| Attributes | Values |
|---|
| rdf:type
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| Description
| - Tepelný stres způsobuje inhibici fotosyntetické asimilace CO2. Sledovali jsme aktivitu alternativních drah redukce plastochinonového poolu během tepleného stresu listů ječmene v oblasti teplot 24-46C. Zjistili jsme, že současně s poklesem aktivity Fotosystému II dochází k aktivaci alternativních drah redukce plastochinonového poolu a teprve poté k poklesu fotosyntetické asimilace CO2. (cs)
- Heat stress causes inhibition of photosynthetic CO2 assimilation, affects light photosynthetic reactions and accelerates alternative pathways of plastoquinone pool reduction (APPR). We have studied all these heat-sensitive processes after preheating to a broad range of physiological temperatures (24-46 degrees C) to explore a role of these alternative pathways during heat stress. Primarily, the effective quantum yield of PSII photochemistry was reduced (at 40 degrees C). This PSII downregulation was accompanied by the stimulation of APPR and preceded reduction of photosynthetic CO2 assimilation by 2 degrees; it occurred after preheating at 42 degrees C because of inhibition in Rubisco (ribulose 1,5-bisphosphate carboxylase/oxygenase) activation process. Thus, we suggest that the heat-induced stimulation of APPR is not associated with the heat-induced inhibition of Calvin cycle as it was reported for other types of stresses. A possible role of APPR in the compensation of PSII downregulation is briefly
- Heat stress causes inhibition of photosynthetic CO2 assimilation, affects light photosynthetic reactions and accelerates alternative pathways of plastoquinone pool reduction (APPR). We have studied all these heat-sensitive processes after preheating to a broad range of physiological temperatures (24-46 degrees C) to explore a role of these alternative pathways during heat stress. Primarily, the effective quantum yield of PSII photochemistry was reduced (at 40 degrees C). This PSII downregulation was accompanied by the stimulation of APPR and preceded reduction of photosynthetic CO2 assimilation by 2 degrees; it occurred after preheating at 42 degrees C because of inhibition in Rubisco (ribulose 1,5-bisphosphate carboxylase/oxygenase) activation process. Thus, we suggest that the heat-induced stimulation of APPR is not associated with the heat-induced inhibition of Calvin cycle as it was reported for other types of stresses. A possible role of APPR in the compensation of PSII downregulation is briefly (en)
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| Title
| - Acceleration of plastoquinone pool reduction by alternative pathways precedens a decrease in photosynthetic CO2 assimilation in preheated barely leaves
- Zrychlení redukce plastochinonového poolu z alternativních drah předchází poklesu fotosyntetické asimilace CO2 u tepelně stresovaných listů ječmene. (cs)
- Acceleration of plastoquinone pool reduction by alternative pathways precedens a decrease in photosynthetic CO2 assimilation in preheated barely leaves (en)
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| skos:prefLabel
| - Acceleration of plastoquinone pool reduction by alternative pathways precedens a decrease in photosynthetic CO2 assimilation in preheated barely leaves
- Zrychlení redukce plastochinonového poolu z alternativních drah předchází poklesu fotosyntetické asimilace CO2 u tepelně stresovaných listů ječmene. (cs)
- Acceleration of plastoquinone pool reduction by alternative pathways precedens a decrease in photosynthetic CO2 assimilation in preheated barely leaves (en)
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| skos:notation
| - RIV/60076658:12640/08:00009347!RIV09-MSM-12640___
|
| http://linked.open...avai/riv/aktivita
| |
| http://linked.open...avai/riv/aktivity
| - P(GA206/05/0335), Z(AV0Z50200510), Z(MSM6007665808)
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| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
| |
| http://linked.open...ai/riv/idVysledku
| - RIV/60076658:12640/08:00009347
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| http://linked.open...riv/jazykVysledku
| |
| http://linked.open.../riv/klicovaSlova
| - cyclic electron flow; induced absorbency changes; fluorescence temperature curve; NADH-dehydrogenase complex; moderate heat-stress; high light-intensity; photosystem-II; chlorophyll fluorescence; ribulose-1,5-bisphosphate carboxylase/oxygenase; leaf temperature (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...odStatuVydavatele
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
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| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
| |
| http://linked.open...UplatneniVysledku
| |
| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Kaňa, Radek
- Kotabová, Eva
- Prášil, Ondřej
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| http://linked.open...ain/vavai/riv/wos
| |
| http://linked.open...n/vavai/riv/zamer
| |
| issn
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| number of pages
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| http://localhost/t...ganizacniJednotka
| |
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