Genomic analysis reveals the genetic diversity, population structure, evolutionary history and relationships of Chinese pepper
| Autor: | Zhenshan Liu, Yang Hu, Tuxi Yang, Anzhi Wei, Shijing Feng, Jieyun Tian |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine Plant evolution Genetic diversity Demographic history Population genetics Species distribution Plant Science Horticulture Biology 01 natural sciences Biochemistry Article Gene flow 03 medical and health sciences 030104 developmental biology Evolutionary biology Pepper Genetics Domestication 010606 plant biology & botany Biotechnology |
| Zdroj: | Horticulture Research |
| ISSN: | 2052-7276 2662-6810 |
| Popis: | Chinese pepper, mainly includingZanthoxylum bungeanumandZanthoxylum armatum, is an economically important crop popular in Asian countries due to its unique taste characteristics and potential medical uses. Numerous cultivars of Chinese pepper have been developed in China through long-term domestication. To better understand the population structure, demographic history, and speciation of Chinese pepper, we performed a comprehensive analysis at a genome-wide level by analyzing 38,395 genomic SNPs that were identified in 112 cultivated and wild accessions using a high-throughput genome-wide genotyping-by-sequencing (GBS) approach. Our analysis provides genetic evidence of multiple splitting events occurring between and within species, resulting in at least four clades inZ. bungeanumand two clades inZ. armatum. Despite no evidence of recent admixture between species, we detected substantial gene flow within species. Estimates of demographic dynamics and species distribution modeling suggest that climatic oscillations during the Pleistocene (including the Penultimate Glaciation and the Last Glacial Maximum) and recent domestication events together shaped the demography and evolution of Chinese pepper. Our analyses also suggest that southeastern Gansu province is the most likely origin ofZ. bungeanumin China. These findings provide comprehensive insights into genetic diversity, population structure, demography, and adaptation inZanthoxylum. |
| Databáze: | OpenAIRE |
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