BMB Reports 2018; 51(7): 317-318
Cellular coordination controlling organ separation and surface integrity in plants
Yuree Lee1,* & June M. Kwak1,2,*
1Center for Plant Aging Research, Institute for Basic Science, Daegu 42988, 2Department of New Biology, DGIST, Daegu 42988, Korea
Correspondence to: Yuree Lee, E-mail:; June M. Kwak, E-mail:
Received: June 12, 2018; Published online: July 31, 2018.
© Korean Society for Biochemistry and Molecular Biology. All rights reserved.

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Plants are unable to relocate themselves to a more favorable location and thus have to deal with developmental programs and environmental cues wherever they happen to be. It is yet largely unknown how plant cells coordinate cellular activities and architectures to accomplish developmental processes and respond to environmental changes. By identifying and establishing a new cellular model system, we have discovered that two neighboring cell types in the abscission zone (AZ) of Arabidopsis flowers coordinate their activities to ensure a precise "cut" through a highly restricted area of plant tissue to bring about organ separation. From this perspective, we further discuss the essence of cellular coordination in AZ, the key molecules controlling the organ separation, and relevant implications.
Keywords: Abscission, Cell wall processing, Lignin molecular brace, Reactive oxygen species

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