ArticleProceedings of the National Academy of Sciences of the United States of America2000
Genome evolution of wild barley (Hordeum spontaneum) by BARE-1 retrotransposon dynamics in response to sharp microclimatic divergence.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 182 papers.
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182 citing papers in PubMed, 606 citations in OpenAlex.
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- Epigenomics in stress tolerance of plants under the climate change.Molecular biology reports · 2023Review
- Genome size variation and polyploidy prevalence in the genusFrontiers in plant science · 2023Article
- Drought and recovery in barley: key gene networks and retrotransposon response.Frontiers in plant science · 2023Article
- Evolutionary Divergence betweenGenes · 2022Article
- The ecology of palm genomes: repeat-associated genome size expansion is constrained by aridity.The New phytologist · 2022Article
- Long terminal repeats (LTR) and transcription factors regulate PHRE1 and PHRE2 activity in Moso bamboo under heat stress.BMC plant biology · 2021Article
- Primer Binding Site (PBS) Profiling of Genetic Diversity of Natural Populations of Endemic SpeciesBiotech (Basel (Switzerland)) · 2021Article
- Clustered and dispersed chromosomal distribution of the two classes of Revolver transposon family in rye (Secale cereale).Journal of applied genetics · 2021Article
- Article
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5 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The replicative spread of retrotransposons in the genome creates new insertional polymorphisms, increasing retrotransposon numbers and potentially both their share of the genome and genome size. The BARE-1 retrotransposon constitutes a major, dispersed, active component of Hordeum genomes, and BARE-1 number is positively correlated with genome size. We have examined genome size and BARE-1 insertion patterns and number in wild barley, Hordeum spontaneum, in Evolution Canyon, Lower Nahal Oren, Mount Carmel, Israel, along a transect presenting sharply differing microclimates. BARE-1 has been sufficiently active for its insertional pattern to resolve individuals in a way consonant with their ecogeographical distribution in the canyon and to distinguish them from provenances outside the canyon. On both slopes, but especially on the drier south-facing slope, a simultaneous increase in the BARE-1 copy number and a decrease in the relative number lost through recombination, as measured by the abundance of solo long terminal repeats, appear to have driven the BARE-1 share of the genome upward with the height and dryness of the slope. The lower recombinational loss would favor maintenance of more full-length copies, enhancing the ability of the BARE-1 family to contribute to genome size growth. These local data are consistent with regional trends for BARE-1 in H. spontaneum across Israel and therefore may reflect adaptive selection for increasing genome size through retrotransposon activity.
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