Comparative Plastomes of Curcuma alismatifolia (Zingiberaceae) Reveal Diversified Patterns among 56 Different Cut-Flower Cultivars

Curcuma alismatifolia (Zingiberaceae) is an ornamental species with high economic value due to its recent rise in popularity among floriculturists. Cultivars within this species have mixed genetic backgrounds from multiple hybridization events and can be difficult to distinguish via morphological an...

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Bibliographic Details
Published in:Genes 2023-08, Vol.14 (9), p.1743
Main Authors: Wang, Jie, Liao, Xuezhu, Li, Yongyao, Ye, Yuanjun, Xing, Guoming, Kan, Shenglong, Nie, Liyun, Li, Sen, Tembrock, Luke R., Wu, Zhiqiang
Format: Article
Language:English
Subjects:
Cultivars
Curcuma alismatifolia
Genes
Genomes
Genomics
Germplasm
Hybridization
Morphology
Phylogenetics
Phylogeny
Plant breeding
Plastomes
Proteins
rRNA
Software
Trees
tRNA
Zingiberaceae
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Summary:Curcuma alismatifolia (Zingiberaceae) is an ornamental species with high economic value due to its recent rise in popularity among floriculturists. Cultivars within this species have mixed genetic backgrounds from multiple hybridization events and can be difficult to distinguish via morphological and histological methods alone. Given the need to improve identification resources, we carried out the first systematic study using plastomic data wherein genomic evolution and phylogenetic relationships from 56 accessions of C. alismatifolia were analyzed. The newly assembled plastomes were highly conserved and ranged from 162,139 bp to 164,111 bp, including 79 genes that code for proteins, 30 tRNA genes, and 4 rRNA genes. The A/T motif was the most common of SSRs in the assembled genomes. The Ka/Ks values of most genes were less than 1, and only two genes had Ka/Ks values above 1, which were rps15 (1.15), and ndhl (1.13) with petA equal to 1. The sequence divergence between different varieties of C. alismatifolia was large, and the percentage of variation in coding regions was lower than that in the non-coding regions. Such data will improve cultivar identification, marker assisted breeding, and preservation of germplasm resources.
ISSN:2073-4425
2073-4425
DOI:10.3390/genes14091743