Ameliorative effect by calcium on NaCl salinity stress related to reactive oxygen species metabolism in Amaranthus tricolor L
Journal Title: Journal of Research in Biology - Year 2011, Vol 1, Issue 6
Abstract
Soil salinity affects plant growth and development by way of osmotic imbalance which induces oxidative damage in plant tissues. Oxidative stress is caused by increased production of Active Oxygen Species (AOS), such as O2−, •OH, H2O2 and 1O2 these lead to lipid peroxidation, enzyme inactivation and oxidative damage to DNA. Plants have antioxidant defense systems to protect against the production and action of the AOSs. Plants with high level of antioxidants, either constitutive or induced, have been reported to produce greater resistance to this oxidative damage in plant cells. AOS synthesis and its scavenging were investigated in the control, different concentrations of NaCl and NaCl + CaCl2 stressed Amaranthus tricolor L. and Phaseolus vulgaris L.. AOS such as superoxide anion and H2O2 content showed a steady increase in the plants of all NaCl treated media compared to control. When the salinized media were supplemented with CaCl2 the AOS level drastically decreased compared to the corresponding plants grown on salt alone. Similarly, the activity of antioxidant enzymes such as superoxide dismutase, ascorbate peroxidase, catalase and glutathione reductase under salt stress were higher in NaCl + CaCl2 supplemented media than the plants on the salinized media alone. This suggested that the alleviation effect of calcium under saline condition was through modulation of the enzyme complexes that accelerate the rate of antioxidant enzymes biosynthesis under salt stress. Similarly, the level of lipid peroxidation was found to be lower in plants of all NaCl + CaCl2 media than control
Authors and Affiliations
Sunukumar SS, Harish SR, Manoj GS, Sreelekshmi SG, Remya Krishnan, Lubaina AS, Murugan K
Keywords
Related Articles
- EP ID EP561964
- DOI -
- Views 111
- Downloads 0
Wild edible plant Diversity of Kotagiri Hills - a Part of Nilgiri Biosphere Reserve, Southern India
The present study documented indigenous knowledge on wild edible plant resources from the tribe Irulas of Kotagiri at Nilgiri Hills. They are partially or fully dependent on the wildresources for their nutritional requir...
Determining an effective way to control weeds in the Olam Palm, Kango (Gabon) using herbicide treatment
The fight against weeds in forest areas is a major constraint to agricultural production; indeed, the loss of production there are around 25%. The use of herbicides for control remains common. This study aims to propose...
Fly as pollinator in Caralluma umbellata Haw. (Asclepiadaceae) found in the Pachamalai hills, Eastern Ghats, Tamil Nadu
Pollination studies have been done in the Caralluma umbellata, a member of Asclepiadaceae found in the Pachamalai hills of Tamil Nadu. The hills lie between latitudes 11°09'00" to 11°27'00" N and longitudes 78°28'00" to...
Bioefficacy of Novaluron®, a chitin synthesis inhibitor against the tropical warehouse moth, Ephestia cautella
The tropical warehouse moth, Ephestia cautella (Lepidoptera: Pyralidae) is a major pest of stored maize in Ghana. It is controlled mainly by the use of synthetic insecticides which has become a major challenge in the sto...
An assessment of Floristic Diversity of Daroji Sloth Bear Sanctuary, Hospet, Bellary District, Karnataka, India
The plant resources of Daroji Sloth Bear Sanctuary of Bellary district was studied and analyzed to decipher the information on the diversity, which revealed a total of 98 species of plants belonging to 85 genera and 37 f...