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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2020.09.033
|2 doi
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|a pubmed25n1055.xml
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|a (DE-627)NLM316653802
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|a (NLM)33096513
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|a (PII)S0981-9428(20)30482-4
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|e rakwb
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|a eng
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| 100 |
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|a Xu, Jiwen
|e verfasserin
|4 aut
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|a Exogenous spermine-induced expression of SlSPMS gene improves salinity-alkalinity stress tolerance by regulating the antioxidant enzyme system and ion homeostasis in tomato
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|c 2020
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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
|b cr
|2 rdacarrier
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|a Date Completed 26.01.2021
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|a Date Revised 07.12.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2020 Elsevier Masson SAS. All rights reserved.
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|a The study tested the function of exogenous spermine (Spm) in resisting salinity-alkalinity stress in tomato seedlings and found that tomato Spm synthase gene (SlSPMS) was involved in this regulation. The tomato seedlings cultivated in normal conditions or salinity-alkalinity conditions were irrigated with 100 ml one strength Hoagland nutrient solution 100 ml mixed solution (5 ml 300 mmol/L NaCl, 45 ml 300 mmol/L Na2SO4, 45 ml 300 mmol/L NaHCO3, and 5 ml 300 mmol/L Na2CO3 (pH = 8.90)) every 2 days, respectively. The 0.5 mM Spm pretreatment improved superoxide dismutase (SOD; EC 1.15.1.1) activity, catalase (CAT; EC 1.11.1.6) activity, ascorbate peroxidase (APX; EC 1.11.1.11) activity, and glutathione reductase (GR; EC 1.6.4.2) activity and decreased endogenous hydrogen peroxide (H2O2) content, malondialdehyde (MDA) content, and relative electrical conductivity (REC) in tomato leaves. Na+ content declined and K+ concentration rose in tomato seedlings when pre-treated with Spm. However the results showed that under salinity-alkalinity stress, silencing of SlSPMS with virus-induced gene silencing had lower antioxidant enzyme activities and higher Na+ content and lower K+ content than normal tomato seedlings, meaning that they had low salinity-alkalinity tolerance. Exogenous Spm could not reconstruct the tolerance to salinity-alkalinity stress in SlSPMS gene-silencing tomato seedlings. Taken together, exogenous Spm could induce the expression level of SlSPMS, which regulated the antioxidant enzyme system and ion homeostasis in tomato seedlings living in salinity-alkalinity environment, thereby improving the ability of tomato seedlings to resist salinity-alkalinity stress
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|a Journal Article
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|a Ion homeostasis
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|a Salinity–alkalinity
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|a SlSPMS gene silencing
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|a Spermine
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|a Tomato seedlings
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|a Antioxidants
|2 NLM
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|a Spermine
|2 NLM
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| 650 |
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|a 2FZ7Y3VOQX
|2 NLM
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| 650 |
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|a Spermine Synthase
|2 NLM
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| 650 |
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|a EC 2.5.1.22
|2 NLM
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| 700 |
1 |
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|a Yang, Jianyu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Xu, Zijian
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhao, Dingkang
|e verfasserin
|4 aut
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| 700 |
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|a Hu, Xiaohui
|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 157(2020) vom: 05. Dez., Seite 79-92
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnas
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| 773 |
1 |
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|g volume:157
|g year:2020
|g day:05
|g month:12
|g pages:79-92
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|u http://dx.doi.org/10.1016/j.plaphy.2020.09.033
|3 Volltext
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