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231224s2011 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2011.07.017
|2 doi
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|a pubmed24n0703.xml
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|a (DE-627)NLM210889624
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|a (NLM)21856164
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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 Bissenbaev, Amangeldy K
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Presence of base excision repair enzymes in the wheat aleurone and their activation in cells undergoing programmed cell death
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|c 2011
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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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|a Date Completed 23.01.2012
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2011 Elsevier Masson SAS. All rights reserved.
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|a Cereal aleurone cells are specialized endosperm cells that produce enzymes to hydrolyze the starchy endosperm during germination. Aleurone cells can undergo programmed cell death (PCD) when incubated in the presence of gibberellic acid (GA) in contrast to abscisic acid (ABA) which inhibits the process. The progression of PCD in aleurone layer cells of wheat grain is accompanied by an increase in deoxyribonuclease (DNase) activities and the internucleosomal degradation of nuclear DNA. Reactive oxygen species (ROS) are increased during PCD in the aleurone cells owing to the β-oxidation of triglycerides and inhibition of the antioxidant enzymes possibly leading to extensive oxidative damage to DNA. ROS generate mainly non-bulky DNA base lesions which are removed in the base excision repair (BER) pathway, initiated by the DNA glycosylases. At present, very little is known about oxidative DNA damage repair in cereals. Here, we study DNA repair in the cell-free extracts of wheat aleurone layer incubated or not with phytohormones. We show, for the first time, the presence of 8-oxoguanine-DNA and ethenoadenine-DNA glycosylase activities in wheat aleurone cells. Interestingly, the DNA glycosylase and AP endonuclease activities are strongly induced in the presence of GA. Based on these data we propose that GA in addition to activation of nuclear DNases also induces the DNA repair activities which remove oxidized DNA bases in the BER pathway. Potential roles of the wheat DNA glycosylases in GA-induced oligonucleosomal fragmentation of DNA and metabolic activation of aleurone layer cells via repair of transcribed regions are discussed
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a DNA, Plant
|2 NLM
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|a Gibberellins
|2 NLM
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|a Plant Extracts
|2 NLM
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|a Reactive Oxygen Species
|2 NLM
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|a Abscisic Acid
|2 NLM
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|a 72S9A8J5GW
|2 NLM
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|a gibberellic acid
|2 NLM
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|a BU0A7MWB6L
|2 NLM
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|a Glucosephosphate Dehydrogenase
|2 NLM
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|a EC 1.1.1.49
|2 NLM
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|a Deoxyribonucleases
|2 NLM
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|a EC 3.1.-
|2 NLM
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|a Acid Anhydride Hydrolases
|2 NLM
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|a EC 3.6.-
|2 NLM
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|a inosine diphosphatase
|2 NLM
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|a EC 3.6.1.-
|2 NLM
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|a DNA Repair Enzymes
|2 NLM
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|a EC 6.5.1.-
|2 NLM
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|a Ishchenko, Alexander A
|e verfasserin
|4 aut
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|a Taipakova, Sabira M
|e verfasserin
|4 aut
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| 700 |
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|a Saparbaev, Murat K
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant physiology and biochemistry : PPB
|d 1991
|g 49(2011), 10 vom: 15. Okt., Seite 1155-64
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnns
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| 773 |
1 |
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|g volume:49
|g year:2011
|g number:10
|g day:15
|g month:10
|g pages:1155-64
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|u http://dx.doi.org/10.1016/j.plaphy.2011.07.017
|3 Volltext
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|a AR
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|d 49
|j 2011
|e 10
|b 15
|c 10
|h 1155-64
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