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. 2014 Oct 14;14:278. doi: 10.1186/s12870-014-0278-3

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© Xu et al.; licensee BioMed Central Ltd. 2014

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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Semi-thin sections of developing Arabidopsis anthers from a transgenic At80MD plant (line 13). A. Stage 8; vacuolated tapetum cells and enlarged microspores. B. Stage 10; tapetum cells are highly vacuolated and enlarged. Microspores commence degrading. C. Stage 11; microspores remain vacuolated, enlarged tapetum with reduced cytoplasm. D. Stage 12; degenerated tapetum and collapsed pollen grains. MSp, microspores; PG, pollen grains; Sm, septum; T, tapetum. Scale bars = 25 μm in A, scale bars = 50 μm in B, C and D.