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Statements

Subject Item
n2:RIV%2F67179843%3A_____%2F14%3A00438499%21RIV15-AV0-67179843
rdf:type
n15:Vysledek skos:Concept
dcterms:description
Despite the completion of the Arabidopsis genome sequence, for only a relatively low percentage of the encoded proteins experimental evidence concerning their function is available. Plant proteins that harbour a single PLAT (Polycystin, Lipoxygenase, Alpha-toxin and Triacylglycerol lipase) domain and belong to the PLAT-plant-stress protein family are ubiquitously present in monocot and dicots. However, the function of PLAT-plant-stress proteins is still poorly understood. Therefore, we have assessed the function of the uncharacterised Arabidopsis PLAT-plant-stress family members through a combination of functional genetic and physiological approaches. PLAT1 overexpression conferred increased abiotic stress tolerance, including cold, drought and salt stress, while loss-of-function resulted in opposite effects on abiotic stress tolerance. Strikingly, PLAT1 promoted growth under non-stressed conditions. Abiotic stress treatments induced PLAT1 expression and caused expansion of its expression domain. The ABF/ABRE transcription factors, which are positive mediators of abscisic acid signalling, activate PLAT1 promoter activity in transactivation assays and directly bind to the ABRE elements located in this promoter in electrophoretic mobility shift assays. This suggests that PLAT1 represents a novel downstream target of the abscisic acid signalling pathway. Thus, we showed that PLAT1 critically functions as positive regulator of abiotic stress tolerance, but also is involved in regulating plant growth, and thereby assigned a function to this previously uncharacterised PLAT domain protein. The functional data obtained for PLAT1 support that PLAT-plant-stress proteins in general could be promising targets for improving abiotic stress tolerance without yield penalty. Despite the completion of the Arabidopsis genome sequence, for only a relatively low percentage of the encoded proteins experimental evidence concerning their function is available. Plant proteins that harbour a single PLAT (Polycystin, Lipoxygenase, Alpha-toxin and Triacylglycerol lipase) domain and belong to the PLAT-plant-stress protein family are ubiquitously present in monocot and dicots. However, the function of PLAT-plant-stress proteins is still poorly understood. Therefore, we have assessed the function of the uncharacterised Arabidopsis PLAT-plant-stress family members through a combination of functional genetic and physiological approaches. PLAT1 overexpression conferred increased abiotic stress tolerance, including cold, drought and salt stress, while loss-of-function resulted in opposite effects on abiotic stress tolerance. Strikingly, PLAT1 promoted growth under non-stressed conditions. Abiotic stress treatments induced PLAT1 expression and caused expansion of its expression domain. The ABF/ABRE transcription factors, which are positive mediators of abscisic acid signalling, activate PLAT1 promoter activity in transactivation assays and directly bind to the ABRE elements located in this promoter in electrophoretic mobility shift assays. This suggests that PLAT1 represents a novel downstream target of the abscisic acid signalling pathway. Thus, we showed that PLAT1 critically functions as positive regulator of abiotic stress tolerance, but also is involved in regulating plant growth, and thereby assigned a function to this previously uncharacterised PLAT domain protein. The functional data obtained for PLAT1 support that PLAT-plant-stress proteins in general could be promising targets for improving abiotic stress tolerance without yield penalty.
dcterms:title
The Arabidopsis PLAT Domain Protein1 Is Critically Involved in Abiotic Stress Tolerance The Arabidopsis PLAT Domain Protein1 Is Critically Involved in Abiotic Stress Tolerance
skos:prefLabel
The Arabidopsis PLAT Domain Protein1 Is Critically Involved in Abiotic Stress Tolerance The Arabidopsis PLAT Domain Protein1 Is Critically Involved in Abiotic Stress Tolerance
skos:notation
RIV/67179843:_____/14:00438499!RIV15-AV0-67179843
n4:aktivita
n9:I
n4:aktivity
I
n4:cisloPeriodika
11
n4:dodaniDat
n11:2015
n4:domaciTvurceVysledku
Roitsch, Thomas
n4:druhVysledku
n5:J
n4:duvernostUdaju
n12:S
n4:entitaPredkladatele
n6:predkladatel
n4:idSjednocenehoVysledku
3959
n4:idVysledku
RIV/67179843:_____/14:00438499
n4:jazykVysledku
n16:eng
n4:klicovaSlova
abscisic-acid; endoplasmic-reticulum; salicylic-acid; transcription factors; gene-expression; pseudomonas-syringae; signal-transduction; plants response; cold stress; salt stress
n4:klicoveSlovo
n7:gene-expression n7:cold%20stress n7:signal-transduction n7:plants%20response n7:transcription%20factors n7:salicylic-acid n7:salt%20stress n7:abscisic-acid n7:pseudomonas-syringae n7:endoplasmic-reticulum
n4:kodStatuVydavatele
US - Spojené státy americké
n4:kontrolniKodProRIV
[A2AFB2248911]
n4:nazevZdroje
PLoS ONE
n4:obor
n13:EH
n4:pocetDomacichTvurcuVysledku
1
n4:pocetTvurcuVysledku
11
n4:rokUplatneniVysledku
n11:2014
n4:svazekPeriodika
9
n4:tvurceVysledku
Janschek, U. Roitsch, Thomas Walid Wahid, A. Albacete, A. Rim, Y. van der Graaff, E. Kim, S. Böhm, B. Tae Kyung, H. Eom, S. H. Grosskinsky, D. K.
n4:wos
000345558500117
s:issn
1932-6203
s:numberOfPages
11
n14:doi
10.1371/journal.pone.0112946