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Research Article

Isolation and physical characterization of three essential conidiation genes from Aspergillus nidulans.

M T Boylan, P M Mirabito, C E Willett, C R Zimmerman, W E Timberlake
M T Boylan
Department of Genetics, University of Georgia, Athens 30602.
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P M Mirabito
Department of Genetics, University of Georgia, Athens 30602.
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C E Willett
Department of Genetics, University of Georgia, Athens 30602.
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C R Zimmerman
Department of Genetics, University of Georgia, Athens 30602.
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W E Timberlake
Department of Genetics, University of Georgia, Athens 30602.
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DOI: 10.1128/MCB.7.9.3113
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ABSTRACT

We cloned and characterized three genes from Aspergillus nidulans, designated brlA, abaA, and wetA, whose activities are required to complete different stages of conidiophore development. Inactivation of these genes causes major abnormalities in conidiophore morphology and prevents expression of many unrelated, developmentally regulated genes, without affecting the expression of nonregulated genes. The three genes code for poly(A)+ RNAs that begin to accumulate at different times during conidiation. The brlA- and abaA-encoded RNAs accumulate specifically in cells of the conidiophore. The wetA-encoded RNA accumulates in mature conidia. Inactivation of the brlA gene prevents expression of the abaA and wetA genes, whereas inactivation of the abaA gene prevents expression of the wetA gene. Our results confirm genetic predictions as to the temporal and spatial patterns of expression of these genes and demonstrate that these patterns are specified at the level of RNA accumulation.

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Isolation and physical characterization of three essential conidiation genes from Aspergillus nidulans.
M T Boylan, P M Mirabito, C E Willett, C R Zimmerman, W E Timberlake
Molecular and Cellular Biology Sep 1987, 7 (9) 3113-3118; DOI: 10.1128/MCB.7.9.3113

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Isolation and physical characterization of three essential conidiation genes from Aspergillus nidulans.
M T Boylan, P M Mirabito, C E Willett, C R Zimmerman, W E Timberlake
Molecular and Cellular Biology Sep 1987, 7 (9) 3113-3118; DOI: 10.1128/MCB.7.9.3113
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