Table A1.
Genetic engineering of fatty acid desaturases and the effect on plant salt tolerance.
| Gene | Organism | Mutant/Overexpression | Salt Tolerance (Compared to WT) |
Cellular Changes (Compared to WT) |
Ref. |
|---|---|---|---|---|---|
| FAD2 | Arabidopsis thaliana | fad2 mutant | more sensitive during seed gemination and early seedling growth | lower polyunsaturation reduced Na+/H+ exchange activity higher Na+ accumulation in the cytoplasm of root cells |
[206] |
| FAD3 | Lycopersicon esculentum | sense overexpression | enhanced tolerance | increased 18:3 FA decreased 18:2 FA improved maintenance of membrane integrity higher SOD and APX activity in the chloroplast |
[207] |
| antisense overexpression | reduced tolerance | increased 18:2 FA decreased 18:3 FA |
[207] | ||
| FAD6 | Arabidopsis thaliana | fad6 mutant | reduced tolerance | greater Na+ accumulation lower K+ accumulation increased electrolyte leakage rate and malondialdehyde production (more severe oxidative damage) decreased activities of anti-oxidative enzymes |
[208] |
SOD: superoxide dismutase. APX: ascorbate peroxidase.