dc.contributor.author |
El Mahi, Houda |
dc.contributor.author |
Pérez Hormaeche, Javier |
dc.contributor.author |
Luca, Anna de |
dc.contributor.author |
Villalta, Irene |
dc.contributor.author |
Espartero, Joaquín |
dc.contributor.author |
Gámez Arjona, Francisco |
dc.contributor.author |
Fernández, José Luis |
dc.contributor.author |
Bundó Barberà, Mireia |
dc.contributor.author |
Mendoza, Imelda |
dc.contributor.author |
Mieulet, Delphine |
dc.contributor.author |
Lalanne, Eric |
dc.contributor.author |
Lee, Sang-Yeol |
dc.contributor.author |
Yun, Dae-Jin |
dc.contributor.author |
Guiderdoni, Emmanuel |
dc.contributor.author |
Aguilar, Manuel |
dc.contributor.author |
Leidi, Eduardo O. |
dc.contributor.author |
Pardo, José M. |
dc.contributor.author |
Quintero, Francisco J. |
dc.date |
2019 |
dc.date.accessioned |
2021-09-13T13:36:01Z |
dc.date.available |
2021-09-13T13:36:01Z |
dc.date.issued |
2021-09-13 |
dc.identifier |
https://ddd.uab.cat/record/218126 |
dc.identifier |
10.1104/pp.19.00324 |
dc.identifier |
oai:ddd.uab.cat:218126 |
dc.identifier |
30992336 |
dc.identifier |
85067219573 |
dc.identifier |
1532-2548v180n2p1046 |
dc.identifier |
000470086100039 |
dc.identifier |
59129350 |
dc.identifier |
oai:egreta.uab.cat:publications/107380bc-79af-41fc-81b9-c6be134ddd7b |
dc.identifier.uri |
http://hdl.handle.net/2072/502858 |
dc.format |
application/pdf |
dc.language |
eng |
dc.publisher |
|
dc.relation |
info:eu-repo/grantAgreement/MINECO/BIO2016-81957-REDT |
dc.relation |
info:eu-repo/grantAgreement/MINECO/BIO201570946-R |
dc.relation |
info:eu-repo/grantAgreement/MINECO/BFU2015-64671-R |
dc.relation |
Plant physiology ; Vol. 180, issue 2 (June 2019), p. 1046-1065 |
dc.rights |
open access |
dc.rights |
Tots els drets reservats. |
dc.rights |
https://rightsstatements.org/vocab/InC/1.0/ |
dc.title |
A critical role of sodium flux via the plasma membrane na+/h+ exchanger sos1 in the salt tolerance of rice |
dc.type |
Article |
dc.description.abstract |
Rice (Oryza sativa) stands among the world's most important crop species. Rice is salt sensitive, and the undue accumulation of sodium ions (Na+) in shoots has the strongest negative correlation with rice productivity under long-term salinity. The plasma membrane Na+/H+ exchanger protein Salt Overly Sensitive 1 (SOS1) is the sole Na+ efflux transporter that has been genetically characterized to date. Here, the importance of SOS1-facilitated Na+ flux in the salt tolerance of rice was analyzed in a reversegenetics approach. A sos1 loss-of-function mutant displayed exceptional salt sensitivity that was correlated with excessive Na+ intake and impaired Na+ loading into the xylem, thus indicating that SOS1 controls net root Na+ uptake and long-distance Na+ transport to shoots. The acute Na+ sensitivity of sos1 plants at low NaCl concentrations allowed analysis of the transcriptional response to sodicity stress without effects of the osmotic stress intrinsic to high-salinity treatments. In contrast with that in the wild type, sos1 mutant roots displayed preferential down-regulation of stress-related genes in response to salt treatment, despite the greater intensity of stress experienced by the mutant. These results suggest there is impaired stress detection or an inability to mount a comprehensive response to salinity in sos1. In summary, the plasma membrane Na+/H+ exchanger SOS1 plays a major role in the salt tolerance of rice by controlling Na+ homeostasis and possibly contributing to the sensing of sodicity stress. |