Effect of Heavy metal stress on spore germination of Pteris confusa T. G. Walker and Pteris argyraea T. Moore
Journal Title: Журнал ÑтреÑÑ-физиологии и биохимии - Year 2011, Vol 7, Issue 4
Abstract
[b]Background: [/b]Plants have both constitutive and adaptive mechanisms for coping with the elevated metal concentrations and they are utilized to clean the polluted soil and water. Unlike angiosperms hyperaccumulators, fern hyperaccumulators are equipped with inherent biological characteristics that could be exploited in the phytoremediation strategies aimed at decontaminating polluted sites. Fern spores can be successfully used to screen the hyperaccumualting ferns and also to test the toxicity of the metal contaminated samples. [b]Purpose of the Study:[/b] In the present study, a preliminary attempt was made to compare the tolerance capacity of the spores of two ferns; [i]Pteris confusa[/i] T. G. Walker and [i]Pteris argyraea[/i] T. Moore against the heavy metal zinc (Zinc sulphate). Spores of the two ferns were cultured in Knop’s liquid medium with various concentrations of zinc sulphate (0-200ppm). [b]Results:[/b] In the case of [i]P. confusa[/i] normal germination was observed in control, 120 ppm and 140 ppm and the germination of spores were failed in 160, 180 and 200 ppm of zinc supplemented cultures. In contrary, [i]P. argyraea[/i] showed maximum percentage of spore germination in 140 ppm zinc supplemented cultures and the control and 120 ppm zinc sulphate supplemented cultures were failed to show the germination. The germination percentage and growth rate was decreased in high concentration of zinc sulphate. Rhizoids are showed more tolerance to heavy metal than protonema of [i]P. argyraea[/i]. [b]Conclusion:[/b] Difference in response of spores to the heavy metal zinc may be due the difference in the hyper-accumulating capacity of the ferns.
Authors and Affiliations
V. Irudayaraj, M. Johnson, A. Priyakumari, Prabha Janani
Keywords
Related Articles
- EP ID EP134897
- DOI -
- Views 97
- Downloads 0
The Effect of Herbicides on Hydrogen Peroxide Generation in Isolated Vacuoles of Red Beet Root (Beta vulgaris L.)
Influence of herbicides on the hydrogen peroxide generation in vacuolar extracts of red beet root ([i]Beta vulgaris[/i] L.) was investigated. Belonging to different chemical classes of herbicide compounds have been used....
Effect of iron dusts on physiological responses of gram seedlings (Cicer arietinum L.) under laboratory conditions
A laboratory experiments was conducted for the assessment of physiological and biochemical responses of iron dust under the influence of different pH levels (6.5, 5.0, 3.0) and two concentration of iron dust (0.1 mg and...
Influence of Waterlogging on Carbohydrate Metabolism in Ragi and Rice Roots
Effect of different durations of waterlogging (4, 8 and 12 days) stress on carbohydrate status and activities of some related enzymes in ragi and rice roots was studied. In both ragi and rice roots there was decrease in...
Glycine betaine and salicylic acid induced modification in productivity of two different cultivars of wheat grown under water stress
A pot experiment was conducted to evaluate the beneficial effect of foliar application of glycine betaine (10mM), grain presoaking in salicylic acid (0.05 M) and their interaction on drought tolerance of two wheat ([i]Tr...
Azospirillum lectin – induced changes in the content of nitric oxide in wheat seedling roots
The lectin of Azospirillum brasilense Sp7 at 40 μg ml[sup]-1[/sup] elicited two peaks of induction of nitric oxide synthesis in the roots of wheat seedlings after 3 and 26 h of coincubation. The lectin of A. brasilense S...