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Clones of cells switch from reduction to enhancement of size variability in Arabidopsis sepals
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Number of Authors: 102017 (English)In: Development, ISSN 0950-1991, E-ISSN 1477-9129, Vol. 144, no 23, p. 4398-4405Article in journal (Refereed) Published
Abstract [en]

Organs form with remarkably consistent sizes and shapes during development, whereas a high variability in growth is observed at the cell level. Given this contrast, it is unclear how such consistency in organ scale can emerge from cellular behavior. Here, we examine an intermediate scale, the growth of clones of cells in Arabidopsis sepals. Each clone consists of the progeny of a single progenitor cell. At early stages, we find that clones derived from a small progenitor cell grow faster than those derived from a large progenitor cell. This results in a reduction in clone size variability, a phenomenon we refer to as size uniformization. By contrast, at later stages of clone growth, clones change their growth pattern to enhance size variability, when clones derived from larger progenitor cells grow faster than those derived from smaller progenitor cells. Finally, we find that, at early stages, fast growing clones exhibit greater cell growth heterogeneity. Thus, cellular variability in growth might contribute to a decrease in the variability of clones throughout the sepal.

Place, publisher, year, edition, pages
2017. Vol. 144, no 23, p. 4398-4405
Keywords [en]
Cell size variability, Clone, Size uniformization, Cell growth heterogeneity
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:su:diva-150053DOI: 10.1242/dev.153999ISI: 000416315500020OAI: oai:DiVA.org:su-150053DiVA, id: diva2:1165165
Available from: 2017-12-12 Created: 2017-12-12 Last updated: 2017-12-12Bibliographically approved

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Li, Chun-Biu
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