Beneath the barren surfaces of the Moon and Mars lies a challenge as old as civilization itself: how does life take root where nothing grows? Researchers from the United States and Brazil are proposing an answer drawn not from engineering but from ecology — microscopic fungi that have spent millions of years teaching Earth's plants to survive in scarcity. Published in Frontiers in Astronomy and Space Sciences, their review argues that these ancient biological partnerships could one day transform alien regolith into farmable soil, quietly reframing the question of human settlement beyond Earth
Fungi Could Be Key to Growing Food on Mars and the Moon
Fungi could transform regolith from obstacle into resource
Mark
So fungi are going to farm Mars for us? That seems like a leap.
Mimi
Not farm it for us—help us farm it. The regolith on Mars has almost no nitrogen or phosphorus. Plants can't access what little is there. Fungi form partnerships with roots and act as extensions of the root system. They pull nutrients the plant can't reach.
Luke
But has anyone actually tested this with real Martian soil?
Mimi
No. That's the whole point of the next phase. They've tested with simulations and substitute materials. They've tested some fungi on the International Space Station. But actual regolith? Not yet.
Mark
Why does that matter so much? If it works in simulation, shouldn't it work in reality?
Luke
Martian regolith has been bombarded by radiation for billions of years. It's chemically different from Earth soil. The fungi might behave completely differently. We don't know.
Mimi
Exactly. That's why the researchers are careful about the timeline. They're saying this could work, but it needs real testing first.
Mark
How long until we know?
Mimi
They didn't specify. But they identified fungi like Trichoderma that have already been tested in space. So the groundwork is there.
Luke
And if it does work? What changes?
Mimi
Astronauts could grow food on Mars or the Moon without shipping it all from Earth. That makes long-term settlement actually feasible instead of just theoretical.
Mark
So fungi are the difference between visiting and staying.
Mimi
In a real sense, yes.
El Pulso
- The soil of Mars and the Moon is chemically hostile to crops — stripped of the nitrogen, phosphorus, and potassium that sustain plant life — making food production the quiet existential crisis of any long-term human presence there.
- Shipping food from Earth is neither economically viable nor logistically reliable at the distances and timescales of deep space settlement, creating an urgent pressure to find a way to grow food in place.
- Arbuscular mycorrhizal fungi, which act as microscopic extensions of plant root systems, have already survived microgravity aboard the International Space Station, suggesting they could function in the extreme conditions of space agriculture.
- Species like Trichoderma show particular promise for stress relief in harsh environments, and some fungal varieties can physically and chemically restructure regolith over time — turning an obstacle into a living substrate.
- The critical gap remains untested: all current research relies on simulated regolith, not actual lunar or Martian samples, and real-world trials must come before any operational space farming system can be responsibly designed.
Beneath the barren surfaces of the Moon and Mars lies a challenge as old as civilization itself: how does life take root where nothing grows? Researchers from the United States and Brazil are proposing an answer drawn not from engineering but from ecology — microscopic fungi that have spent millions of years teaching Earth's plants to survive in scarcity. Published in Frontiers in Astronomy and Space Sciences, their review argues that these ancient biological partnerships could one day transform alien regolith into farmable soil, quietly reframing the question of human settlement beyond Earth from one of endurance to one of belonging.
The soil of Mars and the Moon is, by every biological measure, dead — lacking the nutrients plants need and hostile to the conditions life requires. Yet a team of researchers from the United States and Brazil believes the answer to waking it up lies not in chemistry or machinery, but in fungi too small to see with the naked eye.
In a review published this year in Frontiers in Astronomy and Space Sciences, the team made the case for deploying beneficial fungi to transform barren regolith into something capable of sustaining crops. The vision is long-range — real space farming remains decades away — but the underlying logic is pressing: humans living on Mars or the Moon will need to eat, and shipping food from Earth is neither affordable nor dependable at that scale. Growing food in place is the only credible path to self-sufficiency.
The fungi at the center of this proposal work through deep biological partnership. Arbuscular mycorrhizal fungi attach to plant roots and become extensions of them — microscopic threads reaching into soil to pull nutrients the plant cannot access alone. On Earth, they help plants endure poor soils, drought, and stress. The researchers also highlighted Trichoderma, a genus already tested aboard the International Space Station, as particularly suited to relieving the stress plants experience in harsh environments. Crucially, some fungal species don't just improve nutrient uptake — they can alter the physical and chemical structure of regolith itself, gradually making it more hospitable to life.
The gap between laboratory promise and operational reality remains significant. Every study so far has used simulated regolith rather than actual samples from the Moon or Mars. Before astronauts can plant crops and expect them to grow, scientists must test these organisms against material that has never hosted life, has been bombarded by radiation, and is fundamentally alien to Earth's biology.
If those tests succeed, the implications reach far beyond agriculture. Fungi could reduce the tonnage of food that must be launched from Earth, transform regolith from a barrier into a resource, and shift the nature of human presence beyond our planet — from temporary visits to something more like home.
The dirt on Mars and the Moon is dead. It lacks the nitrogen, potassium, and phosphorus that plants need to grow. It is hostile to life. Yet researchers in the United States and Brazil believe they have found a way to wake it up—not with chemicals or machines, but with fungi so small you cannot see them without a microscope.
In a review published this year in Frontiers in Astronomy and Space Sciences, the team laid out a case for using beneficial fungi to transform the barren regolith of other worlds into something capable of sustaining crops. The vision is not imminent. Real space farming remains decades away. But the science is moving forward, and the stakes are clear: if humans are going to live on Mars or the Moon for any length of time, they will need to eat. Shipping food from Earth is expensive and unreliable. Growing it in place is the only path to self-sufficiency.
The fungi in question work through a partnership so intimate it borders on symbiosis. Arbuscular mycorrhizal fungi, or AMF, have been studied by botanists since the middle of the nineteenth century. When they attach to plant roots, they become extensions of the root system itself—microscopic fingers reaching into the soil, pulling nutrients the plant cannot access on its own. On Earth, these fungi are everywhere. They help plants thrive in poor soils, in drought, under stress. They are, in essence, nature's solution to scarcity.
The researchers identified several fungal species with particular promise. Trichoderma stands out for its ability to relieve the stress that plants experience in harsh environments. Certain varieties of AMF have already been tested aboard the International Space Station, proof that they can survive in microgravity and continue their work. The fungi do not just improve nutrient uptake. They can also alter the physical and chemical structure of the regolith itself, making it more hospitable to life over time.
But there is a gap between laboratory promise and operational reality. The studies so far have relied on simulations and substitute materials—not actual samples of lunar or Martian soil. Before astronauts can plant crops in regolith and expect them to grow, scientists will need to test these fungi against the real thing. They will need to know how the microbes behave when introduced to material that has never hosted life, that has been bombarded by radiation, that is fundamentally alien to Earth's biology.
If those tests succeed, the implications are substantial. Fungi could allow space farmers to grow larger, more reliable crops while dramatically reducing the tonnage of food that must be launched from Earth. They would transform regolith from an obstacle into a resource. They would make human settlement beyond Earth not just possible but sustainable—a shift from visiting other worlds to living in them.
The work ahead is methodical and uncertain. But the researchers see in these tiny organisms a biotechnological tool that could reshape the future of space exploration. The fungi are waiting. The question now is whether they will work when it matters most.
Citas Notables
Including plant growth-promoting fungi into lunar or Martian regolith-based agriculture systems would present a strategic enhancement to space crop production and the establishment of human settlements beyond Earth.— Research team conclusion in Frontiers in Astronomy and Space Sciences
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