Research Article Open Access

The Investigation of Organelle Genomes of Extra Nuclear Sunflower Mutants with Variegated Phenotype

Irina Dremuk1, Nikolay Kozel1, Mariya Logacheva2, Oleg Gorbachenko3, Kirill Azarin2, Nikolay Markin2, Alexander Usatov2 and Maxim Makarenko2
  • 1 Institute of Biophysics and Cell Engineering of NAS, Belarus
  • 2 Southern Federal University, Russia
  • 3 All Russia Research Institute of Oil Crops, Russia

Abstract

The comparative analysis of complete chloroplast and mitochondrial DNA sequences of the original inbred line 3629 and three extra nuclear mutant lines variegated-1, variegated-15, variegated-17, obtained by the N-nitroso-N-methylurea induced mutagenesis, was done. The studied mutant lines were presented two different phenotypes with diverse chlorophyll content: Pale/green mutant line variegated-17 with 1.8% relative (to 3629 line) chlorophyll content in mutant leaf tissue and yellow/green lines variegated-1, variegated-15 with 6.3% and 4.3% relative chlorophyll content, respectively. Each line had unique variation sites in chloroplast DNA. Among chloroplast SNP there were determined 7 nonsynonymous substitutions, which were located in psaA (variegated-1), petD, rpl36, ccsA (variegated-15), rps4, rpoA, rpoC1 (variegated-17). The SNP of variegated-17 line has resulted in the frameshift (rpoC1) and premature stop codon formations (rpoA, rpoC1). The whole genome sequencing of mitochondrial DNA mutant lines revealed no differences as compared with original line 3629. Summarizing current data and our previous research of variegated mutants we assume that pale/green variegated phenotype is associated with significant disturbance of RNA polymerase subunits genes, and the lesions in photosynthetic genes lead to yellow/green mutant phenotype.

American Journal of Biochemistry and Biotechnology
Volume 13 No. 4, 2017, 189-194

DOI: https://doi.org/10.3844/ajbbsp.2017.189.194

Submitted On: 21 September 2017 Published On: 24 October 2017

How to Cite: Dremuk, I., Kozel, N., Logacheva, M., Gorbachenko, O., Azarin, K., Markin, N., Usatov, A. & Makarenko, M. (2017). The Investigation of Organelle Genomes of Extra Nuclear Sunflower Mutants with Variegated Phenotype. American Journal of Biochemistry and Biotechnology, 13(4), 189-194. https://doi.org/10.3844/ajbbsp.2017.189.194

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Keywords

  • Variegated Mutants
  • Extra Nuclear Mutants
  • Chlorophyll Deficiency
  • Whole Genome Sequencing
  • Chloroplast DNA
  • Mitochondrial DNA
  • Sunflower
  • N-Nitroso-N-Methylurea