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Correlation of growth inhibition with accumulation of Pb in cell wall and changes in response to oxidative stress in Arabidopsis thaliana seedlings

Uptake of the non-essential element, lead (Pb), by 7-days-old Arabidopsis thaliana seedlings caused inhibition of root growth. Pb accumulated mainly in the root and only a small proportion of the total uptake was transported to the shoot. At the ultrastructural level, Pb was localized mainly in the...

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Main Authors: Phang, Ing Chia, Leung, David W. M., Taylor, H. Harry, Burritt, David J.
Format: Article
Language:English
Published: Springer Science+Business Media B.V. 2010
Subjects:
Q Science (General)
Online Access:http://irep.iium.edu.my/290/1/Phang_et_al_2010.pdf
http://irep.iium.edu.my/290/
http://dx.doi.org/10.1007/s10725-010-9527-0
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spelling my.iium.irep.2902011-12-20T01:03:22Z http://irep.iium.edu.my/290/ Correlation of growth inhibition with accumulation of Pb in cell wall and changes in response to oxidative stress in Arabidopsis thaliana seedlings Phang, Ing Chia Leung, David W. M. Taylor, H. Harry Burritt, David J. Q Science (General) Uptake of the non-essential element, lead (Pb), by 7-days-old Arabidopsis thaliana seedlings caused inhibition of root growth. Pb accumulated mainly in the root and only a small proportion of the total uptake was transported to the shoot. At the ultrastructural level, Pb was localized mainly in the cell walls, intercellular spaces and vacuoles, which may serve to minimize Pb toxicity to vital functions of the cytosol. Pb exposure induced the generation of reactive oxygen species (ROS) and increased the level of lipid hydroperoxide. These changes were accompanied by up-regulation of the activities of antioxidative enzymes in a dose-dependent manner. Although no major destructive changes to the cytoplasm and vital organelles were observed, it is postulated that at least part of the cost of Pb exposure to A. thaliana seedlings is reflected in reduced root growth associated with increased free radical production by cell wall-accumulated Pb. Springer Science+Business Media B.V. 2010-09-22 Article REM application/pdf en http://irep.iium.edu.my/290/1/Phang_et_al_2010.pdf Phang, Ing Chia and Leung, David W. M. and Taylor, H. Harry and Burritt, David J. (2010) Correlation of growth inhibition with accumulation of Pb in cell wall and changes in response to oxidative stress in Arabidopsis thaliana seedlings. Plant Growth Regulation, 64 (1). pp. 17-25. ISSN 0167-6903 http://dx.doi.org/10.1007/s10725-010-9527-0 doi:10.1007/s10725-010-9527-0
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
language English
topic Q Science (General)
spellingShingle Q Science (General)
Phang, Ing Chia
Leung, David W. M.
Taylor, H. Harry
Burritt, David J.
Correlation of growth inhibition with accumulation of Pb in cell wall and changes in response to oxidative stress in Arabidopsis thaliana seedlings
description Uptake of the non-essential element, lead (Pb), by 7-days-old Arabidopsis thaliana seedlings caused inhibition of root growth. Pb accumulated mainly in the root and only a small proportion of the total uptake was transported to the shoot. At the ultrastructural level, Pb was localized mainly in the cell walls, intercellular spaces and vacuoles, which may serve to minimize Pb toxicity to vital functions of the cytosol. Pb exposure induced the generation of reactive oxygen species (ROS) and increased the level of lipid hydroperoxide. These changes were accompanied by up-regulation of the activities of antioxidative enzymes in a dose-dependent manner. Although no major destructive changes to the cytoplasm and vital organelles were observed, it is postulated that at least part of the cost of Pb exposure to A. thaliana seedlings is reflected in reduced root growth associated with increased free radical production by cell wall-accumulated Pb.
format Article
author Phang, Ing Chia
Leung, David W. M.
Taylor, H. Harry
Burritt, David J.
author_facet Phang, Ing Chia
Leung, David W. M.
Taylor, H. Harry
Burritt, David J.
author_sort Phang, Ing Chia
title Correlation of growth inhibition with accumulation of Pb in cell wall and changes in response to oxidative stress in Arabidopsis thaliana seedlings
title_short Correlation of growth inhibition with accumulation of Pb in cell wall and changes in response to oxidative stress in Arabidopsis thaliana seedlings
title_full Correlation of growth inhibition with accumulation of Pb in cell wall and changes in response to oxidative stress in Arabidopsis thaliana seedlings
title_fullStr Correlation of growth inhibition with accumulation of Pb in cell wall and changes in response to oxidative stress in Arabidopsis thaliana seedlings
title_full_unstemmed Correlation of growth inhibition with accumulation of Pb in cell wall and changes in response to oxidative stress in Arabidopsis thaliana seedlings
title_sort correlation of growth inhibition with accumulation of pb in cell wall and changes in response to oxidative stress in arabidopsis thaliana seedlings
publisher Springer Science+Business Media B.V.
publishDate 2010
url http://irep.iium.edu.my/290/1/Phang_et_al_2010.pdf
http://irep.iium.edu.my/290/
http://dx.doi.org/10.1007/s10725-010-9527-0
_version_ 1643604592039034880
score 13.211869

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