you need to workaround the apparently planetary perchlorate cycle.
Geophysical Research Letters: The origins of perchlorate in the Martian soil.[2017]
https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/201...
A Synthetic Biology Architecture to Detoxify and Enrich Mars Soil for Agriculture[2017]
https://www.nasa.gov/general/a-synthetic-biology-architectur...
you need to workaround the apparently planetary perchlorate cycle.
Geophysical Research Letters: The origins of perchlorate in the Martian soil.[2017]
https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/201...
A Synthetic Biology Architecture to Detoxify and Enrich Mars Soil for Agriculture[2017]
https://www.nasa.gov/general/a-synthetic-biology-architectur...