Ionizing radiation: how fungi cope, adapt, and exploit with the help of melanin.

Ionizing radiation: how fungi cope, adapt, and exploit with the help of melanin.
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DOI:
10.1016/j.mib.2008.09.013
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发表时间:
2008-12
影响因子:
5.4
通讯作者:
Casadevall, Arturo
Casadevall, Arturo
中科院分区:
生物学2区
文献类型:
--
作者:
Dadachova, Ekaterina;Casadevall, Arturo

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Life on Earth has always existed in the flux of ionizing radiation. However, fungi seem to interact with the ionizing radiation differently from other Earth’s inhabitants. Recent data show that melanized fungal species like those from Chernobyl’s reactor respond to ionizing radiation with enhanced growth. Fungi colonize space stations and adapt morphologically to extreme conditions. Radiation exposure causes upregulation of many key genes, and an inducible microhomology-mediated recombination pathway could be a potential mechanism of adaptive evolution in eukaryotes. The discovery of melanized organisms in high radiation environments, the space stations, Antarctic mountains, and in the reactor cooling water combined with phenomenon of ‘radiotropism’ raises the tantalizing possibility that melanins have functions analogous to other energy harvesting pigments such as chlorophylls.
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