Physiology and Molecular Biology of Stress ... - KHAM PHA MOI

Metabolic Engineering for Stress Tolerance
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Table 3.
Some examples of genes utilized in pathway engineering to improve
salinity and drought stress tolerance in plants
Gene Gene action Species Phenotypic References
expression
mt1D Mannitol-1- Tobacco, Increased plant Tarczynski et al.
phosphate dehydro Arabidopsis height and fresh (1993) ;
genase (mannitol weight under Thomas et al.
synthesis) salinity stress (1995)
Increased
germination under
salinity stress
m6pr Mannose-6-phosphate Arabidopsis Increased salt Zhifang and
reductase (mannitol tolerance Loescher (2003)
synthesis)
IMT1 Myo-inositol O-methyl Tobacco Performed better Sheveleva et al.
transferase (D-ononitol under drought and (1997)
synthesis)
salinity stress
otsA, Trehalose-6-phosphate Tobacco, Improved growth Goddjin and Van
otsB synthase, Trehalose-6- Rice under stress Dun (1999);
phosphate Garg et al (2002)
phosphatase
TPS1 Trehalose synthesis Tobacco Stunted growth, Romero et al
improved drought (1997)
tolerance
CodA Choline oxidase Arabidopsis Seedlings tolerant Alia et al. (1998);
(glycine betaine Rice of salinity stress Hayashi et al.
synthesis) and increased (1997);
germination Huang et al.
under cold (2000);
Increased tolerance Sakamoto et al.
to salinity and cold (1998)
GS2 Chloroplastic glutamine Rice Increased salinity Hoshida et al.
synthetase resistance and chilling (2000)
tolerance
p5cs Pyrroline carboxylate Rice Increased biomass Zhu et al. (1998)
synthetase (proline
production under
synthesis)
drought and salinity
stress