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Statements

Subject Item
n2:RIV%2F00216208%3A11310%2F14%3A10218326%21RIV15-MSM-11310___
rdf:type
n18:Vysledek skos:Concept
rdfs:seeAlso
http://www.sciencedirect.com/science/article/pii/S0039128X14000774
dcterms:description
The aim of the work was to examine the effect of brassinosteroid (24-epibrassinolide; 24E) and ecdysteroid (20-hydroxyecdysone; 20E) on various parts of primary photosynthetic processes in maize and spinach. Additionally, the effect of steroids on gaseous exchange, pigment content and biomass accumulation was studied. The efficiency of the photosynthetic whole electron-transport chain responded negatively to the 24E or 20E treatment in both species, but there were interspecific differences regarding Photosystem (PS) II response. A positive effect on its oxygen-evolving complex and a slightly better energetical connectivity between PSII units were observed in maize whereas the opposite was true for spinach. The size of the pool of the PSI end electron acceptors was usually diminished due to 24E or 20E treatment. The treatment of plants with 24E or 20E applied individually positively influenced the content of photosynthetic pigments in maize (not in spinach). On the other hand, it did not affect gaseous exchange in maize but resulted in its reduction in spinach. Plants treated with combination of both steroids mostly did not significantly differ from the control plants. We have demonstrated for the first time that 20E applied in low (10 nM) concentration can affect various parts of photosynthetic processes similarly to 24E and that brassinosteroids regulate not only PSII but also other parts of the photosynthetic electron transport chain - but not necessarily in the same way. The aim of the work was to examine the effect of brassinosteroid (24-epibrassinolide; 24E) and ecdysteroid (20-hydroxyecdysone; 20E) on various parts of primary photosynthetic processes in maize and spinach. Additionally, the effect of steroids on gaseous exchange, pigment content and biomass accumulation was studied. The efficiency of the photosynthetic whole electron-transport chain responded negatively to the 24E or 20E treatment in both species, but there were interspecific differences regarding Photosystem (PS) II response. A positive effect on its oxygen-evolving complex and a slightly better energetical connectivity between PSII units were observed in maize whereas the opposite was true for spinach. The size of the pool of the PSI end electron acceptors was usually diminished due to 24E or 20E treatment. The treatment of plants with 24E or 20E applied individually positively influenced the content of photosynthetic pigments in maize (not in spinach). On the other hand, it did not affect gaseous exchange in maize but resulted in its reduction in spinach. Plants treated with combination of both steroids mostly did not significantly differ from the control plants. We have demonstrated for the first time that 20E applied in low (10 nM) concentration can affect various parts of photosynthetic processes similarly to 24E and that brassinosteroids regulate not only PSII but also other parts of the photosynthetic electron transport chain - but not necessarily in the same way.
dcterms:title
24-Epibrassinolide and 20-hydroxyecdysone affect photosynthesis differently in maize and spinach 24-Epibrassinolide and 20-hydroxyecdysone affect photosynthesis differently in maize and spinach
skos:prefLabel
24-Epibrassinolide and 20-hydroxyecdysone affect photosynthesis differently in maize and spinach 24-Epibrassinolide and 20-hydroxyecdysone affect photosynthesis differently in maize and spinach
skos:notation
RIV/00216208:11310/14:10218326!RIV15-MSM-11310___
n3:aktivita
n7:I n7:S n7:P n7:Z
n3:aktivity
I, P(GAP501/11/1650), S, Z(MSM0021620858)
n3:cisloPeriodika
JUL 2014
n3:dodaniDat
n10:2015
n3:domaciTvurceVysledku
n4:2363968 n4:1584839 n4:7876408 n4:6963781
n3:druhVysledku
n9:J
n3:duvernostUdaju
n14:S
n3:entitaPredkladatele
n13:predkladatel
n3:idSjednocenehoVysledku
58182
n3:idVysledku
RIV/00216208:11310/14:10218326
n3:jazykVysledku
n21:eng
n3:klicovaSlova
Photosynthetic electron transport; OJIP analysis; Gas exchange; Chlorophyll; Brassinosteroids; Ecdysteroids
n3:klicoveSlovo
n17:Gas%20exchange n17:Chlorophyll n17:OJIP%20analysis n17:Photosynthetic%20electron%20transport n17:Brassinosteroids n17:Ecdysteroids
n3:kodStatuVydavatele
US - Spojené státy americké
n3:kontrolniKodProRIV
[BC6687C3F651]
n3:nazevZdroje
Steroids
n3:obor
n20:ED
n3:pocetDomacichTvurcuVysledku
4
n3:pocetTvurcuVysledku
8
n3:projekt
n15:GAP501%2F11%2F1650
n3:rokUplatneniVysledku
n10:2014
n3:svazekPeriodika
85
n3:tvurceVysledku
Kamlar, Marek Tůmová, Lenka Hniličková, Helena Rothová, Olga Kočová, Marie Hnilička, František Holá, Dana Macek, Tomáš
n3:wos
000337652700007
n3:zamer
n6:MSM0021620858
s:issn
0039-128X
s:numberOfPages
14
n8:doi
10.1016/j.steroids.2014.04.006
n19:organizacniJednotka
11310