PBG298/2007: Readings

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(May 16)
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With so much new stuff to be discovered ([http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&dopt=AbstractPlus&list_uids=15266374&query_hl=8&itool=pubmed_docsum mathematical models] of minor cytotype exclusion from a japanese group) I decided to settle on some steady material.
With so much new stuff to be discovered ([http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?db=pubmed&cmd=Retrieve&dopt=AbstractPlus&list_uids=15266374&query_hl=8&itool=pubmed_docsum mathematical models] of minor cytotype exclusion from a japanese group) I decided to settle on some steady material.
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For a review on the origins of Polyploids I offer up the first (of two) reviews by Justin Ramsey and Doug Schemske (1998). Focus on the sections about triploids and the triploid bridge. There is a lot of meat in this review
 
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The second is a paper by Brian Husband (who became Ramsey's Post-doc advisor when he left Schemske's lab) that looks at the effect of variability in triploid fitness on the evolution of polyploidy in populations.
 
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Last is a paper from the Comai group looking at the existence of variability in both triploid and aneuploid fitness. There is a previous paper in Genetics (Henry et al., 2005) that mirrors some of the figures presented in Ramsey and Schemske for maize (or Satina and Blakeslee 1936/37 in Datura, for that matter).
 
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The triploid bridge is not just for evolution, either. It gets used by breeders ocassionally, and talked about often. I have linked a paper by Carputo et al on the uses and usefulness of the "EBN", one of which is to make odd-ploidy hybrids as a bridge to allow gene flow between isolated species. I don't know if there is much interest in discussing this, but I tire of this high falootin fundamental biology stuff from time to time.
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#For a review on the origins of Polyploids I offer up the first (of two) reviews by Justin Ramsey and Doug Schemske ([http://arjournals.annualreviews.org/doi/abs/10.1146/annurev.ecolsys.29.1.467 1998], or [http://links.jstor.org/sici?sici=0066-4162(1998)29%3C467%3APMAROP%3E2.0.CO%3B2-R here]). The sections about triploids and the triploid bridge are all I think we should focus on. There is a lot of meat in this review.
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#The second is [http://www.blackwell-synergy.com/doi/abs/10.1111/j.1095-8312.2004.00339.x a paper by Brian Husband] (who became Ramsey's Post-doc advisor when he left Schemske's lab) that looks at the effect of variability in triploid fitness on the evolution of polyploidy in populations.
 +
 
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#Last is [http://genetics.plosjournals.org/perlserv/?request=get-document&doi=10.1371/journal.pgen.0030070 a paper from the Comai group] looking at the existence of variability in both triploid and aneuploid fitness. There is a previous paper in Genetics (Henry et al., 2005) that mirrors some of the figures presented in Ramsey and Schemske for maize (or Satina and Blakeslee 1936/37 in Datura, for that matter).
 +
 
 +
The triploid bridge is not just for evolution, either. It gets used by breeders ocassionally, and talked about often. I have linked [http://www.springerlink.com/content/bfu4m241knur2u9u/ a paper by Carputo et al.] on the uses and usefulness of the "EBN", one of which is to make odd-ploidy hybrids as a bridge to allow gene flow between isolated species. I don't know if there is much interest in discussing this, but I tire of this high falootin fundamental biology stuff from time to time.

Revision as of 02:59, 14 May 2007

UC Davis PBG298: Polyploid Genetics and Evolution Seminar

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Contents

April 10

Background with Pat!

  1. Otto SP and Whitton J. . pmid:11092833. PubMed HubMed [OW2000]

April 17

More population genetics of polyploidy!


I did a literature search today and found several interesting papers. I picked two for next week, but in the interest of time, I think we should focus on the first one (Walsh paper). The Comai paper can be background reading for people who want to do a little polyploidy catch-up (like me). Both Genetica and Nature Reviews Genetics are available online through the library.


  1. Walsh B. . pmid:12868616. PubMed HubMed [Walsh2003]
I read the beginning of this paper and scanned the rest. It addresses some of the ideas we touched on at the end of the April 10th class. It gets real mathy at the end, but it seems like a well-written paper (aka focus on the text and slide over the math parts).


  1. Comai L. . pmid:16304599. PubMed HubMed [Comai2005NRG]
Nice review, lots of pretty pictures of difficult to visualize inheritance mechanisms. Introduces some molecular genetic concepts not covered in other two papers.


April 24

Ploidy shifts with Pat and Brian.

The yeast haploid superiority article (Zeyl, 2003, Science below) dovetails nicely with the Walsh reading from April 17 and the Otto review from April 10.

A recent paper on gene duplicate evolution in Teleost fish should further expand on experimental observations related to evolution specific to polyploid contexts.


  1. Zeyl C, Vanderford T, and Carter M. . pmid:12543972. PubMed HubMed [Zeyl2003]
  1. Brunet FG, Roest Crollius H, Paris M, Aury JM, Gibert P, Jaillon O, Laudet V, and Robinson-Rechavi M. . pmid:16809621. PubMed HubMed [Brunet2006]

May 2

Speciation with Dena

Great paper from the Solti, Pires, and Leitch groups from a meeting proceedings at Kew Gardens. Demonstrates that in this case the species barrier was not overcome just once in a freak accident.

Polyploid tree frogs unite to form a complex interspecies swarm. Demonstrates recurrent polyploid formation can play a role in animal polyploid speciation too. Go frogs.

May 9

Contemporary polyploidy hybrids with Debra Ayers

Abbott and Lowe paper on Senecios (HTML): http://www.blackwell-synergy.com/doi/full/10.1111/j.1095-8312.2004.00333.x

Urbanska paper on Cardamine: http://springerlink.metapress.com/content/g6977375111059p4/fulltext.pdf

Plus unpublished nuggets on local spartina and tumbleweeds!

May 16

The triploid bridge with Brian

With so much new stuff to be discovered (mathematical models of minor cytotype exclusion from a japanese group) I decided to settle on some steady material.

  1. For a review on the origins of Polyploids I offer up the first (of two) reviews by Justin Ramsey and Doug Schemske (1998, or here). The sections about triploids and the triploid bridge are all I think we should focus on. There is a lot of meat in this review.
  1. The second is a paper by Brian Husband (who became Ramsey's Post-doc advisor when he left Schemske's lab) that looks at the effect of variability in triploid fitness on the evolution of polyploidy in populations.
  1. Last is a paper from the Comai group looking at the existence of variability in both triploid and aneuploid fitness. There is a previous paper in Genetics (Henry et al., 2005) that mirrors some of the figures presented in Ramsey and Schemske for maize (or Satina and Blakeslee 1936/37 in Datura, for that matter).

The triploid bridge is not just for evolution, either. It gets used by breeders ocassionally, and talked about often. I have linked a paper by Carputo et al. on the uses and usefulness of the "EBN", one of which is to make odd-ploidy hybrids as a bridge to allow gene flow between isolated species. I don't know if there is much interest in discussing this, but I tire of this high falootin fundamental biology stuff from time to time.

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