In this article we will discuss about the life cycle of plasmodiophora brassicae with the help of suitable diagrams. Cook and Swartz (1930) showed that the life cycle of P. brassicae comprises two distinct phases, the haplophase (primary phase) and the diplophase (secondary phase). The former occurs in the root hairs and the latter in the cells of the main [...]
In this article we will discuss about the general features of lower fungi. The lower fungi comprise the simplest and the primitive group of true fungi represented by about 1,500 species. The majority of these are aquatic (Saprolegnia), some are amphibious (Phytophthora) and some terrestrial (Rhizopus). They live either as strict parasites or saprophytes. Strictly parasitic species live on algae, [...]
In this article we will discuss about the ways of zygospore germination in lower fungi. (a) The diploid contents of the zygospore (A) undergo meiosis but meiospores are not formed. The zygospore containing the haploid protoplast then directly germinates to give rise to new haplomycelium (B). Monoblepharis is an example. Rarely as in Allomyces, the diploid zygospore (C) germinates by [...]