Lead Induced Oxidative Stress and Alteration in the Activities of Antioxidative Enzymes in Rice Shoots

Physiological responses of Oryza sativa L. to lead excess (10 and 50 μM) were studied in hydroponic system after 48- and 96-h exposure. The Pb accumulation in stressed rice shoots was concomitant with increased metal concentration in the growth media and duration of exposure. Pb stress resulted in...

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Main Authors:	Thakur, Sveta, Singh, Lakhveer, Zularisam, A. W., Mimi Sakinah, A. M., M. F. M., Din
Format:	Article
Language:	English
Published:	Springer 2017
Subjects:	QK Botany
Online Access:	http://umpir.ump.edu.my/id/eprint/15416/ http://umpir.ump.edu.my/id/eprint/15416/ http://umpir.ump.edu.my/id/eprint/15416/ http://umpir.ump.edu.my/id/eprint/15416/1/ftech-2017-thakur-%20Lead%20Induced%20Oxidative%20Stress%20and%20Alteration%20in%20the%20Activities1.pdf

id	ump-15416
recordtype	eprints
spelling	ump-154162018-02-20T07:25:22Z http://umpir.ump.edu.my/id/eprint/15416/ Lead Induced Oxidative Stress and Alteration in the Activities of Antioxidative Enzymes in Rice Shoots Thakur, Sveta Singh, Lakhveer Zularisam, A. W. Mimi Sakinah, A. M. M. F. M., Din QK Botany Physiological responses of Oryza sativa L. to lead excess (10 and 50 μM) were studied in hydroponic system after 48- and 96-h exposure. The Pb accumulation in stressed rice shoots was concomitant with increased metal concentration in the growth media and duration of exposure. Pb stress resulted in enhanced lipid peroxidation accompanied by altered activities of antioxidants. A substantial increase in α-tocopherol content of the Pb stressed rice shoots was observed suggesting its important role as an antioxidant. Among the antioxidant enzymes studied, the activities of superoxide dismutase (SOD) and ascorbate peroxidase (APX) increased in Pb-treated rice shoots, while that of catalase (CAT) was declined. Activity of an important ascorbate-glutathione cycle enzyme glutathione reductase (GR) also increased significantly in Pb-treated shoots. Results suggest that Pb toxicity results in induction of oxidative stress in rice shoots and α-tocopherol accumulation and upregulation of SOD, APX, and GR activities play an effective role in acclimatization to Pb stress. Springer 2017 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/15416/1/ftech-2017-thakur-%20Lead%20Induced%20Oxidative%20Stress%20and%20Alteration%20in%20the%20Activities1.pdf Thakur, Sveta and Singh, Lakhveer and Zularisam, A. W. and Mimi Sakinah, A. M. and M. F. M., Din (2017) Lead Induced Oxidative Stress and Alteration in the Activities of Antioxidative Enzymes in Rice Shoots. Biologia Plantarum, 61 (3). pp. 595-598. ISSN 0006-3134 (Print); 1573-8264 (Online) http://dx.doi.org/10.1007/s10535-016-0680-9 doi: 10.1007/s10535-016-0680-9
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	QK Botany
spellingShingle	QK Botany Thakur, Sveta Singh, Lakhveer Zularisam, A. W. Mimi Sakinah, A. M. M. F. M., Din Lead Induced Oxidative Stress and Alteration in the Activities of Antioxidative Enzymes in Rice Shoots
description	Physiological responses of Oryza sativa L. to lead excess (10 and 50 μM) were studied in hydroponic system after 48- and 96-h exposure. The Pb accumulation in stressed rice shoots was concomitant with increased metal concentration in the growth media and duration of exposure. Pb stress resulted in enhanced lipid peroxidation accompanied by altered activities of antioxidants. A substantial increase in α-tocopherol content of the Pb stressed rice shoots was observed suggesting its important role as an antioxidant. Among the antioxidant enzymes studied, the activities of superoxide dismutase (SOD) and ascorbate peroxidase (APX) increased in Pb-treated rice shoots, while that of catalase (CAT) was declined. Activity of an important ascorbate-glutathione cycle enzyme glutathione reductase (GR) also increased significantly in Pb-treated shoots. Results suggest that Pb toxicity results in induction of oxidative stress in rice shoots and α-tocopherol accumulation and upregulation of SOD, APX, and GR activities play an effective role in acclimatization to Pb stress.
format	Article
author	Thakur, Sveta Singh, Lakhveer Zularisam, A. W. Mimi Sakinah, A. M. M. F. M., Din
author_facet	Thakur, Sveta Singh, Lakhveer Zularisam, A. W. Mimi Sakinah, A. M. M. F. M., Din
author_sort	Thakur, Sveta
title	Lead Induced Oxidative Stress and Alteration in the Activities of Antioxidative Enzymes in Rice Shoots
title_short	Lead Induced Oxidative Stress and Alteration in the Activities of Antioxidative Enzymes in Rice Shoots
title_full	Lead Induced Oxidative Stress and Alteration in the Activities of Antioxidative Enzymes in Rice Shoots
title_fullStr	Lead Induced Oxidative Stress and Alteration in the Activities of Antioxidative Enzymes in Rice Shoots
title_full_unstemmed	Lead Induced Oxidative Stress and Alteration in the Activities of Antioxidative Enzymes in Rice Shoots
title_sort	lead induced oxidative stress and alteration in the activities of antioxidative enzymes in rice shoots
publisher	Springer
publishDate	2017
url	http://umpir.ump.edu.my/id/eprint/15416/ http://umpir.ump.edu.my/id/eprint/15416/ http://umpir.ump.edu.my/id/eprint/15416/ http://umpir.ump.edu.my/id/eprint/15416/1/ftech-2017-thakur-%20Lead%20Induced%20Oxidative%20Stress%20and%20Alteration%20in%20the%20Activities1.pdf
first_indexed	2023-09-18T22:20:04Z
last_indexed	2023-09-18T22:20:04Z
_version_	1777415596749619200

Lead Induced Oxidative Stress and Alteration in the Activities of Antioxidative Enzymes in Rice Shoots

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