Please use this identifier to cite or link to this item:
Title: Potassium-induced alleviation of salinity stress in Brassica campestris L.
Author: Umar, Shahid
Diva, Iram
Anjum, Naser A.
Iqbal, Muhammad
Ahmad, Iqbal
Pereira, Eduarda
Keywords: Antioxidant defence system
Brassica campestris
Ion accumulation
Oxidative stress
Plant growth
Potassium nutrition
Issue Date: 2011
Publisher: De Gruyter Open
Abstract: Salinity is an important abiotic factor that adversely affects major agricultural soils of the world and hence limits crop productivity. An optimum mineral-nutrient status of plants plays critical role in determining plant tolerance to various stresses. A pot experiment was conducted on mustard (Brassica campestris L.) to study the protective role of added potassium (K, 40 mg kg-1 soil) against salinity-stress (0, 40 and 80 mM NaCl)-induced changes in plant growth, photosynthetic traits, ion accumulation, oxidative stress, enzymatic antioxidants and non-enzymatic antioxidants at 30 days after sowing. Increasing NaCl levels decreased the growth, photosynthetic traits and the leaf ascorbate and glutathione content but increased the leaf ion accumulation and oxidative stress, and the activity of antioxidant enzymes. In contrast, K-nutrition improved plant growth, photosynthetic traits, activity of antioxidant enzymes and the ascorbate and glutathione content, and reduced ion accumulation and oxidative stress traits in the leaves, more appreciably at 40 mM than at 80 mM NaCl. The study illustrates the physiological and biochemical basis of K-nutrition-induced NaCl tolerance in mustard as a means to achieving increased crop productivity in a sustainable way.
Peer review: yes
DOI: 10.2478/s11535-011-0065-1
ISSN: 1895-104X
Appears in Collections:CESAM - Artigos
DBio - Artigos
DQ - Artigos

Files in This Item:
File Description SizeFormat 
Umar et al. - 2011 - Potassium-induced alleviation of salinity stress i.pdf488.95 kBAdobe PDFView/Open

Formato BibTex MendeleyEndnote Degois 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.