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The complete chloroplast genome of Amomum tsao-ko.

ABSTRACT: Amomum tsao-ko (Zingiberaceae) is an important edible and medicinal crop. The complete chloroplast (cp) genome of A. tsao-ko was determined using Illumina sequencing platform. The size of whole cp genome was 163,648 bp, containing a small single copy (SSC) region of 15,355 bp and a large single copy (LSC) region of 88,741 bp, which were separated by a pair of inverted repeat (IRs) regions (29,776 bp). The A. tsao-ko cp genome contained 133 genes, including eight ribosomal RNA genes (4 rRNA species), 38 transfer RNA genes (30 tRNA species) and 87 protein-coding genes (79 PCG species). The overall GC content of A. tsao-ko cp genome is 36.02%. To investigate the evolution status of A. tsao-ko, as well as Zingiberales, a phylogenetic tree with A. tsao-ko and other 16 species was constructed based on their complete chloroplast genomes. Phylogenetic analysis revealed that A. tsao-ko was closely related to Alpinia zerumbet.

SUBMITTER: Ma M

PROVIDER: S-EPMC7748665 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Comparison of metabolites and variety authentication of Amomum tsao-ko and Amomum paratsao-ko using GC-MS and NIR spectroscopy.

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Project description:Amomum tsao-ko (Zingiberaceae) is a traditional Chinese medicine and condiment, and an important economic crop in the tropical forest of southwest China. However, few simple sequence repeat (SSR) markers are available in A. tsao-ko, which is hindering genetic research in this species. The aim of this study was to develop and characterize microsatellite markers for A. tsao-ko using restriction-site-associated DNA sequencing. A total of 115,482 microsatellites were identified using MISA software, and 13,411 SSR primer pairs were designed. 100 pairs of SSR primers were selected at random and used to evaluate polymorphisms among 4 A. tsao-ko samples. Finally, 23 pairs of SSR primers with clear bands and obvious polymorphism were selected for genetic diversity analysis of 72 A. tsao-ko accessions. The number of alleles and effective number of alleles per locus ranged from 2 to 6 and from 1.315 to 3.776, respectively. The observed heterozygosity ranged from 0.208 to 0.779, and the expected heterozygosity was from 0.239 to 0.735. The average values of the polymorphic information content were 0.454. Hardy-Weinberg equilibrium (HWE) analysis showed that 10 loci significantly deviated from HWE (P < 0.05). The pairwise FST and genetic distance values revealed low levels of genetic differentiation and high genetic similarity among six A. tsao-ko populations. These microsatellite markers developed will provide a valuable tool for further germplasm characterization, genetic diversity, and breeding studies in A. tsao-ko.

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Complete chloroplast genome sequences of two Amomum species (Zingiberaceae).

Project description:Amomum tsao-ko and Amomum paratsaoko are well known medicinal and edible plants with a strong fragrance and flavour in China. Here, we have sequenced the two complete chloroplast genomes of Amomum tsao-ko and Amomum paratsaoko, which are 163,612?bp and 163,487?bp in length, respectively, and exhibited LSC and SSC regions separated by a pair of inverted repeat regions. The cp genome of A. tsao-ko has 120 annotated genes, including 82 protein-coding genes, while A. paratsaoko has 121 annotated genes, including 83 protein-coding genes. Both cp genomes contained 30 tRNA genes and 8 rRNA genes. Phylogenetic analysis using a total chloroplast genome DNA sequence of 28 species revealed a close relationship between A. tsao-ko and A. paratsaoko with 100% bootstrap value.

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The complete chloroplast genome sequence of Amomum villosum Lour.

Project description:Amomum villosum Lour. (Zingiberaceae) is an important edible and medicinal crop. The complete chloroplast (cp) genome of A. villosum was determined using Illumina sequencing platform. The size of whole cp genome was 164,069 bp, containing a small single copy (SSC) region of 15,353 bp and a large single copy (LSC) region of 88,798 bp, which were separated by a pair of inverted repeat (IRs) regions (29,959 bp). The A. villosum cp genome contained 133 genes, including eight ribosomal RNA genes (4 rRNA species), 38 transfer RNA genes (30 tRNA species) and 87 protein-coding genes (79 PCG species). The overall GC content of A. villosum cp genome is 36.05%. To investigate the evolution status of A. villosum, as well as Zingiberales, a phylogenetic tree with A. villosum and other 21 species was constructed based on their complete chloroplast genomes. Phylogenetic analysis revealed that A. villosum was closely related to Amomum krervanh.

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The Complete Amomum kravanh Chloroplast Genome Sequence and Phylogenetic Analysis of the Commelinids.

Project description:Amomum kravanh is an important edible and medicinal herb, the dried fruits of which are widely used in traditional herbal medicine as cardamom. We sequenced and analyzed the complete chloroplast (cp) genome of A. kravanh with herbgenomics technologies. The size of the A. kravanh cp genome was 162,766 bp, which consisted of long (LSC; 87,728 bp) and short (SSC; 15,390 bp) single-copy regions, separated by a pair of inverted repeats (IRs; 29,824 bp). The genome encoded 114 unique genes, including 80 protein-coding genes, 30 tRNAs and four rRNAs. A total of 299 simple sequence repeats (SSRs) were identified in the A. kravanh cp genome, which provides an effective method to study species identification and population genetics of the medicinal plant. Moreover, one complement, 12 forward, 12 palindrome and two reverse repeats were detected. Comparative cp genome sequence analysis of four Zingiberaceae species indicated that their intergenic spacers are highly divergent, although the gene order, gene content and genome structure differed only minimally. In particular, there was a remarkable expansion of the IR regions in the A. kravanh cp genome. Phylogenetic analysis strongly supported a sister relationship between A. kravanh and Alpinia zerumbet. This study identified the unique characteristics of the A. kravanh cp genome and might provide valuable information for future studies aiming for Amomum identification, and provide insights into the taxonomy of the commelinids.

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