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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).
Schematic diagram of xylem (X) and phloem (P) tissues of a dissected taproot of American ginseng showing the three parts (I, II, and III) of sampling and inoculation with Fusarium solani or F. oxysporum.