Results 21 to 30 of about 9,083 (166)

Comparative Chromosomal Localization of 45S and 5S rDNA Sites in 76 Purple-Fleshed Sweet Potato Cultivars [PDF]

Plants, 2020
In recent years, the purple-fleshed sweet potato has attracted more attention because of its high nutritional value. The cytogenetics of this crop is relatively unexplored, limiting our knowledge on its genetic diversity.
Dan Su, Lei Chen, Jianying Sun, Luyue Zhang, Runfei Gao, Qiang Li, Yonghua Han, Zongyun Li   +7 more
doaj   +2 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

Expression of 5S rDNA in the oocytes of water frogs [PDF]

BMC Research Notes, 2009
Background We report the expression pattern of 5S rDNA in the eggs of water frogs Rana lessonae, Rana ridibunda and Rana esculenta using the quantitative real-time PCR. This kind of research had never been performed before.
Plewa Robert, Czarniewska Elżbieta
doaj   +3 more sources

Genome sequence assembly of the 5S rDNA loci informs haplotype specificity and evolution in the greater duckweed Spirodela polyrhiza [PDF]

Communications Biology
Despite the rapid expansion of information on eukaryotic genomes, data on ribosomal DNA (rDNA) loci encoding ribosomal RNAs, crucial for the biogenesis of ribosomes, are absent in almost all cases due to difficulties in assembling the long regions of ...
Anton Stepanenko, Veit Schubert, Guimin Chen, Olena Kishchenko, Todd P. Michael, Eric Lam, Maria Hrmova, Ingo Schubert, Nikolai Borisjuk   +8 more
doaj   +2 more sources

Could Horizontal Gene Transfer Explain 5S rDNA Similarities Between Frogs and Worm Parasites? [PDF]

Biomolecules
Horizontal gene transfer (HGT), the non-Mendelian transfer of genetic material between organisms, is relatively frequent in prokaryotes, whereas its extent among eukaryotes remains unclear.
Kaleb Pretto Gatto, Cintia Pelegrineti Targueta, Stenio Eder Vittorazzi, Luciana Bolsoni Lourenço   +3 more
doaj   +2 more sources

Cytogenetic Analysis of Altitude‐Associated Chromosome Variations in Campeiostachys nutans From Western Sichuan Plateau Using Multicolor GISH and ND‐FISH Approaches [PDF]

Ecology and Evolution, Volume 16, Issue 7, July 2026.
The genomic and chromosomal organization of C. nutans was investigated using GISH and ND‐FISH with four oligonucleotide probes. The results showed that repetitive sequence distribution exhibited genome‐specific patterns: the H genome demonstrated high structural stability with low polymorphism, while the St genome showed moderate variation, and the Y ...
Cairong Yang, Jiezhi Yang, Yi Ou, Yueju Zhou, Zhimeng Wang, Weiliang Qi, Dingfang Luo, Yutong Qiao   +7 more
wiley   +2 more sources

Higher-order organisation of extremely amplified, potentially functional and massively methylated 5S rDNA in European pikes (Esox sp.) [PDF]

BMC Genomics, 2017
Background Pikes represent an important genus (Esox) harbouring a pre-duplication karyotype (2n = 2x = 50) of economically important salmonid pseudopolyploids.
Radka Symonová, Konrad Ocalewicz, Lech Kirtiklis, Giovanni Battista Delmastro, Šárka Pelikánová, Sonia Garcia, Aleš Kovařík   +6 more
doaj   +2 more sources

Nucleolar dominance arises in Spartina homoploid hybrids and persists after allopolyploidization [PDF]

The Plant Journal, Volume 125, Issue 5, March 2026.
Significance Statement Evolution of nucleolar dominance in Spartina anglica since its origin c. 150 years ago. mC, cytosine methylation; NOR, nucleolar organizer regions. rDNA resides within the NORs. Spartina anglica C.E. Hubbard presents an iconic allopolyploid species that formed only 150 years ago, spreading worldwide since then.
Alena Kuderová, Dalibor Húska, Julie Ferreira de Carvalho, Roman Matyášek, Ilia J. Leitch, Armel Salmon, Andrew R. Leitch, Malika Ainouche, Aleš Kovařík   +8 more
wiley   +2 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

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