The boreal dwarf shrub Vaccinium vitis-idaea retains its capacity for photosynthesis through the winter

Research output: Contribution to journalArticleScientificpeer-review

Abstract

The ability to retain their photosynthetic capacity through the winter may be important for plants in boreal conditions, where the growing season is relatively short and winter temperatures fluctuate from severe freezing Lip to near 0 degrees C. The snow cover is an important protector for field-layer plants against both extreme freezing and excessive light. both of which could damage the photosynthetic apparatus. To understand the importance of wintertime photosynthetic activity for cvergreen boreal dwarf shrubs, the photosynthesis of Vaccinium vitis-idaea L. was monitored in field conditions for one year. A dynamic model was used to determine the relative effect of temperature oil the photosynthetic capacity. Our results show that V. vitis-idaea retains its photosynthetic capacity throughout the winter: its average photosynthetic capacity in winter was almost 25% of the yearly maximum measured. Changes in photosynthetic capacity over the year reflect the changes in air temperature with a certain delay. except in summer. Concentrations of soluble sugars remained high during the winter months, probably as a consequence of CO2 uptake under the snow cover. Our measurements indicated no significant damage to the leaf tissue over the winter, but suggest that photoinhibition may occur immediately after snowmelt..
Original languageEnglish
JournalBotany
Volume86
Issue number5
Pages (from-to)491-500
Number of pages10
ISSN1916-2790
DOIs
Publication statusPublished - 2008
MoE publication typeA1 Journal article-refereed

Cite this

@article{d6b06778301c4dbcbb7d71ef736a7ac6,
title = "The boreal dwarf shrub Vaccinium vitis-idaea retains its capacity for photosynthesis through the winter",
abstract = "The ability to retain their photosynthetic capacity through the winter may be important for plants in boreal conditions, where the growing season is relatively short and winter temperatures fluctuate from severe freezing Lip to near 0 degrees C. The snow cover is an important protector for field-layer plants against both extreme freezing and excessive light. both of which could damage the photosynthetic apparatus. To understand the importance of wintertime photosynthetic activity for cvergreen boreal dwarf shrubs, the photosynthesis of Vaccinium vitis-idaea L. was monitored in field conditions for one year. A dynamic model was used to determine the relative effect of temperature oil the photosynthetic capacity. Our results show that V. vitis-idaea retains its photosynthetic capacity throughout the winter: its average photosynthetic capacity in winter was almost 25{\%} of the yearly maximum measured. Changes in photosynthetic capacity over the year reflect the changes in air temperature with a certain delay. except in summer. Concentrations of soluble sugars remained high during the winter months, probably as a consequence of CO2 uptake under the snow cover. Our measurements indicated no significant damage to the leaf tissue over the winter, but suggest that photoinhibition may occur immediately after snowmelt..",
author = "Robin Lundell and Timo Saarinen and Helena {\AA}str{\"o}m and Heikki H{\"a}nninen",
year = "2008",
doi = "10.1139/B08-022",
language = "English",
volume = "86",
pages = "491--500",
journal = "Botany",
issn = "1916-2790",
publisher = "NRC RESEARCH PRESS",
number = "5",

}

The boreal dwarf shrub Vaccinium vitis-idaea retains its capacity for photosynthesis through the winter. / Lundell, Robin; Saarinen, Timo; Åström, Helena; Hänninen, Heikki.

In: Botany, Vol. 86, No. 5, 2008, p. 491-500.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - The boreal dwarf shrub Vaccinium vitis-idaea retains its capacity for photosynthesis through the winter

AU - Lundell, Robin

AU - Saarinen, Timo

AU - Åström, Helena

AU - Hänninen, Heikki

PY - 2008

Y1 - 2008

N2 - The ability to retain their photosynthetic capacity through the winter may be important for plants in boreal conditions, where the growing season is relatively short and winter temperatures fluctuate from severe freezing Lip to near 0 degrees C. The snow cover is an important protector for field-layer plants against both extreme freezing and excessive light. both of which could damage the photosynthetic apparatus. To understand the importance of wintertime photosynthetic activity for cvergreen boreal dwarf shrubs, the photosynthesis of Vaccinium vitis-idaea L. was monitored in field conditions for one year. A dynamic model was used to determine the relative effect of temperature oil the photosynthetic capacity. Our results show that V. vitis-idaea retains its photosynthetic capacity throughout the winter: its average photosynthetic capacity in winter was almost 25% of the yearly maximum measured. Changes in photosynthetic capacity over the year reflect the changes in air temperature with a certain delay. except in summer. Concentrations of soluble sugars remained high during the winter months, probably as a consequence of CO2 uptake under the snow cover. Our measurements indicated no significant damage to the leaf tissue over the winter, but suggest that photoinhibition may occur immediately after snowmelt..

AB - The ability to retain their photosynthetic capacity through the winter may be important for plants in boreal conditions, where the growing season is relatively short and winter temperatures fluctuate from severe freezing Lip to near 0 degrees C. The snow cover is an important protector for field-layer plants against both extreme freezing and excessive light. both of which could damage the photosynthetic apparatus. To understand the importance of wintertime photosynthetic activity for cvergreen boreal dwarf shrubs, the photosynthesis of Vaccinium vitis-idaea L. was monitored in field conditions for one year. A dynamic model was used to determine the relative effect of temperature oil the photosynthetic capacity. Our results show that V. vitis-idaea retains its photosynthetic capacity throughout the winter: its average photosynthetic capacity in winter was almost 25% of the yearly maximum measured. Changes in photosynthetic capacity over the year reflect the changes in air temperature with a certain delay. except in summer. Concentrations of soluble sugars remained high during the winter months, probably as a consequence of CO2 uptake under the snow cover. Our measurements indicated no significant damage to the leaf tissue over the winter, but suggest that photoinhibition may occur immediately after snowmelt..

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SN - 1916-2790

IS - 5

ER -