Overexpression of phytochelatin synthase (AtPCS) in rice for tolerance to cadmium stress
Abstract: Phytoremediation is an important strategy adapted by plants to sequester and/or detoxify pollutants. Phytochelatins, a family of cysteine-rich thiol-reactive peptides, bind to various heavy metals and metalloids making them good candidates for phytoremediation. Phytochelatin synthase catalyses the final step in the biosynthesis of phytochelatins and can be used as a strategy to improve tolerance against heavy metals. In the present study, an AtPCS gene was overexpressed in rice following the in planta transformation approach. Stringent screening strategies were standardized to select putative transformants under a Cd stress of 125 μM at both seedling and plant levels. Molecular analysis by PCR in 18 tolerant plants confirmed the transgene integration and absence of Agrobacterium. Genomic Southern analysis further confirmed the integration of the T-DNA as a single copy. The stability of the T-DNA in the progeny of 5 selected T1 generation plants was confirmed by tolerance assay, molecular characterization and biochemical analysis for the reduced glutathione, phytochelatin content and lipid peroxidation. This strategy is discussed as a potential mechanism to enhance the tolerance of rice plants to Cd stress.
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Bibliographic citation
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Overexpression of phytochelatin synthase (AtPCS) in rice for tolerance to cadmium stress ; volume:66 ; number:6 ; year:2011 ; pages:1060-1073 ; extent:14
Biologia ; 66, Heft 6 (2011), 1060-1073 (gesamt 14)
- Creator
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Venkataramaiah, Nagaveni
Vudayagiri Ramakrishna, Sashidhar
Sreevathsa, Rohini
- DOI
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10.2478/s11756-011-0135-x
- URN
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urn:nbn:de:101:1-2409221717582.784951047013
- Rights
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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15.08.2025, 7:21 AM CEST
Data provider
Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.
Associated
- Venkataramaiah, Nagaveni
- Vudayagiri Ramakrishna, Sashidhar
- Sreevathsa, Rohini
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