PATH-111

PATH- 111 : INTRODUCTORY PLANT PATHOLOGY

Credit: 1+1=2

THEORY:
Introduction, History of Plant Pathology: History and development of Plant Pathology in ancient, pre-modern, modern and present eras, Contribution made by different scientists,
Definitions and objectives of Plant Pathology: Concepts of disease, Disease triangle,
Important plant pathogenic organisms: Different groups like fungi, bacteria, fastidious vesicular bacteria, virus and phytoplasma with examples of diseases caused by them.
Morphology and reproduction: of spiroplasmas, viruses, viroids, algae, protozoa and phanerogamic parasites with examples of diseases.
Prokaryotes: Classification of prokaryotes according to Bergey’s Manual of Systematic Bacteriology.
General characters of fungi: Mycelium (septate and non-septate), nutrition of fungi – saprophytes, parasites and symbiosis), Definition of fungus, somatic structures, types of fungal thalli, fungus tissues, modification of thallus, reproduction in fungi (asexual and sexual) – spores (asexual and sexual), spore fruits (asexual and sexual), Asexual reproduction: fission, budding, and fragmentation.
Sexual reproduction: Plasmogamy, Karyogamy and Meiosis.
Method of reproduction: Planogametic Copulation, Gametangial Contact, Gametangial Copulation, Spermatization, Dikaryotization.
Nomenclature: Binomial system of nomenclature, rules of nomenclature.
Classification of fungi: Up to genus.

PRACTICALS:
Morphology of fungi (Vegetative), Reproductive structures and spore fruits in fungi, Symptoms produced by plant pathogens like fungi, bacteria, viruses and mycoplasmas, Acquaintance to Plant Pathology laboratory and equipments, Preparation of culture media for fungi and bacteria, Isolation techniques, Demonstration of Koch’s Postulates, Collection of disease specimen and preparation of mounts, Preservation of disease samples, Study of important genera of plant pathogenic fungi like Pythium, Phytophthora, Albugo, Sclerospora, Perenosclerospora, Pseudoperenospora, Perenospora, Plasmopara, and Bremia (Oomycota); Mucor and Rhizopus (Zygomycota); Oidium, Oidiopsis, Ovulario, Erysiphe, Phyllactinia, Uncinula and Podosphaera (Ascomycota); Puccinia (Different stages), Uromyces, Hemiliea, Sphacelotheca (Soroporium), Ustilago, Tolyposporium, Agaricus, Pleurotus and Ganoderma (Basidiomycota); Septoria, Colletotrichum, Pestalotiopsis, Pyricularia, Drechslera, Alternaria, Stemphyffium, Cercospora, Phaeoisariopsis, Rhizoctonia and Sclerotium (Asexual Ascomycetes – Deuteromycota).

Practicals (Experiments):
1) Morphology of fungi (Vegetative).
2) Reproductive structures and spore fruits in fungi.
3) Symptoms produced by fungal plant pathogens.
4) Symptoms produced by bacterial plant pathogens.
5) Symptoms produced by viruses and phytoplasma.
6) Acquaintance to Plant Pathology laboratory and equipments.
7) Preparation of culture media for fungi and bacteria.
8) Isolation techniques, demonstration of Koch’s postulates, collection of disease specimen and preparation of mounts.                                              9) Preservation of disease samples.
10) Study of Pythium, Phytophthora and Albugo.
11) Study of Sclerospora, Perenosclerospora, Pseudoperenospora, Perenospora, Plasmopara, and Bremia.
12) Study of genera Mucor and Rhizopus.
13) Study of Oidium, Oidiopsis, Ovulariopsis, Erysiphe, Phyllactinia, Uncinula and Podosphaera.
14) Study of Puccinia (Different stages), Uromyces, Hemiliea.
15) Study of Sphacelotheca, Ustilago and Tolyposporium.
16) Study of Agaricus, Pleurotus and Ganoderma.
17) Study of Septoria, Colletotrichum and Pestalotiopsis.
18) Study of Pyricularia, Helminthosporium, Drechslera, Alternaria, Stemphyllium, Cercospora, Phaeoisariopsis, Rhizoctonia and Sclerotium.