The below mentioned article provides notes on microbial diversity. The term 'microbial diversity' or biodiversity has become so well known that a public servant is also aware about it. Microbial diversity is defined as the variability among living organisms. The main key of microbial diversity on earth is due to evolution. The structural and functional diversity of any cell represents [...]
The following points highlight photoautotrophs and chemoautotrophs types of microorganisms that are based upon the source of electron. Type # 1. Photoautotrophs: Photoautotrophs include the photosynthetic bacteria, algae and green plants. These organisms fix carbon utilizing the energy of solar radiations through a process called photosynthesis. They are also called the primary producers of simple procedures because such organisms are [...]
In this article we will discuss about the genetics of nitrogen fixing microorganisms. 1. Bacterial Nodulation Genes and Regulation of nod Gene Expression: In Rhizobium species, nodulation genes together with other symbiotic genes are located on large-plasmids (Sym plasmids). Sym plasmids vary from 50 to over 600 kb in R. leguminosarum bv. trifoli to 1200 to 1500 kb in R. [...]