Interactions of three sequentially expressed genes control temporal and spatial specificity in Aspergillus development.

TitleInteractions of three sequentially expressed genes control temporal and spatial specificity in Aspergillus development.
Publication TypeJournal Article
Year of Publication1989
JournalCell
Volume57
Issue5
Pagination859-68
Date Published1989 Jun 2
ISSN0092-8674
Abstract

Aspergillus nidulans brlA, abaA, and wetA form a dependent pathway that regulates asexual reproductive development. The order in which these genes are expressed determines the outcome of development. Expression of brlA in vegetative cells leads to activation of abaA and wetA, cessation of vegetative growth, cellular vacuolization, and spore formation. By contrast, expression of abaA in vegetative cells does not result in conidial differentiation but does lead to activation of brlA and wetA, cessation of vegetative growth, and accentuated cellular vacuolization. brlA, abaA, and wetA act individually and together to regulate their own expression and that of numerous other sporulation-specific genes. We propose that the central pathway controlling development is largely autoregulatory. The timing and extent of expression of the regulatory genes and their targets are determined as development proceeds by intrinsically controlled changes in the relative concentrations of regulatory gene products in the various conidiophore cell types.

URLhttp://linkinghub.elsevier.com/retrieve/pii/0092-8674(89)90800-3
Short TitleCell
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