Activation by light of the <i>albino</i> genes in <i>Neurospora</i> species.

<p>Quantitative RT-PCR experiments were performed to measure the relative accumulation of <i>al-1</i> or <i>al-2</i> mRNA in mycelia of wild-type strains exposed to white light (2 W/m² blue light) or kept in the dark. The plots show the average and standard error of the mean of the relative mRNA accumulation in four independent experiments, each with three replicates. The results from each PCR for each gene were normalized to the corresponding PCR for <i>tub-2</i> to correct for sampling errors and normalized to the result obtained with mycelia kept in the dark. The amount of carotenoids accumulated by each wild-type strain in cultures exposed to light is shown under each strain name. The initials describe each <i>Neurospora</i> species: Nc <i>Neurospora crassa</i>, Nt <i>Neurospora tetrasperma</i>, and Nd <i>Neurospora discreta</i>.