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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1111/nph.14729
|2 doi
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|a pubmed24n0917.xml
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|a (DE-627)NLM275095207
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|a (NLM)28836669
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|a DE-627
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|c DE-627
|e rakwb
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|a eng
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|a Radchuk, Volodymyr
|e verfasserin
|4 aut
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|a Vacuolar processing enzyme 4 contributes to maternal control of grain size in barley by executing programmed cell death in the pericarp
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|c 2018
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 01.10.2019
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a CommentIn: New Phytol. 2018 May;218(3):879-881. - PMID 29658638
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|a Citation Status MEDLINE
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|a © 2017 The Authors. New Phytologist © 2017 New Phytologist Trust.
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|a The angiosperm embryo and endosperm are limited in space because they grow inside maternal seed tissues. The elimination of cell layers of the maternal seed coat by programmed cell death (PCD) could provide space and nutrition to the filial organs. Using the barley (Hordeum vulgare L.) seed as a model, we elucidated the role of vacuolar processing enzyme 4 (VPE4) in cereals by using an RNAi approach and targeting the enzymatic properties of the recombinant protein. A comparative characterization of transgenic versus wild-type plants included transcriptional and metabolic profiling, flow cytometry, histology and nuclear magnetic imaging of grains. The recombinant VPE4 protein exhibited legumain and caspase-1 properties in vitro. Pericarp disintegration was delayed in the transgenic grains. Although the VPE4 gene and enzymatic activity was decreased in the early developing pericarp, storage capacity and the size of the endosperm and embryo were reduced in the mature VPE4-repressed grains. The persistence of the pericarp in the VPE4-affected grains constrains endosperm and embryo growth and leads to transcriptional reprogramming, perturbations in signalling and adjustments in metabolism. We conclude that VPE4 expression executes PCD in the pericarp, which is required for later endosperm filling, and argue for a role of PCD in maternal control of seed size in cereals
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|a Journal Article
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|a barley
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|a caspase-like activities
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|a grain size
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|a maternal control of seed size
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|a pericarp
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|a programmed cell death (PCD)
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|a vacuolar processing enzyme
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|a Plant Proteins
|2 NLM
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|a Recombinant Proteins
|2 NLM
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|a Caspases
|2 NLM
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|a EC 3.4.22.-
|2 NLM
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|a Cysteine Endopeptidases
|2 NLM
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| 650 |
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|a EC 3.4.22.-
|2 NLM
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| 650 |
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|a vacuolar processing enzyme
|2 NLM
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| 650 |
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|a EC 3.4.22.-
|2 NLM
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| 650 |
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|a asparaginylendopeptidase
|2 NLM
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| 650 |
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|a EC 3.4.22.34
|2 NLM
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| 700 |
1 |
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|a Tran, Van
|e verfasserin
|4 aut
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|a Radchuk, Ruslana
|e verfasserin
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|a Diaz-Mendoza, Mercedes
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|a Weier, Diana
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|a Fuchs, Joerg
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|a Riewe, David
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|a Hensel, Goetz
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|a Kumlehn, Jochen
|e verfasserin
|4 aut
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|a Munz, Eberhard
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|a Heinzel, Nicolas
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|a Rolletschek, Hardy
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|a Martinez, Manuel
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|a Borisjuk, Ljudmilla
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 218(2018), 3 vom: 20. Mai, Seite 1127-1142
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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| 773 |
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|g volume:218
|g year:2018
|g number:3
|g day:20
|g month:05
|g pages:1127-1142
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|u http://dx.doi.org/10.1111/nph.14729
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