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231225s2021 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2021.09.025
|2 doi
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|a pubmed24n1104.xml
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|a (DE-627)NLM33129074X
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|a (NLM)34587574
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|a (PII)S0981-9428(21)00490-3
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|a eng
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|a Gammoudi, Najet
|e verfasserin
|4 aut
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|a Hydrotime analysis to explore the effect of H2O2-priming in the relationship between water potential (Ψ) and germination rate of Capsicum annuum L. seed under NaCl- and PEG-induced stress
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|c 2021
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 13.10.2021
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|a Date Revised 13.10.2021
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2021 Elsevier Masson SAS. All rights reserved.
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|a Hydrogen peroxide (H2O2) priming was proved to be effective to boost salt and drought stress tolerance in Capsicum annuum L. Hither, hydrotime (HT) approach, a population-based threshold model-germination dependence on water availability, was introduced to account for the effects of reduced water potential on H2O2-primed seeds in progress toward germination. Pre-optimized H2O2 concentrations (1 and 10 mM for 24 h at 25 °C) were applied. Subsequently, seeds were germinated over a range of water potential (Ψ) (0 to -1.2 MPa) induced by sodium chloride (NaCl) and polyethylene glycol (PEG-6000) at 25 °C. We suggest that H2O2-priming affects differently the three derived items of HT model; induced lower hydrotime constant (θH) thus, revealed more rapid germination particularly evident with PEG, shifted the threshold or base water potential for 50% germination (Ψb(50)) towards a more negative value in NaCl culture, reflected a better salinity tolerance, though, the opposite effect was recorded with PEG, and reduced the standard deviation (σΨb), proved a better uniformity of the germination process for both cultures. Thus, H2O2-priming increased GRg (1/tg) at all Ψ>Ψb(g) which is due to both a lower Ψb(50) and a smaller θH in the primed seeds for NaCl culture and primarily owing to reducing θH with no positive effect on Ψb(50) for PEG culture. A normalized time-scale, for comparing responses, was introduced and confirmed the aforementioned impact. Therefore, the crosstalk between H2O2 molecule and different cell pathways generates a constructive response in accordance with imposed stress
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|a Journal Article
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|a Base water potential
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|a Capsicum
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|a Drought
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|a H(2)O(2)−priming
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|a Hydrotime analysis
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|a Salinity
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|a Water
|2 NLM
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|a 059QF0KO0R
|2 NLM
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|a Sodium Chloride
|2 NLM
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|a 451W47IQ8X
|2 NLM
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|a Hydrogen Peroxide
|2 NLM
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|a BBX060AN9V
|2 NLM
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|a Nagaz, Kamel
|e verfasserin
|4 aut
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|a Ferchichi, Ali
|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 167(2021) vom: 30. Okt., Seite 990-998
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnns
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|g volume:167
|g year:2021
|g day:30
|g month:10
|g pages:990-998
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|u http://dx.doi.org/10.1016/j.plaphy.2021.09.025
|3 Volltext
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