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  Microtubule-Mediated Wall Anisotropy Contributes to Leaf Blade Flattening

Zhao, F., Du, F., Oliveri, H., Zhou, L., Ali, O., Chen, W., et al. (2020). Microtubule-Mediated Wall Anisotropy Contributes to Leaf Blade Flattening. Current Biology. Retrieved from http://www.sciencedirect.com/science/article/pii/S0960982220311015.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0007-003E-4 Version Permalink: http://hdl.handle.net/21.11116/0000-0007-003F-3
Genre: Journal Article

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 Creators:
Zhao, Feng1, Author
Du, Fei1, Author
Oliveri, Hadrien1, Author
Zhou, Lüwen1, Author
Ali, Olivier1, Author
Chen, Wenqian1, Author
Feng, Shiliang1, Author
Wang, Qingqing1, Author
Lü, Shouqin1, Author
Long, Mian1, Author
Schneider, R.2, Author              
Sampathkumar, A.2, Author              
Godin, Christophe1, Author
Traas, Jan1, Author
Jiao, Yuling1, Author
Affiliations:
1external, ou_persistent22              
2Plant Cell Biology and Microscopy, Infrastructure Groups and Service Units, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_2253647              

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Free keywords: leaf flattening, anisotropic growth, cell wall, cytoskeleton, mechanical feedback, 3D mechanical modeling, organ polarity
 Abstract: Summary Plant organs can adopt a wide range of shapes, resulting from highly directional cell growth and divisions. We focus here on leaves and leaf-like organs in Arabidopsis and tomato, characterized by the formation of thin, flat laminae. Combining experimental approaches with 3D mechanical modeling, we provide evidence that leaf shape depends on cortical microtubule mediated cellulose deposition along the main predicted stress orientations, in particular, along the adaxial-abaxial axis in internal cell walls. This behavior can be explained by a mechanical feedback and has the potential to sustain and even amplify a preexisting degree of flatness, which in turn depends on genes involved in the control of organ polarity and leaf margin formation.

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 Dates: 2020
 Publication Status: Published in print
 Pages: -
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Title: Current Biology
Source Genre: Journal
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Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: ISBN: 0960-9822