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Statements

Subject Item
n2:RIV%2F62156489%3A43210%2F13%3A00218796%21RIV15-MSM-43210___
rdf:type
n16:Vysledek skos:Concept
dcterms:description
Accumulation of secondary metabolites (general phenols, naphthodianthrones and phloroglucinol hyperforin) in Hypericum perforatum and Hypericum canariense after application of the inhibitor (2-aminoindane-2-phosphonic acid, AIP) of the pivotal enzyme of general phenylpropanoid pathway (phenylalanine ammonia-lyase, PAL) was studied. Shoots of H. perforatum revealed more expressive growth depression, concomitantly with the inhibition of PAL activity (-60%) and decrease in soluble phenols and individual phenolic acids in response to AIP. Hypericins (hypericin, pseudohypericin and protohypericin) decreased while hyperforin increased in AIP-cultured H. perforatum. On the contrary, growth changes, decreases in soluble phenols and individual phenolic acids were less-visible in H. canariense. This was also reflected in restoration of PAL activity (+330%) and selected flavonoids even increased. Hypericins and hyperforin were present in several orders of magnitude lower amounts in comparison with H. perforatum. Increase in proline indicates potential compensatory antioxidative mechanism if phenols are depleted. Microscopy revealed also differences in secondary xylem formation and lignification between species after exposure to AIP. (c) 2012 Elsevier Masson SAS. All rights reserved. Accumulation of secondary metabolites (general phenols, naphthodianthrones and phloroglucinol hyperforin) in Hypericum perforatum and Hypericum canariense after application of the inhibitor (2-aminoindane-2-phosphonic acid, AIP) of the pivotal enzyme of general phenylpropanoid pathway (phenylalanine ammonia-lyase, PAL) was studied. Shoots of H. perforatum revealed more expressive growth depression, concomitantly with the inhibition of PAL activity (-60%) and decrease in soluble phenols and individual phenolic acids in response to AIP. Hypericins (hypericin, pseudohypericin and protohypericin) decreased while hyperforin increased in AIP-cultured H. perforatum. On the contrary, growth changes, decreases in soluble phenols and individual phenolic acids were less-visible in H. canariense. This was also reflected in restoration of PAL activity (+330%) and selected flavonoids even increased. Hypericins and hyperforin were present in several orders of magnitude lower amounts in comparison with H. perforatum. Increase in proline indicates potential compensatory antioxidative mechanism if phenols are depleted. Microscopy revealed also differences in secondary xylem formation and lignification between species after exposure to AIP. (c) 2012 Elsevier Masson SAS. All rights reserved.
dcterms:title
PAL inhibitor evokes different responses in two Hypericum species PAL inhibitor evokes different responses in two Hypericum species
skos:prefLabel
PAL inhibitor evokes different responses in two Hypericum species PAL inhibitor evokes different responses in two Hypericum species
skos:notation
RIV/62156489:43210/13:00218796!RIV15-MSM-43210___
n4:aktivita
n15:P n15:I
n4:aktivity
I, P(EE2.3.30.0017)
n4:cisloPeriodika
February 2013
n4:dodaniDat
n7:2015
n4:domaciTvurceVysledku
n11:7498535 n11:8683913
n4:druhVysledku
n14:J
n4:duvernostUdaju
n10:S
n4:entitaPredkladatele
n13:predkladatel
n4:idSjednocenehoVysledku
95149
n4:idVysledku
RIV/62156489:43210/13:00218796
n4:jazykVysledku
n18:eng
n4:klicovaSlova
phenolic metabolism; chlorogenic acid; flavonols; lignin; free amino acids
n4:klicoveSlovo
n6:phenolic%20metabolism n6:chlorogenic%20acid n6:lignin n6:flavonols n6:free%20amino%20acids
n4:kodStatuVydavatele
FR - Francouzská republika
n4:kontrolniKodProRIV
[559607689A8F]
n4:nazevZdroje
Plant Physiology and Biochemistry
n4:obor
n5:EF
n4:pocetDomacichTvurcuVysledku
2
n4:pocetTvurcuVysledku
3
n4:projekt
n17:EE2.3.30.0017
n4:rokUplatneniVysledku
n7:2013
n4:svazekPeriodika
63
n4:tvurceVysledku
Babula, Petr Kováčik, Jozef Klejdus, Bořivoj
n4:wos
315011400011
s:issn
0981-9428
s:numberOfPages
7
n19:doi
10.1016/j.plaphy.2012.11.019
n12:organizacniJednotka
43210