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231224s2014 xx |||||o 00| ||eng c |
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|a 10.1016/j.plantsci.2014.06.006
|2 doi
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|a pubmed25n0800.xml
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|a (DE-627)NLM24001684X
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|a (NLM)25017167
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|a (PII)S0168-9452(14)00140-X
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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 Lai, Diwen
|e verfasserin
|4 aut
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|a Endogenous hydrogen sulfide enhances salt tolerance by coupling the reestablishment of redox homeostasis and preventing salt-induced K⁺ loss in seedlings of Medicago sativa
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|c 2014
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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 23.02.2015
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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 © 2014 Elsevier Ireland Ltd. All rights reserved.
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|a Despite the external application of hydrogen sulfide (H2S) conferring plant tolerance against various environmental cues, the physiological significance of l-cysteine desulfhydrase (L-DES)-associated endogenous H2S production involved in salt-stress signaling was poorly understood. To address this gap, the participation of in planta changes of H2S homeostasis involved in alfalfa salt tolerance was investigated. The increasing concentration of NaCl (from 50 to 300 mM) progressively caused the induction of total l-DES activity and the increase of endogenous H2S production. NaCl-triggered toxicity symptoms (175 mM), including seedling growth inhibition and lipid peroxidation, were alleviated by sodium hydrosulfide (NaHS; 100 μM), a H2S donor, whereas aggravated by an inhibitor of l-DES or a H2S scavenger. A weaker or negative response was observed in lower or higher dose of NaHS. Further results showed that endogenous l-DES-related H2S modulated several genes/activities of antioxidant defence enzymes, and also regulated the contents of antioxidant compounds, thus counterbalancing the NaCl-induced lipid peroxidation. Moreover, H2S maintained K(+)/Na(+) homeostasis by preventing the NaCl-triggered K(+) efflux, which might be result form the impairment of SKOR expression. Together, our findings indicated that endogenous H2S homeostasis enhance salt tolerance by coupling the reestablishment of redox balance and restraining K(+) efflux in alfalfa seedlings
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Hydrogen sulfide
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|a Medicago sativa
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|a Oxidative damage
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|a Potassium efflux
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|a Redox homeostasis
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|a Salt tolerance
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|a Antioxidants
|2 NLM
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|a Free Radical Scavengers
|2 NLM
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|a Potassium Channels
|2 NLM
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|a Sulfides
|2 NLM
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|a Sodium Chloride
|2 NLM
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|a 451W47IQ8X
|2 NLM
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|a Sodium
|2 NLM
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|a 9NEZ333N27
|2 NLM
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|a Cystathionine gamma-Lyase
|2 NLM
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|a EC 4.4.1.1
|2 NLM
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|a sodium bisulfide
|2 NLM
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|a FWU2KQ177W
|2 NLM
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|a Potassium
|2 NLM
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|a RWP5GA015D
|2 NLM
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|a Hydrogen Sulfide
|2 NLM
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|a YY9FVM7NSN
|2 NLM
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| 700 |
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|a Mao, Yu
|e verfasserin
|4 aut
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| 700 |
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|a Zhou, Heng
|e verfasserin
|4 aut
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| 700 |
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|a Li, Feng
|e verfasserin
|4 aut
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|a Wu, Mingzhu
|e verfasserin
|4 aut
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| 700 |
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|a Zhang, Jing
|e verfasserin
|4 aut
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|a He, Ziyi
|e verfasserin
|4 aut
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|a Cui, Weiti
|e verfasserin
|4 aut
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|a Xie, Yanjie
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant science : an international journal of experimental plant biology
|d 1985
|g 225(2014) vom: 10. Aug., Seite 117-29
|w (DE-627)NLM098174193
|x 1873-2259
|7 nnns
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| 773 |
1 |
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|g volume:225
|g year:2014
|g day:10
|g month:08
|g pages:117-29
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|u http://dx.doi.org/10.1016/j.plantsci.2014.06.006
|3 Volltext
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