کلیدواژهها
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cadmium, Funelliformis mosseae, gene expression, Piriformospora indica, wheat
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چکیده
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In this study, the effects of Funelliformis mosseae and Piriformospora indica on wheat growth, enzyme activity
and gene expression of catalase (CAT), ascorbate peroxidase (APX) and glutathione S-transferase (GST) in wheat
leaves under different cadmium (Cd) toxicity were investigated. Cd exposure reduced plant dry mass and enzyme
activities of CAT and APX, but it increased GST activity. The presence of F. mosseae and P. indica (alone or
together) caused an increase in plant dry mass and activities of CAT, APX and GST. In response to Cd exposure,
transcriptional level of CAT was decreased but, transcription of APX and GST was up-regulated. Although
F. mosseae induced the expression of the antioxidant genes, P. indica was not detected to have such a strong
induction in the genes expression. The results obtained from this study suggest that F. mosseae and P. indica can be
used to alleviate Cd stress in wheat plants in contaminated soil. Also, no correlation was observed between mRNA
and enzyme alterations in some cases, which indicate that post-transcriptional and post-translational regulations
may play major roles.
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