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. 2015 Apr 1;15:95. doi: 10.1186/s12870-015-0472-y

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© Yue et al.; licensee BioMed Central. 2015

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Knocking down wheat autophagy-related ATG6 genes weakly compromises the broad-spectrum resistance gene Pm21 -triggered resistance response to Blumeria graminis f. sp. tritici ( Bgt ). Barley stripe mosaic virus (BSMV)-treated 92R137/Yangmai 158⁷ (Pm21) plants of the six-leaf stage were heavily inoculated with Bgt conidia. Fungal structures were stained by trypan blue and visualized by microscopy. (A) Bgt penetration frequency. The number of successfully penetrating conidium with secondary hyphae on the fourth leaves was counted at 7 days after inoculation (dai) with Bgt conidia. Values represent the mean percentage of successfully penetrating Bgt conidia ± SEM calculated from at least 100 interaction sites. CK is from BSMV:GFP-treated 92R137/Yangmai 158⁷ (Pm21) control plants. Arabic numbers indicate individual BSMV:ATG6-treated 92R137/Yangmai 158⁷ (Pm21) plants. (B) Representative images of Bgt infection on the fourth leaves of BSMV-treated 92R137/Yangmai 158⁷ (Pm21) plants at 7 dai. Successfully penetrating conidia with secondary hyphae are indicated by arrows.