Effect of Mycorrhiza on Enzymatic Defense System of Corn and Sunflower Exposed to Salinity

H. Hamid, Zakaria; K. Ibrahim, Ismail; M. Suhail, Faris

	Effect of Mycorrhiza on Enzymatic Defense System of Corn and Sunflower Exposed to Salinity
Diyala Journal For Pure Science
Article 1, Volume 11, Issue 4, 2015, Pages 24-36
Authors
Zakaria H. Hamid; Ismail K. Ibrahim; Faris M. Suhail
Abstract
To study the Effect of enzymatic defense system of corn and sunflower plants exposed to Salinity a factorial experiment was conducted in (RCBD) design . Two treatments of mycorrhiza i.e (Inoculation with AM and without inoculation ) with three treatments of irrigation ( with a river water , 5, and 10 ds.m-1) . The plant types were significantly different in dry weights , leaf area and chlorophyll in response to the present and absent of AM inoculation as well as to salt stress . The activity of enzymes i.e ( SOD , CAT , POD ) markedly increase with the level of ( 5 ds.m-1) salinity . However , The activity of CAT and POD decreased at 10 ds.m-1 in inoculated and non –noculated plants . The SOD has opposite behavior compared with CAT and POD enzymes and its activity significantly increased at 5 and 10 ds.m-1 . At, both genotype plants the enzymatic defense system have been inducation at mycorrhizal plant compared with non mycorrhizal plant . The finding of current experiment revealed that the SOD enzyme was the first line of defense system which increased the tolerance of both genotype to salinity .The association of AM with both genotype roots system scavining the ROS formation and enhunsed the antioxident in enzyme in mycorrhizal plant .
Keywords
Mycorrhiza; Salt stress; Enzymatic defense system; Corn; sunflower

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