Ecological Stress: Melanization as a Response in Fungi to Radiation

  • Isabella Grishkan


Fungi are known as organisms highly adapted to their environment. Among various extremes they need to cope with when colonizing natural and man-made substrates is a high level of radiation of different kinds – solar (UV) or ionizing. In the last decades, a significant reduction in the stratospheric ozone layer has been registered, with ozone loss between 1979 and 1991 averaged around 4 ± 6% per decade at northern temperate latitudes (Hollandsworth et al. 1995). As a result, the amount of more harmful UV-B radiation (280–315 nm) reaching the Earth’s surface has increased (e.g., Kerr and McElroy 1993). In parallel, contamination of the environment by radionuclides, a source for the ionizing radiation, is also enhanced. All these man-induced environmental changes increase the necessity to withstand high radiation levels, and the protective role of dark pigmentation mainly of melanin nature in surviving and exploiting highly radiated environments is confirmed to be crucial.



Alternaria Alternata Cladosporium Cladosporioides Early Cretaceous Period Uppermost Soil Layer Fungal Melanin 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Authors and Affiliations

  1. 1.Institute of EvolutionUniversity of HaifaHaifaIsrael

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