biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 50:469-472, 2006 | DOI: 10.1007/s10535-006-0073-6

Deposition pattern of hydrogen peroxide in the leaf sheaths of rice under salt stress

S. G. Wi1, B. Y. Chung1,*, J.-H. Kim1, K.-S. Lee2, J.-S. Kim1
1 Division of Radiation Application Research, Korea Atomic Energy Research Institute, Daejeon, Korea
2 Genetics and Breeding Division, National Institute of Crop Science, Suwon, Korea

Deposition pattern of hydrogen peroxide (H2O2) under salt stress (100 mM NaCl) was examined cytochemically in rice (Oryza sativa L. cv. Pokkali) through the reaction of H2O2 with cerium chloride (CeCl3) to produce electron dense precipitates of cerium perhydroxide. The distribution pattern of cerium perhydroxide precipitates in leaf sheath was considerably different from other parts of rice under salinity stress. Cerium perhydroxide precipitates were mainly accumulated on the tonoplast of leaf sheath under salinity, although they were localized on the cell wall and plasma membrane in all other tissues such as leaf blade and root.

Keywords: cerium chloride; cytochemistry; energy dispersive X-ray analysis; Oryza sativa; transmission electron microscopy
Subjects: Centaurium pulchellum; cerium chloride; nutrient medium, Murashige and Skoog; Oryza sativa; reactive oxygen species (ROS); rice; salt, salinity stress

Received: November 29, 2004; Accepted: October 11, 2005; Published: September 1, 2006  Show citation

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Wi, S.G., Chung, B.Y., Kim, J.-H., Lee, K.-S., & Kim, J.-S. (2006). Deposition pattern of hydrogen peroxide in the leaf sheaths of rice under salt stress. Biologia plantarum, 50(3), 469-472. doi: 10.1007/s10535-006-0073-6
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