Quantifying Shape Changes and Tissue Deformation in Leaf Development

被引:24
作者
Rolland-Lagan, Anne-Gaelle [1 ,2 ,3 ]
Remmler, Lauren [1 ]
Girard-Bock, Camille [1 ]
机构
[1] Univ Ottawa, Dept Biol, Ottawa, ON K1N 6N5, Canada
[2] Univ Ottawa, Sch Elect Engn & Comp Sci, Ottawa, ON K1N 6N5, Canada
[3] Univ Ottawa, Ottawa, ON K1N 6N5, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
COMPUTATIONAL METHOD; GENETIC-CONTROL; GROWTH; ARABIDOPSIS; CURVATURE; SURFACE; SPACE; QUANTIFICATION; MECHANISM; PATTERNS;
D O I
10.1104/pp.113.231258
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The analysis of biological shapes has applications in many areas of biology, and tools exist to quantify organ shape and detect shape differences between species or among variants. However, such measurements do not provide any information about the mechanisms of shape generation. Quantitative data on growth patterns may provide insights into morphogenetic processes, but since growth is a complex process occurring in four dimensions, growth patterns alone cannot intuitively be linked to shape outcomes. Here, we present computational tools to quantify tissue deformation and surface shape changes over the course of leaf development, applied to the first leaf of Arabidopsis (Arabidopsis thaliana). The results show that the overall leaf shape does not change notably during the developmental stages analyzed, yet there is a clear upward radial deformation of the leaf tissue in early time points. This deformation pattern may provide an explanation for how the Arabidopsis leaf maintains a relatively constant shape despite spatial heterogeneities in growth. These findings highlight the importance of quantifying tissue deformation when investigating the control of leaf shape. More generally, experimental mapping of deformation patterns may help us to better understand the link between growth and shape in organ development.
引用
收藏
页码:496 / 505
页数:10
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