@misc{10481/75165,
year = {2022},
month = {5},
url = {http://hdl.handle.net/10481/75165},
abstract = {Salt tolerance is a target trait in plant science and tomato breeding programs. Wild tomato
accessions have been often explored for this purpose. Since shoot Na+/K+ is a key component of
salt tolerance, RNAi-mediated knockdown isogenic lines obtained for Solanum galapagense alleles
encoding both class I Na+ transporters HKT1;1 and HKT1;2 were used to investigate the silencing
effects on the Na and K contents of the xylem sap, and source and sink organs of the scion, and their
contribution to salt tolerance in all 16 rootstock/scion combinations of non-silenced and silenced
lines, under two salinity treatments. The results show that SgHKT1;1 is operating differently from
SgHKT1;2 regarding Na circulation in the tomato vascular system under salinity. A model was built
to show that using silenced SgHKT1;1 line as rootstock would improve salt tolerance and fruit quality
of varieties carrying the wild type SgHKT1;2 allele. Moreover, this increasing effect on both yield
and fruit soluble solids content of silencing SgHKT1;1 could explain that a low expressing HKT1;1
variant was fixed in S. lycopersicum during domestication, and the paradox of increasing agronomic
salt tolerance through silencing the HKT1;1 allele from S. galapagense, a salt adapted species.},
organization = {Spanish Ministerio de Ciencia e Innovacion/Agencia Estatal de Investigacion	AGL2017-82452-C2-1R	
AGL2017-82452-C2-2R	
MCIN/AEI/10.13039/501100011033},
organization = {European Commission	101000716},
organization = {FEDER "Una manera de hacer Europa"	JAEINT_19_00566},
publisher = {MDPI},
keywords = {Tomato},
keywords = {S. cheesmaniae},
keywords = {Salt tolerance},
keywords = {Rootstock breeding},
keywords = {Yield},
keywords = {Fruit quality},
keywords = {K+ and Na+ homeostasis},
keywords = {Long-distance transport},
title = {HKT1;1 and HKT1;2 Na+ Transporters from Solanum galapagense Play Different Roles in the Plant Na+ Distribution under Salinity},
doi = {10.3390/ijms23095130},
author = {Asins, Maria J. and Espinosa, Jesús and González Fernández, Paloma and Traverso Gutiérrez, José Ángel and Belver, Andrés},
}