silicondependent

Silicondependent is a term used to describe organisms that require silicon for some aspect of their life cycle or structure. While silicon is the second most abundant element in Earth's crust, its biological role is often overlooked compared to other elements like carbon, hydrogen, oxygen, and nitrogen. However, a growing number of studies highlight the importance of silicon for a diverse range of life forms.

Plants are among the most well-known silicondependent organisms. Many species, particularly grasses and sedges, accumulate significant amounts of silica within their tissues. This silica deposition provides structural support, strengthens cell walls, deters herbivores, and can even help plants cope with environmental stresses such as drought and heavy metal toxicity. The glassy skeletons of diatoms, a type of algae, are another prominent example of silicon's structural role in biology. These intricate silica shells, called frustules, are vital for diatom survival and play a significant role in global biogeochemical cycles. Beyond plants and algae, evidence suggests that some animals, such as certain sponges and marine worms, also utilize silicon in their skeletal structures. Research is ongoing to fully understand the extent and mechanisms of silicon's importance across the tree of life.