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. 2021 Jul 14;12:664385. doi: 10.3389/fmicb.2021.664385

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Copyright © 2021 Fang, Zhang, Wang, Duan, Yu, Jia, Pang, Ma, Wang and Nan.

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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Variations in disease severity among 80 alfalfa varieties single or co-inoculated with Fom and Rs. DIS and DIR, disease index of plant shoot and root, respectively. Fo, single inoculation with Fom; Rs, single inoculation with Rs; Fom:Rs, co-inoculation with Fom and Rs. Plants of the control treatment for companions showed no diseases and data were not included. Boxplots show the medians and 25th and 75th percentiles, with whiskers extending to 1.5 times of the interquartile range, and data presented beyond whiskers represent outliers. Different letters above the bars in the same column indicate significant differences (p < 0.001) among treatments according to Fisher’s protected least significant difference (LSD) test. Asterisks between the bars under the same treatment indicate a significant difference (p < 0.001) between traits by Student’s t-test. ns, not significant between traits.