Intragenomic rDNA variation-the product of concerted evolution, mutation, or something in between?

W Wang, X Zhang, S Garcia, AR Leitch, A Kovařík - Heredity, 2023 - nature.com
The classical model of concerted evolution states that hundreds to thousands of ribosomal
DNA (rDNA) units undergo homogenization, making the multiple copies of the individual …

The nuclear 35S rDNA world in plant systematics and evolution: a primer of cautions and common misconceptions in cytogenetic studies

JA Rosselló, AJ Maravilla, M Rosato - Frontiers in Plant Science, 2022 - frontiersin.org
The ubiquitous presence of rRNA genes in nuclear, plastid, and mitochondrial genomes has
provided an opportunity to use genomic markers to infer patterns of molecular and …

Uneven Levels of 5S and 45S rDNA Site Number and Loci Variations across Wild Chrysanthemum Accessions

J He, Y Zhao, S Zhang, Y He, J Jiang, S Chen, W Fang… - Genes, 2022 - mdpi.com
Ribosomal DNA (rDNA) is an excellent cytogenetic marker owing to its tandem arrangement
and high copy numbers. However, comparative studies have focused more on the number of …

Multispecies polyploidization, chromosome shuffling, and genome extraction in Zea/Tripsacum hybrids

MZ Iqbal, X Wen, L Xu, Y Zhao, J Li, W Jiang… - Genetics, 2023 - academic.oup.com
By hybridization and special sexual reproduction, we sequentially aggregated Zea mays,
Zea perennis, and Tripsacum dactyloides in an allohexaploid, backcrossed it with maize …

Contrasting patterns of 5S rDNA repeats in European and Asian ecotypes of greater duckweed, Spirodela polyrhiza (Lemnaceae)

G Chen, A Stepanenko, N Borisjuk - Frontiers in Plant Science, 2024 - frontiersin.org
Ribosomal DNA (rDNA) contains highly conserved, specifically organized sequences
encoding ribosomal RNAs (rRNAs) separated by variable non-transcribed intergenic …

The Taraxacum sect. Erythrosperma (Asteraceae, Cichorioideae) in Slovakia IV. Distribution of T. erythrospermum and synonymisation of T. slovacum

M DUDÁŠ, V KOLARČIK, R ŠUVADA… - Phytotaxa, 2024 - phytotaxa.mapress.com
The group of lesser dandelions (Taraxacum sect. Erythrosperma) is represented by more
than 215 species growing in mostly xerothermic habitats throughout Europe. The only …

Investigating the Origin and Evolution of Polyploid Trifolium medium L. Karyotype by Comparative Cytogenomic Methods

E Lukjanová, A Hanulíková, J Řepková - Plants, 2023 - mdpi.com
Trifolium medium L. is a wild polyploid relative of the agriculturally important red clover that
possesses traits promising for breeding purposes. To date, T. medium also remains the only …

Mediterranean plant karyological data

G Kamari, C Blanché, S Siljak-Yakovlev, A Ghukasyan… - 2023 - digital.csic.es
For the first time, the chromosome number was determined for 5 species of the genus Pyrus
L.(Rosaceae) from Armenia, viz. P. daralaghezii, P. hyrcana var. yeghegisi, P. medvedevii …

Evaluation of intragenomic polymorphism of ribosomal DNA ITS1 region in Taraxacum (Asteraceae: Crepidinae) by targeted NGS sequencing

ПГ Ефимов, ВВ Домашкина, ЭМ Мачс… - …, 2024 - turczaninowia.asu.ru
The picture of intragenomic polymorphism of ITS1 region of rDNA repeats revealed by
targeted highthroughput sequencing is a modern and simple method useful for phylogenetic …

Mediterranean plant karyological data–33/4 Contribution to the karyological knowledge of some representatives of the family Asteraceae in the Pyrenean flora.

T Garnatje, I Pérez-Lorenzo, J Vallès… - Flora …, 2023 - search.ebscohost.com
Mediterranean plant karyological data – 33/4 Contribution to the karyological knowledge of some
representatives of the family Page 1 Mediterranean plant karyological data – 33/4 Contribution …