Arctic Life/Arctic Fungi/Sunblock for Fungi

From Arctic Bioscan Wiki

Besides harsh environmental conditions, another major threat to survival in the Arctic is ultraviolet (UV) radiation from the Sun. UV-B radiation splits the water molecules in hyphal cells into free radicals, which can damage DNA. To avoid this, some arctic fungi have developed a mycelium and spores with dark pigmentation, which UV-B rays cannot readily penetrate. Other Arctic fungi have developed mechanisms enabling the rapid repair of damaged DNA.