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231224s2017 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/erx176
|2 doi
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|a pubmed24n0909.xml
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|a (DE-627)NLM272749583
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|a (NLM)28595359
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Ma, Yi
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Intracellular Ca2+ is important for flagellin-triggered defense in Arabidopsis and involves inositol polyphosphate signaling
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|c 2017
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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| 500 |
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|a Date Completed 22.02.2018
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|a Date Revised 09.12.2020
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|a published: Print
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|a Citation Status MEDLINE
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|a © The Author 2017. Published by Oxford University Press on behalf of the Society for Experimental Biology.
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|a Cytosolic Ca2+ increase is a crucial and early step of plant immunity evoked by pathogen-associated molecular patterns (PAMPs) such as flagellin (flg). Components responsible for this increase are still not uncovered, although current models of plant immune signaling portray extracellular Ca2+ influx as paramount to flg activation of defense pathways. Work presented here provides new insights into cytosolic Ca2+ increase associated with flg-induced defense responses. We show that extracellular Ca2+ contributes more to immune responses evoked by plant elicitor peptide (Pep3) than that evoked by flg, indicating an intracellular Ca2+ source responsible for immune responses evoked by flg. Genetic impairment of the inositol polyphosphate (InsP) and G-protein signal associated with flg perception reduced flg-dependent immune responses. Previous work indicates that prior exposure of Arabidopsis plants to flg leads to an immune response reflected by less vigorous growth of a pathogenic microbe. We found that this immune response to flg was compromised in mutants lacking the ability to generate an InsP or G-protein signal. We conclude that the recruitment of intracellular Ca2+ stores by flg may involve InsP and G-protein signaling. We also found a notable difference in contribution of intracellular stores of Ca2+ to the immune signaling evoked by another PAMP, elf18 peptide, which had a very different response profile to impairment of InsP signaling. Although Ca2+ signaling is at the core of the innate immune as well as hypersensitive response to plant pathogens, it appears that the molecular mechanisms generating the Ca2+ signal in response to different PAMPs are different
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|a Journal Article
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|a Ca2+ signaling
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|a G-proteins
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|a PAMP
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|a immune responses
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| 650 |
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|a inositol polyphosphate
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| 650 |
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4 |
|a intracellular Ca2+ store
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|a Inositol Phosphates
|2 NLM
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| 650 |
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|a Pathogen-Associated Molecular Pattern Molecules
|2 NLM
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| 650 |
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|a Flagellin
|2 NLM
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| 650 |
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|a 12777-81-0
|2 NLM
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| 650 |
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|a Calcium
|2 NLM
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| 650 |
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|a SY7Q814VUP
|2 NLM
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| 700 |
1 |
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|a Zhao, Yichen
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Berkowitz, Gerald A
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 68(2017), 13 vom: 15. Juni, Seite 3617-3628
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
1 |
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|g volume:68
|g year:2017
|g number:13
|g day:15
|g month:06
|g pages:3617-3628
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| 856 |
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|u http://dx.doi.org/10.1093/jxb/erx176
|3 Volltext
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|h 3617-3628
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