New morphological and DNA evidence supports the existence of Calligonum jeminaicum Z. M. Mao (Calligoneae, Polygonaceae) in China
| Autor: | Wei Shi, Borong Pan, Pei-Liang Liu, Jun Wen, Ying Feng |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Asia
Calligonum Molecular biology Population Plant Science Biology DNA barcoding DNA sequencing molecular phylogenetics Magnoliopsida Critically endangered Central Asia IUCN lcsh:Botany IUCN Red List Plantae education Ecology Evolution Behavior and Systematics Taxonomy Calligonum mongolicum complex education.field_of_study Cenozoic desert plant Species Inventories biology.organism_classification Polygonaceae Caryophyllales lcsh:QK1-989 Tracheophyta Chloroplast DNA Evolutionary biology morphological traits Molecular phylogenetics Research Article Identification key |
| Zdroj: | PhytoKeys 132: 53-73 PhytoKeys, Vol 132, Iss, Pp 53-73 (2019) PhytoKeys |
| ISSN: | 1314-2003 1314-2011 |
| DOI: | 10.3897/phytokeys.132.34981 |
| Popis: | Calligonum jeminaicumZ. M. Mao, a species regarded as endemic to China, was thought to be nonexistent owing to a lack of scientific records. The similarity ofC. jeminaicumtoC. mongolicumTurcz. warranted an investigation into the taxonomical relationship between these species. In this study, a naturally occurring population ofC. jeminaicumwas discovered and the taxonomical relationships of this species withC. mongolicumwere resolved. Morphological traits, including fruit and flower characteristics, as well as nuclear (ETS, ITS) and chloroplast (psbA-trnH,ycf6-psbM,rpl32-trnL,rbcL, andtrnL-F) DNA sequence data were studied to confirm the taxonomic status ofC. jeminaicum. The nrDNA data (ITS1-2 and ETS) fromC. jeminaicumreflected variability from the wholeC. mongolicumcomplex, showing distinctive haplotypes in the Calligonum sect. Medusa Sosk. & Alexandr. The cpDNA data supplied similar evidence, showing unique branching in Bayesian and ML tree analyses. The specific status ofC. jeminaicumis confirmed based on both morphological and molecular analyses. Here we present a revised description ofC. jeminaicumalong with its DNA barcode and discuss suggestions for the conservation of this species. Based on current evidence, this species was evaluated as Critically Endangered (CR) according to the IUCN criteria. |
| Databáze: | OpenAIRE |
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