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Kwon, Seomun; Tisserant, Constance; Tulinski, Markus; Weiberg, Arne und Feldbrügge, Michael ORCID logoORCID: https://orcid.org/0000-0003-0046-983X (2020): Inside-out: from endosomes to extracellular vesicles in fungal RNA transport. In: Fungal Biology Reviews, Bd. 34, Nr. 2: S. 89-99

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Abstract

Membrane-coupled RNA transport is an emerging theme in fungal biology. This review focuses on the RNA cargo and mechanistic details of transport via two inter-related sets of organelles: endosomes and extracellular vesicles for intra- and intercellular RNA transfer. Simultaneous transport and translation of messenger RNAs (mRNAs) on the surface of shuttling endosomes is a conserved process pertinent to highly polarised eukaryotic cells, such as hyphae or neurons. Here we detail the endosomal mRNA transport machinery components and mRNA targets of the core RNA-binding protein Rrm4. Extracellular vesicles (EVs) are newly garnering interest as mediators of intercellular communication, especially between pathogenic fungi and their hosts. Landmark studies in plant-fungus interactions indicate EVs as a means of delivering various cargos, most notably small RNAs (sRNAs), for cross-kingdom RNA interference. Recent advances and implications of the nascent field of fungal EVs are discussed and potential links between endosomal and EV-mediated RNA transport are proposed. (C) 2020 British Mycological Society. Published by Elsevier Ltd. All rights reserved.

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