Recent Advances in the Molecular Study of Circadian Clocks in Neurospora and Other Fungi

Together with Paulo Canessa and Luis Larrondo, we wrote an extensive review on circadian rhythms in fungi, which was published in Advances in Genetics. We focused on the well-characterized clock of the ascomycete Neurospora crassa, describing the molecular basis of its pacemaker, together with how it synchronizes with the environment and how it controls the rhythmic expression of thousands of genes. We mostly centered our discussion on recent research on all of these topics. We also described several studies reporting rhythms in other fungi and towards the end of the article, we focused on the clock of the pathogenic fungus Botrytis cinerea, for which we have recently described a functional circadian clock that plays a major role in determining the outcome of the Arabidopsis-Botrytis interaction.

Here’s the info:

Around the Fungal Clock: Recent Advances in the Molecular Study of Circadian Clocks in Neurospora and Other Fungi

Advances in Genetics
Available online 27 October 2015
In Press, Corrected Proof

Alejandro Montenegro-Montero, Paulo Canessa, Luis F. Larrondo

N. crassa growing on solid media under light-dark conditions

N. crassa growing on solid media under light-dark conditions

Night follows day and as a consequence, organisms have evolved molecular machineries that allow them to anticipate and respond to the many changes that accompany these transitions. Circadian clocks are precise yet plastic pacemakers that allow the temporal organization of a plethora of biological process. Circadian clocks are widespread across the tree of life and while their exact molecular components differ among phyla, they tend to share common design principles. In this review, we discuss the circadian system of the filamentous fungus Neurospora crassa. Historically, this fungus has served a key role in the genetic and molecular dissection of circadian clocks, aiding in their detailed mechanistic understanding. Recent studies have provided new insights into the daily molecular dynamics that constitute the Neurospora circadian oscillator, some of which have questioned traditional paradigms describing timekeeping mechanisms in eukaryotes. In addition, recent reports support the idea of a dynamic network of transcription factors underlying the rhythmicity of thousands of genes in Neurospora, many of which oscillate only under specific conditions. Besides Neurospora, which harbors the best characterized circadian system among filamentous fungi, the recent characterization of the circadian system of the plant-pathogenic fungus Botrytis cinerea has provided additional insights into the physiological impact of the clock and potential additional functions of clock proteins in fungi. Finally, we speculate on the presence of FRQ or FRQ-like proteins in diverse fungal lineages.

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