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Protein domain evolution is associated with reproductive diversification and adaptive radiation in the genus Eucalyptus

Protein domain evolution is associated with reproductive diversification and adaptive radiation in the genus Eucalyptus

Authors :
Anna R. Kersting
Alexander Andrew Myburg
Eshchar Mizrachi
Erich Bornberg-Bauer
Source :
New Phytologist. 206:1328-1336
Publication Year :
2014
Publisher :
Wiley, 2014.

Abstract

Summary Eucalyptus is a pivotal genus within the rosid order Myrtales with distinct geographic history and adaptations. Comparative analysis of protein domain evolution in the newly sequenced Eucalyptus grandis genome and other rosid lineages sheds light on the adaptive mechanisms integral to the success of this genus of woody perennials. We reconstructed the ancestral domain content to elucidate the gain, loss and expansion of protein domains and domain arrangements in Eucalyptus in the context of rosid phylogeny. We used functional gene ontology (GO) annotation of genes to investigate the possible biological and evolutionary consequences of protein domain expansion. We found that protein modulation within the angiosperms occurred primarily on the level of expansion of certain domains and arrangements. Using RNA-Seq data from E. grandis, we showed that domain expansions have contributed to tissue-specific expression of tandemly duplicated genes. Our results indicate that tandem duplication of genes, a key feature of the Eucalyptus genome, has played an important role in the expansion of domains, particularly in proteins related to the specialization of reproduction and biotic and abiotic interactions affecting root and floral biology, and that tissue-specific expression of proteins with expanded domains has facilitated subfunctionalization in domain families.

Details

ISSN :
14698137 and 0028646X
Volume :
206
Database :
OpenAIRE
Journal :
New Phytologist
Accession number :
edsair.doi.dedup.....29f3268c3359f7a88f54146e486842a3
Full Text :
https://doi.org/10.1111/nph.13211