 1970) and photoperiod, as a factor controlling growth cessation, is therefore an important environmental signal for initiation of cold acclimation. In many cases a proper timing of acclimation and deacclimation, in respect to annual variation of temperature conditions, is more critical for winter survival than the maximum level of frost hardiness. Also in such coniferous species where cessation of apical growth is not controlled by photoperiod, short photoperiod is necessary for good cold acclimation, low temperature causes no or only a limited level of hardiness if combined with long day conditions (Schwarz, 1970; Aronsson, 1975; Christersson, 1978; Jonsson et al., 1981). Thus, photoperiod may have both an indirect, through induction of growth cessation, and a more direct influence on cold acclimation in woody plants.
@incollection{junttila_phytochrome_1997,
address = {Boston, MA},
title = {Phytochrome {Overexpression} and {Cold} {Hardiness} in {Transgenic} {Populus}},
isbn = {978-1-4899-0277-1},
url = {https://doi.org/10.1007/978-1-4899-0277-1_22},
abstract = {Photoperiodic effects on woody plants were reported already by Gardner and Allard in 1923 and comprehensive studies during the ’50s confirmed the role of photoperiod as an important environmental regulator of growth and growth cessation in many northern tree species (Nitsch, 1957; Wareing, 1956). In woody plants cessation of apical growth is a prerequisite for cold acclimation (Weiser, 1970) and photoperiod, as a factor controlling growth cessation, is therefore an important environmental signal for initiation of cold acclimation. In many cases a proper timing of acclimation and deacclimation, in respect to annual variation of temperature conditions, is more critical for winter survival than the maximum level of frost hardiness. Also in such coniferous species where cessation of apical growth is not controlled by photoperiod, short photoperiod is necessary for good cold acclimation, low temperature causes no or only a limited level of hardiness if combined with long day conditions (Schwarz, 1970; Aronsson, 1975; Christersson, 1978; Jonsson et al., 1981). Thus, photoperiod may have both an indirect, through induction of growth cessation, and a more direct influence on cold acclimation in woody plants.},
language = {en},
urldate = {2022-03-11},
booktitle = {Plant {Cold} {Hardiness}: {Molecular} {Biology}, {Biochemistry}, and {Physiology}},
publisher = {Springer US},
author = {Junttila, O. and Olsen, J. E. and Nilsen, J. and Martinussen, I. and Moritz, T. and Eriksson, M. and Olsson, O. and Sandberg, G.},
editor = {Li, Paul H. and Chen, Tony H. H.},
year = {1997},
doi = {10.1007/978-1-4899-0277-1_22},
keywords = {Cold Acclimation, Cold Hardiness, Growth Cessation, Photoperiodic Response, Short Photoperiod},
pages = {245--255},
}
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In woody plants cessation of apical growth is a prerequisite for cold acclimation (Weiser, 1970) and photoperiod, as a factor controlling growth cessation, is therefore an important environmental signal for initiation of cold acclimation. In many cases a proper timing of acclimation and deacclimation, in respect to annual variation of temperature conditions, is more critical for winter survival than the maximum level of frost hardiness. Also in such coniferous species where cessation of apical growth is not controlled by photoperiod, short photoperiod is necessary for good cold acclimation, low temperature causes no or only a limited level of hardiness if combined with long day conditions (Schwarz, 1970; Aronsson, 1975; Christersson, 1978; Jonsson et al., 1981). 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