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Evaluation of oxidative stress tolerance in maize (Zea mays L.) seedlings in response to drought.
Indian J Biochem Biophys. 2011 Feb; 48(1):47-53.IJ

Abstract

Seedlings of selected six genotypes of maize (Zea mays L.) differing in their drought sensitivity (LM5 and Parkash drought-tolerant and PMH2, JH3459, Paras and LM14 as drought-sensitive) were exposed to 72 h drought stress at two leaf stage. Alterations in their antioxidant pools combined with activities of enzymes involved in defense against oxidative stress were investigated in leaves. Activities of some reactive oxygen species (ROS)-scavenging enzymes, catalase (CAT) and ascorbate peroxidase (APX) were enhanced in tolerant genotypes in response to drought stress. Superoxide dismutase (SOD) activity was significantly decreased in sensitive genotypes, but remained unchanged in tolerant genotypes under stress. Peroxidase (POX) activity was significantly induced in tolerant, as well as sensitive genotypes. Imposition of stress led to increase in H2O2 and malondialdehyde (MDA, a marker for lipid peroxidation) content in sensitive genotypes, while in tolerant genotypes no change was observed. Significant increase in glutathione content was observed in sensitive genotypes. Ascorbic acid pool was induced in both tolerant and sensitive genotypes, but induction was more pronounced in tolerant genotypes. Significant activation of antioxidative defence mechanisms correlated with drought-induced oxidative stress tolerance was the characteristic of the drought tolerant genotypes. These studies provide a mechanism for drought tolerance in maize seedlings.

Authors+Show Affiliations

Department of Biochemistry, Punjab Agricultural University, Ludhiana 141004, Punjab, India.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

21469602

Citation

Chugh, Vishal, et al. "Evaluation of Oxidative Stress Tolerance in Maize (Zea Mays L.) Seedlings in Response to Drought." Indian Journal of Biochemistry & Biophysics, vol. 48, no. 1, 2011, pp. 47-53.
Chugh V, Kaur N, Gupta AK. Evaluation of oxidative stress tolerance in maize (Zea mays L.) seedlings in response to drought. Indian J Biochem Biophys. 2011;48(1):47-53.
Chugh, V., Kaur, N., & Gupta, A. K. (2011). Evaluation of oxidative stress tolerance in maize (Zea mays L.) seedlings in response to drought. Indian Journal of Biochemistry & Biophysics, 48(1), 47-53.
Chugh V, Kaur N, Gupta AK. Evaluation of Oxidative Stress Tolerance in Maize (Zea Mays L.) Seedlings in Response to Drought. Indian J Biochem Biophys. 2011;48(1):47-53. PubMed PMID: 21469602.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Evaluation of oxidative stress tolerance in maize (Zea mays L.) seedlings in response to drought. AU - Chugh,Vishal, AU - Kaur,Narinder, AU - Gupta,Anil K, PY - 2011/4/8/entrez PY - 2011/4/8/pubmed PY - 2011/5/11/medline SP - 47 EP - 53 JF - Indian journal of biochemistry & biophysics JO - Indian J Biochem Biophys VL - 48 IS - 1 N2 - Seedlings of selected six genotypes of maize (Zea mays L.) differing in their drought sensitivity (LM5 and Parkash drought-tolerant and PMH2, JH3459, Paras and LM14 as drought-sensitive) were exposed to 72 h drought stress at two leaf stage. Alterations in their antioxidant pools combined with activities of enzymes involved in defense against oxidative stress were investigated in leaves. Activities of some reactive oxygen species (ROS)-scavenging enzymes, catalase (CAT) and ascorbate peroxidase (APX) were enhanced in tolerant genotypes in response to drought stress. Superoxide dismutase (SOD) activity was significantly decreased in sensitive genotypes, but remained unchanged in tolerant genotypes under stress. Peroxidase (POX) activity was significantly induced in tolerant, as well as sensitive genotypes. Imposition of stress led to increase in H2O2 and malondialdehyde (MDA, a marker for lipid peroxidation) content in sensitive genotypes, while in tolerant genotypes no change was observed. Significant increase in glutathione content was observed in sensitive genotypes. Ascorbic acid pool was induced in both tolerant and sensitive genotypes, but induction was more pronounced in tolerant genotypes. Significant activation of antioxidative defence mechanisms correlated with drought-induced oxidative stress tolerance was the characteristic of the drought tolerant genotypes. These studies provide a mechanism for drought tolerance in maize seedlings. SN - 0301-1208 UR - https://www.unboundmedicine.com/medline/citation/21469602/Evaluation_of_oxidative_stress_tolerance_in_maize__Zea_mays_L___seedlings_in_response_to_drought_ DB - PRIME DP - Unbound Medicine ER -