Hypoxia stress in the root-zone is thought be a major determinant in the adverse effect of O_2 deficiency in hydroponic culture and root-cushion formation in substrate culture on plant species.

• 无土栽培中营养液供氧不足或基质根垫的形成均会造成低氧胁迫,影响植株正常生长发育,成为困扰无土栽培技术大规模应用于生产的限制性因子,提高作物在低氧胁迫下的耐性和抗性对无土栽培生产意义重大。