Hybridization among distantly related species: Examples from the polyploid genus Curcuma (Zingiberaceae)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F16%3A10328983" target="_blank" >RIV/00216208:11310/16:10328983 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00023272:_____/16:N0000246

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.ympev.2016.04.017" target="_blank" >http://dx.doi.org/10.1016/j.ympev.2016.04.017</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ympev.2016.04.017" target="_blank" >10.1016/j.ympev.2016.04.017</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Hybridization among distantly related species: Examples from the polyploid genus Curcuma (Zingiberaceae)

Popis výsledku v původním jazyce

Discerning relationships among species evolved by reticulate and/or polyploid evolution is not an easy task, although it is widely discussed. The economically important genus Curcuma (ca. 120 spp.; Zingiberaceae), broadly distributed in tropical SE Asia, is a particularly interesting example of a group of palaeopolyploid origin whose evolution is driven mainly by hybridization and polyploidization. Although a phylogeny and a new infrageneric classification of Curcuma, based on commonly used molecular markers (ITS and cpDNA), have recently been proposed, significant evolutionary questions remain unresolved. We applied a multilocus approach and a combination of modern analytical methods to this genus to distinguish causes of gene tree incongruence and to identify hybrids and their parental species. Five independent regions of nuclear DNA (DCS, GAPDH, GLOBOSA3, LEAFY, ITS) and four non-coding cpDNA regions (trnL-trnF, trnT-trnL, psbA-trnH and matK), analysed as a single locus, were employed to construct a species tree and hybrid species trees using *BEAST and STEM-hy. Detection of hybridogenous species in the dataset was also conducted using the posterior predictive checking approach as implemented in JML. The resulting species tree outlines the relationships among major evolutionary lineages within Curcuma, which were previously unresolved or which conflicted depending upon whether they were based on ITS or cpDNA markers. Moreover, by using the additional markers in tests of plausible topologies of hybrid species trees for C. vamana, C. candida, C. roscoeana and C. myanmarensis suggested by previous molecular and morphological evidence, we found strong evidence that all the species except C. candida are of subgeneric hybrid origin.

Název v anglickém jazyce

Hybridization among distantly related species: Examples from the polyploid genus Curcuma (Zingiberaceae)

Popis výsledku anglicky

Discerning relationships among species evolved by reticulate and/or polyploid evolution is not an easy task, although it is widely discussed. The economically important genus Curcuma (ca. 120 spp.; Zingiberaceae), broadly distributed in tropical SE Asia, is a particularly interesting example of a group of palaeopolyploid origin whose evolution is driven mainly by hybridization and polyploidization. Although a phylogeny and a new infrageneric classification of Curcuma, based on commonly used molecular markers (ITS and cpDNA), have recently been proposed, significant evolutionary questions remain unresolved. We applied a multilocus approach and a combination of modern analytical methods to this genus to distinguish causes of gene tree incongruence and to identify hybrids and their parental species. Five independent regions of nuclear DNA (DCS, GAPDH, GLOBOSA3, LEAFY, ITS) and four non-coding cpDNA regions (trnL-trnF, trnT-trnL, psbA-trnH and matK), analysed as a single locus, were employed to construct a species tree and hybrid species trees using *BEAST and STEM-hy. Detection of hybridogenous species in the dataset was also conducted using the posterior predictive checking approach as implemented in JML. The resulting species tree outlines the relationships among major evolutionary lineages within Curcuma, which were previously unresolved or which conflicted depending upon whether they were based on ITS or cpDNA markers. Moreover, by using the additional markers in tests of plausible topologies of hybrid species trees for C. vamana, C. candida, C. roscoeana and C. myanmarensis suggested by previous molecular and morphological evidence, we found strong evidence that all the species except C. candida are of subgeneric hybrid origin.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

EF - Botanika

OECD FORD obor

—

Projekt

<a href="/cs/project/GA14-13541S" target="_blank" >GA14-13541S: Evoluce, diversifikace a biogeografie polyploidní čeledi Zingiberaceae: synergie fylogenomiky, cytogenomiky, geologické a klimatické historie</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Molecular Phylogenetics and Evolution

ISSN

1055-7903

e-ISSN

—

Svazek periodika

100

Číslo periodika v rámci svazku

july

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

19

Strana od-do

303-321

Kód UT WoS článku

000377055800027

EID výsledku v databázi Scopus

2-s2.0-84964422586