Tandem gene duplication and fixed heterozygosity in the parasitic wasp,Trichogramma marylandense

1985 ◽  
Vol 41 (4) ◽  
pp. 508-509 ◽  
Author(s):  
A. C. F. Hung
Keyword(s):  
Gene Duplication ◽  
Parasitic Wasp ◽  
Tandem Gene Duplication ◽  
Fixed Heterozygosity

scholarly journals Origin of a function by tandem gene duplication limits the evolutionary capability of its sister copy

2010 ◽  
Vol 107 (30) ◽  
pp. 13378-13383 ◽  
Author(s):  
M. Hasselmann ◽  
S. Lechner ◽  
C. Schulte ◽  
M. Beye
Keyword(s):  
Gene Duplication ◽  
Tandem Gene Duplication

scholarly journals The Draft Genome of Kochia scoparia and the Mechanism of Glyphosate Resistance via Transposon-Mediated EPSPS Tandem Gene Duplication

2019 ◽  
Author(s):  
Eric L. Patterson ◽  
Christopher A. Saski ◽  
Daniel B. Sloan ◽  
Patrick J. Tranel ◽  
Philip Westra ◽  
...  
Keyword(s):  
Gene Duplication ◽  
Draft Genome ◽  
Mobile Element ◽  
Artificial Chromosome ◽  
Duplication Event ◽  
Kochia Scoparia ◽  
Tandem Gene Duplication ◽  
Draft Genome Assembly ◽  
Resistance Evolution ◽  
Gene Copies

ABSTRACTIncreased copy number of the 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) gene confers resistance to glyphosate, the world’s most-used herbicide. There are typically three to eight EPSPS copies arranged in tandem in glyphosate-resistant populations of the weed kochia (Kochia scoparia). Here, we report a draft genome assembly from a glyphosate-susceptible kochia individual. Additionally, we assembled the EPSPS locus from a glyphosate-resistant kochia plant by sequencing a kochia bacterial artificial chromosome library. These resources helped reconstruct the history of duplication in the structurally complex EPSPS locus and uncover the genes that are co-duplicated with EPSPS, several of which have a corresponding change in transcription. The comparison between the susceptible and resistant assemblies revealed two dominant repeat types. We discovered a FHY3/FAR1-like mobile genetic element that is associated with the duplicated EPSPS gene copies in the resistant line. We present a hypothetical model based on unequal crossing over that implicates this mobile element as responsible for the origin of the EPSPS gene duplication event and the evolution of herbicide resistance in this system. These findings add to our understanding of stress resistance evolution and provide an example of rapid resistance evolution to high levels of environmental stress.

scholarly journals New genes from old: asymmetric divergence of gene duplicates and the evolution of development

2017 ◽  
Vol 372 (1713) ◽  
pp. 20150480 ◽  
Author(s):  
Peter W. H. Holland ◽  
Ferdinand Marlétaz ◽  
Ignacio Maeso ◽  
Thomas L. Dunwell ◽  
Jordi Paps
Keyword(s):  
Gene Duplication ◽  
Homeobox Genes ◽  
Morphological Diversity ◽  
Gene Duplications ◽  
Tandem Gene Duplication ◽  
Sequence Change ◽  
New Genes ◽  
Gene Duplicates ◽  
Evo Devo ◽  
Animal Genomes

Gene duplications and gene losses have been frequent events in the evolution of animal genomes, with the balance between these two dynamic processes contributing to major differences in gene number between species. After gene duplication, it is common for both daughter genes to accumulate sequence change at approximately equal rates. In some cases, however, the accumulation of sequence change is highly uneven with one copy radically diverging from its paralogue. Such ‘asymmetric evolution’ seems commoner after tandem gene duplication than after whole-genome duplication, and can generate substantially novel genes. We describe examples of asymmetric evolution in duplicated homeobox genes of moths, molluscs and mammals, in each case generating new homeobox genes that were recruited to novel developmental roles. The prevalence of asymmetric divergence of gene duplicates has been underappreciated, in part, because the origin of highly divergent genes can be difficult to resolve using standard phylogenetic methods. This article is part of the themed issue ‘Evo-devo in the genomics era, and the origins of morphological diversity’.

Zinc Finger Gene Clusters and Tandem Gene Duplication

2002 ◽  
Vol 9 (2) ◽  
pp. 429-446 ◽  
Author(s):  
Mengxiang Tang ◽  
Michael Waterman ◽  
Shibu Yooseph
Keyword(s):  
Gene Duplication ◽  
Zinc Finger ◽  
Gene Clusters ◽  
Tandem Gene Duplication ◽  
Zinc Finger Gene

scholarly journals The Draft Genome of Kochia scoparia and the Mechanism of Glyphosate Resistance via Transposon-Mediated EPSPS Tandem Gene Duplication

2019 ◽  
Vol 11 (10) ◽  
pp. 2927-2940 ◽  
Author(s):  
Eric L Patterson ◽  
Christopher A Saski ◽  
Daniel B Sloan ◽  
Patrick J Tranel ◽  
Philip Westra ◽  
...  
Keyword(s):  
Gene Duplication ◽  
Draft Genome ◽  
Mobile Element ◽  
Artificial Chromosome ◽  
Duplication Event ◽  
Kochia Scoparia ◽  
Tandem Gene Duplication ◽  
Artificial Chromosomes ◽  
Resistance Evolution ◽  
Epsps Gene

Abstract Increased copy number of the 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS) gene confers resistance to glyphosate, the world’s most-used herbicide. There are typically three to eight EPSPS copies arranged in tandem in glyphosate-resistant populations of the weed kochia (Kochia scoparia). Here, we report a draft genome assembly from a glyphosate-susceptible kochia individual. Additionally, we assembled the EPSPS locus from a glyphosate-resistant kochia plant by sequencing select bacterial artificial chromosomes from a kochia bacterial artificial chromosome library. Comparing the resistant and susceptible EPSPS locus allowed us to reconstruct the history of duplication in the structurally complex EPSPS locus and uncover the genes that are coduplicated with EPSPS, several of which have a corresponding change in transcription. The comparison between the susceptible and resistant assemblies revealed two dominant repeat types. Additionally, we discovered a mobile genetic element with a FHY3/FAR1-like gene predicted in its sequence that is associated with the duplicated EPSPS gene copies in the resistant line. We present a hypothetical model based on unequal crossing over that implicates this mobile element as responsible for the origin of the EPSPS gene duplication event and the evolution of herbicide resistance in this system. These findings add to our understanding of stress resistance evolution and provide an example of rapid resistance evolution to high levels of environmental stress.

scholarly journals Tandem gene duplication and recombination at the AT3 locus in the Solanaceae, a gene essential for capsaicinoid biosynthesis in Capsicum

PLoS ONE ◽  
2019 ◽  
Vol 14 (1) ◽  
pp. e0210510 ◽  
Author(s):  
Ashley N. Egan ◽  
Shanna Moore ◽  
Giulia Marina Stellari ◽  
Byoung-Cheorl Kang ◽  
Molly M. Jahn
Keyword(s):  
Gene Duplication ◽  
Tandem Gene Duplication ◽  
Capsaicinoid Biosynthesis
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