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. 2018 Feb 5;9:42. doi: 10.3389/fmicb.2018.00042

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Copyright © 2018 Khalaf and Raizada.

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 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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Screening of cucurbit seed associated endophytic bacteria for antagonism against cucumber powdery mildew disease using a leaf disk bioassay. (A–E) Representative pictures of: (A) chemical fungicide positive control (Prothioconazole), (B) commercial biocontrol agent positive control (Bacillus subtilis strain QST 713), (C) example of a typical promising endophytic bacteria; Pantoea EKM101V, (D) the negative control (LB broth amended with filter sterilized 0.01% Tween 20) and (E) example of an endophytic bacteria displaying adverse effects in the presence of the pathogen. Paenibacillus EKM104P. (F) Represents pictures of 0–7 scoring scale used as references to guide the visual disease assessments. R (1–3) denotes replicate number.