Soil temperature, gas exchange and nitrogen status of 5-year-old Norway spruce seedlings

M. Lahti, P. J. Aphalo, L. Finér, T. Lehto, I. Leinonen, H. Mannerkoski, A. Ryyppö

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Five-year-old Norway spruce (Picea abies (L.) Karst.) seedlings were subjected to three simulated growing seasons in controlled environment chambers. Plants were acclimated to a soil temperature of 16 degreesC during the first and third growing seasons, but were allocated at random to soil temperature treatments of 9, 13, 18 and 21 degreesC during the second growing season. Low soil temperature during the second growing season depressed stomatal conductance and photosynthetic rate (A) per unit of projected leaf area, although intercellular CO2 concentrations did not differ significantly between treatments. At all soil temperatures, total chlorophyll concentration first decreased and then increased, although the rate of increase and the final concentration increased with soil temperature, which may explain the effect of soil temperature on A. Neither chlorophyll a/b ratio nor leaf nitrogen concentration was significantly affected by soil temperature. Treatment differences disappeared during the third simulated growing season when plants were again acclimated to a soil temperature of 16 degreesC.
Original languageEnglish
Pages (from-to)1311-1316
Number of pages6
JournalTree Physiology
Volume22
Issue number18
DOIs
Publication statusPrint publication - 2002
Externally publishedYes

Fingerprint

Picea abies
soil temperature
gas exchange
seedlings
nitrogen
growing season
chlorophyll
karsts
stomatal conductance
leaf area
leaves

Keywords

  • Chlorophyll a/b ratio
  • Chlorophyll concentration
  • Internal carbon dioxide concentration
  • Nitrogen concentration
  • Photosynthetic CO2 assimilation rate
  • Picea abies
  • Stomatal conductance
  • Transpiration rate

Cite this

Lahti, M., Aphalo, P. J., Finér, L., Lehto, T., Leinonen, I., Mannerkoski, H., & Ryyppö, A. (2002). Soil temperature, gas exchange and nitrogen status of 5-year-old Norway spruce seedlings. Tree Physiology, 22(18), 1311-1316. https://doi.org/10.1093/treephys/22.18.1311
Lahti, M. ; Aphalo, P. J. ; Finér, L. ; Lehto, T. ; Leinonen, I. ; Mannerkoski, H. ; Ryyppö, A. / Soil temperature, gas exchange and nitrogen status of 5-year-old Norway spruce seedlings. In: Tree Physiology. 2002 ; Vol. 22, No. 18. pp. 1311-1316.
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Lahti, M, Aphalo, PJ, Finér, L, Lehto, T, Leinonen, I, Mannerkoski, H & Ryyppö, A 2002, 'Soil temperature, gas exchange and nitrogen status of 5-year-old Norway spruce seedlings', Tree Physiology, vol. 22, no. 18, pp. 1311-1316. https://doi.org/10.1093/treephys/22.18.1311

Soil temperature, gas exchange and nitrogen status of 5-year-old Norway spruce seedlings. / Lahti, M.; Aphalo, P. J.; Finér, L.; Lehto, T.; Leinonen, I.; Mannerkoski, H.; Ryyppö, A.

In: Tree Physiology, Vol. 22, No. 18, 2002, p. 1311-1316.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Soil temperature, gas exchange and nitrogen status of 5-year-old Norway spruce seedlings

AU - Lahti, M.

AU - Aphalo, P. J.

AU - Finér, L.

AU - Lehto, T.

AU - Leinonen, I.

AU - Mannerkoski, H.

AU - Ryyppö, A.

PY - 2002

Y1 - 2002

N2 - Five-year-old Norway spruce (Picea abies (L.) Karst.) seedlings were subjected to three simulated growing seasons in controlled environment chambers. Plants were acclimated to a soil temperature of 16 degreesC during the first and third growing seasons, but were allocated at random to soil temperature treatments of 9, 13, 18 and 21 degreesC during the second growing season. Low soil temperature during the second growing season depressed stomatal conductance and photosynthetic rate (A) per unit of projected leaf area, although intercellular CO2 concentrations did not differ significantly between treatments. At all soil temperatures, total chlorophyll concentration first decreased and then increased, although the rate of increase and the final concentration increased with soil temperature, which may explain the effect of soil temperature on A. Neither chlorophyll a/b ratio nor leaf nitrogen concentration was significantly affected by soil temperature. Treatment differences disappeared during the third simulated growing season when plants were again acclimated to a soil temperature of 16 degreesC.

AB - Five-year-old Norway spruce (Picea abies (L.) Karst.) seedlings were subjected to three simulated growing seasons in controlled environment chambers. Plants were acclimated to a soil temperature of 16 degreesC during the first and third growing seasons, but were allocated at random to soil temperature treatments of 9, 13, 18 and 21 degreesC during the second growing season. Low soil temperature during the second growing season depressed stomatal conductance and photosynthetic rate (A) per unit of projected leaf area, although intercellular CO2 concentrations did not differ significantly between treatments. At all soil temperatures, total chlorophyll concentration first decreased and then increased, although the rate of increase and the final concentration increased with soil temperature, which may explain the effect of soil temperature on A. Neither chlorophyll a/b ratio nor leaf nitrogen concentration was significantly affected by soil temperature. Treatment differences disappeared during the third simulated growing season when plants were again acclimated to a soil temperature of 16 degreesC.

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KW - Chlorophyll concentration

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KW - Nitrogen concentration

KW - Photosynthetic CO2 assimilation rate

KW - Picea abies

KW - Stomatal conductance

KW - Transpiration rate

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U2 - 10.1093/treephys/22.18.1311

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