A Decrease in Ambient Temperature Induces Post-Mitotic Enlargement of Palisade Cells in North American Lake Cress
0303 health sciences
Science
Q
Cell Cycle
R
Arabidopsis
Temperature
Mitosis
Cell Communication
Environment
Plant Leaves
03 medical and health sciences
Phenotype
Species Specificity
Gene Expression Regulation, Plant
Rorippa
Medicine
Phylogeny
Plant Physiological Phenomena
Research Article
Cell Proliferation
Cell Size
DOI:
10.1371/journal.pone.0141247
Publication Date:
2015-11-16T22:53:58Z
AUTHORS (6)
ABSTRACT
In order to maintain organs and structures at their appropriate sizes, multicellular organisms orchestrate cell proliferation and post-mitotic cell expansion during morphogenesis. Recent studies using Arabidopsis leaves have shown that compensation, which is defined as post-mitotic cell expansion induced by a decrease in the number of cells during lateral organ development, is one example of such orchestration. Some of the basic molecular mechanisms underlying compensation have been revealed by genetic and chimeric analyses. However, to date, compensation had been observed only in mutants, transgenics, and γ-ray-treated plants, and it was unclear whether it occurs in plants under natural conditions. Here, we illustrate that a shift in ambient temperature could induce compensation in Rorippa aquatica (Brassicaceae), a semi-aquatic plant found in North America. The results suggest that compensation is a universal phenomenon among angiosperms and that the mechanism underlying compensation is shared, in part, between Arabidopsis and R. aquatica.
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