Table 3.
Summary table explaining the impacts of melatonin on Cd uptake and translocation.
| Plant Names | Treatments | Impact on Cd in Subcellular Compartment | References |
|---|---|---|---|
| Nicotiana tabacum L. | 0, 25, 50, 100, and 250 μM melatonin; 100 μM Cd2+ for 7 d |
Cd content in leaves; H+-ATPase activity, IRT1, IRT2, Nramp1, HMA2, HMA3, HMA4 | [6] |
| Malva parviflora | 0, 15, 50, and 100 μM melatonin; 50 μM Cd2+ for 8 d |
Cd content in shoots | [18] |
|
Medicago sativa L. Arabidopsis |
0, 10, 50, and 200 μM melatonin; 100 μM Cd2+ for 1, 3 d |
Cd content in leaves; PCR2, Nramp6, PDR8, HMA4 | [19] |
| Solanum lycopersicum | 1 μM melatonin; 100 μM Cd2+ for 15 d |
Cd content in leaves; GSH and PCs | [61] |
| Brassica pekinensis (Lour.) Rupr. | 100 μM melatonin; 20 μM Cd2+ for 24 h |
Cd contents in roots and leaves; IRT1/2 | [68] |
| Solanum lycopersicum | 0, 25, 50, 100, 250, and 500 μM melatonin; 100 μM Cd2+ for 14 d |
Cd content in leaves; H+-ATPase activity, GSH and PCs; SlGSH1, SlPCS, SlMT2, and SlABC1 | [75] |
| Solanum lycopersicum | 100 μM melatonin; 100 μM Cd2+ for 15 d |
Cd content in leaves; Cys, γ-glutamyl cysteine, GSH and PCs | [76] |
| Brassica napus L. | 0, 50, and 100 μM melatonin; 20 μM Cd2+ for 5 d |
Cd content; H+-ATPase activity | [77] |
| Carthamus tinctorius L. | 100 μM melatonin; 100 μM Cd2+ for 21 d |
Cd content in roots, stems and leaves; PCs | [80] |
| Oryza sativa L. | 0, 50, 100, and 200 μM melatonin; 100 μM Cd2+ for 10 d |
Cd content in leaves; OsIRT1, OsIRT2, OsHMA2, OsHMA3, OsNramp1, OsNramp5, and OsLCT1 | [81] |
| Oryza sativa L. | 100 μM melatonin | Cd content in roots and shoots; Nramp1, Nramp5, IRT1, IRT2, HMA2, HMA3 | [83] |
| Raphanus sativus L. | 0, 10, 25, 50, 100, and 200 μM melatonin; 50 μM Cd2+ for 24 h |
Cd content in roots and leaves; PCS; MT, CAX4, ZIP12, HMA4, YSL2, YSL7 | [84] |
|
Malachium aquaticum,
Galinsoga parviflora |
0, 50, 100, 150, and 200 μM melatonin; 10 mg/L Cd for 40 d |
Cd content in leaves | [85] |
| Cyphomandra betacea | 0, 50, 100, 150, and 200 μM melatonin; 10 mg/L Cd for 40 d |
Cd contents in stems, leaves, and shoots | [86] |
IRT1, iron-regulated transporter1; IRT2, iron-regulated transporter2; Nramp1, natural resistance-associated macrophage protein1; Nramp5, natural resistance-associated macrophage protein5; HMA2, heavy metal ATPase2; HMA3, heavy metal ATPase3; HMA4, heavy metal ATPase4; PCR2, plant cadmium resistance2; PDR8, pleiotropic drug resistance8; GSH1, glutamate-cysteine ligase; PCS, phytochelatin synthase activity; MT, metallothionein; ABC1, ATP-binding cassette transporter1; LCT1, low-affinity cation transporter; CAX4, vacuolar cation/proton exchanger4; ZIP12, zinc-iron permease12; YSL2, yellow stripe-like transporter2; YSL7, yellow stripe-like transporter7.