Transcriptomics

Dataset Information

0

Transcriptomic changes following hybridization and allopolyploidy in two salt marsh species


ABSTRACT: Transcriptomic changes following recent natural hybridization and allopolyploidy in the salt marsh species Spartina x townsendii and Spartina anglica (Poaceae) Allopolyploidy results from two events: the merger of divergent genomes and genome duplication. Both events have important functional consequences for the evolution and adaption of newly formed allopolyploid species. In spite of significant progress made the last years, a few studies have decoupled the effects of hybridization from genome duplication in the observed patterns of expression changes accompanying allopolyploidy in natural conditions. We used Agilent Rice oligo-microarrays to explore gene expression changes following allopolyploidy in Spartina that includes a classical example of recent allopolyploid speciation, S. anglica formed during the 19th century following genome duplication of the hybrid S. x townsendii. Our data indicate important, thought different effects of hybridization and genome duplication in the expression patterns of the hybrid and allopolyploid. Deviation from parental additivity was most important following hybridization and was accompanied by maternal expression dominance, although transgressively expressed genes were also encountered. Maternal dominance is attenuated following genome duplication in S. anglica while this species exhibits an increased number of transgressively over expressed genes. These results reflect the decoupled effects of the “genomic shock” following hybridization and genome redundancy, on the genetic, epigenetic and regulatory mechanisms characterizing transcriptomic evolution in allopolyploids.

ORGANISM(S): Oryza sativa Japonica Group Sporobolus anglicus Sporobolus alterniflorus Sporobolus maritimus Sporobolus x townsendii

PROVIDER: GSE18961 | GEO | 2010/11/10

SECONDARY ACCESSION(S): PRJNA121001

REPOSITORIES: GEO

Dataset's files

Source:
Action DRS
Other
Items per page:
1 - 1 of 1

Similar Datasets

2010-11-10 | E-GEOD-18961 | biostudies-arrayexpress
2018-05-23 | GSE95799 | GEO
2017-09-15 | GSE94076 | GEO
2012-04-30 | E-GEOD-29882 | biostudies-arrayexpress
2023-07-18 | GSE218592 | GEO
2015-06-24 | E-MTAB-3174 | biostudies-arrayexpress
| PRJNA121001 | ENA
2011-10-12 | GSE24682 | GEO
2009-09-01 | E-GEOD-17927 | biostudies-arrayexpress
2012-03-27 | GSE36755 | GEO