DominicPawinski says
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I believe co culture is vital as all living enterties live in symbiosis. This research will benifit all in many applications.
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I am not aware any plants that are co cultured. Can someone enlighten me?

As it is it is pretty difficult to contain contamination of a single species and wouldnt it be difficult to managae two cultures at the same time ?

Yes, I think so. Try it to see if it works.

@AlgaeMaffiosi

Could be both.

Cambridghe in there video refer to symbiotic relationship between Algae & Bacteria. Further research should show up a simular relationship between certain algae. This is the type of research Univ. are setup to do.

What kind of yield are we talking about? biomass yield on substrate? biomass yield on oil?

I agree with Aishwarya.
I add also that when I read on a good team for starting an algae based company there is also the requirement of a “marine biologist”. Why there should be this need ? In my opinion to transfer into technological process what developed with millions of years evolution

Is there some database or knowledgebase that provides a list of such co-cultures that are already existing in nature? If there are many such naturally available cultures, that would be a great starting point to figure out how to exploit them for biofuel production as well.

In the remediation of wastewater the ablity to grow multiple varieties would give you a wider spectrum of cleansing. That would be far better than having to run wastewater thru multiple pbr's to clear the water. Certain algae have very different needs that can be supplied by the same wastewater.

Definitely! There is a lot of scope for obtaining a high biomass yield by co-culturing microalgae and cyanobacteria.
For instance, lets consider the various diatom species that contain intracellular cyanobacteria as symbionts. There have been cases of massive diatom blooms that were found growing with free-living and symbiotic cyanobacteria.
Growth of diatoms can be enhanced when co-cultured with suitable cyanobacteria.
These cyanobacteria are known to fix Nitrogen and CO2 for their host both of which are important factors for larger blooms of microalgae. But, what they get in return from their host is still not clearly understood. Maybe they obtain some metabolites or simply protection from predation.
Lets not forget that diatoms are pontential sources for biofuel production and so..there is lot of scope for research in this area of diatom-cyanobacteria symbioses in terms of interest in producing larger blooms of the microalgae and ultimately high yield of biomass for biofuel production. If the right species of host and symbiont are identified for co-culturing in defined culture media, it will greatly benefit the field of bioenergy.
Why not promote larger blooms of microalgae by conforming with (or making use of ;)) nature's laws?

In these cases the biggest worry is one species affecting the others growth.

Although let's remember they grow symbiotically in the OCEAN, meaning mostly macroalgae. Microalgae is, in most cases, the one of interest right now. Does this simultaneous growth occur as often with microalgae of interest for algae oil (etc.)? that is the question that must be answered here. If possible, I see no harm in trying. Well maybe except $$$ (money-wise), but this is how this phase works.