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Screening of Microbes for Marine Biofertilizer

Marine biofertilizers can be defined as living organisms, primarily bacteria, fungi or algae, that increase the supply of essential nutrients in the soil that are readily available to host plants for plant growth. Marine biofertilizers are non-polluting, environmentally friendly options that do not harm the environment and can increase plant yields by 15-35%. Biofertilizers are inexpensive, efficient and renewable sources of plant nutrients. While chemical fertilizers are readily available with good transport facilities, extreme and long-term use of chemical fertilizers is a growing problem with several detrimental effects on the environment, namely decreased productivity, soil fertility and soil structure. Therefore, biological fertilizers are the best substitute for chemical fertilizers. Biofertilizer organisms should be specific strains of microorganisms such as bacteria, fungi, algae or combinations thereof. Therefore, in order to prepare marine biofertilizers, microorganisms with this potential need to be screened from marine microbial populations. In vitro screening follows a specific protocol to isolate the desired microorganisms from the entire occupant.

Utilization of microbial consortia as biofertilizers and biopesticides for the production of feasible agricultural product.Fig. 1 Utilization of microbial consortia as biofertilizers and biopesticides for the production of feasible agricultural product (Seenivasagan R, et al., 2021)

Our Services

CD BioSciences supports the development of screening technologies for various microorganisms used in marine biofertilizers. Depending on their target, different microbiota and bacteria can be studied in complex marine environments. Understanding microbial physiology is obviously crucial during marine microbial culture. CD BioSciences provides screening services of marine microorganisms, and our services are listed as follows, but are not limited to:

  • Screening microbes for phosphate solubilization
  • Screening microbes for potassium solubilizing
  • Screening microbes for nitrogen-fixing
  • Screening microbes for zinc solubilization
  • Screening microbes for ammonia production
  • Screening microbes for hydrogen cyanide (HCN) production
  • Screening microbes for siderophores
  • Screening microbes for auxin production
  • Screening microbes for gibberellic acid production
  • Screening microbes for production of chitinase

Our Screening Techniques for Marine Microorganisms

Microbial screening provides very useful information on newly isolated microorganisms that can be used in the production of commercially valuable marine microbial fertilizers.

  • Primary Screening of Microorganisms
    • The crowded plate technique
    • Indicator dye technique
    • Enrichment culture technique
    • Auxanographic technique
  • Secondary Screening of Microorganisms
    • Giant Colony Technique
    • Filtration Method
    • Liquid Medium Method

Types of Our Marine Biofertilizers

Biofertilizers are divided into different categories based on the types of microorganisms involved:

  • Bacterial biofertilizers
  • Fungal biofertilizers
  • Algal biofertilizers

Microbes as Biofertilizer Sources

Screening of Microbes for Marine Biofertilizer

The types of microorganisms used as Marine biofertilizers are as follows:

  • Rhizobium
  • Azospirillum
  • Cyanobacteria
  • Azotobacter
  • Blue-Green Algae (BGA)
  • Mycorrhizal fungi
  • Azolla

CD BioSciences is a professional service provider for the marine biology industry. Our screening services of marine microorganisms can ensure that the most suitable methods and techniques are selected for your project. We provide our customers with the most precise ingredient data and highly informed process expertise. Our team of biomass experts plays a key role in the formulation, optimization and commercial evaluation of biomass value-added processes in industry and academia. If necessary, please feel free to contact us.


  1. Seenivasagan R, Babalola O O. Utilization of microbial consortia as biofertilizers and biopesticides for the production of feasible agricultural product[J]. Biology, 2021, 10(11): 1111.

Please kindly note that our services can only be used to support research purposes (Not for clinical use).

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