Table 1.
The influence of biotic and abiotic stress factors on SA content in roots.
| Plant Species | Stress Factor Type | Stress Factor 1 | SA Level | Reference |
|---|---|---|---|---|
| Biotic stress | ||||
| Cucumus sativus L. | Necrotrophic fungus | Rhizoctonia solani | ↑ | [37] |
| Zea mays L. | Root herbivore | Diabrotica virgifera larvae | ↑ | [42] |
| Arabidopsis thaliana L. (Bur-0) | Biotrophic protist | Plasmodiophora brassicae | ↑ | [43] |
| Arabidopsis thaliana L. (Col-0) | Biotrophic protist | Plasmodiophora brassicae | - | [43] |
| Abiotic stress | ||||
| Cassia tora L. | Aluminium | Al (10–50 µM) | ↑ (RT) | [44] |
| Glycine max L. | Aluminium | AlCl3 (30 μM) | ↑ (RT) | [45] |
| Hordeum vulgare L. | Heavy metal | CdCl2 (25 µM) | ↑ (F) | [46] |
| Triticum aestivum L. | Heavy metal | Cd(NO3)2 (250 µM) | ↑ (F) | [47] |
| Arabidopsis thaliana L. (Col) | Heavy metal | CdCl2 (50 μM) | ↑ | [48] |
| Oryza sativa L. | Chilling | 5 °C | ↑ (F + C) | [49] |
| Cucumis sativus L. | Chilling | 8 °C | ↑ (F + C) | [50] |
| Hordeum spontaneum L. | Drought | PEG 6000 (−0.75 to −1.5 MPa) | ↑ | [51] |
| Hordeum vulgare L. | Drought | PEG 6000 (−0.5 MPa) | ↑ | [52] |
| Scutellaria baicalensis Georgi | Drought | PEG 6000 (15%) | ↓ (F + T) | [53] |
| Scutellaria baicalensis Georgi | Salt | NaCl (150 mM) | ↑ (F + T) | [53] |
| Hordeum vulgare L. | UV-B radiation | UV-B (0.84 W m−2) | ↑ | [52] |
| Arabidopsis thaliana L. (Col-0) | Iron deficiency | –Fe (0 µM) | ↑ (F) | [54] |
| Gossypium hirsutum L. | Nitrogen deficiency | –N (0 µM) | ↑ | [55] |
| Solanum lycopersicum L. | Alkalinity | pH 9.0 buffer | ↑ | [56] |
1 Biotic stress factors are limited to soil-borne pathogens. PEG, polyethylene glycol; RT, root tip; F, free SA; C, conjugated SA; T, total SA; “↑”, increase; “↓”, decrease; “-”, no difference.