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. 2019 Apr 9;10:433. doi: 10.3389/fpls.2019.00433

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Copyright © 2019 Guo, Li, Fan, Xiong, Xu, Shi, Shi, Zhao, Wang, Cao and Wang.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Growth of aerial hyphae of rice blast fungus on media containing artificial siRNAs (asiRNAs). (A) Diagrams show the target sites of the indicated artificial small interference RNAs. Black boxes denote exons. (B) The indicated asiRNAs targeting MoAP1 inhibited fungal aerial hyphae growth. The culture medium was supplemented with the indicated asiRNAs targeting MoAP1 at the indicated concentration. Control (CK) samples with 0 nM asiRNAs. Note that abnormal hyphae consisted of degraded hyphal cytoplasm and lacked melanin (arrows). Normal hyphae exhibited robust growth and had relatively high cytoplasmic melanin levels in the CK media (arrowheads). (C–E) The indicated asiRNAs targeting MoACT (C), MoSSADH (D), and MoSOM1 (E) did not affect Magnaporthe oryzae aerial hyphae growth. Images were taken at 1 day post conidial culture. Bars = 50 μm. Similar results were obtained in at least three independent experiments.