Calcium Mitigates Arsenic Toxicity in Rice Seedlings by Reducing Arsenic Uptake and Modulating the Antioxidant Defense and Glyoxalase Systems and Stress Markers
Joint Authors
Hasanuzzaman, Mirza
Fujita, Masayuki
Nahar, Kamrun
Rahman, Anisur
Mostofa, Mohammad Golam
Alam, Md. Mahabub
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-12-20
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
The effect of exogenous calcium (Ca) on hydroponically grown rice seedlings was studied under arsenic (As) stress by investigating the antioxidant and glyoxalase systems.
Fourteen-day-old rice (Oryza sativa L.
cv.
BRRI dhan29) seedlings were exposed to 0.5 and 1 mM Na2HAsO4 alone and in combination with 10 mM CaCl2 (Ca) for 5 days.
Both levels of As caused growth inhibition, chlorosis, reduced leaf RWC, and increased As accumulation in the rice seedlings.
Both doses of As in growth medium induced oxidative stress through overproduction of reactive oxygen species (ROS) by disrupting the antioxidant defense and glyoxalase systems.
Exogenous application of Ca along with both levels of As significantly decreased As accumulation and restored plant growth and water loss.
Calcium supplementation in the As-exposed rice seedlings reduced ROS production, increased ascorbate (AsA) content, and increased the activities of monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR), catalase (CAT), glutathione peroxidase (GPX), superoxide dismutase (SOD), and the glyoxalase I (Gly I) and glyoxalase II (Gly II) enzymes compared with seedlings exposed to As only.
These results suggest that Ca supplementation improves rice seedlings tolerance to As-induced oxidative stress by reducing As uptake, enhancing their antioxidant defense and glyoxalase systems, and also improving growth and physiological condition.
American Psychological Association (APA)
Rahman, Anisur& Mostofa, Mohammad Golam& Alam, Md. Mahabub& Nahar, Kamrun& Hasanuzzaman, Mirza& Fujita, Masayuki. 2015. Calcium Mitigates Arsenic Toxicity in Rice Seedlings by Reducing Arsenic Uptake and Modulating the Antioxidant Defense and Glyoxalase Systems and Stress Markers. BioMed Research International،Vol. 2015, no. 2015, pp.1-12.
https://search.emarefa.net/detail/BIM-1055105
Modern Language Association (MLA)
Rahman, Anisur…[et al.]. Calcium Mitigates Arsenic Toxicity in Rice Seedlings by Reducing Arsenic Uptake and Modulating the Antioxidant Defense and Glyoxalase Systems and Stress Markers. BioMed Research International No. 2015 (2015), pp.1-12.
https://search.emarefa.net/detail/BIM-1055105
American Medical Association (AMA)
Rahman, Anisur& Mostofa, Mohammad Golam& Alam, Md. Mahabub& Nahar, Kamrun& Hasanuzzaman, Mirza& Fujita, Masayuki. Calcium Mitigates Arsenic Toxicity in Rice Seedlings by Reducing Arsenic Uptake and Modulating the Antioxidant Defense and Glyoxalase Systems and Stress Markers. BioMed Research International. 2015. Vol. 2015, no. 2015, pp.1-12.
https://search.emarefa.net/detail/BIM-1055105
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1055105