Effect of season, needle age and elevated CO2 concentration on photosynthesis and Rubisco acclimation in Picea abies

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F12%3APU99421" target="_blank" >RIV/00216305:26310/12:PU99421 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67179843:_____/12:00379292

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Effect of season, needle age and elevated CO2 concentration on photosynthesis and Rubisco acclimation in Picea abies

Popis výsledku v původním jazyce

We comprehensively studied Rubisco adjustment to EC in coniferous Picea abies using an electrophoretic (protein content), spectrophotometric (initial (RAinitial) and total (RAtotal) in vitro Rubisco activities), and gas-exchange (maximum carboxylation activity in vivo (VCmax)) techniques. With respect to differing carbon sink strength and nitrogen remobilization, we hypothesized greater acclimation of photosynthesis in one-year-old as compared to current-year needles and at the end than at the beginningof the vegetation season. EC treatment led to a decrease in VCmax values in current-year needles, but the ribulose1,5-bis- phosphate (RuBP)-limited rate of photosynthesis (Jmax) remained unaffected. Indeed, both VCmax and Jmax were reduced by the EC treatment in one-year-old needles. The extent of photosynthetic acclimation in EC plants did not increase, however, during the vegetation season. EC decreased the activation state of Rubisco (RAinitial/RAtotal) by 16% and 5% in current-year

Název v anglickém jazyce

Effect of season, needle age and elevated CO2 concentration on photosynthesis and Rubisco acclimation in Picea abies

Popis výsledku anglicky

We comprehensively studied Rubisco adjustment to EC in coniferous Picea abies using an electrophoretic (protein content), spectrophotometric (initial (RAinitial) and total (RAtotal) in vitro Rubisco activities), and gas-exchange (maximum carboxylation activity in vivo (VCmax)) techniques. With respect to differing carbon sink strength and nitrogen remobilization, we hypothesized greater acclimation of photosynthesis in one-year-old as compared to current-year needles and at the end than at the beginningof the vegetation season. EC treatment led to a decrease in VCmax values in current-year needles, but the ribulose1,5-bis- phosphate (RuBP)-limited rate of photosynthesis (Jmax) remained unaffected. Indeed, both VCmax and Jmax were reduced by the EC treatment in one-year-old needles. The extent of photosynthetic acclimation in EC plants did not increase, however, during the vegetation season. EC decreased the activation state of Rubisco (RAinitial/RAtotal) by 16% and 5% in current-year

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CE - Biochemie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2012

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

PLANT PHYSIOLOGY AND BIOCHEMISTRY

ISSN

0981-9428

e-ISSN

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Svazek periodika

58

Číslo periodika v rámci svazku

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Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

7

Strana od-do

135-141

Kód UT WoS článku

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EID výsledku v databázi Scopus

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