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Journal of Biomedicine and Biotechnology
Volume 2009 (2009), Article ID 680160, 10 pages
Review Article

The Venturia Apple Pathosystem: Pathogenicity Mechanisms and Plant Defense Responses

Biotechnology Division, Institute of Himalayan Bioresource Technology, Council of Scientific and Industrial Research, Palampur 176061, Himachal Pradesh, India

Received 27 March 2009; Revised 10 August 2009; Accepted 29 October 2009

Academic Editor: Sudhir Kumar Sopory

Copyright © 2009 Gopaljee Jha et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Venturia inaequalis is the causal agent of apple scab, a devastating disease of apple. We outline several unique features of this pathogen which are useful for molecular genetics studies intended to understand plant-pathogen interactions. The pathogenicity mechanisms of the pathogen and overview of apple defense responses, monogenic and polygenic resistance, and their utilization in scab resistance breeding programs are also reviewed.