Absence of close-facing retrotransposons: A comparison of molecular data and theory

Bousios, Alexandros; Waxman, David J.; Pearce, Stephen R.

doi:10.1016/j.jtbi.2009.11.014

Cited by 1 publication

(2 citation statements)

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“…It is more probable that a large fraction of agave genome is composed of LTR retrotransposons, similar to the proportion in the genomes of maize, 50-80% (Meyers et al 2001) and barley, 70% (Feschotte et al 2002). Moreover, the presence of high copy number ungrouped elements and the fact that the estimates of copy number in this study are independent of other estimates using RNaseH domain sequences (Bousios et al 2010), suggest that Ty1-Copia retrotransposons are extremely abundant in the genome of A. tequilana. They have played a major role in the genome organisation and the evolution of A. tequilana.…”

Section: Copy Number and Heterogeneity Of Ty1-copia Retrotransposonssupporting

confidence: 52%

“…The percentage of agave genome occupied by Ty1-Copia elements might significantly be reduced by an active deletion mechanism like the unequal homologous recombination. According to Bousios et al (2010) the genome of A. tequilana lacks close facing Ty1-Copia elements. The absence of close facing retrotransposons in A. tequilana indicates the presence of a removal mechanism.…”

Section: Copy Number and Heterogeneity Of Ty1-copia Retrotransposonsmentioning

confidence: 99%

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Ty1-Copia retrotransposons are heterogeneous, extremely high copy number and are major players in the genome organization and evolution of Agave tequilana

Khaliq

Khan

Pearce

2011

Genet Resour Crop Evol

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Agave tequilana is native to Mexico and is famous for its use in the production of the alcoholic beverage tequila. The crop is extremely prone to insects and diseases, and a breeding programme for selection and conservation is required. Moreover, poorly understood classification of agave varieties and the limited availability of molecular data represent a big hurdle in its genetic research and improvement. Retrotransposons are mobile genetic elements that can occupy large proportions of plant genomes and play a vital role in their organisation and evolution. They can be used as genetic tools to address the challenges faced by A. tequilana. Ty1-Copia retrotransposons were isolated and characterised, and their copy number in the genome of A. tequilana was estimated. The phylogenetic analysis of isolated reverse transcriptase sequences showed that A. tequilana contains a large population of Ty1-Copia retrotransposons. They occur in the form of groups of closely related heterogeneous elements. The copy number estimates revealed that they are extremely abundant in A. tequilana. The characterisation of the Ty1-Copia population suggests that they are a major component of the agave genome and might have played a vital role in its genome organisation and evolution.

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Section: Copy Number and Heterogeneity Of Ty1-copia Retrotransposonssupporting

confidence: 52%

Section: Copy Number and Heterogeneity Of Ty1-copia Retrotransposonsmentioning

confidence: 99%

Ty1-Copia retrotransposons are heterogeneous, extremely high copy number and are major players in the genome organization and evolution of Agave tequilana

Khaliq

Khan

Pearce

2011

Genet Resour Crop Evol

View full text Add to dashboard Cite

show abstract

Absence of close-facing retrotransposons: A comparison of molecular data and theory

Cited by 1 publication

References 36 publications

Ty1-Copia retrotransposons are heterogeneous, extremely high copy number and are major players in the genome organization and evolution of Agave tequilana

Ty1-Copia retrotransposons are heterogeneous, extremely high copy number and are major players in the genome organization and evolution of Agave tequilana

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