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. Author manuscript; available in PMC: 2018 Jan 1.
Published in final edited form as: Trends Microbiol. 2016 Dec 4;25(1):4–6. doi: 10.1016/j.tim.2016.11.011

Figure 1. Two Possible Pathways of Silencing Fungal Genes Induced by dsRNA- and sRNA- Sprayed Plant Surfaces.

Figure 1

Pathway one: the external dsRNAs and sRNAs are taken up by the plant cells and then transferred into fungal cells (I). These dsRNAs are cleaved into sRNAs by either the plant DCL proteins or fungal DCL proteins. At the same time, the transferred dsRNAs and sRNAs in the plant cells also systemically spread and are transferred into fungal cells. The systemically spread dsRNAs are processed into sRNAs mainly by the fungal DCL protein. Pathway two: the external dsRNAs and sRNAs are directly taken up by the fungal cells (II), and the transferred dsRNAs are processed into sRNAs by the fungal DCL proteins.