Genotypic variation in Brassica juncea (L.) Czern. cultivars in growth, nitrate assimilation, antioxidant responses and phytoremediation potential during cadmium stress.

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dc.contributor.authorSharma, Asha
dc.contributor.authorSainger, Manish
dc.contributor.authorDwivedi, Sanjay
dc.contributor.authorSrivastava, Sudhakar
dc.contributor.authorTripathi, R D
dc.contributor.authorSingh, Rana P
dc.date.accessioned2013-05-02T09:21:36Z
dc.date.available2013-05-02T09:21:36Z
dc.date.issued2010-09
dc.description.abstractFour cultivars of Brassica juncea i.e. TM-4, TM-2, RH-30 and T-59 were screened for seed germination and seedling growth up to 15 days in the presence of 0.5-1.5 mM cadmium (Cd). The exposure to Cd reduced seed germination and seedling growth (root and shoot length and dry weight) in all four cultivars; the effect being more severe in TM-2 and RH-30 than in TM-4 and T-59 and at 3 d than at 7 d and 15 d. The cultivars TM-4 and T-59, with higher tolerance to Cd toxicity, were selected for further analysis including the estimation of nitrate reductase (NR) and peroxidase (POD) activities, total organic nitrogen (TON), total soluble proteins, proline levels and Cd accumulation. The NR activity and total soluble proteins decreased upon Cd exposure in a concentration dependent manner, whereas TON increased significantly in 3 d seedlings upon Cd exposure. The activity of POD and proline level increased significantly as compared to the respective controls. The level of Cd accumulation was higher in T-59 than in TM-4. Therefore, T-59 was found to be the most tolerant cultivar to Cd than other three cultivars possibly due to a better capacity to transport Cd in their vacuolar sink. The variety T-59, thus, appears to be suitable for Cd phytoremediation.en_US
dc.identifier.citationSharma Asha, Sainger Manish, Dwivedi Sanjay, Srivastava Sudhakar, Tripathi R D, Singh Rana P. Genotypic variation in Brassica juncea (L.) Czern. cultivars in growth, nitrate assimilation, antioxidant responses and phytoremediation potential during cadmium stress. Journal of Environmental Biology. 2010 Sept; 31(5suppl): 773-780.en_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/146494
dc.language.isoenen_US
dc.source.urihttps://www.jeb.co.in/journal_issues/201009_sep10_supp/paper_07.pdfen_US
dc.subjectBrassica junceaen_US
dc.subjectCadmiumen_US
dc.subjectGrowthen_US
dc.subjectPhytoremediationen_US
dc.titleGenotypic variation in Brassica juncea (L.) Czern. cultivars in growth, nitrate assimilation, antioxidant responses and phytoremediation potential during cadmium stress.en_US
dc.typeArticleen_US
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