Proline and Glycinebetaine Confer Cadmium Tolerance on Tobacco Bright Yellow-2 Cells by Increasing Ascorbate-Glutathione Cycle Enzyme Activities

Mohammad Muzahidul ISLAM; Md. Anamul HOQUE; Eiji OKUMA; Rayhanur JANNAT; Mst. Nasrin Akhter BANU; Md. Sarwar JAHAN; Yoshimasa NAKAMURA; Yoshiyuki MURATA

doi:10.1271/bbb.90305

This article has now been updated. Please use the final version.

Proline and Glycinebetaine Confer Cadmium Tolerance on Tobacco Bright Yellow-2 Cells by Increasing Ascorbate-Glutathione Cycle Enzyme Activities

Mohammad Muzahidul ISLAM, Md. Anamul HOQUE, Eiji OKUMA, Rayhanur JANNAT, Mst. Nasrin Akhter BANU, Md. Sarwar JAHAN, Yoshimasa NAKAMURA, Yoshiyuki MURATA

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Keywords: proline, glycinebetaine, cadmium stress, ascorbate-glutathione cycle, reactive oxygen species

JOURNAL FREE ACCESS Advance online publication

Article ID: 90305

DOI https://doi.org/10.1271/bbb.90305

The final version of this article is now available: Vol. 73 (2009) , No. 10 p.2320

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Abstract

Cadmium (Cd) stress significantly decreased membrane integrity and impaired the ascorbate (ASC)-glutathione (GSH) cycle in tobacco Bright Yellow-2 cells. Exogenous application of proline and glycinebetaine (betaine) significantly restored the membrane integrity and increased the activities of ASC-GSH cycle enzymes under Cd stress without maintenance of the rich ASC or GSH pools. Moreover, proline offered more efficient protection against Cd stress than betaine.

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