Results 121 to 130 of about 61,553 (233)

Structure and sequence evolution in the pennycress (Thlaspi arvense) pangenome

New Phytologist, Volume 250, Issue 5, Page 2723-2741, June 2026.
Summary Eukaryotic genomes harbor many forms of variation, including nucleotide diversity and structural polymorphisms, which experience natural selection and contribute to genome evolution and biodiversity. Harnessing this variation for agriculture hinges on our ability to detect, quantify, catalog, and deploy genetic diversity. Here, we explore seven
Kevin A. Bird, Joanna L. Rifkin, Chloee M. McLaughlin, Avril M. Harder, Pawan Basnet, Ella Katz, Tomáš Brůna, Kerrie Barry, LoriBeth Boston, Christopher Daum, Jie Guo, Anna Lipzen, Christopher Plott, Jerry W. Jenkins, Rachel Walstead, Shanmugam Rajasekar, Jayson Talag, Katherine Frels, Kathleen Greenham, Shelby Ellison, Jane Grimwood, Jeremy Schmutz, Patrick P. Edger, J. Chris Pires, John T. Lovell, Daniel J. Kliebenstein   +25 more
wiley   +1 more source

Meiotic recombination modulates the structure and dynamics of the synaptonemal complex during C. elegans meiosis.

PLoS Genetics, 2017
During meiotic prophase, a structure called the synaptonemal complex (SC) assembles at the interface between aligned pairs of homologous chromosomes, and crossover recombination events occur between their DNA molecules.
Divya Pattabiraman, Baptiste Roelens, Alexander Woglar, Anne M Villeneuve   +3 more
doaj   +1 more source

Somatic genome‐doubling is the most parsimonious route to allopolyploidy

New Phytologist, Volume 250, Issue 5, Page 2845-2851, June 2026.
Summary The origin of a polyploid can hinge on a single errant cell division, a mistake in the cell cycle that leads to genome‐doubling and re‐writes the rules of chromosome pairing and segregation. In plants, the evolutionary significance of these errors is magnified by lack of an early sequestered germline, meaning somatic mutations can be heritable.
Robin Burns, Alison Dawn Scott, Polina Yu Novikova   +2 more
wiley   +1 more source

ZSL Orchestrates Synaptonemal Complex Assembly as a Central Region Scaffold to Ensure Synapsis Fidelity and Crossover Control in Polyploid Meiosis

Advanced Science, Volume 13, Issue 27, 13 May 2026.
A central molecular adaptor, ZSL, is identified that links transverse filaments ZYP1 to central element SCEP1/2 to drive synaptonemal complex assembly in Brassica napus. Loss of ZSL abolishes synaptonemal complex formation, disrupts meiotic chromosome segregation, and markedly increases crossovers, providing mechanistic insight into meiotic fidelity ...
Miaowei Geng, Shaochen Jia, Fei Cao, Cuiping Liu, Heshuang Zhang, Gang Xu, Jixin Zhuang, Yashi Zhang, Can Liu, Yuhang Zhao, Zilin Guo, Xinjie Yuan, Jiaqing Yang, Lei Chu, Bowei Cai, Hu Zhao, Chao Yang   +16 more
wiley   +1 more source

Optimization of wheat breeding programs using an evolutionary algorithm achieves enhanced genetic gain through strategic resource allocation

Crop Science, Volume 66, Issue 3, May/June 2026.
Abstract Plant breeding is a complex process that involves trade‐offs among competing breeding objectives and limited resources. Despite the necessity for optimization of breeding program design, its inherent complexity can make this challenging.
Azadeh Hassanpour, Antje Rohde, Henner Simianer, Torsten Pook   +3 more
wiley   +1 more source

The conserved ATPase PCH-2 controls the number and distribution of crossovers by antagonizing their formation in Caenorhabditis elegans

eLife
Meiotic crossover recombination is essential for both accurate chromosome segregation and the generation of new haplotypes for natural selection to act upon. This requirement is known as crossover assurance and is one example of crossover control.
Bhumil Patel, Maryke Grobler, Alberto Herrera, Elias Logari, Valery Ortiz, Needhi Bhalla   +5 more
doaj   +1 more source

Target Capture Sequencing Provides Insights Into Hybridogenetic Water Frogs

Ecology and Evolution, Volume 16, Issue 5, May 2026.
The genomics of European frogs of the genus Pelophylax are intriguing due to their propensity to hybridise, the prevalence of polyploidy, and the unusual hemiclonal hybridogenetic complexes formed in many populations. This study examines the use of target capture sequencing using the Frog Cap bait set to investigate these complex systems.
Lisanne van Veldhuijzen, Maciej Pabijan, Tariq Stark, Richard P. J. H. Struijk, Ben Wielstra, James France   +5 more
wiley   +1 more source

Replication protein-A, RPA, plays a pivotal role in the maintenance of recombination checkpoint in yeast meiosis

Scientific Reports
DNA double-strand breaks (DSBs) activate DNA damage responses (DDRs) in both mitotic and meiotic cells. A single-stranded DNA (ssDNA) binding protein, Replication protein-A (RPA) binds to the ssDNA formed at DSBs to activate ATR/Mec1 kinase for the ...
Arivarasan Sampathkumar, Chen Zhong, Yuting Tang, Yurika Fujita, Masaru Ito, Akira Shinohara   +5 more
doaj   +1 more source

CRL4 regulates recombination and synaptonemal complex aggregation in the Caenorhabditis elegans germline.

PLoS Genetics, 2019
To maintain the integrity of the genome, meiotic DNA double strand breaks (DSBs) need to form by the meiosis-specific nuclease Spo11 and be repaired by homologous recombination.
Benjamin Alleva, Sean Clausen, Emily Koury, Adam Hefel, Sarit Smolikove   +4 more
doaj   +1 more source

Regulation of Meiotic Recombination [PDF]

, 2011
Meiotic recombination results in the heritable rearrangement of DNA, primarily through reciprocal exchange between homologous chromosome or gene conversion. In plants these events are critical for ensuring proper chromosome segregation, facilitating DNA repair and providing a basis for genetic diversity.
openaire   +2 more sources