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Wheat and rye lectins are synthesized during seed development, with a significant increase in primary axes. Stored mRNAs are involved in lectin synthesis during early germination.

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Area of Science:

  • Plant biochemistry
  • Molecular biology
  • Seed development

Background:

  • Lectins are proteins synthesized during seed formation in plants like wheat and rye.
  • These lectins accumulate significantly in the primary axes during organ development.

Purpose of the Study:

  • To investigate the kinetics of lectin synthesis during early germination in wheat and rye.
  • To understand the role of stored messenger RNAs (mRNAs) in residual lectin synthesis.

Main Methods:

  • Utilized a highly specific procedure for isolating cereal lectins.
  • Monitored lectin synthesis kinetics during the early stages of germination.

Main Results:

  • Observed exponential accumulation of lectins in primary axes during seed formation.
  • Confirmed lectin synthesis in germinating embryos, albeit at a lower level.
  • Identified the involvement of stored mRNAs in this residual synthesis.

Conclusions:

  • Lectin synthesis is tightly regulated during wheat and rye seed development, with a notable "outburst" during primary axis formation.
  • Stored mRNAs play a crucial role in sustaining lectin synthesis during early germination in these cereal species.