Results 41 to 50 of about 1,418 (178)

New cytogenetic data for three species of Pentatomidae (Heteroptera): Dichelops melacanthus (Dallas, 1851), Loxa viridis (Palisot de Beauvois, 1805), and Edessa collaris (Dallas, 1851) [PDF]

Comparative Cytogenetics, 2020
In this paper, we present new cytogenetic data for three species of the family Pentatomidae: Dichelops melacanthus (Dallas, 1851), Loxa viridis (Palisot de Beauvois, 1805), and Edessa collaris (Dallas, 1851).
Jaqueline Fernanda Dionísio, Joana Neres da Cruz Baldissera, Angélica Nunes Tiepo, José Antônio Marin Fernandes, Daniel Ricardo Sosa-Gómez, Renata da Rosa   +5 more
doaj   +3 more sources

Evolution of satDNAs on holocentric chromosomes: insights from hemipteran insects of the genus Mahanarva

, 2023
Satellite DNAs (satDNAs) constitute one of the main components of eukaryote genomes and are involved in chromosomal organization and diversification. Although largely studied, little information was gathered about their evolution on holocentric species ...
Paladini, Andressa, Anjos, Allison [UNESP], Cabral-de-Mello, Diogo C. [UNESP], Bardella, Vanessa B. [UNESP], Milani, Diogo [UNESP]   +4 more
core   +1 more source

Cytotaxonomic studies in the Iberian species of the genus Cuscuta (Convolvulaceae)

Anales del Jardín Botánico de Madrid, 2002
Cuscuta is a genus of parasitic plants with great diversity in size, number and type of chromosomes. All the species included in Cuscuta subgenus Cuscuta are characterized by the holocentric chromosomes whereas they are monocentric in the species of ...
Miguel Ángel García, Santiago Castroviejo   +1 more
doaj   +1 more source

Comportamento mitótico e meiótico de cromossomos holocêntricos &gama; irradiados de Rhynchospora pubera (Cyperaceae)

Acta Scientiarum: Biological Sciences, 2008
Para avaliar a ocorrência de cinetócoros difusos em Rhynchospora (Cyperaceae), cromossomos de R. pubera foram fragmentados ou fundidos por irradiação &gama;.
André Luís Laforga Vanzela, Waldeciro Colaço   +1 more
doaj   +1 more source

Karyotype diversity and chromosomal organization of repetitive DNA in Tityus obscurus (Scorpiones, Buthidae)

BMC Genetics, 2017
Background Holocentric chromosomes occur in approximately 750 species of eukaryotes. Among them, the genus Tityus (Scorpiones, Buthidae) has a labile karyotype that shows complex multivalent associations during male meiosis. Thus, taking advantage of the
Bruno Rafael Ribeiro de Almeida, Susana Suely Rodrigues Milhomem-Paixão, Renata Coelho Rodrigues Noronha, Cleusa Yoshiko Nagamachi, Marlyson Jeremias Rodrigues da Costa, Pedro Pereira de Oliveira Pardal, Johne Souza Coelho, Julio Cesar Pieczarka   +7 more
doaj   +1 more source

Mitotic microtubule development and histone H3 phosphorylation in the holocentric chromosomes of Rhynchospora tenuis (Cyperaceae)

, 2006
In the present work we report the phosphorylation pattern of histone H3 and the development of microtubular structures using immunostaining techniques, in mitosis of Rhynchospora tenuis (2n = 4), a Cyperaceae with holocentric chromosomes.
Guerra, Marcelo, Brasileiro-Vidal, Ana Christina, Arana Montes, María Del Pilar De, Puertas Gallego, María Jesús   +3 more
core   +1 more source

Russian wheat aphid: a model for genomic plasticity and a challenge to breeders

Insect Science, EarlyView.
Invasive foundress finds suitable habitat and reproduces through pathogenesis. Wingless females produce life offspring quickly, which leads to high population densities. High population densities result in competition, which may induce epigenetic changes and wing development for dispersal.
Astrid Jankielsohn, Vicky L. Tolmay, Marlon‐Schylor Luke le Roux, Lintle Mohase, Mpho S. Mafa, Vittorio F. Nicolis, Eduard Venter, Nicolaas Francois Visser Burger, Anna‐Maria Botha   +8 more
wiley   +1 more source

siRNA-Mediated BmAurora B Depletion Impedes the Formation of Holocentric Square Spindles in Silkworm Metaphase BmN4 Cells

Insects
Silkworm ovary-derived BmN4 cells rely on chromatin-induced spindle assembly to form microtubule-based square mitotic spindles that ensure accurate segregation of holocentric chromosomes during cell division.
Bing Zhang, Camilo Ayra-Pardo, Xiaoning Liu, Meiting Song, Dandan Li, Yunchao Kan   +5 more
doaj   +1 more source

Genome assembly of Elcysma westwoodi provides insights into host‐plant cyanogenic glucoside detoxification and chemical defence gene evolution

Insect Molecular Biology, EarlyView.
A chromosome‐level genome of Elcysma westwoodi was assembled. The genome encodes 272 detoxification‐related genes. A single‐copy bCAS was retained for cyanide detoxification. CYP405A and CYP332A were recruited into cyanogenic defence evolution. UGT33A retained a conserved GT‐B fold and catalytic domains.
Minyoung Choi, Murtaza Khan, Juil Kim
wiley   +1 more source

Evolutionary dynamics of rDNA clusters in arthropods with holocentric chromosomes [PDF]

, 2020
Nowadays, rDNA clusters displayed by fluorescence in situ hybridization (FISH) are one of the standard cytogenetic markers used to identify chromosome homology, allowing the determination of mechanisms and possible rate of rearrangements during ...
Tymich, Alexandr
core