Activities of Antioxidant Enzymes in Six Rice (Oryza sativa L.) Varieties at Seedling Stage under Increasing Salinity Stress
Present study deals with the activities of antioxidant enzymes in six rice (Oryza sativa L.) varieties, namely Sadamota, Patnai, Dhoodeshwar, Ghewas, Gontrabidan-2 and Malabati, which were subjected to increasing salinity stress (0.05 M, 0.1 M and 0.15 M NaCl) from germination to seedling stage alo...
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Puspa Publishing House
2022-02-01
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| Series: | International Journal of Economic Plants |
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| Online Access: | https://ojs.pphouse.org/index.php/IJEP/article/view/4712 |
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| author | Rajkumar D. Gangadhar Rao S Tirupathi B. Gonzalez Rodriguez, H. |
| author_facet | Rajkumar D. Gangadhar Rao S Tirupathi B. Gonzalez Rodriguez, H. |
| author_sort | Rajkumar D. |
| collection | DOAJ |
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Present study deals with the activities of antioxidant enzymes in six rice (Oryza sativa L.) varieties, namely Sadamota, Patnai, Dhoodeshwar, Ghewas, Gontrabidan-2 and Malabati, which were subjected to increasing salinity stress (0.05 M, 0.1 M and 0.15 M NaCl) from germination to seedling stage along with control under laboratory conditions. The main objective of this study was to find out variations in the activities of antioxidant enzymes which can differentiate tolerance to salinity. Increasing salinity stress induced gradual increase in the activity of Superoxide dismutase (SOD), Peroxidase, Catalse (CAT), Glutathione reductase (GR), and Ascorbate peroxidase (APX). High activities of SOD, CAT, GR and APX were observed in Doodeshwar and Malabti under salinity stress. High levels of antioxidant enzymes (SOD, CAT, APX and GR) under salinity stress will contribute to salinity tolerance in rice varieties Doodeshwar and Malabathi. Significant genotype×salt treatment interaction suggested the differential effect of stress on genotype for antioxidant enzymes. Catalse activity showed significant (p<.001) positive correlation with SOD (r=.818), GR (r=.624), and APX (r=.593). High levels of Lipid peroxidation was noticed in Ghewas, Gonrabidan-2 and Sadamota, indicating higher membrane damage when compare to Doodeshwar and Malabathi under salt stress. Doodeshwar and Malabathi can be recommended as salt tolerant varieties for advance evaluation at field level. Analysis of antioxidant enzymes from rice seedlings exposed to salinity stress will provide rapid screening method and time saving. Mass screening will be conducted for preliminary selections which can be used in field conditions.
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| format | Article |
| id | doaj-art-33f84d7a9f97416db90c2a925e44ae28 |
| institution | OA Journals |
| issn | 2349-4735 |
| language | English |
| publishDate | 2022-02-01 |
| publisher | Puspa Publishing House |
| record_format | Article |
| series | International Journal of Economic Plants |
| spelling | doaj-art-33f84d7a9f97416db90c2a925e44ae282025-08-20T02:37:46ZengPuspa Publishing HouseInternational Journal of Economic Plants2349-47352022-02-019Feb, 1Activities of Antioxidant Enzymes in Six Rice (Oryza sativa L.) Varieties at Seedling Stage under Increasing Salinity StressRajkumar D.0Gangadhar Rao S1Tirupathi B.2Gonzalez Rodriguez, H.3Dept. of Botany, Osmania University, Hyderabad (500 007), IndiaDept. of Botany, Osmania University, Hyderabad (500 007), India,Dept. of Botany, Osmania University, Hyderabad (500 007), India,Universidad Autonoma de Nuevo Leon, Facultadde CienciasForestales, Carr. Nac. No. 85, km 145, Linares, Nuevo Leon (67700), Mexico Present study deals with the activities of antioxidant enzymes in six rice (Oryza sativa L.) varieties, namely Sadamota, Patnai, Dhoodeshwar, Ghewas, Gontrabidan-2 and Malabati, which were subjected to increasing salinity stress (0.05 M, 0.1 M and 0.15 M NaCl) from germination to seedling stage along with control under laboratory conditions. The main objective of this study was to find out variations in the activities of antioxidant enzymes which can differentiate tolerance to salinity. Increasing salinity stress induced gradual increase in the activity of Superoxide dismutase (SOD), Peroxidase, Catalse (CAT), Glutathione reductase (GR), and Ascorbate peroxidase (APX). High activities of SOD, CAT, GR and APX were observed in Doodeshwar and Malabti under salinity stress. High levels of antioxidant enzymes (SOD, CAT, APX and GR) under salinity stress will contribute to salinity tolerance in rice varieties Doodeshwar and Malabathi. Significant genotype×salt treatment interaction suggested the differential effect of stress on genotype for antioxidant enzymes. Catalse activity showed significant (p<.001) positive correlation with SOD (r=.818), GR (r=.624), and APX (r=.593). High levels of Lipid peroxidation was noticed in Ghewas, Gonrabidan-2 and Sadamota, indicating higher membrane damage when compare to Doodeshwar and Malabathi under salt stress. Doodeshwar and Malabathi can be recommended as salt tolerant varieties for advance evaluation at field level. Analysis of antioxidant enzymes from rice seedlings exposed to salinity stress will provide rapid screening method and time saving. Mass screening will be conducted for preliminary selections which can be used in field conditions. https://ojs.pphouse.org/index.php/IJEP/article/view/4712Activities, antioxidant enzymes, rice, seedling, salinity, tolerance, varieties |
| spellingShingle | Rajkumar D. Gangadhar Rao S Tirupathi B. Gonzalez Rodriguez, H. Activities of Antioxidant Enzymes in Six Rice (Oryza sativa L.) Varieties at Seedling Stage under Increasing Salinity Stress International Journal of Economic Plants Activities, antioxidant enzymes, rice, seedling, salinity, tolerance, varieties |
| title | Activities of Antioxidant Enzymes in Six Rice (Oryza sativa L.) Varieties at Seedling Stage under Increasing Salinity Stress |
| title_full | Activities of Antioxidant Enzymes in Six Rice (Oryza sativa L.) Varieties at Seedling Stage under Increasing Salinity Stress |
| title_fullStr | Activities of Antioxidant Enzymes in Six Rice (Oryza sativa L.) Varieties at Seedling Stage under Increasing Salinity Stress |
| title_full_unstemmed | Activities of Antioxidant Enzymes in Six Rice (Oryza sativa L.) Varieties at Seedling Stage under Increasing Salinity Stress |
| title_short | Activities of Antioxidant Enzymes in Six Rice (Oryza sativa L.) Varieties at Seedling Stage under Increasing Salinity Stress |
| title_sort | activities of antioxidant enzymes in six rice oryza sativa l varieties at seedling stage under increasing salinity stress |
| topic | Activities, antioxidant enzymes, rice, seedling, salinity, tolerance, varieties |
| url | https://ojs.pphouse.org/index.php/IJEP/article/view/4712 |
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