[seesawtron]

>> it could be shown that the melanized fungus C. sphaerospermum can be cultivated in LEO (Low Earth Orbit), while subject to the unique microgravity and radiation environment of the ISS.

I believe this "small scale" experiment was meant as a "proof of concept" to illustrate the idea whether this could be done in house in adverse conditions (unlike Earth's conditions) and could be a potential long term solution for radiation attenuation. I would hope that these somewhat promising results would allow them to conduct a large scale experiment.