Journal
JOURNAL OF PLANT INTERACTIONS
Volume 6, Issue 4, Pages 275-282Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/17429145.2011.557513
Keywords
sugarcane; iso-osmotic; salt; PEG; osmotic adjustment; oxidative damage; antioxidant enzymes
Categories
Funding
- University Grant Commission, New Delhi
- Department, University of Pune, Pune
Ask authors/readers for more resources
In order to discriminate between the ionic and osmotic components of salt stress, sugarcane (Saccharum officinarum L. cv. Co 86032) plants were treated with salt-NaCl or polyethylene glycol-PEG 8000 solutions (-0.7 MPa) for 15 days. Both the salt and PEG treatments significantly reduced leaf width, number of green leaves, and chlorophyll stability index. Osmotic adjustment (OA) indicated that both the stresses led to significant accumulation of osmolytes and sugars. Salt stressed plants appeared to use salt as an osmoticum while the PEG stressed plants showed an accumulation of sugars. Oxidative damage to membranes was not severe in plants subjected to salt or PEG stress. The salt stressed plants showed an increase in the activities of superoxide dismutase (SOD) and ascorbate peroxidase (APX), while PEG stress led to an increase in SOD but not APX activity as compared to the control. Thus, results indicate that the iso-osmotic salt or PEG stress led to differential responses in plants especially with respect to growth, OA, and antioxidant enzyme activities.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available