Analysis of genetic diversity in flowering dogwood natural stands using microsatellites: the effects of dogwood anthracnose.
Flowering dogwood (Cornus florida L.) populations recently have experienced severe declines caused by dogwood anthracnose. Mortality has ranged from 48 to 98%, raising the concern that genetic diversity has been reduced significantly. Microsatellite data were used to evaluate the level and distribution of genetic variation throughout much of the native range of the tree. Genetic variation in areas affected by anthracnose was as high as or higher than areas without die-offs. We found evidence of four widespread, spatially contiguous genetic clusters. However, there was little relationship between geographic distance and genetic difference. These observations suggest that high dispersal rates and large effective population sizes have so far prevented rapid loss of genetic diversity. The effects of anthracnose on demography and community structure are likely to be far more consequential than short-term genetic effects.
Hadziabdic
D
D
Department of Entomology and Plant Pathology, The University of Tennessee, 2431 Joe Johnson Dr, Knoxville, TN, 37996-4560, USA.
Fitzpatrick
B M
BM
Wang
X
X
Wadl
P A
PA
Rinehart
T A
TA
Ownley
B H
BH
Windham
M T
MT
Trigiano
R N
RN
D029768:Cornus / Q000235:genetics* / Q000382:microbiology; D018744:DNA, Plant / Q000235:genetics / Q000378:metabolism; D017343:Genes, Plant; D014644:Genetic Variation; D005828:Genetics, Population; D018895:Microsatellite Repeats; D005810:Multigene Family; D010935:Plant Diseases / Q000235:genetics*; D011156:Population Density; D014481:United States
D018744:DNA, Plant
Evolution. 1977 Jun;31(2):347-356
28563234
Ecol Appl. 2008 Mar;18(2):360-76
18488602
Genetics. 1943 Mar;28(2):114-38
17247074
Evol Bioinform Online. 2007 Feb 23;1:47-50
19325852
Mol Ecol. 2006 Jan;15(1):263-75
16367845
Genetics. 1992 Jun;131(2):479-91
1644282
Genetics. 2000 Jun;155(2):945-59
10835412
Science. 1988 Sep 16;241(4872):1455-60
3420403
Genetics. 1946 Jan;31:39-59
21009706
Mol Ecol. 2006 Dec;15(14):4261-93
17107465
Mol Ecol. 2005 Jul;14(8):2611-20
15969739
Genetics. 1931 Mar;16(2):97-159
17246615
Theor Popul Biol. 2001 Nov;60(3):227-37
11855957
Mol Biol Evol. 2000 Sep;17(9):1277-85
10958844
Mol Phylogenet Evol. 2008 Mar;46(3):1049-70
18055224
Theor Appl Genet. 1996 May;92(7):832-9
24166548
Genetics. 1997 Aug;146(4):1441-52
9258686
Am J Bot. 2005 Feb;92(2):262-71
21652403
Evolution. 2001 Sep;55(9):1717-33
11681728
J Hered. 2002 Mar-Apr;93(2):153-4
12140277