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Microtubule-Mediated Wall Anisotropy Contributes to Leaf Blade Flattening
Feng Zhao, Fei Du, Hadrien Oliveri, Lüwen Zhou, Olivier Ali, Wenqian Chen, Shiliang Feng, Qingqing Wang, Shouqin Lü, Mian Long, René Schneider, Arun Sampathkumar, Christophe Godin, Jan Traas, Yuling Jiao
Current Biology
Abstract
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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DOI:10.1016/j.cub.2020.07.076 |
论文题目: |
Microtubule-Mediated Wall Anisotropy Contributes to Leaf Blade Flattening |
英文论文题目: |
Microtubule-Mediated Wall Anisotropy Contributes to Leaf Blade Flattening |
第一作者: |
Feng Zhao, Fei Du, Hadrien Oliveri, Lüwen Zhou, Olivier Ali, Wenqian Chen, Shiliang Feng, Qingqing Wang, Shouqin Lü, Mian Long, René Schneider, Arun Sampathkumar, Christophe Godin, Jan Traas, Yuling Jiao |
英文第一作者: |
Feng Zhao, Fei Du, Hadrien Oliveri, Lüwen Zhou, Olivier Ali, Wenqian Chen, Shiliang Feng, Qingqing Wang, Shouqin Lü, Mian Long, René Schneider, Arun Sampathkumar, Christophe Godin, Jan Traas, Yuling Jiao |
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2020-09-11 |
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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. |
英文摘要: |
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. |
刊物名称: |
Current Biology |
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Current Biology |
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Feng Zhao, Fei Du, Hadrien Oliveri, Lüwen Zhou, Olivier Ali, Wenqian Chen, Shiliang Feng, Qingqing Wang, Shouqin Lü, Mian Long, René Schneider, Arun Sampathkumar, Christophe Godin, Jan Traas, Yuling Jiao. Microtubule-Mediated Wall Anisotropy Contributes to Leaf Blade Flattening. Current Biology. DOI:10.1016/j.cub.2020.07.076 |
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