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Diatom-Bacteria Interactions: Ecological Significance and Industrial Applications

Alrubaiaan, Entesar

eScholarship, University of California 2024

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  • Título:
    Diatom-Bacteria Interactions: Ecological Significance and Industrial Applications
  • Autor: Alrubaiaan, Entesar
  • Assuntos: Biology
  • Descrição: Phytoplankton and bacteria play a crucial role in the maintenance and stability of aquatic ecosystems. Together, they facilitate nutrient cycling and gas exchange, supporting the nutritional needs of higher trophic-level species. Recent molecular biology advancements have highlighted species-specific associations between the two groups. In some cases, these associations are mutualistic, benefiting the algal host. In exchange for carbon, it was reported that specific bacteria can provide vitamins and hormones and increase the bioavailability of limited nutrients to their phytoplankton host. These exchanges aid in sustaining the algal host in stressful environmental conditions. This study uses omics tools and co-culture experiments to explore the associations between diatoms, a phytoplankton group with ecological and industrial significance, and their microbiome. We aimed to leverage the knowledge of phytoplankton-bacteria interactions to optimize the utilization of diatom in biotechnological applications in Chapters 1 and 2. Diatoms can accumulate valuable biomolecules that can be utilized in fuel and food industries if produced in high biomass and a cost-effective manner. This work focused on studying diatom-microbiome interactions in large-scale cultivations. In Chapter 1, We reported a significant role of cultivation conditions in shaping the microbial community and the presence of specific bacteria that can be candidates for microbiome manipulation efforts to increase biomass. In Chapter 2, we reported that microbiome manipulation could increase algal biomass and the cost-effectiveness of algal farming as a sustainable alternative to traditional food and energy sources.Further, Chapter 3 presents compelling evidence of the species-specific modulation and response of two diatom species to natural microbial communities, highlighting the benefits of the modulated microbiomes. The results of this study hold substantial promise for advancing our understanding of diatom-microbe interactions in their natural habitats. The field of phytoplankton-bacteria associations offers numerous avenues for identifying ecologically significant associations, which, in turn, facilitate a deeper understanding of the underlying dynamics governing these interactions. Moreover, such research holds immense potential in developing and optimizing novel energy and food sources, which is becoming increasingly crucial in the current scenario. The work presented herein represents a noteworthy contribution towards enhancing our knowledge of these complex associations.
  • Editor: eScholarship, University of California
  • Data de criação/publicação: 2024
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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