Microbiology: Current Research

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Perspective - Microbiology: Current Research (2024) Volume 8, Issue 4

Symbiotic relationships in nature: Microbial partnerships with plants and animals.

Amina Karam *

Department of Biotechnology and Microbiology, Mohammed V University, Morroco

*Corresponding Author:
Amina Karam
Department of Biotechnology and Microbiology, Mohammed V University, Morroco
E-mail: ak.22@um5.ac.ma

Received: 02-Aug-2024, Manuscript No. AAMCR-24-144315; Editor assigned: 05-Aug-2024, PreQC No AAMCR-24-144315 (PQ) Reviewed:19-Aug-2024, QC No. AAMCR-24-144315 Revised:23-Aug-2024, Manuscript No. AAMCR-24-144315 (R); Published:28-Aug-2024, DOI:10.35841/aamcr-8.4.224

Citation: Karam A. Symbiotic relationships in nature: Microbial partnerships with plants and animals. J Micro Curr Res. 2024; 8(4):225

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Introduction

Symbiotic relationships are a fundamental aspect of ecological interactions, where different species live in close proximity, often to the benefit of one or both parties. Among the most intriguing of these relationships are those involving microbes and their plant or animal hosts. These partnerships can range from mutualistic, where both parties benefit, to parasitic, where one party benefits at the expense of the other. Understanding these relationships provides insight into the complexity and interdependence of life on Earth [1].

Plants form a variety of symbiotic relationships with microbes, most notably with fungi and bacteria. Mycorrhizal fungi, for instance, associate with plant roots, forming networks that enhance water and nutrient absorption. In exchange, the fungi receive carbohydrates produced by the plants through photosynthesis. This mutualistic relationship is crucial for plant health and growth, especially in nutrient-poor soils [2].

Another significant plant-microbe partnership involves nitrogen-fixing bacteria, such as those in the genus Rhizobium. These bacteria form nodules on the roots of legumes, where they convert atmospheric nitrogen into a form that the plant can use for growth. This process not only benefits the host plant but also enriches the soil with nitrogen, benefiting other plants in the ecosystem [3].

Endophytes are microbes that live within plant tissues without causing harm. These organisms can provide various benefits, including enhanced resistance to pests and diseases, improved growth, and increased tolerance to environmental stresses such as drought and salinity. For example, endophytic fungi in grasses can produce compounds that deter herbivores, thereby protecting the plant from grazing [4].

In the animal kingdom, symbiotic relationships with microbes are equally diverse and essential. One well-known example is the relationship between ruminants, such as cows and sheep, and the microbes in their guts. These microbes break down cellulose in plant cell walls, allowing the host to digest plant material that would otherwise be indigestible. The fermentation process carried out by these microbes also produces volatile fatty acids, which are a major energy source for the host [5].

The human gut microbiota is another prime example of a beneficial microbial partnership. This complex community of bacteria, archaea, and fungi plays a crucial role in digestion, immunity, and even mental health. Gut microbes help break down complex carbohydrates, synthesize essential vitamins, and protect against pathogenic bacteria. Disruptions to this microbial community have been linked to various health issues, including obesity, inflammatory bowel disease, and mental health disorders [6].

Bioluminescent bacteria form fascinating symbiotic relationships with marine animals such as the Hawaiian bobtail squid. The squid harbors Vibrio fischeri bacteria in a specialized light organ, which the bacteria colonize shortly after the squid hatches. The light produced by these bacteria helps the squid evade predators by mimicking moonlight on the ocean surface, effectively camouflaging the squid. In return, the bacteria receive nutrients and a safe habitat from the squid [7].

Not all symbiotic relationships are beneficial to both parties. Parasitic relationships, where the parasite benefits at the host's expense, are also common in nature. For instance, the parasitic plant Cuscuta (dodder) attaches to host plants and extracts water and nutrients, often causing significant harm to the host. Similarly, pathogenic microbes can cause diseases in plants and animals, leading to a variety of detrimental effects [8].

In commensal relationships, one organism benefits while the other is neither helped nor harmed. An example is the relationship between certain bacteria and the human skin. These bacteria feed on dead skin cells and secretions without affecting the host. In some cases, commensal bacteria can even provide protective benefits by outcompeting pathogenic microbes for resources and space [9].

Microbial symbioses are not just important for individual organisms but also for ecosystem stability and function. For example, the decomposition of organic matter by soil microbes releases nutrients back into the ecosystem, supporting plant growth and maintaining soil health. In aquatic systems, microbial communities play a crucial role in nutrient cycling and water purification [10].

Conclusion

Marine microbes are indispensable to the functioning of oceanic nutrient cycles, influencing the availability and transformation of essential elements. Their metabolic activities drive key biogeochemical processes that sustain marine ecosystems and regulate global climate. Continued research into marine microbial ecology will enhance our understanding of these critical processes and inform strategies for conserving marine biodiversity and mitigating the impacts of climate change.

References

  1. Selosse MA, Baudoin E, Vandenkoornhuyse P. Symbiotic microorganisms, a key for ecological success and protection of plants. Comptes rendus biologies. 2004;327(7):639-48.

    2. Indexed at, Google Scholar, Cross Ref

  2. Zilber-Rosenberg I, Rosenberg E. Role of microorganisms in the evolution of animals and plants: the hologenome theory of evolution. FEMS microbiology reviews. 2008;32(5):723-35.

    3. Indexed at, Google Scholar, Cross Ref

  3. Webster NS. Cooperation, communication, and co-evolution: grand challenges in microbial symbiosis research. Frontiers in microbiology. 2014;5:164.

    4. Indexed at, Google Scholar, Cross Ref

  4. Francis JW. Symbiosis, relationship and the origin of species. In: IN Genesis Kinds: Creationism and the Origin of Species. 2009:163-92.

    5. Google Scholar

  5. Delaux PM, Schornack S. Plant evolution driven by interactions with symbiotic and pathogenic microbes. Science. 2021;371(6531):eaba6605.

    6. Indexed at, Google Scholar, Cross Ref

  6. Rameshwari R. Importance of symbiotic relationships in plants. In: Parasitic Associations (Virus, Bacteria, Fungi). 2024:70.

    7. Google Scholar

  7. Douglas AE. Symbiosis as a general principle in eukaryotic evolution. Cold Spring Harbor Perspectives in Biology. 2014;6(2):a016113.

    8. Indexed at, Google Scholar, Cross Ref

  8. Ciancio A. Symbiotic Relationships. In: Invertebrate Bacteriology: Function, Evolution and Applications. 2016:49-96.

    9. Google Scholar

  9. Dimijian GG. Evolving together: the biology of symbiosis, part 1. Baylor University Medical Center Proceedings. 2000.

    10. Indexed at, Google Scholar, Cross Ref

  10. Hassani MA, Durán P, Hacquard S. Microbial interactions within the plant holobiont. Microbiome. 2018;6:1-7.

    11. Indexed at, Google Scholar, Cross Ref

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