Plant Pathogens and Principles of Plant Pathology (Paper Code: 17010207)
Theory

Introduction, definition and objectives of plant pathology; terms and concepts in plant pathology. Father of mycology, Plant pathology Bacteriology, virology. Phythoplasmas

Plant pathogens: introduction, important plant pathogenic organisms, different groups-fungi, bacteria, fastidious vesicular bacteria, phytoplasmas, spiroplasmas, viruses, viriods, algae, protozoa and phanerogamic parasites;; general characters of fungi, definition of fungus, somatic structures, types of fungal thalli, fungal tissues, modifications of thallus, reproduction in fungi (asexual and sexual); nomenclature Introduction.

Classification of fungi; key to divisions and sub-divisions; and study of importance fungal genera;

Survival and dispersal of plant pathogens; phenomenon of infection: pre-penetration, penetration and post penetration; pathogenesis: role of enzymes, toxins, growth regulators and polysaccharides.

 Defense mechanism in plants: structural and bio-chemical (pre and post infection); plant disease epidemiology; general principles of plant diseases management: importance, general principles – avoidance, exclusion, protection – plant quarantine and inspection – quarantine rules and regulations;

 Cultural methods: rouging, eradication of alternate and collateral hosts, crop rotation, manure and fertilizer management, mixed cropping, sanitation, hot weather ploughing, soil amendments, time of sowing, seed rate and plant density, irrigation and drainage; role and mechanisms of biological control and PGPR; physical and chemical methods, methods of application of fungicides; host plant resistance,

  

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Must know
Classification of prokaryotes according to Bergey’ s manual of systematic bacteriology, application of biotechnology in plant disease management, plant disease forecasting and remote sensing. 2 Desirable to Know
History of plant pathology, development of disease resistant transgenic plants through gene cloning; integrated plant disease management (IDM): concept, advantages and importance 2  

Nice to Know
Practical

Acquaintance to plant pathology laboratory and equipments; preparation of culture media for fungi and bacteria;

isolation techniques, preservation of disease samples; Pythium, Phytophthora, Albugo; Sclerospora, Peronospora, Plasmopara ; Mucor,  Rhizopus, Aspergillus, Penicillium, Oidium, Erysiphe, Phyllactinia, Uncinula and Puccinia, Uromyces, Hemiliea;(coffee melt) Sphacelotheca, Ustilago, Tolyposporium; Agaricus,; Imperfect fungi Septoria, Colletotrichum, Pyricularia; Trichoderma, Fusarium, ,Alternaria, Cercospora, Rhizoctonia and Sclerotium;

 demonstration of Koch’s postulates; study of different groups of fungicides and antibiotics; preparation of fungicides: 0.1% ppm methods of application of fungicides: seed, soil and foliar; bio-control of plant pathogens: dual culture technique, seed treatment;

  

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Must know
Bio-assay of fungicides – poisoned food technique, inhibition zone technique and slide germination technique.   Desirable to Know
Visit to quarantine station and remote sensing laboratory.   Nice to Know
Syllabus books

1.       Singh. R.S 2002. Introduction to Principles of Plant Pathology. Oxford and IBH Publishing, New Delhi

2.       Dasgupta, M.K. 1998. Principles of Plant Pathology. Allied Publishers Pvt. Ltd. Bangalore

3.       Nene,Y.L. and Thapliyal,P.N. 1998. Fungicides in Plant Disease Control. Oxford and IBH New Delhi

4.       Agrios, G.N. 2003.. Plant Pathology Academy Press. New York.

5.       Maloy. O.C. 1993. Plant Disease Control. Principles and Practice. John Wiley and Sons.Inc. New York

  
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