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Global Dynamic Molecular Profiles of Stomatal Lineage Cell Development by Single-Cell RNA Sequencing

By Zhixin Liu, Yaping Zhou, Jinggong Guo, Jiaoai Li, Zixia Tian, Zhinan Zhu, Jiajing Wang, Rui Wu, Bo Zhang, Yongjian Hu, Yijing Sun, Yan Shangguan, Weiqiang Li, Tao Li, Yunhe Hu, Chenxi Guo, Jean-David Rochaix, Yuchen Miao, Xuwu Sun

Posted 14 Feb 2020
bioRxiv DOI: 10.1101/2020.02.13.947549 (published DOI: 10.1016/j.molp.2020.06.010)

The regulation of stomatal lineage cell development has been extensively investigated. However a comprehensive characterization of this biological process based on single-cell transcriptome analysis has not yet been reported. Here, we performed RNA-seq on over 12,844 individual cells from the cotyledons of five-day-old Arabidopsis seedlings. We identified 11 cell clusters corresponding mostly to cells at specific stomatal developmental stages with a series of new marker genes. Comparative analysis of genes with the highest variable expression in these cell clusters revealed three transcriptional networks that regulate the development of mesophyll and guard cells, as well as the differentiation from protodermal to guard mother cells. We investigated the developmental dynamics of marker genes via pseudo-time analysis which revealed potential interactions between them. The identification of several novel marker genes suggests new regulatory mechanisms during development of stomatal cell lineage.

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