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  • Rostliny ve spodních patrech porostu jsou vystaveny jak nízkému difúznímu světlu tak světelným „skvrnám“, které jsou charakterizovány vysokou ozářeností po dobu několika sekund až minut. Fotosyntetická odpověď na měnící se ozářenost je závislá hlavně na: 1) indukční odpovědi na nárůst světla, 2) schopnosti udržet indukční rychlost asimilace i při nízkém světle, to umožňuje rostlinám využít lépe další světelnou skvrnu, 3) reakci průduchů na danou intenzitu světla, 4) schopnosti udržet fotosyntetickou aktivitu v temnotní fázi bezprostředně po vysoké intenzitě světla, tzn. na post-iluminační fixaci CO2. Sledovali jsme vliv oscilujícího záření s různě dlouhými periodami na aktivaci a deaktivaci asimilačních procesů a efektivitu využití světla během světelných skvrn. (cs)
  • Plants growing in the forest understorey are subjected to both prolonged low diffuse background light and transient lightflecks, which provide high light intensities for a few seconds or minutes.The photosynthetic response to fluctuating irradiances is dependent on the following main features of: 1) photosynthetic induction response to a rise in the irradiance, 2) ability to maintain photosynthetic induction under low-light conditions, which allows a plant to better exploit the next lightfleck, 3) stomatal response to light intensity, and 4) ability to extend the photosynthetic activity into the shade period immediately following a pulse of high light, i.e. post-illumination CO2 fixation. In this study we determined the impact of oscillating irradiance with different times of period on the activation and deactivation of CO2 assimilation processes and light use efficiency during the lightflecks.
  • Plants growing in the forest understorey are subjected to both prolonged low diffuse background light and transient lightflecks, which provide high light intensities for a few seconds or minutes.The photosynthetic response to fluctuating irradiances is dependent on the following main features of: 1) photosynthetic induction response to a rise in the irradiance, 2) ability to maintain photosynthetic induction under low-light conditions, which allows a plant to better exploit the next lightfleck, 3) stomatal response to light intensity, and 4) ability to extend the photosynthetic activity into the shade period immediately following a pulse of high light, i.e. post-illumination CO2 fixation. In this study we determined the impact of oscillating irradiance with different times of period on the activation and deactivation of CO2 assimilation processes and light use efficiency during the lightflecks. (en)
Title
  • Sequences of short lightflecks are more efficient in the photosynthetic induction
  • Sequences of short lightflecks are more efficient in the photosynthetic induction (en)
  • Krátké periody světelných skvrn jsou při indukci fotosyntézy u smrku ztepilého účinnější (cs)
skos:prefLabel
  • Sequences of short lightflecks are more efficient in the photosynthetic induction
  • Sequences of short lightflecks are more efficient in the photosynthetic induction (en)
  • Krátké periody světelných skvrn jsou při indukci fotosyntézy u smrku ztepilého účinnější (cs)
skos:notation
  • RIV/67179843:_____/05:00023139!RIV06-GA0-67179843
http://linked.open.../vavai/riv/strany
  • 55;55
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GP522/05/P515)
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
  • 542385
http://linked.open...ai/riv/idVysledku
  • RIV/67179843:_____/05:00023139
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • induction of CO2 assimilation; lightflecks utilization; Norway spruce (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...ontrolniKodProRIV
  • [497A2D4CBE21]
http://linked.open...v/mistoKonaniAkce
  • Brno
http://linked.open...i/riv/mistoVydani
  • Brno
http://linked.open...i/riv/nazevZdroje
  • Photosynthesis and stress: Biophysical and biochemical methods in photosynthesis research Central-European conference
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...iv/tvurceVysledku
  • Urban, Otmar
  • Košvancová, Martina
http://linked.open...vavai/riv/typAkce
http://linked.open.../riv/zahajeniAkce
number of pages
http://purl.org/ne...btex#hasPublisher
  • Masarykova univerzita v Brně
https://schema.org/isbn
  • 80-210-3762-8
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