Rules and self-organizing properties of post-embryonic plant organ cell division patterns
Summary Plants form new organs with patterned tissue organization throughout their lifespan. It is unknown whether this robust post-embryonic organ formation results from stereotypic dynamic processes, in which the arrangement of cells follows rigid rules. Here, we combine modeling with empirical ob...
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| Main Authors: | , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
January 28, 2016
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| In: |
Current biology
Year: 2016, Volume: 26, Issue: 4, Pages: 439-449 |
| ISSN: | 1879-0445 |
| DOI: | 10.1016/j.cub.2015.12.047 |
| Online Access: | Verlag, kostenfrei, Volltext: http://dx.doi.org/10.1016/j.cub.2015.12.047 Verlag, kostenfrei, Volltext: http://www.sciencedirect.com/science/article/pii/S096098221501578X 
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| Author Notes: | Daniel von Wangenheim, Jens Fangerau, Alexander Schmitz, Richard S. Smith, Heike Leitte, Ernst H. K. Stelzer, and Alexis Maizel |
| Summary: | Summary Plants form new organs with patterned tissue organization throughout their lifespan. It is unknown whether this robust post-embryonic organ formation results from stereotypic dynamic processes, in which the arrangement of cells follows rigid rules. Here, we combine modeling with empirical observations of whole-organ development to identify the principles governing lateral root formation in Arabidopsis. Lateral roots derive from a small pool of founder cells in which some take a dominant role as seen by lineage tracing. The first division of the founders is asymmetric, tightly regulated, and determines the formation of a layered structure. Whereas the pattern of subsequent cell divisions is not stereotypic between different samples, it is characterized by a regular switch in division plane orientation. This switch is also necessary for the appearance of patterned layers as a result of the apical growth of the primordium. Our data suggest that lateral root morphogenesis is based on a limited set of rules. They determine cell growth and division orientation. The organ-level coupling of the cell behavior ensures the emergence of the lateral root’s characteristic features. We propose that self-organizing, non-deterministic modes of development account for the robustness of plant organ morphogenesis. |
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| Item Description: | Gesehen am 04.05.2017 |
| Physical Description: | Online Resource |
| ISSN: | 1879-0445 |
| DOI: | 10.1016/j.cub.2015.12.047 |