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Spotlight on Aspergillus nidulans photosensory systems
- Source :
- Fungal Genetics and Biology. 47:900-908
- Publication Year :
- 2010
- Publisher :
- Elsevier BV, 2010.
-
Abstract
- Aspergilli are ubiquitous soil-borne fungi growing within or on the surface of numerous organic substrates. Growth within a substrate or growth on the surface correlates to different growth conditions for the hyphae due to significant changes in oxygen or reactive oxygen species levels and variations in humidity or temperature. The production of air-borne spores is supported by the substrate-air interphase and also requires a sensing system to adapt appropriately. Here we focus on light as important parameter for the mycelium to discriminate between different habitats. The fungal 'eye' includes several light sensors which react to a broad plethora of wavelengths. Aspergillus nidulans light receptors comprise a phytochrome for red-light sensing, white collar-like blue-light signaling proteins, a putative green-light sensing opsin and a cryptochrome/photolyase as distinct sensory systems. Red- and blue-light receptors are assembled into a light-sensing protein complex. Light receptors transmit their signal to a number of other regulatory proteins including a bridging protein, VeA, as part of a trimeric complex. VeA plays a central role in the balance of asexual and sexual development and in the coordination of morphogenesis and secondary metabolism.
- Subjects :
- 0303 health sciences
Opsin
Light
Mycelium
biology
Phytochrome
030306 microbiology
biology.organism_classification
Microbiology
Aspergillus nidulans
Cell biology
Fungal Proteins
03 medical and health sciences
Cryptochrome
Gene Expression Regulation, Fungal
Botany
Genetics
Signal transduction
Photolyase
Secondary metabolism
Signal Transduction
Transcription Factors
030304 developmental biology
Subjects
Details
- ISSN :
- 10871845
- Volume :
- 47
- Database :
- OpenAIRE
- Journal :
- Fungal Genetics and Biology
- Accession number :
- edsair.doi.dedup.....3988a2cf56dcdb0f62f9be85243b50c5