NDLI: Supplementary CaCl$_{2}$ ameliorates wheat tolerance to NaCl

Content Provider	Springer Nature Link
Author	Nemat Alla, Mamdouh M. Abogadallah, Gaber M. Badran, Enas G. Nada, Reham M. Hassan, Nemat M.
Copyright Year	2014
Abstract	Nine-day-old seedlings of two wheat cultivars (Misr1 and Sakha93) were treated with NaCl at 75, 150 and 225 mM for 15 days with or without the presence of 10 mM CaCl$_{2}$. All concentrations of NaCl led to significant decreases in fresh and dry weights of only Sakha93; however, Misr1 seemed to be affected only at the highest concentration. Nonetheless, growth parameters of both cultivars under normal conditions were most likely similar. On the other hand, lipid peroxides (as MDA) and H$_{2}$O$_{2}$ were greatly accumulated particularly in Sakha93; significant increases were detected in Misr1 treated only at 225 mM. Also, all concentrations of NaCl decreased GSH content in Sakha93; nevertheless, there were no great differences among both cultivars under normal conditions. On the other hand, the activities of the enzymatic antioxidants, GR, GST, CAT and POD were unaffected in Misr1 by all concentrations but inhibited in Sakha93. AOX responded differently to NaCl, there were decreases in Misr1 by 75 and 225 mM and in Sakha93 by 75 and 150 mM. However, the application of CaCl$_{2}$ alleviated the impacts of NaCl; there was a retraction in growth reduction in Misr1 to reach most likely those of the control. In addition, the accumulated MDA and H$_{2}$O$_{2}$ were greatly counterbalanced. On the contrary, the decreased GSH contents seemed unrecovered in Sakha93 in spite of the alleviations in magnitudes. Moreover, there were recoveries in the activities of GR and POD in Sakha93; nevertheless, GST and CAT activities remained significantly inhibited. These findings suggest that Misr1 is a more tolerant cultivar to NaCl than Sakha93. Moreover, the results reveal that ROS scavenging is efficient and became more inducible in the less susceptible than in the more susceptible cultivar. The response of AOX appeared to coincide with antioxidants so that the damage which was inflicted by NaCl can be ameliorated by over-expression of antioxidants especially with the presence of CaCl$_{2}$.
Starting Page	2103
Ending Page	2112
Page Count	10
File Format	PDF
ISSN	01375881
Journal	Acta Physiologiae Plantarum
Volume Number	36
Issue Number	8
e-ISSN	18611664
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-05-28
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Antioxidants Alternative oxidase CaCl$_{2}$ Salinity Tolerance Wheat Plant Physiology Plant Genetics & Genomics Plant Biochemistry Plant Pathology Plant Anatomy/Development Agriculture
Content Type	Text
Resource Type	Article
Subject	Physiology Plant Science Agronomy and Crop Science

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