Cercosporin: A Photoactivated Toxin in Fungal Pathogenesis of Plants Prabhat Kumar, Vineeta Singh and Ramesh Chand* Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi-221005, India *Corresponding author, e-mail. rc_vns@yahoo.co.in CONTENTS 1. INTRODUCTION 2. CHEMISTRY OF CERCOSPORIN 3. CERCOSPORIN MODE OF ACTION 4. ROLE OF CERCOSPORIN IN DISEASE DEVELOPMENT 5. REGULATION OF CERCOSPORIN PRODUCTION IN CULTURE MEDIUM 6. BIOASSAY AND PURIFICATION OF CERCOSPORIN 7. GENE REGULATED MECHANISM AND BIOSYNTHESIS OF CERCOSPORIN 8. RESIATANCE MECHANISM OF CERCOSPORA SPP. TO ITS TOXIN CERCOSPORIN 9. STRATEGIES FOR CERCOSPORIN DEGRADATION 10. IN VITRO SCREENING FOR DISEASE RESISTANCE 11. APPROACHES TO DEVELOPE TRANSGENICS TO CERCOSPORIN 12. MEDICINAL PROPERTIES OF CERCOSPORIN 13. CONCLUSION 14. REFERENCES