Cultures and Strains

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Detailed sequencing of Cultures and Strains

Whole genome sequencing (WGS) revolutionizes our understanding of microbial cultures. By analyzing the complete genetic blueprint of a microorganism, we gain unparalleled insights into its taxonomy, traits, and functional potential.

At Biomcare, we use WGS to unlock the full potential of microbes for agricultural innovation, offering detailed and actionable information on isolated strains.

Why Sequence Microbes in Culture?

  • Characterizing Beneficial Strains:
    Identify and validate microbes that promote plant growth, protect crops from pathogens, or enhance soil fertility. For example, nitrogen-fixing bacteria can reduce the need for chemical fertilizers, while biocontrol agents can suppress harmful fungi.
  • Ensuring Strain Purity:
    Confirm the identity and purity of microbial strains used in agricultural formulations to prevent contamination or performance variability.
  • Developing Probiotics:
    Analyze probiotics intended for livestock or plants to assess their safety, effectiveness, and potential for improving health or productivity.
  • Bioremediation Applications:
    Study microbes capable of breaking down pollutants or improving soil conditions, ensuring they have the necessary genes for targeted applications.
  • Understanding Pathogenicity:
    Investigate plant pathogens to identify virulence factors, resistance genes, and potential vulnerabilities for control strategies.
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Biomcare offers both microbiome services for small discovery projects, as well as large custom-designed microbiome projects.

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What Information Does Sequencing Provide?

Whole genome sequencing offers a depth of information far beyond traditional methods like microscopy or basic culturing techniques:

  1. Taxonomic Precision: WGS can differentiate between closely related strains, accurately identifying species and subspecies levels that may be indistinguishable by morphology.
  2. Functional Insights: Sequencing reveals genes associated with specific traits, such as:
    • Enzyme production (e.g., cellulases or nitrification enzymes)
    • Antimicrobial activity
    • Stress tolerance (e.g., drought or salinity resistance)
    • Nutrient cycling capabilities (e.g., nitrogen fixation)
  3. Antibiotic Resistance Profiling:
    Detect genes responsible for antibiotic resistance, ensuring safety when using microbial strains in agricultural environments.
  4. Genomic Comparisons:
    Compare genetic content across different strains to identify unique features or adaptive traits relevant to specific agricultural applications.
  5. Ecosystem Compatibility:
    Assess the compatibility of microbial strains with existing ecosystems by analyzing their metabolic pathways and potential interactions

Advantages Over Traditional Methods

  • Microscopy:
    While microscopy provides a physical view of microorganisms, it cannot reveal genetic variations or functional traits critical to agricultural applications.
  • Culturing Alone:
    Culturing techniques are limited to a fraction of microbes that grow under lab conditions, missing many important details about taxonomy and function.
  • Biochemical Testing:
    Traditional assays give limited functional insights, while WGS provides a comprehensive picture, including potential metabolic pathways and adaptation mechanisms.

Whole genome sequencing bridges these gaps, offering a holistic and high-resolution understanding of microbial cultures.

Tailored Solutions for Agriculture

At Biomcare, we collaborate with researchers and agricultural stakeholders to deliver customized sequencing services. Whether you are developing microbial fertilizers, studying crop pathogens, or advancing sustainable farming practices, our tools provide the insights needed to succeed.

Unlock the potential of microbial strains with Biomcare’s cutting-edge genomic solutions. Let us help you harness the power of microbes for a healthier, more sustainable future.

We can screen a strain for a range of different functional properties of relevance to agriculture. Below is a list of some of these functional categories and more detailed examples for two key functions namely “Nitrogen Fixation” and “Micronutrient Mobilization”

Functional categories

  1. Nitrogen Fixation
  2. Nitrogen Release
  3. Phosphorus and Potassium Solubilization
  4. Hormone Production
  5. Antibiotic Production
  6. Micronutrient Mobilization
  7. Stress Adaptation
  8. Organic Matter Degradation
  9. Carbon Cycling
  10. Sulfur Cycling
  11. Quorum Sensing
  12. Virulence Factors
  13. Detoxification and Bioremediation

Nitrogen fixation

Table of Nitrogen fixation Genes

Gene Function Presence
nifH Nitrogenase iron protein
nifD Nitrogenase molybdenum-iron protein alpha chain
nifK Nitrogenase molybdenum-iron protein beta chain
nifE Assembly of the nitrogenase MoFe-cofactor
nifN Assembly of the nitrogenase MoFe-cofactor
nifB Synthesis of the iron-molybdenum cofactor
nifV Homocitrate synthesis
nifQ Molybdenum incorporation into FeMo-cofactor
nifX Assembly and stabilization of the nitrogenase
nifW Assembly and stabilization of the nitrogenase
nifZ Assembly and stabilization of the nitrogenase
nifS Biosynthesis of iron-sulfur clusters
nifU Assembly of iron-sulfur clusters
nifL Regulation of nif gene expression
nifA Regulation of nif gene expression

Overall Nitrogen Fixation Capacity Estimate

Based on the presence of the genes involved in nitrogene fixation, the nitrogen fixation capacity is as follows:

  • Total Nitrogen Fixation Genes Identified: 11 out of 15
  • Percentage of Essential Nitrogen Fixation Genes Present: 73.3%

Interpretation of Results

  • High Capacity for Nitrogen Fixation: The analyzed strain contains a majority of the essential genes required for nitrogen fixation, indicating a high potential for nitrogen fixation activity. Specifically, the core nitrogenase genes (nifH, nifD, nifK) and several key assembly and regulatory genes are present.
  • Missing Genes: The absence of some auxiliary genes like nifQ, nifW, and nifZ might suggest potential limitations or the need for additional verification and functional validation.

Micronutrient Mobilization

Table of Micronutrient Mobilization Genes

Gene/Cluster

Micronutrient

Function

Presence

Siderophore synthase

Fe

Siderophore biosynthesis, iron mobilization

Siderophore transporter

Fe

Siderophore transport, iron mobilization

znuABC

Zn

High-affinity zinc uptake system

zur

Zn

Zinc uptake regulation

mntH

Mn

Manganese transporter

sitABCD

Mn

Manganese transport system

cys genes

S

Sulfur assimilation and metabolism

ChaA

Ca

Calcium transport

copA

Cu

Copper-transporting ATPase

copB

Cu

Copper-transporting ATPase

cueO

Cu

Multi-copper oxidase

mgtA

Mg

Magnesium transport

mgtB

Mg

Magnesium transport

 

Iron (Fe) Mobilization

Siderophore biosynthesis genes (siderophore synthase, siderophore transporter): Genes involved in the synthesis and transport of siderophores which chelate and mobilize iron.

  • Total Iron Mobilization Genes Identified: 2 out of 2
  • Percentage of Iron Mobilization Genes Present: 100%

Zinc (Zn) Mobilization

High-affinity zinc uptake system genes (znuABC) and zinc uptake regulation gene (zur).

  • Total Zinc Mobilization Genes Identified: 2 out of 2
  • Percentage of Zinc Mobilization Genes Present: 100%

Manganese (Mn) Mobilization

Manganese transporter gene (mntH) and manganese transport system genes (sitABCD).

  • Total Manganese Mobilization Genes Identified: 1 out of 2
  • Percentage of Manganese Mobilization Genes Present: 50%

Sulfur (S) Mobilization

Genes involved in sulfur assimilation and metabolism (cys genes).

  • Total Sulfur Mobilization Genes Identified: 1 out of 1
  • Percentage of Sulfur Mobilization Genes Present: 100%

Calcium (Ca) Mobilization

Calcium transporters (e.g., ChaA, MgtE): Genes encoding calcium transport proteins.

  • Total Calcium Mobilization Genes Identified: 1 out of 1
  • Percentage of Calcium Mobilization Genes Present: 100%

Copper (Cu) Mobilization

Copper-transporting ATPase genes (copA, copB) and multi-copper oxidase gene (cueO).

  • Total Copper Mobilization Genes Identified: 2 out of 3
  • Percentage of Copper Mobilization Genes Present:7%

Magnesium (Mg) Mobilization

Magnesium transport genes (mgtA, mgtB).

  • Total Magnesium Mobilization Genes Identified: 1 out of 2
  • Percentage of Magnesium Mobilization Genes Present: 50%

Interpretation of Results

  • High Capacity for Iron, Zinc, Sulfur, and Calcium Mobilization: The analyzed strain contains all the key genes required for the mobilization of these micronutrients, indicating strong potential for these activities.
  • Moderate Capacity for Copper Mobilization: The presence of copA and cueO but the absence of copB suggests moderate potential for copper mobilization.
  • Moderate Capacity for Manganese and Magnesium Mobilization: The presence of some, but not all, key genes suggests moderate potential for mobilization of these micronutrients.

Working with Dr. Louise Thingholm and Biomcare on our study of the relationships between iron and the gut microbiome has been a great experience. Louise brought unparalleled expertise in the analysis and interpretation of the microbiome data, guiding us through the complexities along each step. 

Her user-friendly visualizations and clear interpretations allowed us to communicate our findings effectively to both scientific audiences and stakeholders. Moreover, her responsiveness and collaborative approach made the whole process seamless, addressing challenges promptly and adapting to the unique needs of our study.

Thanks to her support, we were able to meet project deadlines and significantly enhance the quality of our research. I would work with her again in the future, and highly recommend Biomcare to anyone seeking expert assistance in microbiome data analysis.

Diane M. Dellavalle
PhD, RDN, LDN, Professor of Nutrition

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