alexa brlA is necessary and sufficient to direct conidiophore development in Aspergillus nidulans.
Genetics & Molecular Biology

Genetics & Molecular Biology

Fungal Genomics & Biology

Author(s): Adams TH, Boylan MT, Timberlake WE

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Abstract The brlA gene of A. nidulans mediates the developmental switch from the indeterminate, apical growth pattern of vegetative cells to the budding growth pattern of conidiophores. brlA encodes a 432 amino acid polypeptide containing two directly repeated motifs resembling the Zn(II) coordination sites first recognized in Xenopus TFIIIA. Misscheduled expression of brlA in vegetative cells results in transcriptional activation of developmentally regulated genes, cessation of unidirectional hyphal growth, initiation of cellular transformations resembling those that occur during normal conidiophore development, and production of viable conidiospores. We propose that BRLA is a nucleic acid-binding protein whose expression in vegetative cells is sufficient to induce sporulation through its role in regulating expression of conidiation-specific genes.
This article was published in Cell and referenced in Fungal Genomics & Biology

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