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. 1987 Sep;7(9):3113–3118. doi: 10.1128/mcb.7.9.3113

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

M T Boylan 1, P M Mirabito 1, C E Willett 1, C R Zimmerman 1, W E Timberlake 1
PMCID: PMC367944  PMID: 2823119

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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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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