TABLE 1.
The main genes involved in Se uptake, transport, and metabolism in plant.
| Function | Gene category | Gene name | References |
| Se uptake transport protein | |||
| H2SeO3 uptake by root | Silicon influx transporter | OsNIP2;1 | Zhao X. et al., 2010 |
| HSeO3– uptake by root | Phosphate transporter | OsPT2 | Zhang L. et al., 2014 |
| Se(VI) uptake by root | Sulfate transporter | AtSULTR1;2 | Ei et al., 2007 |
| Selenite uptake and transport by root | Phosphate transporter | OsPT8 | Song et al., 2017 |
| Selenite and Pi uptake in root of tobacco | Phosphate transporter | NtPT2 | Jia et al., 2018 |
| SeMet translocation from roots to shoots and grain | Rice peptide transporter (PTR) | NRT1.1B | Zhang et al., 2019 |
| Key enzymes of Se metabolism pathway | |||
| Catalyze Se(VI) into APSe | ATP sulfurylase | APS | Sors et al., 2005 |
| Catalyze APSe into Se(IV) | APS reductase | APR | Sors et al., 2005 |
| Se(IV) reduction to Se(II-) | Sulfite reductase enzyme | SiR | White, 2018 |
| Catalyze Se(IV) into SeCys | Selenomethyltransferase | SMT | Chauhan et al., 2019 |
| Catalyze the synthesis of other organic species from Se-Cys | Cystathionine-γ-synthase | CGS | White, 2018 |