INTRODUCTION: The production of high quality and safe food represents a main priority for the agri-food sector in the effort to sustain the exponentially growing human population. Nonetheless, there are major challenges that require the discovery of new, alternative, and improved...

Diatoms perform about 20% of photosynthesis on earth, play a crucial role in forming the base of the marine food web, and sequester anthropogenic carbon into the deep ocean through the biological pump. In some areas of the ocean, diatom growth is limited by the organic micronutrient cobalamin (vi...