Scopus
🔓 Açık Erişim YÖKSİS Eşleşti
A comparative karyological study of Helianthemum (Cistaceae): karyotype size, karyotype symmetry and evolution of chromosome number
Gladius · Haziran 2023
YÖKSİS Kayıtları
A comparative karyological study of Helianthemum (Cistaceae): karyotype size, karyotype symmetry and evolution of chromosome number
Anales del Jardín Botánico de Madrid · 2023 SCI-Expanded
PROFESÖR DENİZ ULUKUŞ →
Makale Bilgileri
DergiGladius
Yayın TarihiHaziran 2023
Cilt / Sayfa80
Scopus ID2-s2.0-85165955757
Erişim🔓 Açık Erişim
Özet
In this study we assessed karyotype size and symmetry for a comprehensive taxonomic and geographic representation of Helianthemum and reconstructed chromosome number evolution in the genus. Using root tips, we photographed mitotic metaphase spreads to obtain chromosome number, total haploid (monoploid) length of the chromosome set (THL), karyotype formula, Stebbins’ classification of karyotype asymmetry, interchromosomal coefficient of variation of chromosome length (CVCL) and intrachromosomal mean centromeric asymmetry (MCA) using MATO (Measurement and Analysis Tools). We found that shifts in chromosome number are not a major driver in the evolution of Helianthemum, whose chromosome number evolved at a constant rate of single chromosome gain or loss. Karyotype asymmetry is very low and little variable in all taxonomic categories studied, with a predominance of metacentric and submetacentric small to medium-sized chromosomes about 3 μm at the genus level. However, total karyotype length varies from 16.91 μm to 47.84 μm at the species level, with a cytogenetic signature that is not conserved within subgenera and most sections. Overall, H. subg. Plectolobum shows both the longest and the most symmetrical karyotypes. We hypothesize that the variation in karyotype size in Helianthemum is likely a consequence of chromosome rearrangements that have occurred under selective pressures.
Yazarlar (8)
1
Sara Martín-Hernanz
ORCID: 0000-0001-9881-9919
2
Rafael G. Albaladejo
ORCID: 0000-0002-0919-3545
3
Encarnación Rubio
ORCID: 0000-0003-0957-8581
4
Polina Volkova
ORCID: 0000-0002-3534-5792
5
Mohamed Djamel Miara
ORCID: 0000-0002-7610-5277
6
Deni̇Z Ulukuş
7
Mehmet Sezgin
ORCID: 0000-0001-7122-4421
8
Abelardo Aparicio
ORCID: 0000-0001-7053-0371
Anahtar Kelimeler
ChromEvol
comparative cytogenetics
karyotype
plant cytotaxonomy
Kurumlar
Çankiri Karatekin Üniversitesi
Cankiri Turkey
Papanin Institute for Biology of Inland Waters Russian Academy of Sciences
Nekouzsky Russian Federation
Royal Botanic Gardens, Kew
Richmond United Kingdom
Selçuk Üniversitesi
Selçuklu Turkey
Universidad de Sevilla
Sevilla Spain
Université Ibn-Khaldoun Tiaret
Tiaret Algeria