Paternal effects in Arabidopsis indicate that offspring can influence their own size.
The existence of genetic variation in offspring size in plants and animals is puzzling because offspring size is often strongly associated with fitness and expected to be under stabilizing selection. An explanation for variation in seed size is conflict between parents and between parents and offspring. However, for this hypothesis to be true, it must be shown that the offspring genotype can affect its own size. The existence of paternal effects would support this hypothesis, but these have rarely been shown. Using a diallel cross among four natural accessions of Arabidopsis thaliana we show that maternal, paternal and positional effects jointly influence seed size, number and the frequency of seed abortion. We found that seed abortion (%) depends on the combination of maternal and paternal genotypes, suggesting the existence of mate choice or epistatic incompatibility among accessions of A. thaliana. In addition, since paternal genotype explains approximately 10 per cent of the variation in seed size, we propose that A. thaliana's offspring must influence the amount of resources allocated to themselves. Identification of paternal effects in Arabidopsis should facilitate dissection of the genetic mechanisms involved in paternal effects.
House
Clarissa
C
Centre for Ecology and Conservation, School of Biosciences, University of Exeter, Penryn, Cornwall TR10 9EZ, UK.
Roth
Charlotte
C
Hunt
John
J
Kover
Paula X
PX
D017360:Arabidopsis / Q000235:genetics / Q000254:growth & development* / Q000502:physiology; D003433:Crosses, Genetic; D014644:Genetic Variation; D005838:Genotype; D054817:Pollination; D012639:Seeds / Q000235:genetics / Q000254:growth & development*
Proc Natl Acad Sci U S A. 2005 Feb 22;102(8):3117-22
15708974
Am J Bot. 2005 Feb;92(2):205-13
21652397
Nature. 2000 Mar 2;404(6773):91-4
10716449
Plant Physiol. 2003 Apr;131(4):1661-70
12692325
Plant Cell. 1994 Dec;6(12):1775-87
7866023
PLoS Biol. 2007 Sep;5(9):e236
17803357
Am J Bot. 2006 Mar;93(3):389-98
21646199
Evolution. 2005 Jul;59(7):1437-48
16153030
Evolution. 2001 Oct;55(10):1932-42
11761055
Science. 2004 Jan 23;303(5657):521-3
14631047
Am J Bot. 2000 Jan;87(1):124-32
10636835
J Exp Bot. 2000 Feb;51(343):167-75
10938823
New Phytol. 2009 Aug;183(3):826-838
19572917
Oecologia. 1993 Apr;93(4):571-575
28313827
Nat Genet. 2005 Jan;37(1):28-30
15619622
Plant Physiol. 2000 Jul;123(3):795-805
10889228
PLoS Genet. 2009 Jul;5(7):e1000551
19593375
Proc Natl Acad Sci U S A. 1999 Apr 13;96(8):4710-7
10200327
J Evol Biol. 2005 May;18(3):676-82
15842497
Plant Cell. 2004 Dec;16(12):3174-80
15579806
Plant Physiol. 2002 Jun;129(2):440-50
12068090
Nat Genet. 2006 Aug;38(8):876-8
16823380
Trends Ecol Evol. 1998 Oct 1;13(10):403-7
21238360
Science. 2003 Jun 13;300(5626):1742-5
12805547
Trends Plant Sci. 2007 Oct;12(10):439-43
17855155
PLoS One. 2008 May 28;3(5):e2298
18509545
Plant Cell. 2005 Jan;17(1):52-60
15598800
J Evol Biol. 2009 Jul;22(7):1407-17
19460082
Annu Rev Genet. 1993;27:181-204
8122901
Development. 1998 Sep;125(17):3329-41
9693137
Science. 2009 Jun 12;324(5933):1447-51
19520961
Evolution. 1993 Apr;47(2):540-555
28568726
Heredity (Edinb). 1987 Oct;59 ( Pt 2):181-97
3316130
Heredity (Edinb). 2003 Jul;91(1):36-42
12815451
Plant Cell. 1999 Oct;11(10):1945-52
10521524
Trends Ecol Evol. 1989 Jan;4(1):24-6
21227308
Genes Genet Syst. 2007 Jun;82(3):177-86
17660688
Genetics. 2008 Jun;179(2):829-41
18505878
Curr Opin Genet Dev. 2007 Dec;17(6):500-4
18006296
Plant Physiol. 2004 Apr;134(4):1813-23
15064384