The International Potato Center (CIP) launched a series of experiments to discover if potatoes can grow under Mars atmospheric conditions and thereby prove they are also able to grow in extreme climates on Earth.
The Potatoes on Mars project was conceived by CIP to both understand how potatoes might grow in Mars conditions and also see how they survive in the extreme conditions similar to what parts of the world already suffering from climate change and weather shocks are already experiencing.
“Growing crops under Mars-like conditions is an important phase of this experiment,” says Julio Valdivia-Silva, a research associate with the SETI Institute who has worked at NASA’s Ames Research Center (NASA ARC) and now works at UTEC in Lima.
“If the crops can tolerate the extreme conditions that we are exposing them to in our CubeSat, they have a good chance to grow on Mars. We will do several rounds of experiments to find out which potato varieties do best. “We want to know what the minimum conditions are that a potato needs to survive,” he said.
The CubeSat houses a container holding soil and the tuber. Inside this hermetically sealed environment the CubeSat delivers nutrient rich water, controls the temperature for Mars day and night conditions and mimics Mars air pressure, oxygen and carbon dioxide levels. Sensors constantly monitor these conditions and live streaming cameras record the soil in anticipation of the potato sprouting. Live streams of the experiment can be viewed at potatoes.space/mars or by going to the CIP website at www.CIPotato.org.
According to CIP potato breeder Walter Amoros, one advantage potato great genetic capacity for adaptation to extreme environments. CIP has tapped into that capacity by breeding potato clones that tolerate conditions such as soil salinity and drought, in order to help smallholder farmers grow food in marginal areas that could grow harsher under climate change.
In 2016, CIP brought Mars analog soil from the Pampas de La Joya desert in Southern Peru to its experimental station in La Molina, Lima. There CIP was able to show proof that potatoes could grow in this dry, salty soil with some help from fertilized Earth soil for both nutrition and structure.
“We have been looking at the very dry soils found in the southern Peruvian desert. These are the most Mars-like soils found on Earth.” Chris McKay of NASA ARC. “This [research] could have a direct technological benefit on Earth and a direct biological benefit on Earth,” says Chris McKay of NASA ARC.
From the initial experiment, CIP scientists concluded that future Mars missions that hope to grow potatoes will have to prepare soil with a loose structure and nutrients to allow the tubers to obtain enough air and water to allow it to tuberize.
“It was a pleasant surprise to see that potatoes we’ve bred to tolerate abiotic stress were able to produce tubers in this soil,” Amoros said. He added that one of the best performing varieties was very salt-tolerant from the CIP breeding program for adaptation to subtropical lowlands with tolerance to abiotic stress that was also recently released as a variety in Bangladesh for cultivation in coastal areas with high soil salinity.
Amoros noted that whatever their implications for Mars missions, the experiments have already provided good news about potato’s potential for helping people survive in extreme environments on Earth.
“The results indicate that our efforts to breed varieties with high potential for strengthening food security in areas that are affected, or will be affected by climate change, are working,” he said.
The Potatoes on Mars project has been conducted by CIP with the advice of NASA ARC and construction of the CubeSat technology was done by student engineers and their advisors at UTEC. NASA and UTEC scientist Julio Valdivia-Silva collaborated extensively with teams of UTEC and CIP scientists on both phases of this experiment. He identified the soil from Pampas de La Joya desert and led the effort to construct the sophisticated CubeSat.
The International Potato Center, known by its Spanish acronym CIP, was founded in 1971 as a root and tuber research-for-development institution delivering sustainable solutions to the pressing world problems of hunger, poverty, and climate change. CIP is truly a global center, with headquarters in Lima, Peru and offices in 20 developing countries across Asia, Africa, and Latin America. Working closely with our partners, CIP seeks to achieve food security, improved nutrition, and gender equity for poor people in the developing world in the midst of climate change. CIP furthers its mission through rigorous research, innovation in science and technology, and capacity strengthening regarding root and tuber farming and food systems.
CIP is part of the CGIAR, a global partnership that unites organizations engaged in research for a food secure future. CGIAR research is dedicated to reducing rural poverty, increasing food security, improving human health and nutrition, and ensuring more sustainable management of natural resources. Funders include individual countries, major foundations, and international entities.
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