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Exposing Metarhizium acridum mycelium to visible light up-regulates a photolyase gene and increases photoreactivating ability

2018; Elsevier BV; Volume: 152; Linguagem: Inglês

10.1016/j.jip.2018.01.007

1096-0805

Guilherme Thomaz Pereira Brancini, Luciano Bachmann, Márcia Eliana da Silva Ferreira, Drauzio E.N. Rangel, Gilberto Úbida Leite Braga,

Insect Resistance and Genetics

Metarhizium acridum is an entomopathogen currently used against acridids. We have previously reported that exposing mycelium to visible light increases M. acridum tolerance to ultraviolet-B (UV-B) radiation. Here we evaluated if light could also increase tolerance to ultraviolet-C (UV-C) radiation. We observed that, as opposed to UV-B radiation, light did not increase tolerance to UV-C radiation under dark repair conditions. However, light did increase tolerance to UV-C radiation if photoreactivating light was present after UV-C exposure. Quantitative PCR experiments revealed that light up-regulates a photolyase gene. This is the first report showing that light regulates photoreactivating ability in M. acridum.