The evolution and maintenance of monoecy and dioecy in Sagittaria latifolia (Alismataceae)

Evolution; International Journal of Organic Evolution
Marcel E DorkenSpencer C H Barrett

Abstract

Plant species rarely exhibit both monoecious and dioecious sexual systems. This limits opportunities to investigate the consequences of combined versus separate sex function on mating patterns and genetic variation and the analysis of factors responsible for the evolution and maintenance of the two sexual systems. Populations of the North American clonal aquatic Sagittaria latifolia are usually either monoecious or dioecious and often grow in close geographic proximity. We investigated mating patterns, genetic structure, and relationships between the two sexual systems using allozyme variation in populations from southern Ontario, Canada. As predicted, selfing rates in monoecious populations (n = 6, mean = 0.41) were significantly higher than in dioecious populations (n = 6, mean = 0.11). Moreover, marker-based estimates of inbreeding depression (delta) indicated strong selection against inbred offspring in both monoecious (mean delta = 0.83) and dioecious (mean delta = 0.84) populations. However, the difference in selfing rate between the sexual systems was not reflected in contrasting levels of genetic variation. Our surveys of 12 loci in 15 monoecious and 11 dioecious populations revealed no significant differences in the pr...Continue Reading

References

Feb 5, 2000·The American Naturalist·George D WeiblenMichael J Donoghue
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Citations

Apr 3, 2004·Proceedings. Biological Sciences·Marcel E Dorken, Spencer C H Barrett
Aug 25, 2006·Proceedings. Biological Sciences·Jana C VamosiSpencer C H Barrett
Aug 23, 2007·Proceedings. Biological Sciences·Jay M Biernaskie, Robert J Gegear
Jul 5, 2013·Proceedings. Biological Sciences·Spencer C H Barrett
Jul 2, 2003·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Spencer C H Barrett
Dec 17, 2009·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Spencer C H Barrett
Jan 6, 2010·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Spencer C H Barrett
Jul 21, 2010·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Spencer C H BarrettMelinda Pickup
Oct 31, 2012·PloS One·Elena Varela-ÁlvarezMaría Antonia Ribera Siguán
Feb 22, 2005·The New Phytologist·Gabriela Gleiser, Miguel Verdú
Apr 1, 2008·Journal of Evolutionary Biology·S M Eppley, L K Jesson
Feb 11, 2014·Journal of Evolutionary Biology·S B Yakimowski, S C H Barrett
May 13, 2014·Molecular Ecology·Sarah B Yakimowski, Spencer C H Barrett
Jul 1, 2014·Journal of Evolutionary Biology·T SchwanderD Roze
May 7, 2016·Evolution; International Journal of Organic Evolution·Sarah B Yakimowski, Spencer C H Barrett
Dec 18, 2012·Annals of Botany·Lawrence D Harder, Przemyslaw Prusinkiewicz
Jun 20, 2018·American Journal of Botany·L R RivkinMarc T J Johnson
Jun 17, 2018·Journal of Evolutionary Biology·Marcel E Dorken, Wendy E Van Drunen
Apr 23, 2002·Nature Reviews. Genetics·Spencer C H Barrett
Apr 10, 2007·Annals of Botany·Thomas R Meagher
Mar 31, 2005·Annals of Botany·Mónica MedranoSpencer C H Barrett
Mar 17, 2007·Critical Reviews in Food Science and Nutrition·N K RastogiD Knorr
Apr 28, 2006·Evolution; International Journal of Organic Evolution·Mike RamseyRod Peakall
Mar 10, 2015·Annual Review of Food Science and Technology·V M Bala BalasubramaniamRockendra Gupta
May 21, 2020·Evolutionary Applications·Sara UsandizagaMarie Laure Guillemin
Mar 10, 2011·Annals of Botany·Sarah B YakimowskiSpencer C H Barrett
Dec 7, 2017·BMC Evolutionary Biology·Daniel A Sasson, Joseph F Ryan
Oct 25, 2003·Evolution; International Journal of Organic Evolution·Marcel E Dorken, Spencer C H Barrett

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