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Statements

Subject Item
n2:RIV%2F61389030%3A_____%2F13%3A00399219%21RIV14-AV0-61389030
rdf:type
skos:Concept n5:Vysledek
dcterms:description
Verticillium longisporum is a vascular pathogen that infects the Brassicaceae host plants Arabidopsis thaliana and Brassica napus. The soilborne fungus enters the plant via the roots and colonizes the xylem of roots, stems, and leaves. During late stages of infections, Verticillium spp. spread into senescing tissue and switch from biotrophic to a necrotrophic life style. Typical symptoms of V longisporum-induced disease are stunted growth and leaf chlorosis. Expression analyses of the senescence marker genes SENESCENCE-ASSOCIATED GENE12, SENESCENCE-ASSOCIATED GENE13, and WRKY53 revealed that the observed chlorosis is a consequence of premature senescence triggered by Vertkillium infection. Our analyses show that, concomitant with the development of chlorosis, levels of trans-zeatin decrease in infected plants. Potentially, induction of cytokinin oxidase/dehydrogenase expression by Verticillium infection contributes to the observed decreases in cytokinin levels. Stabilization of Arabidopsis cytokinin levels by both pharmacological and genetic approaches inhibits Verticillium proliferation and coincides with reduced disease symptom development. In summary, our results indicate that V longisporum triggers premature plant senescence for efficient host plant colonization. Verticillium longisporum is a vascular pathogen that infects the Brassicaceae host plants Arabidopsis thaliana and Brassica napus. The soilborne fungus enters the plant via the roots and colonizes the xylem of roots, stems, and leaves. During late stages of infections, Verticillium spp. spread into senescing tissue and switch from biotrophic to a necrotrophic life style. Typical symptoms of V longisporum-induced disease are stunted growth and leaf chlorosis. Expression analyses of the senescence marker genes SENESCENCE-ASSOCIATED GENE12, SENESCENCE-ASSOCIATED GENE13, and WRKY53 revealed that the observed chlorosis is a consequence of premature senescence triggered by Vertkillium infection. Our analyses show that, concomitant with the development of chlorosis, levels of trans-zeatin decrease in infected plants. Potentially, induction of cytokinin oxidase/dehydrogenase expression by Verticillium infection contributes to the observed decreases in cytokinin levels. Stabilization of Arabidopsis cytokinin levels by both pharmacological and genetic approaches inhibits Verticillium proliferation and coincides with reduced disease symptom development. In summary, our results indicate that V longisporum triggers premature plant senescence for efficient host plant colonization.
dcterms:title
Stabilization of Cytokinin Levels Enhances Arabidopsis Resistance Against Verticillium longisporum Stabilization of Cytokinin Levels Enhances Arabidopsis Resistance Against Verticillium longisporum
skos:prefLabel
Stabilization of Cytokinin Levels Enhances Arabidopsis Resistance Against Verticillium longisporum Stabilization of Cytokinin Levels Enhances Arabidopsis Resistance Against Verticillium longisporum
skos:notation
RIV/61389030:_____/13:00399219!RIV14-AV0-61389030
n5:predkladatel
n9:ico%3A61389030
n4:aktivita
n14:Z n14:P
n4:aktivity
P(ED0007/01/01), Z(AV0Z50380511)
n4:cisloPeriodika
8
n4:dodaniDat
n15:2014
n4:domaciTvurceVysledku
n10:4712048 n10:3686957
n4:druhVysledku
n17:J
n4:duvernostUdaju
n13:S
n4:entitaPredkladatele
n12:predkladatel
n4:idSjednocenehoVysledku
107401
n4:idVysledku
RIV/61389030:_____/13:00399219
n4:jazykVysledku
n20:eng
n4:klicovaSlova
LEAF SENESCENCE; IPT GENE; BIOCHEMICAL-CHARACTERIZATION
n4:klicoveSlovo
n6:LEAF%20SENESCENCE n6:BIOCHEMICAL-CHARACTERIZATION n6:IPT%20GENE
n4:kodStatuVydavatele
US - Spojené státy americké
n4:kontrolniKodProRIV
[E05F39734935]
n4:nazevZdroje
Molecular Plant-Microbe Interactions
n4:obor
n16:EB
n4:pocetDomacichTvurcuVysledku
2
n4:pocetTvurcuVysledku
10
n4:projekt
n19:ED0007%2F01%2F01
n4:rokUplatneniVysledku
n15:2013
n4:svazekPeriodika
26
n4:tvurceVysledku
Strnad, Miroslav Janz, D. Klásková, J. Teichmann, T. Reusche, M. Novák, Ondřej Thole, K. Spíchal, L. Truskina, J. Lipka, V.
n4:wos
000321882400003
n4:zamer
n18:AV0Z50380511
s:issn
0894-0282
s:numberOfPages
11
n8:doi
10.1094/MPMI-12-12-0287-R