1 July 2024

Microbial Diversity in the Animal Kingdom

Nimra Ather1, Hifza Ather2, Muhammad Abdullah3

1 Department of Zoology, University of Agriculture Faisalabad Punjab Pakistan

2 Department of Dairy Science, University of Agriculture, Faisalabad Punjab Pakistan

3 Department of DVM, University of Veterinary and Animal Sciences (UVAS) Lahore

Abstract:

A Zoological Perspective” explores the significance of comprehending the diversity of microbes found in mammals. Understanding these microbes can help us better understand animals’ biological processes, evolution, and health. The role of microbial diversity in animal physiology, including digestion, immunity, and reproduction. This blog concludes by emphasizing the need for further research into the microbial diversity of animals, particularly those that are understudied or endangered.

Introduction:

A common and crucial element of the animal kingdom is microorganisms. Through their participation in cycling nutrients, immunity, digestion, and disease prevention, they play a significant role in preserving the good health of animals, especially humans. (Leyet al., 2008). Despite their significance, a sizable fraction of the animal kingdom’s microbial diversity is yet unknown (Bäckhed et al., 2005).

Recent developments in bioinformatics and sequencing technologies have made it possible to explore the microbial world in greater detail Foster and McVey. (2013). New understandings about the function of these microbes in animal disease and health have emerged as a result of researchers’ efforts to discover the hidden diversity of microbes within animals. (Weisset al., 2017).

In this blog, we will review the recent developments in our knowledge of how microorganisms affect animal health and disease.

Microbial diversity in invertebrates: Diverse animals without a spine or backbone are known as invertebrates. Nearly all of the environments on Earth contain them, and numerous organisms have intricate interactions with them (Buchsbaum et al., 2013). Invertebrate-associated microbial communities can be quite varied and significantly impact the ecology and well-being of their hosts.

The gut microbiome of insects is one of the well-studied instances of the diversity of microbes in invertebrates. Due to their highly specialized guts, insects can take nutrition from many kinds of plants and animals. These complicated food sources must be digested by the microbial communities found in the insect’s gut, which may also aid in the insect’s defense against hazardous diseases.

Diverse microbial communities are also crucial to the survival of other invertebrates, like corals and sponges. These bacteria may even contribute to the development of coral reefs. They can aid in the breakdown of nutrients, offer immunity to disease, and assist protect against it (Martinson et al., 2020).

Microbial diversity in vertebrates: The wide range of microorganisms found in a specific habitat is known as microbial diversity. Microbial diversity in the context of vertebrates refers to the variety of microorganisms that inhabit or are present on the bodies of creatures with backbones (Fierer, N. (2008).

Microbes, fungi, viruses, and other kinds of single-celled organisms are examples of these microorganisms. The enormous microbial variety seen in vertebrates is crucial to the health and welfare of the host animal. Microorganisms have a role in functions like immunity, digestion, and the synthesis of chemicals like vital vitamins.

A large element of the diversity of microbes in vertebrates is the gut microbiome. The group of microbes that live in the gastrointestinal system of animals is referred to as the gut microbiome. It has been demonstrated that this community of bacteria is crucial for immune system control, nutritional absorption, and general health.

Vertebrate microbial diversity research has shown that various animal taxa can have remarkably distinct microbial communities. The microbiological diversity of an animal can be influenced by a variety of elements, including nutrition, habitat, and evolutionary history. Overall, the investigation of the variety of bacteria in vertebrates is a crucial field of study that can aid in our understanding of the intricate relationships that exist between microbes and the animals that serve as their hosts (Rivera et al., (2017).

Gut microbiota and host health: The diverse community of bacteria that live in the gastrointestinal system is referred to as the gut microbiota, and it is crucial to the health of the host. Numerous physiological systems, including digestion, metabolism, immunological response, and even brain function, are influenced by gut bacteria (Thursby, E., & Juge, N. (2017).

Numerous health issues, like inflammatory bowel disease, also known as a condition known as irritable bowel syndrome, obesity, and even neurological diseases like depression and anxiety, have been linked in studies to dysbiosis, or abnormalities in the gut microbiota.

Although the biological processes that underlie these associations are not fully understood, it is believed that the gut microbiota may have an impact on host health through a number of pathways, such as the production of bioactive substances, the control of inflammation and immune response, and the modification of the gut barrier.

There is considerable interest in creating methods to modify the microbiota for therapeutic purposes given the significance of the gut microbiota in host health (Lee, W. J., & Hase, K. (2014).

Microbial diversity and biotechnology: The utilization of live organisms or their byproducts for industry or commercial reasons is known as biotechnology, and microbial diversity is crucial to this field of study. In biotechnology, microorganisms including bacteria, fungi, and viruses have been employed to create a variety of goods, including antibiotics, enzymes, nutrients, and biofuels.

Microorganisms are a key component of biotechnology because of their quick reproduction and adaptability to a variety of environmental factors (Saeed et al., (2022). This makes it possible to produce valuable substances like proteins and chemicals in big numbers efficiently. Additionally, a variety of metabolic processes that are not achievable using conventional chemical processes can be carried out by microorganisms.

A huge pool of prospective candidates for applications in biotechnology is also made available by the enormous diversity of microorganisms found in nature. New strains of viruses, fungi, and bacteria are constantly being discovered by scientists; each one has distinct metabolic properties that could be used in industrial processes.

Additionally, microbes can be altered to create more particular chemicals via genetic engineering approaches. Overall, the study of microbial variety has made a significant contribution to the growth of the field of biotechnology and it continues to be a fertile field of study for the identification of fresh breakthroughs and applications (Rafeeq et al., 2023).

Challenges and future directions: Animal kingdom microbial diversity research is a rapidly developing area with many opportunities and problems. The size and complexity of animal microbial communities, which can contain numerous species with unique roles and interactions, is one of the biggest obstacles.

Accurately identifying and characterizing these bacteria, which necessitates sophisticated sequencing and analytical techniques, is another problem (Magurran, A. E., & McGill, B. J. (2010).  Despite these difficulties, there are lots of fascinating chances to study in this area. For instance, research on animal microbiomes can reveal details regarding their physiological research, behavior, and evolutionary history.

In addition to their role in preventing and treating disease, microbes can have significant effects on animal health. To better comprehend the functional roles played by particular bacteria within the animal microbiomes is one future path in this subject. For investigating and manipulating specific microbial species in complex ecosystems, new methods will need to be created.

Overall, the investigation of microbial diversity within the animal kingdom is a fast-growing developing topic with a wide range of difficulties and chances for further study. As we learn more about these intricate microbial communities, we may create new theories about the biology and evolution of animals as well as fresh approaches to enhancing the health and welfare of animals (Torsvik, V., & Øvreås, L. (2002).

Conclusion: 

In conclusion, research into the diversity of microbes found in the world of animals is a rapidly expanding subject that has produced a number of fascinating and unexpected findings. Animal physiological science, development, behavior, and evolution are greatly influenced by microbes, and their relationships with their animal hosts are intricate and multidimensional.

The microbial variety of animals is significantly more diverse than previously believed, which is one of the main conclusions of this study. The constantly changing makeup of microbial communities is a significant element of animal microbial diversity.

We can learn more about the intricate interactions among animals and their microbial symbiotic and apply this knowledge to enhance human and animal health, the agricultural sector, and sustainable development by continuing to investigate the hidden world of mammal-associated microorganisms.

References:

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Buchsbaum, R., Buchsbaum, M., Pearse, J., & Pearse, V. (2013). Animals without backbones: an introduction to the invertebrates. University of Chicago Press.

Fierer, N. (2008). Microbial biogeography: patterns in microbial diversity across space and time. Accessing uncultivated microorganisms: from the environment to organisms and genomes and back, 95-115.

Foster, J. A., & McVey Neufeld, K. A. (2013). Gut-brain axis: how the microbiome influences anxiety and depression. Trends in Neurosciences, 36(5), 305-312.

Lee, W. J., & Hase, K. (2014). Gut microbiota–generated metabolites in animal health and disease. Nature chemical biology10(6), 416-424.

Ley, R. E., Lozupone, C. A., Hamady, M., Knight, R., & Gordon, J. I. (2008). Worlds within worlds: evolution of the vertebrate gut microbiota. Nature Reviews Microbiology, 6(10), 776-788.

Magurran, A. E., & McGill, B. J. (Eds.). (2010). Biological diversity: frontiers in measurement and assessment. OUP Oxford.

Martinson, V. G., Gawryluk, R. M., Gowen, B. E., Curtis, C. I., Jaenike, J., & Perlman, S. J. (2020). Multiple origins of obligate nematode and insect symbionts by a clade of bacteria closely related to plant pathogens. Proceedings of the National Academy of Sciences117(50), 31979-31986.

Rafeeq, H., Afsheen, N., Rafique, S., Arshad, A., Intisar, M., Hussain, A., … & Iqbal, H. M. (2023). Genetically engineered microorganisms for environmental remediation. Chemosphere310, 136751.

Rivera-Pérez, C., Clifton, M. E., & Noriega, F. G. (2017). How micronutrients influence the physiology of mosquitoes. Current opinion in insect science23, 112-117.

Saeed, M. U., Hussain, N., Shahbaz, A., Hameed, T., Iqbal, H. M., & Bilal, M. (2022). Bioprospecting microalgae and cyanobacteria for biopharmaceutical applications. Journal of Basic Microbiology62(9), 1110-1124.

Thursby, E., & Juge, N. (2017). Introduction to the human gut microbiota. Biochemical journal474(11), 1823-1836.

Torsvik, V., & Øvreås, L. (2002). Microbial diversity and function in soil: from genes to ecosystems. Current opinion in microbiology5(3), 240-245.

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