The Mediterranean: the cradle of Anthoxanthum (Poaceae) diploid diversity

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F17%3A00478728" target="_blank" >RIV/67985939:_____/17:00478728 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14740/17:00095158 RIV/60460709:41330/17:74539 RIV/00216208:11310/17:10362451

Výsledek na webu

<a href="http://dx.doi.org/10.1093/aob/mcx021" target="_blank" >http://dx.doi.org/10.1093/aob/mcx021</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/aob/mcx021" target="_blank" >10.1093/aob/mcx021</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The Mediterranean: the cradle of Anthoxanthum (Poaceae) diploid diversity

Popis výsledku v původním jazyce

The aims of the study were to reveal: (1) evolutionary lineages of the diploid taxa and their genetic differentiation, (2) the past distribution of the rediscovered 'Mediterranean diploid', and (3) possible migration routes of diploids in the Mediterranean. A combined approach involving sequencing of two plastid regions (trnL-trnF and rpl32-trnL), nrDNA ITS, rDNA FISH analyses, climatic niche characterization and spatio-temporal modelling was used. Among the examined diploid species, only two well-differentiated evolutionary lineages were recognized: Anthoxanthum gracile and A. alpinum. The other taxa - A. aristatum, A. ovatum, A. maderense and the 'Mediterranean diploid' - form a rather intermixed group based on the examined molecular data. In situ rDNA localization enabled identification of the ancestral Anthoxanthum karyotype, shared by A. gracile and two taxa from the crown group. For the studied taxa, ancestral location probabilities for six discrete geographical regions in the Mediterranean were proposed and likely scenarios of gradual expansion from them were suggested. Modelling past and present distributions shows that the 'Mediterranean diploid' has already been occurring in the same localities for 120 000 years. Highly congruent results were obtained and dated the origin and first diversification of Anthoxanthum to the Miocene. The later divergence probably took place in the Pleistocene and started polyploid evolution within the genus. The most recent diversification event is still occurring, and incomplete lineage sorting prevents full diversification of taxa at the molecular level, despite clear separation based on climatic niches. The 'Mediterranean diploid' is hypothesized to be a possible relic of the most recent common ancestor of Anthoxanthum due to their sharing of ancestral features.

Název v anglickém jazyce

The Mediterranean: the cradle of Anthoxanthum (Poaceae) diploid diversity

Popis výsledku anglicky

The aims of the study were to reveal: (1) evolutionary lineages of the diploid taxa and their genetic differentiation, (2) the past distribution of the rediscovered 'Mediterranean diploid', and (3) possible migration routes of diploids in the Mediterranean. A combined approach involving sequencing of two plastid regions (trnL-trnF and rpl32-trnL), nrDNA ITS, rDNA FISH analyses, climatic niche characterization and spatio-temporal modelling was used. Among the examined diploid species, only two well-differentiated evolutionary lineages were recognized: Anthoxanthum gracile and A. alpinum. The other taxa - A. aristatum, A. ovatum, A. maderense and the 'Mediterranean diploid' - form a rather intermixed group based on the examined molecular data. In situ rDNA localization enabled identification of the ancestral Anthoxanthum karyotype, shared by A. gracile and two taxa from the crown group. For the studied taxa, ancestral location probabilities for six discrete geographical regions in the Mediterranean were proposed and likely scenarios of gradual expansion from them were suggested. Modelling past and present distributions shows that the 'Mediterranean diploid' has already been occurring in the same localities for 120 000 years. Highly congruent results were obtained and dated the origin and first diversification of Anthoxanthum to the Miocene. The later divergence probably took place in the Pleistocene and started polyploid evolution within the genus. The most recent diversification event is still occurring, and incomplete lineage sorting prevents full diversification of taxa at the molecular level, despite clear separation based on climatic niches. The 'Mediterranean diploid' is hypothesized to be a possible relic of the most recent common ancestor of Anthoxanthum due to their sharing of ancestral features.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10611 - Plant sciences, botany

Projekt

<a href="/cs/project/GBP501%2F12%2FG090" target="_blank" >GBP501/12/G090: Evoluce a funkce komplexních genomů rostlin</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Annals of Botany

ISSN

0305-7364

e-ISSN

—

Svazek periodika

120

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

18

Strana od-do

285-302

Kód UT WoS článku

000407118500009

EID výsledku v databázi Scopus

2-s2.0-85026477131