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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1007/s10646-022-02530-w
|2 doi
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|a pubmed24n1127.xml
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|a DE-627
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Li, Lijuan
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Enhancement of drought tolerance in Arabidopsis plants induced by sulfur dioxide
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|c 2022
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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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|a Date Completed 10.05.2022
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|a Date Revised 10.05.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2022. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
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|a Sulfur dioxide (SO2) is a common air pollutant that has multiple effects on plants. In the present study, the improvement of drought tolerance in Arabidopsis plants by SO2 fumigation was investigated. The results showed that pre-exposure to 30 mg/m3 SO2 for 72 h could reduce water loss, stomatal conductance (Gs) and the transpiration rate (Tr) but increased the net photosynthetic rate (Pn), water use efficiency (iWUE) and photosynthetic pigment contents under drought conditions. The activities of superoxide dismutase (SOD) and peroxidase (POD) were significantly increased, while the contents of hydrogen peroxide (H2O2) and malondialdehyde (MDA) were decreased in SO2-pretreated Arabidopsis plants under drought stress. Additionally, the activity of o-acetylserine(thio)lyase (OASTL) and the content of cysteine (Cys), the rate-limiting enzyme and the first organic product of sulfur assimilation, were significantly increased in drought-stressed plants after SO2 pretreatment, along with increases in other thiol-containing compounds, such as glutathione (GSH) and nonprotein thiol (NPT). Meanwhile, SO2 pre-exposure induced a higher level of proline accumulation, with increased activity of proline synthase P5CS and decreased activity of proline dehydrogenase ProDH. Consistent with the changes in enzyme activity, their corresponding gene expression patterns were different after SO2 treatment. Overall, the enhanced drought tolerance afforded by SO2 might be related to the improvement of plant photosynthesis, antioxidant defense, sulfur assimilation and osmotic adjustment. These findings provide new insights into the role of SO2 in plant adaptation to environmental stress
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|a Journal Article
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|a Drought tolerance
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|a Osmotic adjustment
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|a Photosynthesis
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|a Sulfur assimilation
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|a Sulfur dioxide
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|a Antioxidants
|2 NLM
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|a Sulfhydryl Compounds
|2 NLM
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|a Water
|2 NLM
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|a 059QF0KO0R
|2 NLM
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|a Sulfur Dioxide
|2 NLM
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| 650 |
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|a 0UZA3422Q4
|2 NLM
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| 650 |
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|a Sulfur
|2 NLM
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|a 70FD1KFU70
|2 NLM
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|a Proline
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|a 9DLQ4CIU6V
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|a Hydrogen Peroxide
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|2 NLM
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|a Glutathione
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| 700 |
1 |
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|a Yi, Huilan
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Ecotoxicology (London, England)
|d 1992
|g 31(2022), 4 vom: 16. Mai, Seite 637-648
|w (DE-627)NLM098212214
|x 1573-3017
|7 nnns
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| 773 |
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|g volume:31
|g year:2022
|g number:4
|g day:16
|g month:05
|g pages:637-648
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|u http://dx.doi.org/10.1007/s10646-022-02530-w
|3 Volltext
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