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008 | 241216b |||||||| |||| 00| 0 eng d | ||
022 | _a0176-1617 | ||
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_aMSU _bEnglish _cMSU _erda |
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050 | 0 | 0 | _aQK711.2 JOU |
100 | 1 |
_aPandolfi, Camilla _eauthor |
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245 | 1 | 0 |
_aAcclimation improves salt stress tolerance in Zea mays plants _ccreated by Camilla Pandolfi, Elisa Azzarello, Stefano Mancuso and Sergey Shabala |
264 | 1 |
_aAmsterdam: _bElsevier GmbH, _c2016. |
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336 |
_2rdacontent _atext _btxt |
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337 |
_2rdamedia _aunmediated _bn |
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338 |
_2rdacarrier _avolume _bnc |
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440 |
_aJournal of plant physiology _vVolume 201 |
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520 | 3 | _aPlants exposure to low level salinity activates an array of processes leading to an improvement of plant stress tolerance. Although the beneficial effect of acclimation was demonstrated in many herbaceous species, underlying mechanisms behind this phenomenon remain poorly understood. In the present study we have addressed this issue by investigating ionic mechanisms underlying the process of plant acclimation to salinity stress in Zea mays. Effect of acclimation were examined in two parallel sets of experiments: a growth experiment for agronomic assessments, sap analysis, stomatal conductance, chlorophyll content, and confocal laser scanning imaging; and a lab experiment for in vivo ion flux measurements from root tissues. Being exposed to salinity, acclimated plants (1) retain more K+ but accumulate less Na+ in roots; (2) have better vacuolar Na+ sequestration ability in leaves and thus are capable of accumulating larger amounts of Na+ in the shoot without having any detrimental effect on leaf photochemistry; and (3) rely more on Na+ for osmotic adjustment in the shoot. At the same time, acclimation affect was not related in increased root Na+ exclusion ability. It appears that even in a such salt-sensitive species as maize, Na+ exclusion from uptake is of a much less importance compared with the efficient vacuolar Na+ sequestration in the shoot. | |
650 |
_aAcclimation _vIon channels _xPrining salinity |
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700 | 1 |
_aAzzarello, Elisa _eco-author |
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700 | 1 |
_aMancuso, Stefano _eco-author |
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700 | 1 |
_aShabala, Sergey _eco-author |
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856 | _uhttps://doi.org/10.1016/j.jplph.2016.06.010 | ||
942 |
_2lcc _cJA |
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_c168886 _d168886 |