About: Activation tagging identifies a gene from Petunia hybrids responsible for the production of active cytokinins in plants.

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About: Activation tagging identifies a gene from Petunia hybrids responsible for the production of active cytokinins in plants. Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Cytokinins (CKs) are phytohormones that play an important role in plant growth and development. Although the first naturally produced CK, zeatin, was isolated almost four decades ago, no endogenous gene has been shown to produce active CKs in planta. In an activation tagging experiment we have identified a petunia line that showed CK-specific effects including enhanced shooting, reduced apical dominance and delayed senescence and flowering. This phenotype correlated with the enhanced expression of a gene we labelled Sho (Shooting). Sho. which encodes a protein with homology to isopentenyl transferases (IPTs), also causes CK-specific effects when expressed in other plant species. In contrast to the ipt gene from Agrobacterium, which primarily increases zeatin levels, Sho expression in petunia and tobacco especially enhances the levels of certain N6-(A2-isopentenyl) adenosine (2iP) derivatives. Our data suggest that Sho encodes a plant enzyme whose activity is sufficient to produce active CKs in plants. Cytokinins (CKs) are phytohormones that play an important role in plant growth and development. Although the first naturally produced CK, zeatin, was isolated almost four decades ago, no endogenous gene has been shown to produce active CKs in planta. In an activation tagging experiment we have identified a petunia line that showed CK-specific effects including enhanced shooting, reduced apical dominance and delayed senescence and flowering. This phenotype correlated with the enhanced expression of a gene we labelled Sho (Shooting). Sho. which encodes a protein with homology to isopentenyl transferases (IPTs), also causes CK-specific effects when expressed in other plant species. In contrast to the ipt gene from Agrobacterium, which primarily increases zeatin levels, Sho expression in petunia and tobacco especially enhances the levels of certain N6-(A2-isopentenyl) adenosine (2iP) derivatives. Our data suggest that Sho encodes a plant enzyme whose activity is sufficient to produce active CKs in plants. (en)
Title	Activation tagging identifies a gene from Petunia hybrids responsible for the production of active cytokinins in plants. Activation tagging identifies a gene from Petunia hybrids responsible for the production of active cytokinins in plants. (en)
skos:prefLabel	Activation tagging identifies a gene from Petunia hybrids responsible for the production of active cytokinins in plants. Activation tagging identifies a gene from Petunia hybrids responsible for the production of active cytokinins in plants. (en)
skos:notation	RIV/61389030:_____/02:56023006!RIV/2003/GA0/A56003/N
http://linked.open.../vavai/riv/strany	797;808
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA206/00/1354), P(GA206/02/0967), P(GA522/02/0530), P(LN00A081), Z(AV0Z5038910)
http://linked.open...iv/cisloPeriodika	6
http://linked.open...vai/riv/dodaniDat	2003
http://linked.open...aciTvurceVysledku	Malbeck, Jiří Macháčková, Ivana
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	Ústav experimentální botaniky AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	637416
http://linked.open...ai/riv/idVysledku	RIV/61389030:_____/02:56023006
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	cytokinin; isopentenyl transferase; plant hormones (en)
http://linked.open.../riv/klicoveSlovo	cytokinin isopentenyl transferase plant hormones
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[B52DB3806563]
http://linked.open...i/riv/nazevZdroje	Plant Journal
http://linked.open...in/vavai/riv/obor	EF
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...ocetUcastnikuAkce	0 (xsd:int)
http://linked.open...nichUcastnikuAkce	0 (xsd:int)
http://linked.open...vavai/riv/projekt	Hormonal regulation of leaf senescence and its relation to utilization of nitrogen in cereals Signaling pathways in plants Role of melatonin in regulation of photoperiodic and rhytmic processes in plants Targeting of cytokinin oxidase and its role in regulation of plant development
http://linked.open...UplatneniVysledku	2002
http://linked.open...v/svazekPeriodika	29
http://linked.open...iv/tvurceVysledku	Macháčková, Ivana Malbeck, Jiří Adams, Ch. Meyer, P. Scollan, C. Zubko, E.
http://linked.open...n/vavai/riv/zamer	Physiological and genetical bases of plant development, cell cycle, morphogenesis, stress reactions and biotechnologies. Genome organisation and function
issn	0960-7412
number of pages	12 (xsd:int)

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