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A cDNA clone encoding Brassica calmodulin

M L Chye1, C M Liu, C T Tan

  • 1Institute of Molecular and Cell Biology, National University of Singapore.

Plant Molecular Biology
|January 1, 1995
PubMed
Summary
This summary is machine-generated.

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Researchers isolated calmodulin (CaM) cDNA from Brassica juncea, finding it in multiple tissues and indicating a CaM multigene family. High CaM mRNA levels were observed in actively growing regions like leaf primordia and shoot apical meristem.

Area of Science:

  • Plant Molecular Biology
  • Gene Expression Analysis
  • Biochemistry

Background:

  • Calmodulin (CaM) is a crucial calcium-binding protein involved in various cellular processes.
  • Understanding CaM gene families and expression patterns is vital for plant development research.

Purpose of the Study:

  • To isolate and characterize calmodulin (CaM) cDNA from Brassica juncea.
  • To investigate the expression patterns of CaM mRNA in different Brassica juncea tissues and developmental stages.

Main Methods:

  • cDNA isolation and sequencing
  • Northern and Southern blot analyses
  • In situ hybridization studies

Main Results:

  • A 834 bp cDNA encoding CaM was isolated from Brassica juncea.

Related Experiment Videos

  • CaM mRNA (approx. 0.9 kb) was detected in leaf, silique, and peduncle tissues.
  • Genomic Southern analysis revealed a CaM multigene family.
  • Brassica CaM showed 100% amino acid homology with Arabidopsis CaM.
  • High CaM mRNA levels were found in leaf primordia, shoot apical meristem, and root elongation zones.

    • Conclusions:

    • Brassica juncea possesses a calmodulin multigene family.
    • CaM expression is localized to actively dividing and growing regions, suggesting a role in plant development and cell division.