Insights into the cytotype and reproductive puzzle of Cotoneaster integerrimus in the Western Carpathians

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F20%3A10422636" target="_blank" >RIV/00216208:11310/20:10422636 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=0ozRPFPGnt" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=0ozRPFPGnt</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00606-020-01684-6" target="_blank" >10.1007/s00606-020-01684-6</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Insights into the cytotype and reproductive puzzle of Cotoneaster integerrimus in the Western Carpathians

Popis výsledku v původním jazyce

The Western Carpathians are traditionally recognized as one of the hotspots of temperate European biodiversity. The polyploid and apomictic group of Cotoneaster integerrimus s.l. is supposed to be particularly variable there, and this is also mirrored by taxonomy. We therefore examined the ploidal and reproductive pattern of C. integerrimus s.l. and its close relative Cotoneaster tomentosus in the Western Carpathians and compared it to that in the Bohemian Massif. Using flow cytometry, we detected tetraploid (468 individuals, 100 populations) and pentaploid (35 individuals, 11 populations) cytotypes, and eight additional mixed populations. The pentaploid cytotype was found exclusively in C. tomentosus, which only occurs in the Western Carpathians. A further flow cytometric seed screen (1114 seeds) revealed facultative apomixis (10.1% of sexual progeny) of tetraploid C. integerrimus s.l., whereas the pentaploid C. tomentosus was almost obligately apomictic. In addition, 3.8% of sexual progeny was formed with the contribution of an unreduced female gamete. Moreover, apomixis in tetraploids was further structured into distinct subtypes: pseudogamy (77.2%), autonomous apomixis (3.7%) and haploid parthenogenesis (0.3%). There were no significant differences in the proportions of sexual and asexual seeds between both species and geographic regions. Our comparative dataset from the Western Alps also included sexual diploids. For this reason, greater ploidal and reproductive variation may be expected in that region. The Western Carpathians therefore do not represent a centre of cytotype and reproductive variation of C. integerrimus s.l., and facultative apomixis is a reproductive strategy that predominates in both the Western Carpathians and the Bohemian Massif.

Název v anglickém jazyce

Insights into the cytotype and reproductive puzzle of Cotoneaster integerrimus in the Western Carpathians

Popis výsledku anglicky

The Western Carpathians are traditionally recognized as one of the hotspots of temperate European biodiversity. The polyploid and apomictic group of Cotoneaster integerrimus s.l. is supposed to be particularly variable there, and this is also mirrored by taxonomy. We therefore examined the ploidal and reproductive pattern of C. integerrimus s.l. and its close relative Cotoneaster tomentosus in the Western Carpathians and compared it to that in the Bohemian Massif. Using flow cytometry, we detected tetraploid (468 individuals, 100 populations) and pentaploid (35 individuals, 11 populations) cytotypes, and eight additional mixed populations. The pentaploid cytotype was found exclusively in C. tomentosus, which only occurs in the Western Carpathians. A further flow cytometric seed screen (1114 seeds) revealed facultative apomixis (10.1% of sexual progeny) of tetraploid C. integerrimus s.l., whereas the pentaploid C. tomentosus was almost obligately apomictic. In addition, 3.8% of sexual progeny was formed with the contribution of an unreduced female gamete. Moreover, apomixis in tetraploids was further structured into distinct subtypes: pseudogamy (77.2%), autonomous apomixis (3.7%) and haploid parthenogenesis (0.3%). There were no significant differences in the proportions of sexual and asexual seeds between both species and geographic regions. Our comparative dataset from the Western Alps also included sexual diploids. For this reason, greater ploidal and reproductive variation may be expected in that region. The Western Carpathians therefore do not represent a centre of cytotype and reproductive variation of C. integerrimus s.l., and facultative apomixis is a reproductive strategy that predominates in both the Western Carpathians and the Bohemian Massif.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10611 - Plant sciences, botany

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název periodika

Plant Systematics and Evolution

ISSN

0378-2697

e-ISSN

—

Svazek periodika

306

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

AT - Rakouská republika

Počet stran výsledku

14

Strana od-do

58

Kód UT WoS článku

000532154800001

EID výsledku v databázi Scopus

2-s2.0-85084500724