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The genetic structure of a wild wheat population has remained associated with microhabitats over 36 years

View ORCID ProfileTal Dahan-Meir, Thomas James Ellis, View ORCID ProfileFabrizio Mafessoni, View ORCID ProfileHanan Sela, Jacob Manisterski, Naomi Avivi-Ragolsky, Amir Raz, Moshe Feldman, Yehoshua Anikster, View ORCID ProfileMagnus Nordborg, View ORCID ProfileAvraham A. Levy
doi: https://doi.org/10.1101/2022.01.10.475641
Tal Dahan-Meir
1Department of Plant and Environmental Sciences, Weizmann Institute of Science; Rehovot, Israel
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  • ORCID record for Tal Dahan-Meir
Thomas James Ellis
2Gregor Mendel Institute, Austrian Academy of Sciences, Vienna BioCenter; Vienna, Austria
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Fabrizio Mafessoni
1Department of Plant and Environmental Sciences, Weizmann Institute of Science; Rehovot, Israel
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Hanan Sela
3Institute of Evolution, University of Haifa; Haifa, Israel
4The Institute for Cereal Crops Improvement, Tel-Aviv University; Tel Aviv, Israel
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Jacob Manisterski
4The Institute for Cereal Crops Improvement, Tel-Aviv University; Tel Aviv, Israel
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Naomi Avivi-Ragolsky
1Department of Plant and Environmental Sciences, Weizmann Institute of Science; Rehovot, Israel
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Amir Raz
1Department of Plant and Environmental Sciences, Weizmann Institute of Science; Rehovot, Israel
5Migal, Galilee Technology Center; Kiryat Shmona, Israel
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Moshe Feldman
1Department of Plant and Environmental Sciences, Weizmann Institute of Science; Rehovot, Israel
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Yehoshua Anikster
4The Institute for Cereal Crops Improvement, Tel-Aviv University; Tel Aviv, Israel
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Magnus Nordborg
2Gregor Mendel Institute, Austrian Academy of Sciences, Vienna BioCenter; Vienna, Austria
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  • For correspondence: avi.levy@weizmann.ac.il magnus.nordborg@gmi.oeaw.ac.at
Avraham A. Levy
1Department of Plant and Environmental Sciences, Weizmann Institute of Science; Rehovot, Israel
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  • ORCID record for Avraham A. Levy
  • For correspondence: avi.levy@weizmann.ac.il magnus.nordborg@gmi.oeaw.ac.at
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Abstract

Wild progenitors of major crops can help us understand domestication, and may also provide the genetic resources needed for ensuring food security in the face of climate change. We examined the genetic structure of a wild emmer wheat population, sampled over 36 years while both temperature and CO2 concentration increased significantly. The genotypes of 832 individuals revealed high genetic diversity over scales of tens of meters and were clustered spatially into ecological microhabitats. This pattern was remarkably stable over time. Simulations indicate that neutral processes alone are unlikely to fully explain the spatial and temporal stability of the population. These results are consistent with a role for local adaptation in shaping the fine-scale structure of plant populations, which is relevant for in-situ conservation strategies of biodiversity in nature.

Competing Interest Statement

The authors have declared no competing interest.

Footnotes

  • https://github.com/TalDM/Ammiad

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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-ND 4.0 International license.
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Posted January 11, 2022.
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The genetic structure of a wild wheat population has remained associated with microhabitats over 36 years
Tal Dahan-Meir, Thomas James Ellis, Fabrizio Mafessoni, Hanan Sela, Jacob Manisterski, Naomi Avivi-Ragolsky, Amir Raz, Moshe Feldman, Yehoshua Anikster, Magnus Nordborg, Avraham A. Levy
bioRxiv 2022.01.10.475641; doi: https://doi.org/10.1101/2022.01.10.475641
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The genetic structure of a wild wheat population has remained associated with microhabitats over 36 years
Tal Dahan-Meir, Thomas James Ellis, Fabrizio Mafessoni, Hanan Sela, Jacob Manisterski, Naomi Avivi-Ragolsky, Amir Raz, Moshe Feldman, Yehoshua Anikster, Magnus Nordborg, Avraham A. Levy
bioRxiv 2022.01.10.475641; doi: https://doi.org/10.1101/2022.01.10.475641

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