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. 2020 Jun 25;11:839. doi: 10.3389/fpls.2020.00839

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Copyright © 2020 Yao, Li, Chen, Liu, Mi, Ren, Mo and Lu.

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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Immunolocalization of γH2AX in male meiocytes of different alleles. (A) γH2AX localization on zygotene stage chromosomes of wild type, atm-2, atm-5, atr-2, and atm-5 atr-2 respectively. (B) γH2AX localization on pachytene stage chromosomes of wild type, atm-2, atm-5, atr-2, and atm-5 atr-2 respectively. (C) Number of γH2AX foci per cell in zygotene stage in different alleles: wild type (204.07 ± 10.64, n = 30), atm-2 (146.84 ± 18.55, n = 32, P = 1.40E-11), atm-5 (152.3 ± 6.59, n = 30, P = 2.91E-11), atr-2 (208.48 ± 24.83, n = 33, P = 4.36E-1) and atm-5 atr-2 (21.1 ± 6.58, n = 29, P = 4.31E-11). (D) Number of γH2AX foci per cell in pachytene stage in different alleles: wild type (80.2 ± 10.31, n = 30), atm-2 (47.31 ± 10.02, n = 31, P = 6.27E-11), atm-5 (51.07 ± 5.33, n = 30, P = 2.93E-11), atr-2 (72.44 ± 15.66, n = 33, P = 1.86E-2) and atm-5 atr-2 (18.64 ± 5.86, n = 36, P = 3.64E-12). Bar = 5 μm. NS: P > 0.05, ***P < 0.001 (Wilcoxon Rank Sum test). Cells counted in each allele are from at least 30 plants. The atm-2 and atm-5 are two independent atm mutant alleles.