Diploid and tetraploid cytotypes of the flagship Cape species Dicerothamnus rhinocerotis (Asteraceae): variation in distribution, ecological niche, morphology and genetics
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F24%3A00597607" target="_blank" >RIV/67985939:_____/24:00597607 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11310/24:10497347
Result on the web
<a href="https://doi.org/10.1093/aob/mcad084" target="_blank" >https://doi.org/10.1093/aob/mcad084</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/aob/mcad084" target="_blank" >10.1093/aob/mcad084</a>
Alternative languages
Result language
angličtina
Original language name
Diploid and tetraploid cytotypes of the flagship Cape species Dicerothamnus rhinocerotis (Asteraceae): variation in distribution, ecological niche, morphology and genetics
Original language description
The survey of 171 populations and 2370 individuals showed that the species comprises diploid and tetraploid cytotypes, no intermediates and only 16.8 % of mixed populations. Mean 2C-values are 1.80-2.06 pg for diploids and 3.48-3.80 pg for tetraploids, with very similar monoploid genome sizes. Intra-cytotype variation showed a significant positive correlation with altitude and longitude in both cytotypes and with latitude in diploids. Although niches of both cytotypes are highly equivalent and similar, their optima and breadth are shifted due to differences mainly in isothermality and available water capacity. Morphometric analyses showed significant differences in the leaves and corolla traits, in the number of florets per capitulum, and cypsela dimensions between the two cytotypes. Genetic analyses revealed four groups, three of them including both cytotypes. Dicerothamnus rhinocerotis includes two distinct cytotypes that are genetically similar. While tetraploids arise several times independently within different genetic groups, morphological and ecological differences are evident between cytotypes. Our results open up new avenues for questions regarding the importance of ploidy in the megadiverse Cape flora, and exemplify the need for population-based studies focused on ploidy variation.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10611 - Plant sciences, botany
Result continuities
Project
<a href="/en/project/EF16_027%2F0007852" target="_blank" >EF16_027/0007852: MOBILITY 2017</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Annals of Botany
ISSN
0305-7364
e-ISSN
1095-8290
Volume of the periodical
133
Issue of the periodical within the volume
5-6
Country of publishing house
US - UNITED STATES
Number of pages
20
Pages from-to
851-870
UT code for WoS article
001050660500001
EID of the result in the Scopus database
2-s2.0-85188508045