Tag Archives | Microbiology

Process of Nitrogen Fixation in Microorganisms | Microbiology

In this article we will discuss about the process of nitrogen fixation in microorganisms. The symbiotic association of cyanobacteria with fungi (lichen), cyanobacteria with bryophytes (Anthoceros), with pteridophytes, (Azolla) with gymnosperms (coralloid root of Cycas) and bacteria (Rhizobium Brady-rhizobium, Azorhizobium, Sino-rhizobium, Ensifer and Mesorhizobium etc.) with leguminous plants are under mutual beneficial relationship (symbiosis) in which both the host and [...]

By |2016-11-28T11:04:41+00:00November 28, 2016|Microorganisms|Comments Off on Process of Nitrogen Fixation in Microorganisms | Microbiology

Transmission of Plant Viruses: 8 Modes | Microbiology

The following points highlight the eight modes of transmission of plant viruses. The modes are: 1. Mechanical Transmission 2. Vegetative and Graft Transmission 3. Pollen Transmission 4. Seed Transmission 5. Nematode Transmission 6. Fungal Transmission 7. Insect Vector Transmission 8. Dodder Transmission. Mode # 1. Mechanical Transmission: In nature plant viruses are mechanically transmitted from diseased to healthy plants by [...]

By |2016-11-28T11:04:41+00:00November 28, 2016|Plant Viruses|Comments Off on Transmission of Plant Viruses: 8 Modes | Microbiology

Viroids: Origin, Meaning and Replication | Microbiology

In this article we will discuss about:- 1. Origin of Viroid 2. Meaning of Viroids 3. Viroid Genome 4. Replication. Origin of Viroid: So far no sufficient information is available that can lend support for the origin of viroids. Following are some of the speculations regarding the origin of viroids: (a) Viroids are supposed to be the primitive viruses and [...]

By |2016-11-28T11:04:41+00:00November 28, 2016|Plant Viruses|Comments Off on Viroids: Origin, Meaning and Replication | Microbiology
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