A paper by Aboulela et al. published in the Journal of Experimental Botany shows that two of the Arabidopsis thaliana SEC23 homologs, AtSEC23A and AtSEC23D, are expressed in the tapetum and play essential roles in pollen wall formation, exine patterning, and tapetum development.
Movie S1. Time-lapse confocal imaging of N. benthamiana leaf epidermal cells co-expressing AtSEC23A–G3GFP and the ERES marker AtSEC24A–TagRFP. Both AtSEC23A and AtSEC23D exhibit the characteristic localization of COPII, suggesting that they contribute to COPII formation and ER–Golgi vesicle transport.

Aboulela M, Nakagawa T, Oshima A, Nishimura K, Tanaka Y. 2018. Journal of Experimental Botany 69, 1615–1633. [ Ссылка ]

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