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  On the origin and evolution of apomixis in Boechera

Lovell, J. T., Aliyu, O. M., Mau, M., Schranz, M. E., Koch, M., Kiefer, C., et al. (2013). On the origin and evolution of apomixis in Boechera. Plant Reproduction, 26(4), 309-315. doi:10.1007/s00497-013-0218-7.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0003-159C-6 Version Permalink: https://hdl.handle.net/21.11116/0000-0009-332A-F
Genre: Journal Article

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IMPRS039.pdf (Publisher version), 386KB
 
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 Creators:
Lovell, J. T., Author
Aliyu, O. M., Author
Mau, Martin1, Author           
Schranz, M. E., Author
Koch, Marcus, Author           
Kiefer, C., Author           
Song, Bao-Hua, Author           
Mitchell-Olds, Thomas, Author           
Sharbel, T. F., Author
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1IMPRS on Ecological Interactions, MPI for Chemical Ecology, Max Planck Society, ou_421900              

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 Abstract: The genetic mechanisms causing seed development by gametophytic apomixis in plants are predominantly unknown. As apomixis is consistently associated with hybridity and polyploidy, these confounding factors may either (a) be the underlying mechanism for the expression of apomixis, or (b) obscure the genetic factors which cause apomixis. To distinguish between these hypotheses, we analyzed the population genetic patterns of diploid and triploid apomictic lineages and their sexual progenitors in the genus Boechera (Brassicaceae). We find that while triploid apomixis is associated with hybridization, the majority of diploid apomictic lineages are likely the product of intra-specific crosses. We then show that these diploid apomicts are more likely to sire triploid apomictic lineages than conspecific sexuals. Combined with flow cytometric seed screen phenotyping for male and female components of apomixis, our analyses demonstrate that hybridization is an indirect correlate of apomixis in Boechera.

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 Dates: 2013-06-202013-12
 Publication Status: Issued
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 Identifiers: Other: IMPRS039
DOI: 10.1007/s00497-013-0218-7
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Title: Plant Reproduction
  Other : Plant Reprod
Source Genre: Journal
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Publ. Info: Berlin ; Heidelberg ; New York : Springer
Pages: - Volume / Issue: 26 (4) Sequence Number: - Start / End Page: 309 - 315 Identifier: ISSN: 2194-7961
CoNE: https://pure.mpg.de/cone/journals/resource/2194-7961