Hypersensitive Response: “A Player In Plant Defense”
Journal Title: International Journal of Bio-Technology and Research (IJBTR) - Year 2017, Vol 7, Issue 4
Abstract
Plants have developed sophisticated mechanisms to protect themselves from various diseases. Besides preformed physical and chemical barrier that hinders infection, a wide range of defence responses are induced only after pathogen attack. These responses include translocation of Ca2+ and protons across the plasma membrane into the cytosol, hypersensitive response, protein phosphorylation/ dephosphorylation, activation of enzymes that generate ROS such as NADPH-oxidase and peroxidase, accumulation of NO and SA and expression of defense related genes. Hypersensitive response is one of the immediate defence mechanisms of plant against pathogen infection. It is a form of programmed cell death (PCD) that helps in restricting the pathogen growth. Present review includes the role of hypersensitive response in defense, molecular marker of hypersensitive response and the components of major signalling pathways that play an important role in defence. This review will give us an insight on hypersensitive response (HR) of plants with respect to the physiological, biochemical and molecular determinants in different plant species.
Authors and Affiliations
Arpita Mishra, Neha Tiwari
Keywords
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