Reactive oxygen species

Reactive or active oxygen species (ROS) are believed to have several distinct roles in plant defences:

• Direct antimicrobial effect
• Oxidative cross-linking in cell walls
• Signalling between cells

We are studying the origin and effects of  ROS on fungal pathogens of plants. Studying the generation of ROS can represent a useful assay for defence responses in plants.

 

 

 

 H₂O₂ accumulation in wheat inoculated with Septoria tritici at 7 dai.

 

Selected publications:
Shetty NP, Jørgensen HJL, Jensen JD, Collinge DB, Shetty HS (2008). Roles of reactive oxygen species in interactions between plants and pathogens Eur. J. Plant Pathol. 121:267-80  

 

Shetty NP, Mehrabi R, Lütken H, Haldrup A, Kema GHJ, Collinge DB, and Jørgensen HJL (2007). Role of Hydrogen Peroxide During the Interaction between the Hemibiotrophic Fungal Pathogen Septoria tritici and Wheat. New Phytol 174:637-47 

 

Thordal-Christensen H, Zhang ZG, Wei YD and Collinge DB (1997). Subcellular localization of H₂O₂ in plants. H₂O₂ accumulation in papillae and hypersensitive response during the barley-powdery mildew interaction. Plant Journal 11 (6):1187-1194

 

 

For more publications, go to the contact persons profile (link in right column).