Digital Single-Cell Analysis of Plant Organ Development Using 3DCellAtlas

Diverse molecular networks underlying plant growth and development are rapidly being uncovered. Integrating these data into the spatial and temporal context of dynamic organ growth remains a technical challenge. We developed 3DCellAtlas, an integrative computational pipeline that semiautomatically i...

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Bibliographic Details
Published in:The Plant cell 2015-04, Vol.27 (4), p.1018-1033
Main Authors: Montenegro-Johnson, Thomas D., Stamm, Petra, Strauss, Soeren, Topham, Alexander T., Tsagris, Michail, Wood, Andrew T.A., Smith, Richard S., Bassel, George W.
Format: Article
Language:English
Subjects:
Anisotropy
Arabidopsis
Arabidopsis - growth & development
Arabidopsis - metabolism
Arabidopsis thaliana
Cell growth
Cell lines
Cells
Computational Biology - methods
Embryos
Endodermis
Epidermal cells
Epidermis
Hypocotyl - growth & development
Hypocotyl - metabolism
Hypocotyls
Organogenesis, Plant - genetics
Organogenesis, Plant - physiology
Plant cells
Plant Roots - growth & development
Plant Roots - metabolism
Single-Cell Analysis - methods
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Summary:Diverse molecular networks underlying plant growth and development are rapidly being uncovered. Integrating these data into the spatial and temporal context of dynamic organ growth remains a technical challenge. We developed 3DCellAtlas, an integrative computational pipeline that semiautomatically identifies cell types and quantifies both 3D cellular anisotropy and reporter abundance at single-cell resolution across whole plant organs. Cell identification is no less than 97.8% accurate and does not require transgenic lineage markers or reference atlases. Cell positions within organs are defined using an internal indexing systemgenerating cellular level organ atlases where data frommultiple samples can be integrated. Using this approach, we quantified the organ-wide cell-type-specific 3D cellular anisotropy driving Arabidopsis thaliana hypocotyl elongation. The impact ethylene has on hypocotyl 3D cell anisotropy identified the preferential growth of endodermis in response to this hormone. The spatiotemporal dynamics of the endogenous DELLA protein RGA, expansin gene EXPA3, and cell expansion was quantified within distinct cell types of Arabidopsis roots. A significant regulatory relationship between RGA, EXPA3, and growth was present in the epidermis and endodermis. The use of single-cell analyses of plant development enables the dynamics of diverse regulatory networks to be integrated with 3D organ growth.
ISSN:1040-4651
1532-298X
DOI:10.1105/tpc.15.00175