Hydrogen Peroxide Functions as a Signal in Wheat Response to Fusarium graminearum Infection

Hydrogen peroxide functions as a signal in wheat response to Fusarium graminearum infection

 

 

Mona Sorahinobar,^1,* Vahid Niknam,¹ Hassan Ebrahimzadeh¹, Hassan Soltanloo²

 

¹School of Biology, College of   Science, University of Tehran, Tehran, Iran

²Plant breeding and Biotechnology Department, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran E-mail:  m_sorahi@yahoo.com 

 

            Fusarium graminearum is a destructive disease of cereal crops with small grains. It causes economic losses due to reduction in both yield and quality [1,2]. The present study was carried out in greenhouse conditions in order to compare the time course  H₂O₂ content and peroxidase (POX) activity  between Fusarium Head Blight (FHB)- resistant and susceptible wheat genotypes at 48, 96 and 144 hours after inoculation. According to our results infection with F. graminearum increased H₂O₂ content and POX activity in both genotypes. This increase was much pronounced in Sumai3 (resistant genotype) in comparison with Falat(susceptible genotype).  In addition, this increase in Sumai3 occurred immediately after pathogen inoculation while there was no significant difference between control and treated plant in Falat up to 96 hours after inoculation.  According to our results rapid induction of H₂O₂ content and POX activity in resistant cultivar may play an important role in resistance against FHB in wheat.  

References

[1] Shin, K.-H.; Kamal, A. H. M.; Cho, K..; Choi, J.-S.; Yu, J.; Nam-Chon, P., et al. Plant Omics. 2011, 4(5), 270.

[2] Soltanloo, H.; Ghadirzade Khorzoghi, E.; Ramezanpour, S.; Kalateh, A.; Pahlavani, M. Omics Journal 2010, 3(5): 162-166