Effect of Cadmium Toxicity on Growth, Oxidative Damage, Antioxidant Defense System and Cadmium Accumulation in Two Sorghum Cultivars

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dc.contributor.authorHassan, Muhammad Jawad
dc.contributor.authorRaza, Muhammad Ali
dc.contributor.authorRehman, Sana Ur
dc.contributor.authorAnsar, Muhammad
dc.contributor.authorGitari, Harun I.
dc.contributor.authorKhan, Imran
dc.contributor.authorWajid, Muhammad
dc.contributor.authorAhmed, Mukhtar
dc.contributor.authorShah, Ghulam Abbas
dc.contributor.authorPeng, Yan
dc.contributor.authorLi, Zhou
dc.date.accessioned2020-11-23T09:06:34Z
dc.date.available2020-11-23T09:06:34Z
dc.date.issued2020
dc.descriptionAn Article Published in Plantsen_US
dc.description.abstractHeavy metal stress is a leading environmental issue reducing crop growth and productivity, particularly in arid and semi-arid agro-ecological zones. Cadmium (Cd), a non-redox heavy metal, can indirectly increase the production of reactive oxygen species (ROS), inducing cell death. A pot experiment was conducted to investigate the effects of different concentrations of Cd (0, 5, 25, 50, 100 µM) on physiological and biochemical parameters in two sorghum (Sorghum bicolor L.) cultivars: JS-2002 and Chakwal Sorghum. The results showed that various concentrations of Cd significantly increased the Cd uptake in both cultivars; however, the uptake was higher in JS-2002 compared to Chakwal Sorghum in leaf, stem and root. Regardless of the cultivars, there was a higher accumulation of the Cd in roots than in shoots. The Cd stress significantly reduced the growth and increased the electrolyte leakage (EL), hydrogen peroxide (H2O2) concentration and malondialdehyde (MDA) content in both cultivars, but the Chakwal Sorghum showed more pronounced oxidative damage than the JS-2002, as reflected by higher H2O2, MDA and EL. Moreover, Cd stress, particularly 50 µM and 100 µM, decreased the activity of different antioxidant enzymes, including superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT). However, the JS-2002 exhibited higher SOD, POD and CAT activities than the Chakwal Sorghum under different Cd-levels. These findings revealed that JS-2002 had a stronger Cd enrichment capacity and also exhibited a better tolerance to Cd stress due to its efficient antioxidant defense system than Chakwal Sorghum. The present study provides the available information about Cd enrichment and tolerance in S. bicolor, which is used as an important agricultural crop for livestock feed in arid and semi-arid regions.en_US
dc.identifier.citationJawad Hassan, M., Ali Raza, M., Ur Rehman, S., Ansar, M., Gitari, H., Khan, I., ... & Li, Z. (2020). Effect of Cadmium Toxicity on Growth, Oxidative Damage, Antioxidant Defense System and Cadmium Accumulation in Two Sorghum Cultivars. Plants, 9(11), 1575.en_US
dc.identifier.urihttp://ir-library.ku.ac.ke/handle/123456789/20969
dc.language.isoenen_US
dc.publisherMDPIen_US
dc.subjectCadmiumen_US
dc.subjectHeavy metalen_US
dc.subjectFood securityen_US
dc.subjectOxidative damageen_US
dc.subjectAntioxidantsen_US
dc.titleEffect of Cadmium Toxicity on Growth, Oxidative Damage, Antioxidant Defense System and Cadmium Accumulation in Two Sorghum Cultivarsen_US
dc.typeArticleen_US
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