It is suggested that mycobacteria might be considered as dimorphic organisms in the same sense as some of the human pathogenic fungi are known to be dimorphic. The different types of asexual reproduction are binary fission budding vegetative propagation spore formation (sporogenesis) fragmentation parthenogenesis. In contrast, rapid spore formation leads to a lower spore yield, but these spores have a better chance to revive with new nutrients and grow out new vegetative cells (Figure 2).
SPORE FORMATION SERIAL
A series of phases of development of form 2 cells in the cultures of form 1 organisms in serial smear examination of Löwenstein–Jensen medium cultures is described. Spore formation as a multi-cellular phenomenon includes a trade-off: cell divisions before sporulation increase the total number of spores formed at the end. Thus mycobacteria appear able to grow in two different forms: (a) form 1, which is acid-fast and multiplies by fission only (b) form 2, which is not acid-fast, produces endospores regularly and can be maintained in pure culture on nutrient agar. These organisms when obtained from independent cultures of the same strain appeared to be identical in bacillary and colonial morphology at their first isolation on nutrient agar, but the organisms from different strains showed variation in these characters. dehydration and in the extreme case triggering spore formation. A spore may develop into an organism resembling the parent or into another stage in the life cycle, either immediately or after a period of dormancy. Spores are produced by plants, fungi, bacteria, and some protoctists. When the cultures containing spores were inoculated on nutrient agar plates, endospore-forming, rapidly growing organisms were obtained, which were not acid-fast. Section 3 provides a baseline description of vegetative spore bacteria, non-enveloped. spore A reproductive cell that can develop into an individual without first fusing with another reproductive cell (compare gamete). With the atypical mycobacteria it occurred more readily in cultures in Kirschner fluid medium than on solid media. This process occurred in heavily inoculated Löwenstein–Jensen medium cultures, which were at least 8 weeks old and were frequently aerated during incubation. They do not require any other organism for their reproduction process and in a way are self-sufficient.SUMMARY In studying 8 strains of Mycobacterium tuberculosis and 7 strains of atypical mycobacteria all 15 were found to produce, in addition to the typical acid-fast cells, non acid-fast ones, which gradually developed intracellular spore-like bodies later free-lying spores were seen in the same cultures. In such kinds of organisms, the majority of the sporangia produces haploid spores. One difference between Conidia and oidia is that the former is formed during unfavourable conditions whereas the latter is formed during favourable conditions. Ii) Oidia- these are also formed at the tip of the body but in the presence of excess food material. I) Conidia- these are formed at the tip of the body. These Aplanospores are further divided into two types.
Lower fungi and algae like haematococcus and vaucheria are some examples.
Ii) Aplanospore- these spores do not show motility and are formed from a part of a vegetative cell. Some of its examples are- Chlamydomonas an algae and Albugo fungi. I) Zoospore- these spores show movement due to the presence of flagella however they lack a true cell wall in them. The spores are single-celled minute structures which may be motile in some case whereas non-motile otherwise. Under suitable conditions, these spores germinate to form a new plant. Once these spores mature the sporangia burst and these matured spores reach different areas by air, wind and water. Spore formation is a form of reproduction in which the reproductive bodies called the spores are present in a sac called the sporangia. Gametes thus can be differentiated from these spores which definitely requires fuse with another gamete for reproduction. Spore germinates on a substratum under favourable conditions. A spore is a small spherical or oval structure which protects the future individual in a thick protective covering. This process requires spores, a reproductive cell that is capable of becoming a new plant without undergoing any kind of fusion with any other cell. What is spore formation short answer 7 Spore formation is the method of developing new individuals by forming reproductive structures called spores. Hint: Spore formation is an asexual mode of reproduction.