International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2016, Volume : 4, Issue : 2
First page : (263) Last page : (286)
Article doi: http://dx.doi.org/10.18782/2320-7051.2269

Salt Tolerance in Mycorrhizal Plants Due To Induced Modifications In Cell Physiology and Biochemistry

Srimathi Priya L.1*, Kumutha K.2 and Pandiyarajan P. 3
1Assistant Professor (Agricultural Microbiology), Department of Soil Science & Agricultural Chemistry, Agricultural College & Research Institute, Killikulam, Vallanad - 628 252, Tutucorin, India
2Professor, Department of Agricultural Microbiology, Tamil Nadu Agricultural University, Coimbatore, India
3Professor, Department of, Anbil Dharmalingam Agricultural College, Trichy, India
*Corresponding Author E-mail: agrisriya@gmail.com
Received: 13.04.2016  |  Revised: 19.04.2016   |  Accepted: 21.04.2016  

Abstract
A pot culture experiment was taken up to examine the influence of AM inoculation on salinity tolerance in Onion crop. Sodic soil isolates of AM viz., TRY 1, TRY 2, TRY 3 and TFS 1 with two standard cultures (G. intraradices and S. calospora) and a control with salt alone were used. The bulbs of onion were planted and then subjected to three levels of salinity. The results illustrated that the host plants had significant rate of mycorrhizal dependency (MD) which was found to increase with increase in salt levels when treated with AM fungal inoculants. The phosphatase and dehydrogenase enzyme activities increased due to mycorrhizal inoculation at all the three levels of salt while the defense enzymes registered remarkable increase with stress levels. Histochemical studies in onion roots, exhibited a clear difference in root anatomy in the mycorrhizal treatments, with lignification of the vascular cells and vacuole formation. These biochemical changes observed in the plants confirmed the adaptation of mycorrhizal plants not only through defense activities but also influence plant growth and nutrition over the control plants at salt stressed condition. 

Key words: Sodic soil; Mycorrhizal dependency; Phosphatase; Dehydrogenase; Root anatomy

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Priya S.L. , Kumutha, K. and Pandiyarajan, P.,  Salt Tolerance in Mycorrhizal Plants Due To Induced Modifications In Cell Physiology and Biochemistry, Int. J. Pure App. Biosci. 4(2): 263-286 (2016). doi: http://dx.doi.org/10.18782/2320-7051.2269