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The Complete Chloroplast Genome of Pearl Millet (Pennisetum glaucum (L.) R. Br.) and Comparative Analysis within the Family Poaceae

Abstract

The complete chloroplast (cp) genome sequence of Pearl millet (Pennisetum glaucum [L.] R. Br.), an important grain and forage crop in the family Poaceae, is reported in this study. The complete cp genome sequence of P. glaucum is 138,172 bp in length with 38.6% overall GC content and exhibits a typical quadripartite structure comprising one pair of inverted repeat (IR) regions (22,275 bp) separated by a small single-copy (SSC) region (12,409 bp) and a large single-copy (LSC) region (81,213). The P. glaucum cp genome encodes 110 unique genes, 76 of which are protein-coding genes, 4 ribosomal RNA (rRNA) genes, 30 transfer RNA (tRNA) genes and 18 duplicated genes in the IR region. Nine genes contain one or two introns. Whole genome alignments of cp genome were performed for genome-wide comparison. Locally collinear blocks (LCBs) identified among the cp genomes showed that they were well conserved with respect to gene organization and order. This newly determined cp genome sequence of P. glaucum will provide valuable information for the future breeding programs of valuable cereal crops in the family Poaceae.

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Correspondence to K. H. Ma.

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Communicated by M. Molnár-Láng

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Raveendar, S., Lee, G.A., Lee, K.J. et al. The Complete Chloroplast Genome of Pearl Millet (Pennisetum glaucum (L.) R. Br.) and Comparative Analysis within the Family Poaceae. CEREAL RESEARCH COMMUNICATIONS 47, 1–10 (2019). https://doi.org/10.1556/0806.46.2018.064

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Keywords

  • chloroplast
  • Pearl millet
  • phylogenetic analysis
  • quadripartite structure