Live-cell imaging of rapid calcium dynamics using fluorescent, genetically-encoded GCaMP probes with Aspergillus fumigatus.

Live-cell imaging of rapid calcium dynamics using fluorescent, genetically-encoded GCaMP probes with Aspergillus fumigatus. Fungal Genet Biol. 2020 Sep 23;:103470 Authors: Muñoz A, Bertuzzi M, Seidel C, Thomson D, Bignell EM, Read ND Abstract Calcium signalling plays a fundamental role in fungal intracellular signalling. Previous approaches (fluorescent dyes, bioluminescent aequorin, genetically encoded cameleon probes) with imaging rapid subcellular changes in cytosolic free calcium ([Ca2+]c) in fungal cells have produced inconsistent results. Recent data obtained with new fluorescent, genetically encoded GCaMP probes, that are very bright, have resolved this problem. Here, exposing conidia or conidial germlings to high external Ca2+, as an example of an external stressor, induced very dramatic, rapid and dynamic [Ca2+]c changes with localized [Ca2+]c transients and waves. Considerable heterogeneity in the timing of Ca2+ responses of different spores/germlings within the cell population was observed. PMID: 32979514 [PubMed - as supplied by publisher]
Source: Fungal Genetics and Biology - Category: Biology Authors: Tags: Fungal Genet Biol Source Type: research