Foliar-applied trehalose modulates growth, mineral nutrition, photosynthetic ability, and oxidative defense system of rice (Oryza sativa L.) under saline stress. (25th February 2017)

• Record Type: Journal Article
• Authors: Shahbaz, Muhammad; Abid, Abida; Masood, Atifa; Waraich, Ejaz Ahmed
• Is Part Of: Journal of plant nutrition. Volume 40:Number 4(2017)
• Page Start: 584
• Page End: 599
• Publication Date: 2017-02-25
• Subjects: antioxidants -- photosynthesis -- rice -- salinity -- trehalose; Plants -- Nutrition -- Periodicals; Plants -- Effect of minerals on -- Periodicals; Deficiency diseases in plants -- Periodicals; 575.76
• DOI: 10.1080/01904167.2016.1263319
• Languages: English
• ISSNs: 0190-4167

Abstract

ABSTRACT: A tub experiment was conducted to assess the effect of exogenously applied trehalose (0, 10, and 20 mM) on various attributes of two rice cultivars (Bas-385 and Bas-2000) under salt stress (0, 50, 100, and 150 mM). Salinity decreased growth, gas exchange characteristics, shoot and root potassium (K + ) ions, hydrogen peroxide (H2 O2 ), total soluble proteins, activity of catalase (CAT), and yield attributes, while it increased chlorophyll contents, shoot and root sodium (Na + ) and calcium (Ca 2+ ), malondialdehyde (MDA), glycinebetain (GB), free proline, and peroxidase (POD) activity. Foliar-applied trehalose improved growth attributes, net photosynthetic rate, GB, total soluble proteins, superoxide dismutase (SOD) and yield. Yield was not obtained at 150 mM salt stress. The rice cultivar Bas-2000 showed better performance with respect to gas exchange attributes and activities of enzymatic antioxidants. Overall, varying levels of foliar-applied trehalose proved to be effective in ameliorating adverse effects of salt stress on rice.