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Related Concept Videos

Plasmodesmata02:32

Plasmodesmata

The organs in a multicellular organism’s body are made up of tissues formed by cells. To work together cohesively, cells must communicate. One way that cells communicate is through direct contact with other cells. The points of contact that connect adjacent cells are called intercellular junctions.
Plasmodesmata01:20

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In a multicellular organism, cells must communicate to work together in a coordinated manner. One way that cells communicate is through direct contact with other cells. The points of contact that connect adjacent cells are called intercellular junctions.
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Contact-dependent Signaling01:19

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Contact-dependent signaling, as the name suggests, requires that communicating cells be in direct contact with each other. This is achieved either through receptor-ligand interactions or by specialized cytoplasmic channels that allow the flow of small molecules between cells. In animal cells, channels called gap junctions facilitate contact-dependent signaling in certain tissues, whereas, plasmodesmata perform a similar function in plants.
Gap Junctions
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Related Experiment Video

Updated: May 9, 2026

Lateral Root Inducible System in Arabidopsis and Maize
09:23

Lateral Root Inducible System in Arabidopsis and Maize

Published on: January 14, 2016

Symplastic intercellular connectivity regulates lateral root patterning.

Yoselin Benitez-Alfonso1, Christine Faulkner, Ali Pendle

  • 1John Innes Centre, Norwich Research Park, Norwich, Norfolk NR4 7UH, UK. y.benitez-alfonso@leeds.ac.uk

Developmental Cell
|July 16, 2013
PubMed
Summary
This summary is machine-generated.

Cell-to-cell communication via plasmodesmata (PD) regulates lateral root formation in Arabidopsis. Callose deposition controls PD connectivity, impacting root architecture and plant performance.

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Area of Science:

  • Plant biology
  • Developmental biology
  • Cellular communication

Background:

  • Cell-to-cell communication is crucial for coordinating cellular behavior in organ development.
  • Mobile signals are known to influence lateral root development, but the role of plasmodesmata (PD) has been unexplored.
  • Plasmodesmata are channels connecting plant cells, regulating the passage of molecules.

Purpose of the Study:

  • To investigate the role of plasmodesmata (PD)-mediated transport in lateral root organogenesis in Arabidopsis.
  • To understand how symplastic connectivity and callose deposition regulate lateral root development.

Main Methods:

  • Analysis of symplastic connectivity changes during lateral root development in Arabidopsis.
  • Investigation of callose deposition and its impact on molecular flux through plasmodesmata.
  • Identification and characterization of plasmodesmal-localized β-1,3 glucanases (PdBGs) involved in callose regulation.
  • Phenotypic analysis of plants with altered callose turnover.

Main Results:

  • Changes in symplastic connectivity, regulated by callose deposition at PD, were observed during lateral root organogenesis.
  • Two plasmodesmal-localized β-1,3 glucanases (PdBGs) were identified as key regulators of callose accumulation.
  • Altered callose turnover resulted in phenotypes similar to those observed with altered PdBG activity, highlighting the role of callose.
  • The number and distribution of lateral roots were directly influenced by PdBG activity and callose levels.

Conclusions:

  • Regulation of callose deposition at plasmodesmata is critical for controlling symplastic connectivity during lateral root formation.
  • Plasmodesmata-mediated cell-to-cell communication, modulated by callose, plays a fundamental role in determining lateral root patterning.
  • This regulation of lateral root formation impacts overall root architecture and optimizes plant performance.