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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1016/j.jplph.2018.05.001
|2 doi
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|a pubmed24n0949.xml
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|a (DE-627)NLM284884111
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|a (NLM)29842998
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|a (PII)S0176-1617(18)30174-3
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Mateluna, Patricio
|e verfasserin
|4 aut
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|a Involvement of aquaporin NIP1;1 in the contrasting tolerance response to root hypoxia in Prunus rootstocks
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|c 2018
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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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|2 rdacarrier
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|a Date Completed 26.10.2018
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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 © 2018 Elsevier GmbH. All rights reserved.
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|a Prunus species have been classified as moderately sensitive to root hypoxia, but with a certain intrageneric tolerance degree to oxygen deficiency. Previously, RNA-seq analysis described the transcriptomic reconfiguration of two Prunus rootstocks contrasting to root hypoxia, which included the shift from aerobic to anaerobic metabolism. Here, we studied the relationship between lactate accumulation and the functionality of an aquaporin differentially expressed in 'Mariana 2624', a plum-based (Prunus cerasifera x Prunus munsoniana) rootstock tolerant to root hypoxia stress, and 'Mazzard F12/1', a cherry-based (Prunus avium) rootstock sensitive to root hypoxia stress. In the root hypoxia-sensitive rootstock, higher levels of lactate and LDH1 gene expression were found in roots exposed to oxygen deprivation. Concomitantly, we detected an increase in the mRNA abundance of Prunus spp. NIP1;1, a putative lactic acid transporter. Intriguingly, the high expression of PruavNIP1;1 is not linked to a lower lactic acid content in the roots of 'Mazzard F12/1'. To study this phenomenon, we calculated the force required for the transit of a lactic acid molecule through Prunus spp. NIP1;1 channels. Comparing the calculated forces, we identified steric hindrances in PruavNIP1;1 given by the residues Phe107 and Trp88 in the NPA region and ar/R filter, respectively. The functionality of both channels was corroborated by the restoration of the lactic acid transport and the differential lactic acid sensitive-phenotypes of the yeast strain Δjen1 complemented with PruavNIP1;1 and PrucxmNIP1;1. Our findings provide new insights into the mechanisms involved in determining hypoxia tolerance between closely related species, such as plum and cherry
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|a Journal Article
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|a Fermentative pathway
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|a Lactic acid
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|a NIP aquaporin
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|a Prunus
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|a Rootstock
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|a Waterlogging
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|a Aquaporins
|2 NLM
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|a Salvatierra, Ariel
|e verfasserin
|4 aut
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|a Solis, Simón
|e verfasserin
|4 aut
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| 700 |
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|a Nuñez, Gabriel
|e verfasserin
|4 aut
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| 700 |
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|a Pimentel, Paula
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of plant physiology
|d 1979
|g 228(2018) vom: 15. Sept., Seite 19-28
|w (DE-627)NLM098174622
|x 1618-1328
|7 nnns
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| 773 |
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|g volume:228
|g year:2018
|g day:15
|g month:09
|g pages:19-28
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|u http://dx.doi.org/10.1016/j.jplph.2018.05.001
|3 Volltext
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