Genetic Diversity of Medicinal and Aromatic Crop

A special issue of Agriculture (ISSN 2077-0472). This special issue belongs to the section "Genotype Evaluation and Breeding".

Deadline for manuscript submissions: closed (25 December 2022) | Viewed by 3035

Special Issue Editor


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Guest Editor
Group of Horticultural Plant Genetics, Department of Plant Biotechnology, Institute of Genetics and Biotechnology, Hungarian University of Agriculture and Life Sciences, 29-43 Villányi út, 1118 Budapest, Hungary
Interests: rhodiola rosea; medicinal plants; genetic diversity; molecular markers

Special Issue Information

Dear Colleagues,

Medicinal plants, either cultivated or collected from wild populations, are the raw materials for both traditional and modern medicines. Many plants valued for their aromatic properties are used not only in the pharmaceutical industry, but also in the food and condiment industry, perfumery, or even in agriculture. The introduction into cultivation and the selection and/or breeding of high-value cultivars have an adverse effect on the genetic diversity of the cultivated species. Likewise, collection from wild populations, especially overexploitation, also reduces the species’ genetic polymorphism. Furthermore, the accelerated change of climate and environmental factors also does not favor the slow process of adaptation, which again results in the loss of the species’ genetic potential. For these reasons, assessing the genetic diversity of medicinal and aromatic plants is a continuous and, given the high number of species, never-ending story and a duty of the researchers engaged in the field. Knowledge of the available genetic polymorphism might aid in the breeding or the conservation and protection of endangered species. One can choose from a wide range of molecular markers for studying genetic diversity, starting from random, not sequence-specific markers to more specific markers such as microsatellites to the most state-of-the-art SNP markers.

In the Special Issue of Agriculture, our aim is to collect the most recent results of studies on the genetic diversity of both cultivated and collected medicinal and aromatic plant species. We welcome submissions in the form of original papers on the recent advances of genetic studies of the field.

Kind regards,
Dr. Zsuzsanna György
Guest Editor

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Keywords

  • genetic polymorphism
  • medicinal herb
  • wild medicinal and aromatic plants
  • cultivated medicinal and aromatic plants
  • molecular markers
  • nuclear markers
  • chloroplast markers
  • population structure
  • cultivars
  • chemotypes
  • haplotypes

Published Papers (2 papers)

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Research

14 pages, 7884 KiB  
Article
Assessment of Genetic Diversity of the Medicinal and Aromatic Crop, Amomum tsao-ko, Using PAAP and CDDP Markers
by Mengli Ma, Zhenhua Yan and Bingyue Lu
Agriculture 2022, 12(10), 1536; https://0-doi-org.brum.beds.ac.uk/10.3390/agriculture12101536 - 23 Sep 2022
Cited by 1 | Viewed by 1316
Abstract
Amomum tsao-ko (Zingiberaceae) is a well-known medicinal and aromatic crop with a long history of cultivation in China. Food and pharmaceutical industries widely use its dried ripe fruit. In this study, 12 promoter anchored amplified polymorphism (PAAP) primer pairs and 12 conserved DNA-derived [...] Read more.
Amomum tsao-ko (Zingiberaceae) is a well-known medicinal and aromatic crop with a long history of cultivation in China. Food and pharmaceutical industries widely use its dried ripe fruit. In this study, 12 promoter anchored amplified polymorphism (PAAP) primer pairs and 12 conserved DNA-derived polymorphism (CDDP) primers were used to assess the genetic diversity and population structure of 96 A. tsao-ko accessions from eight cultivated populations. A total of 98 polymorphic loci were detected by 12 PAAP primers with 8.167 polymorphic loci per primer, and 203 polymorphic loci were observed using 12 CDDP primers with 16.92 alleles per primer. Nei’s gene diversity (PAAP, H = 0.207; CDDP, H = 0.188) and Shannon’s information index (PAAP, I = 0.329; CDDP, I = 0.305) revealed the relatively high level of genetic diversity in these populations of A. tsao-ko. The genetic differentiation coefficient (Gst) for the populations was 0.151 (PAAP) and 0.128 (CDDP), which indicated that 84.9% and 87.2%, respectively, of the genetic variation was within populations. Analysis of molecular variance (AMOVA) also revealed that genetic differentiation of the A. tsao-ko populations mainly occurred within populations (91% variation within populations for both PAAP and CDDP). Genetic identity among the investigated populations was high for PAAP (0.957) and CDDP (0.967). Cluster and principal coordinate analysis (PCoA) grouped the 96 A. tsao-ko accessions into two major groups. Accession classification was consistent with population structure analysis. Overall, these results will be useful for A. tsao-ko germplasm resource characterization, conservation, and utilization. Full article
(This article belongs to the Special Issue Genetic Diversity of Medicinal and Aromatic Crop)
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12 pages, 1800 KiB  
Article
Genetic Diversity and Relationships of Opium Poppy Accessions Based on SSR Markers
by Zsuzsanna György, Sameena Alam, Priyanka Priyanka and Éva Zámboriné Németh
Agriculture 2022, 12(9), 1343; https://0-doi-org.brum.beds.ac.uk/10.3390/agriculture12091343 - 30 Aug 2022
Cited by 3 | Viewed by 1725
Abstract
Opium poppy is one of the most important medicinal plant species cultivated in several regions of the world for pharmaceutical and food purposes. Although it has been bred and used in many countries for centuries, taxonomical studies on the intraspecific variability are still [...] Read more.
Opium poppy is one of the most important medicinal plant species cultivated in several regions of the world for pharmaceutical and food purposes. Although it has been bred and used in many countries for centuries, taxonomical studies on the intraspecific variability are still not numerous. In the course of this study, the genetic diversity of 58 opium poppy accessions were assessed with SSR markers. Out of the 25 tested SSR markers, only 19 showed successful amplification and seven were found to reveal polymorphism. These seven markers produced 2–11 alleles within the size range of 144–280 bp. PIC value varied between 0.284 and 0.767, expected heterozygosity was between 0.136 and 1, and observed heterozygosity was between 0.344 and 0.794. Altogether, a low genetic diversity was found, and several accessions have been characterized with the same SSR allele profile. The clustering in the PCoA co-ordinate system indicates four groups, which is confirmed by the STRUCTURE analysis as well and reflects the known relationships of hybrid cultivars in several cases. The landrace taxa clearly deviate from the majority of cultivars selected for industrial purposes. The applied SSR markers were not able to distinguish the genotypes according to their geographic origin or seed color. However, in several cases, the grouping in the PCoA system reflected a diversification connected to alkaloid content and petal color of the accessions. Our results demonstrate the importance of further molecular marker studies focusing on genotypes with different alkaloid content and useful agronomical traits in order to establish more effective breeding. Full article
(This article belongs to the Special Issue Genetic Diversity of Medicinal and Aromatic Crop)
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