About: Long-term effect of elevated CO2 on spatial differentiation of ribulose-1,5-bisphosphate carboxylase/oxygenase activity in Norway spruce canopy     Goto   Sponge   NotDistinct   Permalink

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Description
  • Total in vitro activity of RuBPCO (ribulose-1,5-bisphosphate carboxylase/oxygenase) enzyme was assayed spectrophotometrically by the continuous measurement of 3-phosphoglycerate-dependent NADH oxidation in a coupled enzyme system. RuBPCO activities were found in the ranges 1.01-2.76 and 1.23-3.10 mu mol(CO2) m(-2) s(-1) in current Norway spruce needles growing in ambient (AC) and elevated (EC) CO2 concentration, respectively. RuBPCO activity in AC needles from the upper layer (U) was 11-15 % higher compared to those from the middle (M) layer, and even 44-56 % higher compared to the lower (L) layer of spruce crown. Over the vegetation season, we observed a highly significant decrease of RuBPCO activity in the EC-U needles from 3.10 (July) to 1.60 (October) mu mol(CO2) m(-2) s(-1) as a consequence of downward feedback regulation. Moreover, this down-regulation was not caused by a non-specific decrease in total leaf nitrogen content.
  • Total in vitro activity of RuBPCO (ribulose-1,5-bisphosphate carboxylase/oxygenase) enzyme was assayed spectrophotometrically by the continuous measurement of 3-phosphoglycerate-dependent NADH oxidation in a coupled enzyme system. RuBPCO activities were found in the ranges 1.01-2.76 and 1.23-3.10 mu mol(CO2) m(-2) s(-1) in current Norway spruce needles growing in ambient (AC) and elevated (EC) CO2 concentration, respectively. RuBPCO activity in AC needles from the upper layer (U) was 11-15 % higher compared to those from the middle (M) layer, and even 44-56 % higher compared to the lower (L) layer of spruce crown. Over the vegetation season, we observed a highly significant decrease of RuBPCO activity in the EC-U needles from 3.10 (July) to 1.60 (October) mu mol(CO2) m(-2) s(-1) as a consequence of downward feedback regulation. Moreover, this down-regulation was not caused by a non-specific decrease in total leaf nitrogen content. (en)
  • V práci byl sledován vliv zvýšené koncentrace CO2 na prostorovou diferenciaci aktivity enzymu Rubisco v koruně smrku ztepilého v průběhu vegetační sezóny a vliv obsahu celkového dusíku. (cs)
Title
  • Long-term effect of elevated CO2 on spatial differentiation of ribulose-1,5-bisphosphate carboxylase/oxygenase activity in Norway spruce canopy
  • Vliv dlouhodobého působení zvýšené koncentrace CO2 na prostorovou diferenciaci aktivity enzymu Rubisco v koruně smrku ztepilého. (cs)
  • Long-term effect of elevated CO2 on spatial differentiation of ribulose-1,5-bisphosphate carboxylase/oxygenase activity in Norway spruce canopy (en)
skos:prefLabel
  • Long-term effect of elevated CO2 on spatial differentiation of ribulose-1,5-bisphosphate carboxylase/oxygenase activity in Norway spruce canopy
  • Vliv dlouhodobého působení zvýšené koncentrace CO2 na prostorovou diferenciaci aktivity enzymu Rubisco v koruně smrku ztepilého. (cs)
  • Long-term effect of elevated CO2 on spatial differentiation of ribulose-1,5-bisphosphate carboxylase/oxygenase activity in Norway spruce canopy (en)
skos:notation
  • RIV/60076658:12640/05:00008342!RIV09-MSM-12640___
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(LN00A141), P(OC E21.001), Z(AV0Z6087904), Z(MSM0021630502)
http://linked.open...iv/cisloPeriodika
  • 2
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 528410
http://linked.open...ai/riv/idVysledku
  • RIV/60076658:12640/05:00008342
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • down-regulation; nitrogen; photosynthesis; Picea abies; sun and shade needles; vertical profile (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • CZ - Česká republika
http://linked.open...ontrolniKodProRIV
  • [C2445A99B3FA]
http://linked.open...i/riv/nazevZdroje
  • Photosynthetica
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 43
http://linked.open...iv/tvurceVysledku
  • Urban, O.
  • Marek, Michal
  • Hrstka, M.
http://linked.open...ain/vavai/riv/wos
  • 000230717700006
http://linked.open...n/vavai/riv/zamer
issn
  • 0300-3604
number of pages
http://localhost/t...ganizacniJednotka
  • 12640
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