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Expressing the yeast HAL1 gene in tomato increases fruit yield and enhances K + /Na + selectivity under salt stress
Author(s) -
Rus A. M.,
Estañ M. T.,
Gisbert C.,
GarciaSogo B.,
Serrano R.,
Caro M.,
Moreno V.,
Bolarín M. C.
Publication year - 2001
Publication title -
plant, cell and environment
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.646
H-Index - 200
eISSN - 1365-3040
pISSN - 0140-7791
DOI - 10.1046/j.1365-3040.2001.00719.x
Subject(s) - lycopersicon , salt (chemistry) , yeast , transgene , selectivity , genetically modified crops , yield (engineering) , horticulture , botany , chemistry , biology , solanaceae , gene , biochemistry , materials science , metallurgy , catalysis
The yeast HAL1 gene facilitates K + /Na + selectivity and salt tolerance of cells. Ectopic expression of HAL1 in transgenic tomato ( Lycopersicon esculentum Mill.) plants minimized the reduction in fruit production caused by salt stress. Maintenance of fruit production by transgenic plants was correlated with enhanced growth under salt stress of calli derived from the plants. The HAL1 transgene enhanced water and K + contents in both leaf calli and leaves in the presence of salt, which indicates that HAL1 functions in plants using a similar mechanism to that in yeast, namely by facilitating K + /Na + selectivity under salt stress.