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/ http://irep.iium.edu.my/290/ http://irep.iium.edu.my/290/ http://irep.iium.edu.my/290/1/Phang_et_al_2010.pdf

id	iium-290
recordtype	eprints
spelling	iium-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 PeerReviewed 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
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
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/ http://irep.iium.edu.my/290/ http://irep.iium.edu.my/290/ http://irep.iium.edu.my/290/1/Phang_et_al_2010.pdf
first_indexed	2023-09-18T20:07:25Z
last_indexed	2023-09-18T20:07:25Z
_version_	1777407251348193280

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

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