Category: Plant Pathogens & Principles of Plant Pathology Notes

Plant Pathogens & Principles of Plant Pathology Notes

Agencies involved in plant quarantine
Application of biotechnology in plant disease management
Ascomycotina
Asexual Reproduction in Fungi
Basidiomycotina
Biological control – Eradication of Alternate and Collateral Hosts
Cell and tissue culture
Classification of Fungi
Cultural Methods – Eradication of Alternate and Collateral Hosts
Defense Mechanism in Plants
Deuteromycotina
Disease Management by Biotechnological Methods
Disease Physiology
Dispersal of Plant Pathogens
Division I – Myxomycota
Eumycota
Factors governing epidemic
Fungi
Fungicides
General principles of plant diseases management
Groups of Fungicides
History of Plant Pathology
Host plant resistance
Important plant pathogenic organisms
Induced structural Defence
Integrated Plant Disease Management (IDM)
Methods of allocation of fungicides
Methods of breeding for disease resistance
Organisms Living in the Soil
Pathogenesis
PGPR – Plant Growth Promoting Rhizobacteria
Phenomenon of infection
Physical Methods – Eradication of Alternate and Collateral Hosts
Plant Disease Epidemiology
Plant Disease Forecasting
Plant Quarantine and Inspection
Plant quarantine methods
Plant viruses
Prokaryotes
Remote sensing
REPRODUCTION IN FUNGI -REPRODUCTIVE STRUCTURES
REPRODUCTION IN FUNGI -SEXUAL REPRODUCTION
Survival of Plant Pathogen
Symptoms of leaf spots, leaf blights, root rots and wilts and disease cycles
Systemic Fungicides and Antibiotics
Terms and Concepts in Plant Pathology
Viroids
Zygomycotina (Mucorales)

Zygomycotina (Mucorales)

Subdivision: Zygomycotina (Mucorales) General characters of Zygomycotina Majority of them are saprobic some are coprophilous some are weak parasites attacking plants. It produces well-developed, branched coenocytic mycelium. Cell wall is composed of chitin –chitosan. Asexual spores are non-motile and are called sporangiospores. Sexual spores are zygospores. Key to the classes of Zygomycotina Class: Zygomycetes Saprobic […]

Viroids

Viroids Viroids area covalently closed circular RNA molecules. Viroids were the first circular RNAs to be discovered in nature. These are the smallest known infectious agents. Potato spindle tuber viroid was the first viroid reported, and it is widely prevalent in different potato growing areas. Citrus exocortis viroid is wide spread in citrus production areas […]

Systemic Fungicides and Antibiotics

Systemic Fungicides and Antibiotics Systemic Fungicides Since the late 1960s there has been substantial development in systemic fungicides. Any compound capable of being freely translocated after penetrating the plant is called systemic. A systemic fungicide is defined as fungitoxic compound that controls a fungal pathogen remote from the point of application, and that can be […]

Symptoms of leaf spots, leaf blights, root rots and wilts and disease cycles

Symptoms of leaf spots, leaf blights, root rots and wilts and disease cycles Leaf Spot In leaf spot a well marked necrotic area of grey, brown, purple or black tissues in green leaves. i. Blast of rice – Pyricularia oryzae Systematic position Sub-kingdom : Mycota Division : Eumycota Sub-division : Deuteromycotina Class : Hyphomycetes Order […]

Prokaryotes

Prokaryotes Phytoplasma Phytoplasmas are small, unicellular, gram-positive non-motile bacteria like prokaryotes intermediate between viruses and bacteria. They differ from true bacteria in the absence of cell wall. Phytoplasma is first observed in the phloem of the mulberry plants infected with dwarf disease. Highly pleomorphic and their size range from small spherical bodies to large irregularly […]