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Related Experiment Videos

Development and functions of seed transfer cells.

R D. Thompson1, G Hueros, H -A. Becker

  • 1MPI für Züchtungsforschung, Carl-von-Linné Weg 10, D-50829, Koln, Germany

Plant Science : an International Journal of Experimental Plant Biology
|April 12, 2001
PubMed
Summary

Specialized plant transfer cells, with unique wall ingrowths, facilitate nutrient transport during seed development. Their function is regulated by sugar levels and they may also protect seeds from pathogens.

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Area of Science:

  • Plant Cell Biology
  • Plant Physiology
  • Molecular Biology

Background:

  • Transfer cells are specialized plant cells with wall ingrowths that increase plasmalemma surface area for solute transport.
  • These cells are crucial in seed filling, particularly in cereals and legumes, mediating the transfer of amino acids, sucrose, and monosaccharides.

Purpose of the Study:

  • To review the contributions of symporter proteins and apoplastic invertases to solute transfer in plant cells.
  • To discuss the role of sugar levels in regulating transfer cell function and differentiation.
  • To explore the potential role of transfer cells in protecting developing seeds from pathogens.

Main Methods:

  • Review of existing literature on transfer cell function, development, and molecular mechanisms.

Related Experiment Videos

  • Analysis of gene expression patterns in transfer cells, particularly in maize endosperm.
  • Functional characterization of transfer layer-specific promoters.

    • Main Results:

    • Symporter proteins and apoplastic invertases are key players in solute assimilation and distribution.
    • Early expression of invertase and monosaccharide transporters influences sugar distribution and cell number.
    • Maize endosperm transfer layers highly express genes for antipathogenic proteins, suggesting a protective role.

    Conclusions:

    • Transfer cell differentiation is developmentally controlled and influenced by sugar levels.
    • Transfer cells play a vital role in nutrient allocation and potentially in seed defense.
    • Further research is needed to understand the role of cytoskeletal components in transfer cell morphology.