Detailed Information on Publication Record
2023
Complex patterns of ploidy in a holocentric plant clade (Schoenus, Cyperaceae) in the Cape biodiversity hotspot
ELLIOTT, Tammy L, A. Muthama MUASYA and Petr BUREŠBasic information
Original name
Complex patterns of ploidy in a holocentric plant clade (Schoenus, Cyperaceae) in the Cape biodiversity hotspot
Authors
ELLIOTT, Tammy L (124 Canada, guarantor, belonging to the institution), A. Muthama MUASYA and Petr BUREŠ (203 Czech Republic, belonging to the institution)
Edition
Annals of Botany, Oxford, Oxford University Press, 2023, 0305-7364
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10611 Plant sciences, botany
Country of publisher
United Kingdom of Great Britain and Northern Ireland
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
Impact factor
Impact factor: 4.200 in 2022
RIV identification code
RIV/00216224:14310/23:00130323
Organization unit
Faculty of Science
UT WoS
000787797200001
Keywords in English
Aneuploidy; Cape Floristic Region; chromosome fission; chromosome fusion; climate; Cyperaceae; genome size; holocentric chromosomes; polyploidy; Schoeneae; Schoenus; soil chemistry
Tags
Tags
International impact, Reviewed
Změněno: 6/3/2024 10:39, Mgr. Marie Šípková, DiS.
Abstract
V originále
Background and Aims It is unclear how widespread polyploidy is throughout the largest holocentric plant family - the Cyperaceae. Because of the prevalence of chromosomal fusions and fissions, which affect chromosome number but not genome size, it can be impossible to distinguish if individual plants are polyploids in holocentric lineages based on chromosome count data alone. Furthermore, it is unclear how differences in genome size and ploidy levels relate to environmental correlates within holocentric lineages, such as the Cyperaceae. Methods We focus our analyses on tribe Schoeneae, and more specifically the southern African clade of Schoenus. We examine broad-scale patterns of genome size evolution in tribe Schoeneae and focus more intensely on determining the prevalence of polyploidy across the southern African Schoenus by inferring ploidy level with the program ChromEvol, as well as interpreting chromosome number and genome size data. We further investigate whether there are relationships between genome size/ploidy level and environmental variables across the nutrient-poor and summer-arid Cape biodiversity hotspot. Key Results Our results show a large increase in genome size, but not chromosome number, within Schoenus compared to other species in tribe Schoeneae. Across Schoenus, there is a positive relationship between chromosome number and genome size, and our results suggest that polyploidy is a relatively common process throughout the southern African Schoenus. At the regional scale of the Cape, we show that polyploids are more often associated with drier locations that have more variation in precipitation between dry and wet months, but these results are sensitive to the classification of ploidy level. Conclusions Polyploidy is relatively common in the southern African Schoenus, where a positive relationship is observed between chromosome number and genome size. Thus, there may be a high incidence of polyploidy in holocentric plants, whose cell division properties differ from monocentrics.
Links
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