Plant Cell Reports

, Volume 28, Issue 8, pp 1147–1157 | Cite as

Molecular mechanisms controlling pavement cell shape in Arabidopsis leaves

  • Pingping Qian
  • Suiwen Hou
  • Guangqin Guo


Pavement cells have an interlocking jigsaw puzzle-shaped leaf surface pattern. Twenty-three genes involved in the pavement cell morphogenesis were discovered until now. The mutations of these genes through various means lead to pavement cell shape defects, such as loss or lack of interdigitation, the reduction of lobing, gaps between lobe and neck regions in pavement cells, and distorted trichomes. These phenotypes are affected by the organization of microtubules and microfilaments. Microtubule bands are considered corresponding with the neck regions of the cell, while lobe formation depends on patches of microfilaments. The pathway of Rho of plant (ROP) GTPase signaling cascades regulates overall activity of the cytoskeleton in pavement cells. Some other proteins, in addition to the ROPs, SCAR/WAVE, and ARP2/3 complexes, are also involved in the pavement cell morphogenesis.


Arabidopsis Morphogenesis Pavement cell Cytoskeleton ARP2/3 SCAR/WAVE ROP 



This work is supported by the National Basic Research Program of China (grant no. 2009CB941500), the National Natural Science Foundation of China (NSFC) (grant no. 30670124), and program for New Century Excellent Talents of the Ministry of Education (grant no. NCET-06-0897).


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Copyright information

© Springer-Verlag 2009

Authors and Affiliations

  1. 1.Key Laboratory of Arid and Grassland Ecology, Ministry of Education, School of Life ScienceLanzhou UniversityGansuChina

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