Light is required for conidiation in Aspergillus nidulans
| Autor: | Lawrence N. Yager, Jeffrey L. Mooney |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Regulation of gene expression
Light Transcription Genetic Phytochrome biology Velvet Genes Fungal Fungal genetics Conidiation Far-red Asexual sporulation Spores Fungal biology.organism_classification Aspergillus nidulans Cell biology Gene Expression Regulation Fungal Botany Genetics Alleles Developmental Biology |
| Zdroj: | Genes & Development. 4:1473-1482 |
| ISSN: | 1549-5477 0890-9369 |
| DOI: | 10.1101/gad.4.9.1473 |
| Popis: | Light is necessary for asexual sporulation in Aspergillus nidulans but will elicit conidiation only if irradiation occurs during a critical period of development. We show that conidiation is induced by red light and suppressed by an immediate shift to far red light. Conidiation-specific gene functions switch from light-independent to light-dependent activities coincident with the expression of brlA, a regulator of conidiophore development. We also show that light dependence is abolished by a mutation in the velvet gene, which allows conidiation to occur in the absence of light. We propose that the initiation of late gene expression is regulated by velvet and controlled by a red light photoreceptor, whose properties are reminiscent of phytochrome-mediated responses observed in higher plants. |
| Databáze: | OpenAIRE |
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