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. 2022 Nov 23;13:1033869. doi: 10.3389/fpls.2022.1033869

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Copyright © 2022 Fan, Fu, Wei, Jia, Zhao, Wang, Cao, Liu, Ren and Liu

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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Embryo and endosperm development is arrested in the zmnmat1 mutant. (A) zmnmat1 mutant ears at 15 DAP. Red arrows indicate the empty pericarp kernels. Scale bar =4 cm. (B-E) Paraffin sections of 10 DAP (B, C) and 15 DAP (D, E) WT (C, E) and mutant (B, D) kernels from F₂ ears crossed by zmnmat1 and B73. Arrows indicate the embryo. em, embryo; en, endosperm; LP, leaf primordia; RAM, root apical meristem; SAM, shoot apical meristem; sc, scutellum. Scale bar =1 mm. (F, G) The BETL cells of 15 DAP WT (F) and zmnmat1 mutant kernel (G). Arrows indicate the BETL cells. Scale bar=50 μm.