Abstract

Dianthus chinensis L. is a salt-tolerant ornamental plant. Root is the first and critical part of plant to encounter soli salinity. In order to elucidate H₂O₂ impact on root morphology and mitochondrial permeability transition as well as activities of antioxidant enzymes in root of Dianthus chinensis L., we treated seedling with H₂O₂ and DMTU under NaCl. The results revealed that change of H₂O₂ level under NaCl would negatively influence the root growth, as well as lower the value of mitochodrial membrane absorbance at 540 nm and the ratio of Cyt c/a. Meanwhile, SOD and POD under NaCl plus H₂O₂ and NaCl plus DMTU were far lower than those under NaCl alone.

Keywords:

Dianthus chinensis L, H₂O₂, mitochondrial membrane, root morphology, salt stress,

References

Competing interests

The authors have no competing interests.

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The authors have no competing interests.