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Deep sequencing of amplicons reveals widespread intraspecific hybridization and multiple origins of polyploidy in big sagebrush (Artemisia tridentata, Asteraceae)


Richardson, Bryce A.; Page, Justin T.; Bajgain, Prabin; Sanderson, Stewart C.; Udall, Joshua A. 2012. Deep sequencing of amplicons reveals widespread intraspecific hybridization and multiple origins of polyploidy in big sagebrush (Artemisia tridentata, Asteraceae). American Journal of Botany. 99(12): 1962-1975.

doi: 10.3732/ajb.1200373

Premise of the study: Hybridization has played an important role in the evolution and ecological adaptation of diploid and polyploid plants. Artemisia tridentata (Asteraceae) tetraploids are extremely widespread and of great ecological importance. These tetraploids are often taxonomically identified as A. tridentata subsp. wyomingensis or as autotetraploids of diploid subspecies tridentata and vaseyana. Few details are available as to how these tetraploids are formed or how they are related to diploid subspecies.

Keywords: Artemesia tridentata, Asteraceae, gene discordance, haplotype clustering, networks, phylogeny, pyrosequencing, reticulate evolution


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http://www.fs.fed.us/rm/pubs_other/rmrs_2012_richardson_b002.pdf

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Title: RMRS Other Publications: Deep sequencing of amplicons reveals widespread intraspecific hybridization and multiple origins of polyploidy in big sagebrush (Artemisia tridentata, Asteraceae)
Electronic Publish Date: January 7, 2013
Last Update:
January 7, 2013

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