Agnirva Space Premier League - Expedition #32262: Space Seeds: Investigating Genetic Responses in Microgravity

Plants may not have voices, but they speak through their genes—and in space, their messages change. The SEED-1 and SEED-2 experiments, led by Dr. Joe Chappelle from the University of Kentucky, examined how microgravity influences plant genetics and growth patterns. Carried aboard ISS Expeditions 49/50, the experiments aimed to uncover the molecular changes that occur when seeds are grown in space.

At the core of SEED-1 and SEED-2 was an inquiry into gene expression. When plants are exposed to microgravity, their genes behave differently—some genes switch on or off in ways that don't happen on Earth. These changes can affect root structure, growth speed, leaf development, and stress response.

To study this, SEED-1 tested initial germination and early development, while SEED-2 focused on more mature stages of plant growth. Samples were returned to Earth for genetic sequencing, allowing researchers to pinpoint which genes were most affected.

Understanding these mechanisms is vital for developing crops that can thrive in extraterrestrial habitats. It also helps scientists breed more resilient plants here on Earth, potentially transforming agriculture in extreme climates or poor soil conditions.

The SEED projects are planting the roots of future space farming—literally and scientifically.

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