Results 21 to 30 of about 42,079 (286)

Characterization of meiotic chromosome behavior in the autopolyploid Saccharum spontaneum reveals preferential chromosome pairing without distinct DNA sequence variation

Crop Journal, 2023
Autopolyploidy and allopolyploidy may represent an evolutionary advantage and are more common in plants than assumed. However, less attention has been paid to autopolyploidy than to allopolyploidy, and its evolutionary consequences are largely unclear ...
Xin Zhang, Zhuang Meng, Jinlei Han, Haris Khurshid, Ayman Esh, Robert Hasterok, Kai Wang   +6 more
doaj   +1 more source

Chromosome movements promoted by the mitochondrial protein SPD-3 are required for homology search during Caenorhabditis elegans meiosis.

PLoS Genetics, 2013
Pairing of homologous chromosomes during early meiosis is essential to prevent the formation of aneuploid gametes. Chromosome pairing includes a step of homology search followed by the stabilization of homolog interactions by the synaptonemal complex (SC)
Leticia Labrador, Consuelo Barroso, James Lightfoot, Thomas Müller-Reichert, Stephane Flibotte, Jon Taylor, Donald G Moerman, Anne M Villeneuve, Enrique Martinez-Perez   +8 more
doaj   +1 more source

Competition of Parental Genomes in Plant Hybrids

Frontiers in Plant Science, 2020
Interspecific hybridization represents one of the main mechanisms of plant speciation. Merging of two genomes from different subspecies, species, or even genera is frequently accompanied by whole-genome duplication (WGD).
Marek Glombik, Václav Bačovský, Roman Hobza, Roman Hobza, David Kopecký   +4 more
doaj   +1 more source

CYTOGENETICS OF CHROMOSOME PAIRING IN WHEAT [PDF]

Genetics, 1974
ABSTRACT Meiotic chromosome pairing in Triticum aestivum is controlled by genetic systems promoting and reducing pairing. The pairing of homoeologous chromosomes is prevented principally by the activity of a single locus (Ph) distally located on the long arm of chromosome 5B.
openaire   +2 more sources

MNM and SNM maintain but do not establish achiasmate homolog conjunction during Drosophila male meiosis.

PLoS Genetics, 2019
The first meiotic division reduces genome ploidy. This requires pairing of homologous chromosomes into bivalents that can be bi-oriented within the spindle during prometaphase I.
Michael Shoujie Sun, Joe Weber, Ariane C Blattner, Soumya Chaurasia, Christian F Lehner   +4 more
doaj   +1 more source

Identification of 5P Chromosomes in Wheat-Agropyron cristatum Addition Line and Analysis of Its Effect on Homologous Pairing of Wheat Chromosomes

Frontiers in Plant Science, 2022
As an important wheat wild relative, the P genome of Agropyron cristatum (L.) Gaertn. (2n = 4x = 28) is very valuable for wheat improvement. A complete set of wheat-A.
Cuili Pan, Cuili Pan, Qingfeng Li, Qingfeng Li, Haiming Han, Jinpeng Zhang, Shenghui Zhou, Xinming Yang, Xiuquan Li, Lihui Li, Weihua Liu   +10 more
doaj   +1 more source

Cryptic homoeology analysis in species and hybrids of genus Zea

Biologia Plantarum, 2013
Cryptic intergenomic pairing of genus Zea was induced by the use of a diluted colchicine solution in order to elucidate the phylogenetic relations and differentiation of the homoeologous genomes. Results indicate that in species and hybrids with 2n = 20,
M. C. del Molina, C. G. López, S. Staltari, S. E. Chorzempa, V. Moreno Ferrero   +4 more
doaj   +1 more source

Meiotic Nuclear Oscillations Are Necessary to Avoid Excessive Chromosome Associations

Cell Reports, 2016
Pairing of homologous chromosomes is a crucial step in meiosis, which in fission yeast depends on nuclear oscillations. However, how nuclear oscillations help pairing is unknown.
Mariola R. Chacón, Petrina Delivani, Iva M. Tolić   +2 more
doaj   +1 more source

Chromosome 5P of Agropyron cristatum induces chromosomal translocation by disturbing homologous chromosome pairing in a common wheat background

Crop Journal, 2023
Wide hybridization is a strategy for broadening the genetic basis of wheat. Because an efficient method for inducing wheat–alien chromosome translocations will allow producing useful germplasm, it is desirable to discover new genes that induce ...
Haiming Han, Xinyuan Ma, Zhen Wang, Kai Qi, Wenjing Yang, Weihua Liu, Jinpeng Zhang, Shenghui Zhou, Yuqing Lu, Xinming Yang, Xiuquan Li, Lihui Li   +11 more
doaj   +1 more source

Plasmodium falciparum gametogenesis essential protein 1 (GEP1) is a transmission‐blocking target

FEBS Letters, EarlyView.
This study shows Plasmodium falciparum GEP1 is vital for activating sexual stages of malarial parasites even independently of a mosquito factor. Knockout parasites completely fail gamete formation even when a phosphodiesterase inhibitor is added. Two single‐nucleotide polymorphisms (V241L and S263P) are found in 12%–20% of field samples.
Frederik Huppertz, Milagros Siebeck Caturelli, Lina S. Lehmann, Florian Kurth, Alexander G. Maier, Kai Matuschewski   +5 more
wiley   +1 more source