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Mitochondrial relationships between various chamomile accessions.

Joana Ruzicka1, Marion Hacek2, Johannes Novak2

  • 1Institute of Animal Nutrition and Functional Plant Compounds, University of Veterinary Medicine Vienna, Veterinaerplatz 1, A-1210, Vienna, Austria. Joana.Ruzicka@vetmeduni.ac.at.

Journal of Applied Genetics
|December 9, 2020
PubMed
Summary
This summary is machine-generated.

Mitochondrial genome variation in chamomile (Matricaria chamomilla L.) was assessed using 36 SNP markers. Twenty mitochondrial haplotypes were identified across 13 accessions, revealing significant genetic diversity and substitutions within the mitochondrial genome.

Keywords:
AsteraceaeHigh resolution melting (HRM)Matricaria chamomillaMitochondrial genomeSingle nucleotide polymorphism (SNP)

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Area of Science:

  • Plant genetics
  • Molecular biology
  • Medicinal botany

Background:

  • Matricaria chamomilla L. is a widely used medicinal and tea plant.
  • Understanding genetic variation is crucial for crop improvement and conservation.
  • Mitochondrial genomes play a key role in plant physiology and evolution.

Purpose of the Study:

  • To assess mitochondrial genome variation in cultivated chamomile accessions.
  • To identify distinct mitochondrial haplotypes (mitotypes) within Matricaria chamomilla.
  • To evaluate genetic distances and variability among different chamomile accessions.

Main Methods:

  • High-resolution melting (HRM) analysis was employed.
  • Thirty-six mitochondrial single nucleotide polymorphism (SNP) markers were utilized.
  • DNA was extracted from 155 individuals across 13 chamomile accessions.

Main Results:

  • Twenty mitochondrial haplotypes were identified among 13 chamomile accessions.
  • Significant genotypic variability was observed, particularly in Croatian and Argentinian accessions.
  • Most detected mitotypes were infrequent, indicating high substitution rates in the mitochondrial genome.
  • Frequent mitotypes (MT1, MT9, MT17) were distributed across multiple accessions and geographical origins.

Conclusions:

  • Chamomile exhibits substantial mitochondrial genome variation.
  • Geographical origin influences mitochondrial haplotype distribution.
  • The findings provide insights into chamomile's genetic diversity for breeding and cultivation programs.