TITLE:
The Biphasic Role of Cupper and Counteraction with Azospirillum brasilense Application on Growth, Metabolities, Osmotic Pressure and Mineral of Wheat Plant
AUTHORS:
Hamdia M. Abd El-Samad
KEYWORDS:
Cu++ Treatment, Azospirillum brasilense, Wheat
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.8 No.5,
April
30,
2017
ABSTRACT: The
interactive effect of different Cu++ concentrations (5 mM, 10 mM, 20 mM and 25 mM) and treatments with
biofertilizers Azospirillum brasilense on growth, metabolites, minerals and osmotic pressure of wheat plants was
investigated. Shoots and
roots of wheat plant were differentially response to Cu++ treatments, while shoot organ response positively to this treatment, root response negatively. The positive effect of Cu++ in shoot organ was concomitant with the increase in the production
of fresh, dry matter, length and water
content and this related with the accumulation of soluble sugar, soluble protein and mineral as a result of
increasing osmotic pressure. On the other side, the negative effect of Cu++ on
root organ was concomitant with the decrease in production of fresh, dry matter, length
and water content that related with the reduction in the accumulation of soluble
sugar and mineral with the insignificant change in osmotic pressure. Azospirillum brasilense inoculation
increased the
accumulation of soluble sugar and soluble protein which reflected an increase
in the production of fresh, dry matter and water content with increasing values
of osmotic pressure of the tested plants under Cu++ treatment. Finally, wheat plants response differentially to Cu++ treatment according to its organ and Azospirillum brasilense treatment improved wheat plant efficiency to tolerate the effect of Cu++ stress.