PuSH - Publication Server of Helmholtz Zentrum München: Extensive and biased intergenomic non-reciprocal DNA exchanges shaped a nascent polyploid genome, <em>Gossypium</em> (cotton).

Information

Clues to quality of journals

Open Access Policy of Helmholtz Association 2016

CC Licencences

Publication Metrics

Navigation

Home

Deutsch

EVA: Electronic Publishing

New EVA Application

Research

Advanced Search

Browse by ...

... HMGU-Authors/Consortia

... Organizational Structure

... Journal

... Publication Type

... Research Data

... Arbeitsgruppen

... Publication Year

Publication overview

Statistics

Statistics (last 5 years)

OA Publications

Publish

Submit Publication

Import publication from...

...EVA

Report missing publication

Highlights

Support & Contact

Contact persons

Help

Data protection

Helmholtz Open Science

JANE Journal Estimator

SHERPA/RoMEO

DOAJ

Export:

Text

Endnote (RIS) BIB

BibTeX

Guo, H.* ; Wang, X.* ; Gundlach, H. ; Mayer, K.F.X. ; Peterson, D.G.* ; Scheffler, B.E.* ; Chee, P.W.* ; Paterson, A.H.*

Extensive and biased intergenomic non-reciprocal DNA exchanges shaped a nascent polyploid genome, Gossypium (cotton).

Genetics 197, 1153-1163 (2014)

Publ. Version/Full Text

DOI

PMC

	Closed

Open Access Green as soon as Postprint is submitted to ZB.

Abstract
Metrics
Extra information

Genome duplication is thought to be central to the evolution of morphological complexity, and some polyploids enjoy a variety of capabilities that transgress those of their diploid progenitors. Comparison of genomic sequences from several tetraploid (AtDt) Gossypium species and genotypes with putative diploid A and D genome progenitor species revealed that unidirectional DNA exchanges between homeologous chromosomes were the predominant mechanism responsible for allelic differences between the Gossypium tetraploids and their diploid progenitors. HeGCE gradually subsided, declining to rates similar to random mutation during radiation of the polyploid into multiple clades and species. Despite occurring in a common nucleus, preservation of HeGCE is asymmetric in the two tetraploid subgenomes. At to Dt conversion is far more abundant than the reciprocal, is enriched in heterochromatin, is highly correlated with GC content and transposon distribution, and may silence abundant A-genome-derived retrotransposons. Dt to At conversion is abundant in euchromatin and genes, frequently reversing losses of gene function. The long-standing observation that the non-spinnable-fibered D genome contributes to the superior yield and quality of tetraploid cotton fibers may be explained by accelerated Dt to At conversion during cotton domestication and improvement, increasing dosage of alleles from the spinnable-fibered A genome. HeGCE may provide an alternative to (rare) reciprocal DNA exchanges between chromosomes in heterochromatin, where genes have ~5x greater abundance of Dt to At conversion than does adjacent intergenic DNA. Spanning exon-to-gene-sized regions, HeGCE is a natural non-invasive means of gene transfer with the precision of transformation, potentially important in genetic improvement of many crop plants.

Impact Factor

Scopus SNIP

Web of Science
Times Cited

Scopus
Cited By

Altmetric

4.389

1.263