Task Progress:
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The initial start of experiments was delayed from April 2024 to August 2024 to accommodate the timeline of a post-doctoral scholar’s earliest possible start date. Despite this delay, we have made significant progress towards the goals of this project.
For Aim 1, we have completed an experiment that assessed growth of potato plants on lunar regolith simulant with or without addition of compost. This experiment revealed a clear effect of regolith simulant on overall plant size, especially roots’ and tubers’ biomass. Soil and plant tissue analyses enabled us to pinpoint a specific factor that likely represents the main stressor. We have initiated a second experiment where potato plants are grown on four different lunar regolith simulants. Plants are being phenotypically characterized. Experiments are underway to characterize the potato plant response to lunar regolith simulant at the molecular level.
For Aim 2, we have selected a set of 13 potato genotypes based on various characteristics (e.g., dormancy, stress tolerance), and obtained tissue culture plantlets from different sources across the U.S. (e.g., breeding programs, US Potato Genebank). We have started to propagate those plantlets and plan to plant them in lunar regolith simulants in April 2025.
During the next reporting period, ongoing experiments will be completed (i.e., harvest, phenotyping data analysis, metabolite analysis, and transcriptomic study). Aim 2 experiments will move forward on schedule.
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