Discordant Patterns of Introgression Suggest Historical Gene Flow into Thai Weedy Rice from Domesticated and Wild Relatives

被引:14
作者
Wedger, Marshall J. [1 ]
Pusadee, Tonapha [2 ]
Wongtamee, Anupong [3 ]
Olsen, Kenneth M. [1 ]
机构
[1] Washington Univ, Dept Biol, 1 Brookings Dr, St Louis, MO 63130 USA
[2] Chiang Mai Univ, Dept Plant & Soil Sci, Chiang Mai, Thailand
[3] Naresuan Univ, Dept Agr Sci, Phitsanulok, Thailand
关键词
agricultural weeds; dedomestication; domestication gene; Oryza sativa; southeast Asia; SSRs; ORYZA-SATIVA; RED RICE; SEED DORMANCY; POPULATION-STRUCTURE; PARALLEL EVOLUTION; PERICARP COLOR; SOFTWARE; ORIGINS; LOCI; DIVERSITY;
D O I
10.1093/jhered/esz030
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Weedy relatives of crop species infest agricultural fields worldwide, reducing harvests and threatening global food security. These weeds can potentially evolve and adapt through gene flow from both domesticated crop varieties and reproductively compatible wild relatives. We studied populations of weedy rice in Thailand to investigate the role of introgression from cultivated and wild rice in their evolution. We examined 2 complementary sources of genetic data: allelic variation at 3 rice domestication genes (Bh4, controlling hull color; Rc, controlling pericarp color and seed dormancy; and sh4, controlling seed shattering), and 12 previously published SSR markers. Sampling spanned 3 major rice growing regions in Thailand (Lower North, North East, and Central Plain) and included 124 cultivated rice accessions, 166 weedy rice accessions, and 98 wild rice accessions. Weedy rice strains were overall closely related to the cultivated varieties with which they co-occur. Domestication gene data revealed potential adaptive introgression of sh4 shattering alleles from wild rice. Introgression of potentially maladaptive rc crop alleles (conferring reduced dormancy) was also detected, with the frequency of the crop allele highest in northern populations. Although SSR markers also indicated introgression into weed populations from wild and cultivated rice, there was little overlap with domestication genes in the accessions showing admixed ancestry. This suggests that much of the introgression we detected at domestication genes most likely reflects past introgression rather than recent gene flow. This finding has implications for understanding long-term gene flow dynamics between rice and its weedy and wild relatives, including potential risks of transgene escape.
引用
收藏
页码:601 / 609
页数:9
相关论文
共 52 条
  • [1] Genetic relationships and diversity of weedy rice (Oryza sativa L.) and cultivated rice varieties in Okayama Prefecture, Japan
    Akasaka, Maiko
    Ushiki, Jun
    Iwata, Hiroyoshi
    Ishikawa, Ryuji
    Ishii, Toshio
    [J]. BREEDING SCIENCE, 2009, 59 (04) : 401 - 409
  • [2] Wild-weed-crop complexes of common bean (Phaseolus vulgaris L, Fabaceae) in the Andes of Peru and Colombia, and their implications for conservation and breeding
    Beebe, S
    Toro, O
    Gonzalez, AV
    Chacon, MI
    Debouck, DG
    [J]. GENETIC RESOURCES AND CROP EVOLUTION, 1997, 44 (01) : 73 - 91
  • [3] Genetic diversity and origin of weedy rice (Oryza sativa f. Spontanea) populations found in North-eastern China revealed by simple sequence repeat (SSR) markers
    Cao, Qianjin
    Lu, Bao-Rong
    Xia, Hui
    Rong, Jun
    Sala, Francesco
    Spada, Alberto
    Grassi, Fabrizio
    [J]. ANNALS OF BOTANY, 2006, 98 (06) : 1241 - 1252
  • [4] SILICA-GEL - AN IDEAL MATERIAL FOR FIELD PRESERVATION OF LEAF SAMPLES FOR DNA STUDIES
    CHASE, MW
    HILLS, HH
    [J]. TAXON, 1991, 40 (02) : 215 - 220
  • [5] Little White Lies: Pericarp Color Provides Insights into the Origins and Evolution of Southeast Asian Weedy Rice
    Cui, Yongxia
    Song, Beng Kah
    Li, Lin-Feng
    Li, Ya-Ling
    Huang, Zhongyun
    Caicedo, Ana L.
    Jia, Yulin
    Olsen, Kenneth M.
    [J]. G3-GENES GENOMES GENETICS, 2016, 6 (12): : 4105 - 4114
  • [6] INTERFERENCE OF RED RICE (ORYZA-SATIVA) WITH RICE (ORYZA-SATIVA)
    DIARRA, A
    SMITH, RJ
    TALBERT, RE
    [J]. WEED SCIENCE, 1985, 33 (05) : 644 - 649
  • [7] Doyle J. J., 1987, Phytochem Bull, V19, P11, DOI [10.1016/0031-9422%2880%2985004-7, DOI 10.2307/4119796]
  • [8] Crops gone wild: evolution of weeds and invasives from domesticated ancestors
    Ellstrand, Norman C.
    Heredia, Sylvia M.
    Leak-Garcia, Janet A.
    Heraty, Joanne M.
    Burger, Jutta C.
    Yao, Li
    Nohzadeh-Malakshah, Sahar
    Ridley, Caroline E.
    [J]. EVOLUTIONARY APPLICATIONS, 2010, 3 (5-6): : 494 - 504
  • [9] Gene flow from Clearfield® rice to weedy rice under field conditions
    Engku, A. K.
    Norida, M.
    Juraimi, A. S.
    Rafii, M. Y.
    Abdullah, S. N. A.
    Alam, M. A.
    [J]. PLANT SOIL AND ENVIRONMENT, 2016, 62 (01) : 16 - 22
  • [10] Detecting the number of clusters of individuals using the software STRUCTURE: a simulation study
    Evanno, G
    Regnaut, S
    Goudet, J
    [J]. MOLECULAR ECOLOGY, 2005, 14 (08) : 2611 - 2620