Detailed Information on Publication Record
2023
Hybridization may endanger the rare North Apennine endemic Cirsium bertolonii
MICHÁLKOVÁ, Ester, Jakub ŠMERDA, Klára PLAČKOVÁ, Aleš KNOLL, Petr BUREŠ et. al.Basic information
Original name
Hybridization may endanger the rare North Apennine endemic Cirsium bertolonii
Authors
MICHÁLKOVÁ, Ester (203 Czech Republic, belonging to the institution), Jakub ŠMERDA (203 Czech Republic, belonging to the institution), Klára PLAČKOVÁ (203 Czech Republic, belonging to the institution), Aleš KNOLL (203 Czech Republic) and Petr BUREŠ (203 Czech Republic, guarantor, belonging to the institution)
Edition
Plant Systematics and Evolution, Springer, 2023, 0378-2697
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10611 Plant sciences, botany
Country of publisher
Austria
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
Impact factor
Impact factor: 1.900 in 2022
RIV identification code
RIV/00216224:14310/23:00130984
Organization unit
Faculty of Science
UT WoS
000994303600001
Keywords in English
Asteraceae; Flow cytometry; Genome size; Genomic GC content; Gynodioecy; Homoploid hybridization
Tags
Tags
International impact, Reviewed
Změněno: 6/1/2024 00:20, prof. RNDr. Petr Bureš, Ph.D.
Abstract
V originále
We examined populations of North Apennine stenoendemics Cirsium bertolonii in the Apuan Alps and Tuscan-Emilian Apennines and found individuals morphologically shifted to co-occurring C. acaulon or C. erisithales. Hybrid status of these intermediates was confirmed by flow cytometry, morphometrics and amplified fragment length polymorphism (AFLP). We interpreted these hybrids taxonomically as Cirsium xsagrense (C. acaulon x C. bertolonii) and C. xabetonense (C. bertolonii x C. erisithales). Estimated genome size (2C) was 2244 +/- 31 Mbp for C. xsagrense and 2152 +/- 99 Mbp for C. xabetonense. Their genomic GC content was 38.95 +/- 0.35% and 38.77 +/- 0.26%, respectively. Diploid chromosome number 2n = 34 was counted for C. bertolonii, and the previously reported 2n = 12 needs to be considered erroneous. We found C. bertolonii to be a gynodioecious species (like many other Cirsium species) that is not reproductively isolated by ploidy level or chromosome number from co-occurring congeners. The relatively frequent occurrence of C. xsagrense in Monte Sagro (locus classicus of C. bertolonii) and the prevalence of C. xabetonense in Alpe Tre Potenze suggest that hybridization occurs repeatedly in C. bertolonii, as also confirmed by older herbarium specimens. C. xabetonense produces ripe achenes and F2 hybrids or backcrosses, as some other Cirsium hybrids do. Genetic erosion/swamping via interspecific hybridization can therefore pose a risk to the genetic integrity of C. bertolonii, as it does for some other narrowly endemic high-mountain Cirsium species in Europe.
Links
GA20-15989S, research and development project |
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MUNI/A/1334/2018, interní kód MU |
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