Table 2.
Transgenic plants over-expressing genes involved in biosynthesis and/or signaling of jasmonates.
| Transgenic plants | Donor | Gene/transcript | Regulation in different plant attributes | Reference |
|---|---|---|---|---|
| Potato (Solanum tuberosum L.) | Flax (Linum usitatissimum) | Allene oxide synthase (AOS) | Transgenic plants had 6–12-fold higher level of JA than the wild plants mechanical wounding. However, transgenic plants with increased level of JA did not show changes in water state or in the expression of water stress-responsive genes | Harms et al., 1995 |
| Arabidopsis thaliana | A. thaliana | JASMONATE-ASSOCIATED1 (JAS1) | The roots of transgenic plants overexpressing a gene of unknown function were longer than those of wild-type plants | Yan et al., 2007 |
| Soybean [Glycine max (L.) Merrill.] | Brassica campestris | NTR1 | Transformed plants showed 2–2.5-fold higher level of MeJA, better plant height, lateral root development, but less primary root elongation as compared to the wild-type plants | Xue and Zhang, 2007 |
| Arabidopsis thaliana | Escherichia coli | Jasmonic acid carboxyl methyltransferase (JMT) | Transgenic plants showed 3-fold increase inendogenous MeJAlevel but no change in JA was observed. In addition, more resistance against the virulent fungus Botrytis cinerea was observed in transgenic plants | Seo et al., 2001 |
| Panax ginseng | A. thaliana | Arabidopsis jasmonic acid carboxyl methyltransferase (AtJMT) | Transgenic plants showed high expression of PgSS1,PgSE1, and PgDDS involved in ginsenoside biosynthetic pathways as well as a MeJA-responsive gene, PgPR10-2 | Kim et al., 2012 |
| Rice (Oryza sativa L.) | A. thaliana | AtJMT | Seven different genes were regulated in both Ubi1:AtJMT and drought-treated wild plant. Two genes, OsSDR and OsJMT1 were involved in MeJA and ABA biosynthesis, respectively | Kim et al., 2009 |
| Potato (S. tuberosum L.) | A. thaliana | JMT | Increased tuber yield and size in transgenic potato plants. In addition an increase in JA, MeJA and tuberonic acid (TA) levels and expression of allene oxide cyclase (AOC) and proteinase inhibitor II (PINII) genes were also observed in transgenic plants as compared to the control plants | Sohn et al., 2011 |
| Tobacco (Nicotianatobacum L.) | - - - - - - - - | By silencing monogalactosyldiacylglycerol (MGDG) | In response to wounding, the transgenic plants produced lower levels of JA than wild-type plants. In addition, lipoxygenase (LOX1), AOC, hydroperoxidelyase (HPL) and proteinase inhibitor (PI-I and PI-II) were strongly diminished in transgenic plants while they were highly activated in wild-type plants on mechanical wounding | JunBin, 2009 |