Sequence heterogeneity of the envelope-like domain in cultivated allotetraploid Gossypium species and their diploid progenitors

• Authors: E. E. Hafez , Ghany A. A. Abdel , A. H. Paterson , E. A Zaki
• Languages of publication: EN

Abstracts

EN

Retroviral envelope (env)-like sequences in 2 cultivated allotetraploid cottons and their diploid progenitors have been identified and characterized in this study. DNA sequence analysis reveals that these sequences are heterogeneous. The observed sequence diversity, however, seems to preserve coding information. This is evidenced by the detection of the transmembrane domain (TM), which is the most conserved feature of the divergent retroviral env genes. The high ratio of synonymous to nonsynonymous changes suggests that these sequences are evolving under purifying selection. Phylogenetic analysis shows that Gossypium sequences closely cluster with a lineage of plant endogenous retroviruses that have an env-like gene. These results provide evidence for the antiquity and the wide diversity of env-like sequences in the Gossypium genome.

Keywords

EN

ENVELOPE GENE; GOSSYPIUM; HORIZONTAL TRANSFER; METAVIRUS; RETROTRANSPOSON; RETROVIRUS

Discipline

• GENETICS: GENETICS

• Publisher: Institute of Plant Genetics, Polish Academy of Sciences
• Journal: Journal of Applied Genetics
• Year: 2009
• Volume: 50
• Issue: 1
• Pages: 17-23

Contributors

author

E. E. Hafez

author

Ghany A. A. Abdel

author

A. H. Paterson

author

E. A Zaki

• Document Type: ARTICLE
• Publication order reference: E.A. Zaki, Division of Medical Genetics, The Saban Research Institute, Childrens Hospital Los Angeles, University of Southern California, 4650 Sunset Blvd, Mail Box 90, Los Angeles, CA 90027, USA