The following points highlight the top five evolutionary trends on Oomycetes. 1. There is progressive evolution from the aquatic to land habitat. Members of orders Lagenidiales, Saprolegniales and Leptomitales are chiefly aquatic. The advanced order Peronosporales includes aquatic, amphibious and terrestrial forms. 2. The representatives of this class show a whole range from saprophytes (Saprolegnia) to facultative parasites (Pythium) and [...]
In this article we will discuss about:- 1. Introduction to Zygomycetes 2. Distinctive Features of Zygomycetes 3. Classification. Introduction to Zygomycetes: The class zygomycetes derives its name from the thick-walled resting spores, the zygospores formed as a result of the complete fusion of the protoplasts of two equal or unequal gametangia. It comprises 450 species which are grouped under 70 [...]
In this article we will discuss about:- 1. Occurrence of Claviceps Purpurea 2. Distribution of Claviceps Purpurea 3. Primary Infection Caused 4. Hyphal Structure 5. Differentiation of Sclerotium 6. Dispersal of Sclerotia 7. Germination of Sclerotium 8. Reproduction 9. Host-Parasite Relationship 10. Control of the Disease 11. Economic Importance. Contents: Occurrence of Claviceps Purpurea Distribution of Claviceps Purpurea Primary Infection [...]