About: Comparison of hormonal responses to heat, drought and combined stress in tobacco plants with elevated proline content

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About: Comparison of hormonal responses to heat, drought and combined stress in tobacco plants with elevated proline content Goto Sponge NotDistinct Permalink

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Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://dx.doi.org/10.1016/j.jplph.2010.05.013
Description	Heat stress (40oC) caused a transient increase in the level of bioactive cytokinins (CK), accompanied by down-regulation of the activity of cytokinin oxidase/dehydrogenase (CKX, EC 1.4.3.18/1.5.99.12) in tobacco plants constitutively over-expressing a gene for the proline (Pro) biosynthetic enzyme INCREMENT 2-pyrroline-5-carboxylate synthetase (P5CSF129A; EC 2.7.2.11/1.2.1.41) as well as the wild-type. Concomitantly, a transient decrease of abscisic acid was observed. Following drought stress, bioactive CK levels decreased (to lower extent in upper leaves and in roots), more in the wild-type. Exposure to heat stress (40oC for 2 h) at the end of 10-d drought period was associated with stimulation of the activity of CKX in upper leaves and roots, coinciding with down-regulation of bioactive CKs in whole plants. All stresses were associated with elevation of free auxin, indolylacetic acid, in lower leaves and/or in roots. After rehydration, vast elevation of bioactive CKs in leaves was observed. Heat stress (40oC) caused a transient increase in the level of bioactive cytokinins (CK), accompanied by down-regulation of the activity of cytokinin oxidase/dehydrogenase (CKX, EC 1.4.3.18/1.5.99.12) in tobacco plants constitutively over-expressing a gene for the proline (Pro) biosynthetic enzyme INCREMENT 2-pyrroline-5-carboxylate synthetase (P5CSF129A; EC 2.7.2.11/1.2.1.41) as well as the wild-type. Concomitantly, a transient decrease of abscisic acid was observed. Following drought stress, bioactive CK levels decreased (to lower extent in upper leaves and in roots), more in the wild-type. Exposure to heat stress (40oC for 2 h) at the end of 10-d drought period was associated with stimulation of the activity of CKX in upper leaves and roots, coinciding with down-regulation of bioactive CKs in whole plants. All stresses were associated with elevation of free auxin, indolylacetic acid, in lower leaves and/or in roots. After rehydration, vast elevation of bioactive CKs in leaves was observed. (en)
Title	Comparison of hormonal responses to heat, drought and combined stress in tobacco plants with elevated proline content Comparison of hormonal responses to heat, drought and combined stress in tobacco plants with elevated proline content (en)
skos:prefLabel	Comparison of hormonal responses to heat, drought and combined stress in tobacco plants with elevated proline content Comparison of hormonal responses to heat, drought and combined stress in tobacco plants with elevated proline content (en)
skos:notation	RIV/00216208:11310/10:10109427!RIV12-MSM-11310___
http://linked.open...avai/riv/aktivita	I P V Z
http://linked.open...avai/riv/aktivity	I, P(GA206/06/1306), P(GA206/09/2062), P(IAA600380701), P(OC08013), P(OC09083), V, Z(AV0Z50380511)
http://linked.open...iv/cisloPeriodika	16
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Havlová, Marie Dobrá, Jana
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	251447
http://linked.open...ai/riv/idVysledku	RIV/00216208:11310/10:10109427
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	drought; cytokinin; auxin (en)
http://linked.open.../riv/klicoveSlovo	cytokinin drought auxin
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[F293B24370EB]
http://linked.open...i/riv/nazevZdroje	Journal of Plant Physiology
http://linked.open...in/vavai/riv/obor	ED
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	10 (xsd:int)
http://linked.open...vavai/riv/projekt	Alternative ways regulating intra- and extracellular concentrations and activities of isoprenoid cytokinins in plants Effects of drought and heat stress on polyamine metabolism in wild type and transgenic tobacco plants. The effect of biotic stress on hormone pool in grapevine The role of cytokinin/abscisic acid balance in abiotic stress response and recovery The role of cytokinins and polyamines in heat stress response and thermotolerance in tobacco and Arabidopsis plants
http://linked.open...UplatneniVysledku	2010
http://linked.open...v/svazekPeriodika	167
http://linked.open...iv/tvurceVysledku	Dobrev, Petre Haisel, Daniel Malbeck, Jiří Motyka, Václav Vaňková, Radomíra Gaudinová, Alena Havlová, Marie Gubiš, Jozef Dobrá, Jana Prášil, Ilja T.
http://linked.open...ain/vavai/riv/wos	000283977600006
http://linked.open...n/vavai/riv/zamer	Mechanismy regulace růstu a vývoje rostlin na úrovni buněk, orgánů a celých organismů: fyziologické, genetické a molekulárně biologické základy
issn	0176-1617
number of pages	11 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.jplph.2010.05.013
http://localhost/t...ganizacniJednotka	11310

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