摘要详情

ID / 提交时间

389 / 2019-02-19 10:25:30

标题

A single microtubule based mechanism accounts for the formation of both flat and cylindrical organs during plant development

关键字

organ formation,microtubule,machanical stress,leaf

主题及专题

全体主题 > Development

状态

摘要录用

作者

Feng Zhao / Laboratoire de Reproduction et Développement des Plantes, Université de Lyon, ENS de Lyon, UCBL, INRA, CNRS, 46 Allée d'Italie, 69364 Lyon CEDEX O7, France

Fei Du / State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China

Hadrien Oliveri / Laboratoire de Reproduction et Développement des Plantes, Université de Lyon, ENS de Lyon, UCBL, INRA, CNRS, 46 Allée d'Italie, 69364 Lyon CEDEX O7, France

Lüwen Zhou / Faculty of Mechanical Engineering and Mechanics, Ningbo University, Ningbo, Zhejiang 315211, China

Olivier Ali / Laboratoire de Reproduction et Développement des Plantes, Université de Lyon, ENS de Lyon, UCBL, INRA, CNRS, 46 Allée d'Italie, 69364 Lyon CEDEX O7, France

Wenqian Chen / Laboratoire de Reproduction et Développement des Plantes, Université de Lyon, ENS de Lyon, UCBL, INRA, CNRS, 46 Allée d'Italie, 69364 Lyon CEDEX O7, France

Shiliang Feng / Faculty of Mechanical Engineering and Mechanics, Ningbo University, Ningbo, Zhejiang 315211, China

Qingqing Wang / State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China

Shouqin Lü / Key Laboratory of Microgravity (National Microgravity Laboratory), Center of Biomechanics and Bioengineering, and Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mec

Mian Long / Key Laboratory of Microgravity (National Microgravity Laboratory), Center of Biomechanics and Bioengineering, and Beijing Key Laboratory of Engineered Construction and Mechanobiology, Institute of Mec

René Schneider / Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany

Arun Sampathkumar / Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany

Christophe Godin / Laboratoire de Reproduction et Développement des Plantes, Université de Lyon, ENS de Lyon, UCBL, INRA, CNRS, 46 Allée d'Italie, 69364 Lyon CEDEX O7, France

Jan Traas / Laboratoire de Reproduction et Développement des Plantes, Université de Lyon, ENS de Lyon, UCBL, INRA, CNRS, 46 Allée d'Italie, 69364 Lyon CEDEX O7, France

Yuling Jiao / State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China

摘要

During the postembryonic development, plants reproducibly form organs with either a flattened shape (like leaf and leaf-like organs) or a cylindrical shape (like root and stem), which undergoes lateral growth and radial symmetric growth, respectively. How these two types of growth manner are established and contribute to the final organ shapes are largely unknown. In this study, by combining experimental evidence and mathematical modeling data, we uncovered a general principle accounting for the formation of both flat and cylindrical organs, in which a microtubule based mechanism plays a central role. The microtubule alignment along the mechanical stress patterns in internal tissues amplifies the initial shape of organ primordium into more flattened or radial symmetric morphology. It is also revealed that the microtubule alignment in periclinal and anticlinal cell walls make distinct contributions to organ shape formation. Our results support and explain the plausible mechanism of how the laminate leaf evolved from branches.