Constitutive salicylic acid accumulation in pi4kIIIβ1β2 Arabidopsis plants stunts rosette but not root growth

© 2014 The Authors. New Phytologist © 2014 New Phytologist Trust.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 203(2014), 3 vom: 23. Aug., Seite 805-16
1. Verfasser: Sašek, Vladimír (VerfasserIn)
Weitere Verfasser: Janda, Martin, Delage, Elise, Puyaubert, Juliette, Guivarc'h, Anne, López Maseda, Encarnación, Dobrev, Petre I, Caius, José, Bóka, Károly, Valentová, Olga, Burketová, Lenka, Zachowski, Alain, Ruelland, Eric
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2014
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Arabidopsis PR-1 dwarf phenotype hormone transduction phosphatidylinositol-4-kinases (PI4Ks) resistance salicylic acid (SA) Arabidopsis Proteins mehr... Reactive Oxygen Species 1-Phosphatidylinositol 4-Kinase EC 2.7.1.67 PI4KIIIbeta1 protein, Arabidopsis PI4KIIIbeta2 protein, Arabidopsis Salicylic Acid O414PZ4LPZ
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100 1 |a Sašek, Vladimír  |e verfasserin  |4 aut 
245 1 0 |a Constitutive salicylic acid accumulation in pi4kIIIβ1β2 Arabidopsis plants stunts rosette but not root growth 
264 1 |c 2014 
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500 |a Date Completed 30.03.2015 
500 |a Date Revised 30.09.2020 
500 |a published: Print-Electronic 
500 |a Citation Status MEDLINE 
520 |a © 2014 The Authors. New Phytologist © 2014 New Phytologist Trust. 
520 |a Phospholipids have recently been found to be integral elements of hormone signalling pathways. An Arabidopsis thaliana double mutant in two type III phosphatidylinositol-4-kinases (PI4Ks), pi4kIIIβ1β2, displays a stunted rosette growth. The causal link between PI4K activity and growth is unknown. Using microarray analysis, quantitative reverse transcription polymerase chain reaction (RT-qPCR) and multiple phytohormone analysis by LC-MS we investigated the mechanism responsible for the pi4kIIIβ1β2 phenotype. The pi4kIIIβ1β2 mutant accumulated a high concentration of salicylic acid (SA), constitutively expressed SA marker genes including PR-1, and was more resistant to Pseudomonas syringae. pi4kIIIβ1β2 was crossed with SA signalling mutants eds1 and npr1 and SA biosynthesis mutant sid2 and NahG. The dwarf phenotype of pi4kIIIβ1β2 rosettes was suppressed in all four triple mutants. Whereas eds1 pi4kIIIβ1β2, sid2 pi4kIIIβ1β2 and NahG pi4kIIIβ1β2 had similar amounts of SA as the wild-type (WT), npr1pi4kIIIβ1β2 had more SA than pi4kIIIβ1β2 despite being less dwarfed. This indicates that PI4KIIIβ1 and PI4KIIIβ2 are genetically upstream of EDS1 and need functional SA biosynthesis and perception through NPR1 to express the dwarf phenotype. The slow root growth phenotype of pi4kIIIβ1β2 was not suppressed in any of the triple mutants. The pi4kIIIβ1β2 mutations together cause constitutive activation of SA signalling that is responsible for the dwarf rosette phenotype but not for the short root phenotype 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a Arabidopsis 
650 4 |a PR-1 
650 4 |a dwarf phenotype 
650 4 |a hormone transduction 
650 4 |a phosphatidylinositol-4-kinases (PI4Ks) 
650 4 |a resistance 
650 4 |a salicylic acid (SA) 
650 7 |a Arabidopsis Proteins  |2 NLM 
650 7 |a Reactive Oxygen Species  |2 NLM 
650 7 |a 1-Phosphatidylinositol 4-Kinase  |2 NLM 
650 7 |a EC 2.7.1.67  |2 NLM 
650 7 |a PI4KIIIbeta1 protein, Arabidopsis  |2 NLM 
650 7 |a EC 2.7.1.67  |2 NLM 
650 7 |a PI4KIIIbeta2 protein, Arabidopsis  |2 NLM 
650 7 |a EC 2.7.1.67  |2 NLM 
650 7 |a Salicylic Acid  |2 NLM 
650 7 |a O414PZ4LPZ  |2 NLM 
700 1 |a Janda, Martin  |e verfasserin  |4 aut 
700 1 |a Delage, Elise  |e verfasserin  |4 aut 
700 1 |a Puyaubert, Juliette  |e verfasserin  |4 aut 
700 1 |a Guivarc'h, Anne  |e verfasserin  |4 aut 
700 1 |a López Maseda, Encarnación  |e verfasserin  |4 aut 
700 1 |a Dobrev, Petre I  |e verfasserin  |4 aut 
700 1 |a Caius, José  |e verfasserin  |4 aut 
700 1 |a Bóka, Károly  |e verfasserin  |4 aut 
700 1 |a Valentová, Olga  |e verfasserin  |4 aut 
700 1 |a Burketová, Lenka  |e verfasserin  |4 aut 
700 1 |a Zachowski, Alain  |e verfasserin  |4 aut 
700 1 |a Ruelland, Eric  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t The New phytologist  |d 1979  |g 203(2014), 3 vom: 23. Aug., Seite 805-16  |w (DE-627)NLM09818248X  |x 1469-8137  |7 nnns 
773 1 8 |g volume:203  |g year:2014  |g number:3  |g day:23  |g month:08  |g pages:805-16 
856 4 0 |u http://dx.doi.org/10.1111/nph.12822  |3 Volltext 
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