J
Jorunn E. Olsen
Researcher at Norwegian University of Life Sciences
Publications - 74
Citations - 2779
Jorunn E. Olsen is an academic researcher from Norwegian University of Life Sciences. The author has contributed to research in topics: Salix pentandra & Gibberellin. The author has an hindex of 26, co-authored 72 publications receiving 2438 citations. Previous affiliations of Jorunn E. Olsen include Swedish University of Agricultural Sciences & University of Tromsø.
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Journal ArticleDOI
Ectopic expression of oat phytochrome A in hybrid aspen changes critical daylength for growth and prevents cold acclimatization
Jorunn E. Olsen,Olavi Junttila,Jarle Nilsen,Maria E. Eriksson,Inger Martinussen,Olof Olsson,Göran Sandberg,Thomas Moritz +7 more
TL;DR: This report shows for the first time that over-expression of the oat phytochrome A gene (PHYA) in a tree significantly changes the critical daylength and effectively prevents cold acclimatization, and indicates that photoperiodic responses in trees might be regulated by the amount of PHYA gene expressed in the plants, and that the amounts of phy tochrome A (phyA) affects the metabolism of GAs and IAA.
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Hormonal regulation of temperature‐induced growth in Arabidopsis
Jon Anders Stavang,Javier Gallego-Bartolomé,María Dolores Gómez,Shigeo Yoshida,Tadao Asami,Jorunn E. Olsen,José L. García-Martínez,David Alabadí,Miguel A. Blázquez +8 more
TL;DR: The results suggest that temperature regulates hypocotyl growth by individually impinging on several elements of a pre-existing network of signaling pathways involving auxin, BRs, GAs, and PIF4.
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Light and temperature sensing and signaling in induction of bud dormancy in woody plants
TL;DR: In woody species cycling between growth and dormancy must be precisely synchronized with the seasonal climatic variations, and different FT-genes appear to have opposite effects in photoperiodic control of shoot elongation.
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High relative air humidity and continuous light reduce stomata functionality by affecting the ABA regulation in rose leaves
TL;DR: The results provide new insight into the regulation of ABA under different humidities and photoperiods, and clearly show that β-glucosidase is a key enzyme regulating the ABA pool in rose plants.
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A high proportion of blue light increases the photosynthesis capacity and leaf formation rate of Rosa × hybrida but does not affect time to flower opening.
TL;DR: It is shown that a higher portion of B light is efficient in increasing photosynthesis performance per unit leaf area, enhancing growth and morphological changes in roses but does not affect the total Dry Matter (DM) production or time to open flower.