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Statements

Subject Item
n2:RIV%2F61389030%3A_____%2F13%3A00396783%21RIV14-AV0-61389030
rdf:type
skos:Concept n14:Vysledek
dcterms:description
The effect of Potato virus Y (NTN) (PVY) infection upon photosynthesis was analysed in transgenic Pssu-ipt tobacco overproducing endogenous cytokinins in comparison with control, nontransgenic Nicotiana tabacum plants. The course of the infection from the early to the late stage was monitored by measuring of photosynthetic gas exchange and fast chlorophyll (Chl) a fluorescence induction kinetics. Leaf photosynthesis was also analysed using Chl fluorescence imaging (Chl-FI). From the different fluorescence parameters obtained using Chl-FI, the nonphotochemical quenching (NPQ) proved to be the most useful parameter to assess the effect of PVY infection. On the other hand, Chl-FI was found to be inapplicable for any presymptomatic detection of PVY infection in tobacco. The lower accumulation of the virus was found in transgenic plants and corresponded also with the presence of visible symptoms of PVY infection. The net photosynthetic rate (P (N)), transpiration rate (E), and stomatal conductance (g (s)) significantly decreased with the progress of the infection in both control plant types and transgenic rooted plants, while transgenic grafts were much less affected. The analysis of the Chl fluorescence transient revealed higher number of silent dissipative reaction centres, higher nonphotochemical dissipation, and significantly lower performance index, PI(abs), in the healthy transgenic grafts. Chl-FI also confirmed significantly higher NPQ in transgenic grafts. The effect of Potato virus Y (NTN) (PVY) infection upon photosynthesis was analysed in transgenic Pssu-ipt tobacco overproducing endogenous cytokinins in comparison with control, nontransgenic Nicotiana tabacum plants. The course of the infection from the early to the late stage was monitored by measuring of photosynthetic gas exchange and fast chlorophyll (Chl) a fluorescence induction kinetics. Leaf photosynthesis was also analysed using Chl fluorescence imaging (Chl-FI). From the different fluorescence parameters obtained using Chl-FI, the nonphotochemical quenching (NPQ) proved to be the most useful parameter to assess the effect of PVY infection. On the other hand, Chl-FI was found to be inapplicable for any presymptomatic detection of PVY infection in tobacco. The lower accumulation of the virus was found in transgenic plants and corresponded also with the presence of visible symptoms of PVY infection. The net photosynthetic rate (P (N)), transpiration rate (E), and stomatal conductance (g (s)) significantly decreased with the progress of the infection in both control plant types and transgenic rooted plants, while transgenic grafts were much less affected. The analysis of the Chl fluorescence transient revealed higher number of silent dissipative reaction centres, higher nonphotochemical dissipation, and significantly lower performance index, PI(abs), in the healthy transgenic grafts. Chl-FI also confirmed significantly higher NPQ in transgenic grafts.
dcterms:title
Chlorophyll a fluorescence as a tool for a study of the Potato virus Y effects on photosynthesis of nontransgenic and transgenic Pssu-ipt tobacco Chlorophyll a fluorescence as a tool for a study of the Potato virus Y effects on photosynthesis of nontransgenic and transgenic Pssu-ipt tobacco
skos:prefLabel
Chlorophyll a fluorescence as a tool for a study of the Potato virus Y effects on photosynthesis of nontransgenic and transgenic Pssu-ipt tobacco Chlorophyll a fluorescence as a tool for a study of the Potato virus Y effects on photosynthesis of nontransgenic and transgenic Pssu-ipt tobacco
skos:notation
RIV/61389030:_____/13:00396783!RIV14-AV0-61389030
n14:predkladatel
n15:ico%3A61389030
n3:aktivita
n19:Z
n3:aktivity
Z(AV0Z50380511)
n3:cisloPeriodika
2
n3:dodaniDat
n16:2014
n3:domaciTvurceVysledku
n13:3976475 n13:3229475 n13:1515950
n3:druhVysledku
n11:J
n3:duvernostUdaju
n18:S
n3:entitaPredkladatele
n6:predkladatel
n3:idSjednocenehoVysledku
65316
n3:idVysledku
RIV/61389030:_____/13:00396783
n3:jazykVysledku
n10:eng
n3:klicovaSlova
gas-exchange parameters; cytokinins; chlorophyll a fluorescence imaging
n3:klicoveSlovo
n4:chlorophyll%20a%20fluorescence%20imaging n4:gas-exchange%20parameters n4:cytokinins
n3:kodStatuVydavatele
CZ - Česká republika
n3:kontrolniKodProRIV
[DEE89B555B40]
n3:nazevZdroje
Photosynthetica
n3:obor
n17:EF
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
4
n3:rokUplatneniVysledku
n16:2013
n3:svazekPeriodika
51
n3:tvurceVysledku
Synková, Helena Spoustová, Petra Valcke, R. Čeřovská, Noemi
n3:wos
000318282600003
n3:zamer
n12:AV0Z50380511
s:issn
0300-3604
s:numberOfPages
11
n7:doi
10.1007/s11099-013-0023-4