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Assessing the impact of current tropospheric ozone on yield loss and antioxidant defense of six cultivars of rice using ethylenediurea in lower Gangetic Plains of India.

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Title Assessing the impact of current tropospheric ozone on yield loss and antioxidant defense of six cultivars of rice using ethylenediurea in lower Gangetic Plains of India.
Not Available
 
Creator Arvind Kumar Singh, Sabyasachi Mitra and Gouranga Kar
 
Subject Ambient ozone
Boro rice
Ethylenediurea
Antioxidants
Photosynthetic yield
 
Description Not Available
Climate change influences the current tropospheric ozone (O3) budget due to industrialization and urbanization processes. In recent years, the impact of elevated O3 on crop development and yield loss has emerged as one of the most important environmental issues, particularly in rural and suburban areas of the lower Indo-Gangetic Plains of India. The impact of current tropospheric ozone (O3) on the crop yield, photosynthetic yield, and enzymatic antioxidants of six rice (Oryza sativa L.) cultivars (IR 36, MTU 1010, GB 3, Khitish, IET 4786, and Ganga Kaveri) was investigated with and without the application of ethylenediurea (EDU). The results revealed that O3 stress significantly affected crop yield, photosynthetic yield, and antioxidant enzymes. The findings showed that O3 toxicity induces oxidative stress biomarkers, i.e., malondialdehyde (MDA) content and was manifested by increasing the enzymatic antioxidants, i.e., superoxidase dismutase (SOD) and catalase (CAT) in four rice cultivars (IR 36, GB 3, IET 4786, and Ganga Kaveri). At the same time, the results also illustrated that the rice cultivars MTU 1010 and Khitish are more tolerant to O3 stress as they had less oxidative damage, greater photosynthetic SPAD value, SOD and CAT activities, and lower MDA activity. The results also elucidated that the application of EDU decreased O3 toxicity in sensitive cultivars of rice by increasing antioxidant defense systems. The current O3 level is likely to show an additional increase in the near future, and the use of tolerant genotypes of rice may reduce the negative impacts of O3 on rice production.
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Date 2023-10-11T17:11:44Z
2023-10-11T17:11:44Z
2022-05-01
 
Type Research Paper
 
Identifier 1
0944-1344
http://krishi.icar.gov.in/jspui/handle/123456789/80584
 
Language English
 
Relation Not Available;
 
Publisher Environmental Science and Pollution Research