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Related Concept Videos

Other Algae01:19

Other Algae

49
The group Stramenopiles include some phototrophic microorganisms. Members of this group possess flagella covered in numerous short, hairlike extensions, a feature that inspired the group's name, derived from the Latin words for "straw" and "hair." Some of the main categories of Stramenopiles include diatoms, golden algae, and brown algae.Diatoms are unicellular, photosynthetic eukaryotes, with over 200 known genera. They play a key role in the planktonic communities of both marine and...
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Overview of Algae01:28

Overview of Algae

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The kingdom Archaeplastida encompasses red and green algae, along with land plants. Unlike other protists with chloroplasts that arose through secondary endosymbiosis, only red and green algae originated from primary endosymbiotic events. This diverse group of eukaryotic organisms contains chlorophyll and performs oxygenic photosynthesis.Algae exist in various forms, from large brown kelp in coastal waters to green scum in puddles and stains on rocks or soil. Some species are responsible for...
62
Red Algae01:23

Red Algae

65
Red algae, also known as rhodophytes, are primarily found in marine environments, though some species inhabit freshwater and terrestrial ecosystems. These organisms exist in both unicellular and multicellular forms, with some multicellular varieties reaching macroscopic sizes.As phototrophic organisms, red algae contain chlorophyll a; however, their chloroplasts lack chlorophyll b. Instead, they possess phycobiliproteins, which serve as major light-harvesting pigments, similar to those found in...
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Green Algae01:21

Green Algae

62
Green algae, also referred to as chlorophytes, are different from red algae in having the chloroplasts containing chlorophylls a and b, which give them their distinct green hue. However, they lack phycobiliproteins, preventing them from developing the red or blue-green pigmentation seen in red algae. In terms of photosynthetic pigment composition, green algae closely resemble plants and share a close evolutionary relationship with them. Taxonomically Green algae belong to Phylum Chlorophyta in...
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Diversity of Protists II01:27

Diversity of Protists II

60
Alveolates are a group of organisms recognized by the presence of alveoli, which are cytoplasmic sacs located beneath the cell membrane. While their function remains uncertain, alveoli may help regulate water balance by controlling how much water enters and leaves the cell. In dinoflagellates, these structures may serve as armor plates. There are three major types of alveolates: ciliates, which move using cilia; dinoflagellates, which use flagella for movement; and apicomplexans, which are...
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Bacterial Phylum Cyanobacteria01:30

Bacterial Phylum Cyanobacteria

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Cyanobacteria are a diverse group of oxygenic, phototrophic bacteria that played a pivotal role in converting Earth’s atmosphere from anoxic to oxygen-rich billions of years ago. They exhibit remarkable morphological diversity, ranging from unicellular forms to filamentous types, with cell sizes varying between 0.5 μm and 100 μm. Cyanobacteria are classified into five groups: Chroococcales (unicellular, dividing by binary fission), Pleurocapsales (unicellular, dividing by...
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Related Experiment Video

Updated: Jul 27, 2025

A Novel Bioreactor for High Density Cultivation of Diverse Microbial Communities
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Published on: December 25, 2015

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Symbiotic relationship between filamentous algae (

Ha Eun Lee1, Jun Ho Lee2, Seung Moon Park3

  • 1LED Agri-bio Fusion Technology Research Center, Jeonbuk National University, Iksan-si, Jeollabuk-do, Republic of Korea.

Frontiers in Microbiology
|June 9, 2023
PubMed
Summary

Natural algal mats, composed of Halomicronema sp. and Chlamydomonas sp., offer a cost-effective biomass harvesting solution. Their symbiotic relationship and extracellular polymeric substances (EPS) facilitate self-assembly, reducing production costs.

Keywords:
biomassbiomimetic algal matextracellular polymeric substancefilamentous algaeviscous algae

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Area of Science:

  • Biotechnology
  • Microbiology
  • Sustainable Energy

Background:

  • Microalgae harvesting is costly, driving research into cost-effective alternatives.
  • Natural biofilms and algal mats offer potential for low-cost biomass production and harvesting.

Purpose of the Study:

  • To investigate the composition and formation of naturally agglomerated algal mats.
  • To explore the potential of these mats as a cost-effective biomass harvesting method.
  • To develop a biomimetic algal mat (BAM) system.

Main Methods:

  • Next-generation sequencing to identify key microalgae species.
  • Zeta potential and Fourier-transform infrared spectroscopy to analyze extracellular polymeric substances (EPS) interactions.
  • Ecological biomimetic algal mat (BAM) system design.

Main Results:

  • Halomicronema sp. and Chlamydomonas sp. were identified as key species in natural algal mat formation.
  • A symbiotic relationship between these species, mediated by EPS and calcium ions, was observed.
  • The formation of a solid, floating algal mat was facilitated by EPS-calcium interactions.

Conclusions:

  • Natural algal mats provide a viable, low-cost biomass harvesting strategy.
  • The developed biomimetic algal mat (BAM) system mimics natural processes for efficient biomass production.
  • This approach significantly reduces costs by eliminating the need for separate harvesting treatments.