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231223s2009 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2009.04.004
|2 doi
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|a pubmed24n0629.xml
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|a DE-627
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|e rakwb
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|a eng
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|a Zabotin, Alexey I
|e verfasserin
|4 aut
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|a Oligosaccharin and ABA synergistically affect the acquisition of freezing tolerance in winter wheat
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|c 2009
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|a Text
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|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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|a Date Completed 10.09.2009
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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 In this paper, we continue our studies of the previously discovered [O.A. Zabotina, D.A. Ayupova, O.N. Larskaya, O.N. Nikolaeva, G.I. Petrovicheva, A.I. Zabotin, Physiologically active oligosaccharides, accumulating in the roots of winter wheat during adaptation to low temperature, Russian Journal of Plant Physiology 45 (1998) 262] oligosaccharin (physiologically active oligosaccharide) GXAG, which stimulates the acquisition of freezing tolerance in winter varieties of Triticum aestivum L. The transient accumulation of GXAG in the tissues of winter wheat correlates with the temporal activation of cell wall glycosidases during the first hours of cold acclimation (2 degrees C). This finding suggests that the oligosaccharin is liberated as a result of the intensification of hemicellulose turnover. At low concentrations, GXAG initiates the acquisition of freezing tolerance in winter plants, in a manner similar to ABA, even at room temperature. The resultant effect of ABA and GXAG on the freezing tolerance of winter wheat depends on the sequence of pre-treatments with these two factors. When seedlings are pre-treated with GXAG a few hours before treatment with ABA, the effect is synergistic, and its impact depends on the duration of pre-treatment with GXAG. When ABA is applied first, the resultant effect on freezing tolerance is additive. The results obtained here lead to the conclusion that oligosaccharin, accumulating during the first hours of cold acclimation, functions as a partner of ABA during the initiation of freezing tolerance acquisition in winter plants. We hypothesize that GXAG increases cell receptivity to ABA signaling
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|a Journal Article
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|a Carbohydrates
|2 NLM
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|a Abscisic Acid
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|a Glycoside Hydrolases
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|a Barisheva, Tatyana S
|e verfasserin
|4 aut
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|a Trofimova, Oksana I
|e verfasserin
|4 aut
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|a Toroschina, Tatyana E
|e verfasserin
|4 aut
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|a Larskaya, Irina A
|e verfasserin
|4 aut
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|a Zabotina, Olga A
|e verfasserin
|4 aut
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|i Enthalten in
|t Plant physiology and biochemistry : PPB
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|g 47(2009), 9 vom: 01. Sept., Seite 854-8
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