Results 21 to 30 of about 96,602 (197)

Genome architecture modulates 35S and 5S rDNA homogenization in Asteraceae. [PDF]

Plant J
SUMMARY Concerted evolution is the model by which multicopy gene families are homogenized across genomes, with ribosomal DNA (rDNA) as its textbook example. However, the extent and efficiency of this process may vary depending on genomic factors. The plant family Asteraceae provides a natural comparative system to address the evolutionary dynamics of ...
Vitales D, Pascual-Díaz JP, Zoulová V, Kovarik A, Garcia S.   +4 more
europepmc   +2 more sources

Research on 5S rDNA, Mitochondria and Nutritional Components of <i>Cambaroides dauricus</i>. [PDF]

Biology (Basel)
The mitochondrial genome and 5S rDNA are powerful tools for exploring and confirming species identity and understanding evolutionary trajectories. In addition, evaluating the nutritional value of Cambaroides dauricus by determining and analyzing the nutritional components of its muscles could provide essential data for relevant artificial breeding and ...
Liu H, Dong X, Wang Y, Luo S.
europepmc   +4 more sources

Physical mapping of the 5S and 45S rDNA in teosintes [PDF]

Hereditas, 2002
The physical locations of the 5S and 45S rDNA sequences were examined in three types of teosinte, Zea mays ssp. mexicana (2n = 20), Zea diploperennis (2n = 20) and Zea perennis (2n = 40) by biotinylated fluorescence in situ hybridization (FISH). The tested materials only showed one hybridization site of 5S rDNA on their genomes, but they were different
Y H, Han, L J, Li, Y C, Song, Z Y, Li, Z Y, Xiong, D Y, Li   +5 more
openaire   +2 more sources

Molecular Cytogenetics of Eurasian Species of the Genus Hedysarum L. (Fabaceae)

Plants, 2021
The systematic knowledge on the genus Hedysarum L. (Fabaceae: Hedysareae) is still incomplete. The species from the section Hedysarum are valuable forage and medicinal resources. For eight Hedysarum species, we constructed the integrated schematic map of
Olga Yu. Yurkevich, Tatiana E. Samatadze, Inessa Yu. Selyutina, Svetlana I. Romashkina, Svyatoslav A. Zoshchuk, Alexandra V. Amosova, Olga V. Muravenko   +6 more
doaj   +1 more source

Dynamic evolution and hierarchical regulation of rDNA in polyploid oat. [PDF]

Plant J
SUMMARY Ribosomal DNA (rDNA) encodes the RNA core of ribosomes, yet it remains one of the least understood components of eukaryotic genomes, particularly in complex polyploids. Here, we present a comprehensive analysis of rDNA organization, evolution, and transcription across the Avena genus. We show that rDNA copy number varies extensively across loci
Wan Z, Wang H, Qin J, Ding W, Wang X, Ge Q, Su H.   +6 more
europepmc   +2 more sources

The Ribosomal DNA Loci of the Ancient Monocot Pistia stratiotes L. (Araceae) Contain Different Variants of the 35S and 5S Ribosomal RNA Gene Units

Frontiers in Plant Science, 2022
The freshwater plant water lettuce (Pistia stratiotes L.) grows in warm climatic zones and is used for phytoremediation and biomass production. P. stratiotes belongs to the Araceae, an ecologically and structurally diverse early monocot family, but the ...
Anton Stepanenko, Guimin Chen, Phuong T. N. Hoang, Phuong T. N. Hoang, Jörg Fuchs, Ingo Schubert, Nikolai Borisjuk   +6 more
doaj   +1 more source

Evolutionary dynamics of 18S and 5S rDNA in autotriploid Carassius auratus [PDF]

Gene, 2020
The Carassius auratus (crucian carp) complex of the Dongting water system exhibits coexistence of diploid and triploid forms. As reported, triploid C. auratus is autotriploid origin. Ribosomal DNA (rDNA) with evolutionary conservation is widely used to study polyploidization.
Liu, Cao, Chun, Zhao, Chongqing, Wang, Huan, Qin, Qinbo, Qin, Min, Tao, Chun, Zhang, Rurong, Zhao, Shaojun, Liu   +8 more
openaire   +3 more sources

Chromosomal mapping of 5S rDNA in two species of the genus Acanthocephalus (Echinorhynchida). [PDF]

Parasitol Res
Abstract Chromosomal mapping of 5S rDNA in two Acanthocephala species was performed for the first time using fluorescence in situ hybridization (FISH) with a 5S rDNA probe. The 5S rDNA PCR products from the genomes of both species were sequenced and aligned and an identical 141 bp long coding region was determined.
Orosová M, Marková A.
europepmc   +3 more sources

Molecular organization of the 5S rDNA gene type II in elasmobranchs. [PDF]

RNA Biol, 2016
The 5S rDNA gene is a non-coding RNA that can be found in 2 copies (type I and type II) in bony and cartilaginous fish. Previous studies have pointed out that type II gene is a paralog derived from type I. We analyzed the molecular organization of 5S rDNA type II in elasmobranchs. Although the structure of the 5S rDNA is supposed to be highly conserved,
Castro SI, Hleap JS, Cárdenas H, Blouin C.   +3 more
europepmc   +4 more sources

Organization and variation analysis of 5S rDNA in different ploidy-level hybrids of red crucian carp × topmouth culter. [PDF]

PLoS ONE, 2012
Through distant crossing, diploid, triploid and tetraploid hybrids of red crucian carp (Carassius auratus red var., RCC♀, Cyprininae, 2n = 100) × topmouth culter (Erythroculter ilishaeformis Bleeker, TC♂, Cultrinae, 2n = 48) were successfully produced ...
Weiguo He, Qinbo Qin, Shaojun Liu, Tangluo Li, Jing Wang, Jun Xiao, Lihua Xie, Chun Zhang, Yun Liu   +8 more
doaj   +1 more source