scholarly journals Gene Flow from Cultivated Rice (Oryza sativa) to its Weedy and Wild Relatives

2004 ◽  
Vol 93 (1) ◽  
pp. 67-73 ◽  
Author(s):  
L. J. CHEN
Keyword(s):  
Oryza Sativa ◽  
Gene Flow ◽  
Wild Relatives ◽  
Cultivated Rice

scholarly journals Chloroplast DNA polymorphism and evolutional relationships between Asian cultivated rice (Oryza sativa) and its wild relatives (O. rufipogon)

2012 ◽  
Vol 11 (4) ◽  
pp. 4418-4431 ◽  
Author(s):  
W.J. Li ◽  
B. Zhang ◽  
G.W. Huang ◽  
G.P. Kang ◽  
M.Z. Liang ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Chloroplast Dna ◽  
Dna Polymorphism ◽  
Wild Relatives ◽  
Cultivated Rice

scholarly journals Variations of Floral Traits in Asian Cultivated Rice (Oryza sativa L.) and its Wild Relatives (O. rufipogon Griff.)

2003 ◽  
Vol 53 (4) ◽  
pp. 345-352 ◽  
Author(s):  
Yusaku Uga ◽  
Yoshimichi Fukuta ◽  
Ryo Ohsawa ◽  
Tatsuhito Fujimura
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Wild Relatives ◽  
Floral Traits ◽  
Cultivated Rice

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

2019 ◽  
Vol 110 (5) ◽  
pp. 601-609 ◽  
Author(s):  
Marshall J Wedger ◽  
Tonapha Pusadee ◽  
Anupong Wongtamee ◽  
Kenneth M Olsen
Keyword(s):  
Gene Flow ◽  
Ssr Markers ◽  
Wild Rice ◽  
Allelic Variation ◽  
Wild Relatives ◽  
Weedy Rice ◽  
Cultivated Rice ◽  
Crop Species ◽  
Global Food Security ◽  
North East

Abstract 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.

Gene flow from weedy red rice (Oryza sativa L.) to cultivated rice and fitness of hybrids

2009 ◽  
Vol 65 (10) ◽  
pp. 1124-1129 ◽  
Author(s):  
Vinod K Shivrain ◽  
Nilda R Burgos ◽  
David R Gealy ◽  
Marites A Sales ◽  
Kenneth L Smith
Keyword(s):  
Oryza Sativa ◽  
Gene Flow ◽  
Oryza Sativa L ◽  
Red Rice ◽  
Cultivated Rice ◽  
Weedy Red Rice

scholarly journals Complex evolution of S5, a major reproductive barrier regulator, in the cultivated rice Oryza sativa and its wild relatives

2011 ◽  
Vol 191 (1) ◽  
pp. 275-287 ◽  
Author(s):  
Hongyi Du ◽  
Yidan Ouyang ◽  
Chengjun Zhang ◽  
Qifa Zhang
Keyword(s):  
Oryza Sativa ◽  
Wild Relatives ◽  
Reproductive Barrier ◽  
Cultivated Rice

Gene flow from cultivated rice (Oryza sativa L.) to wild Oryza species (O. rufipogon Griff. and O. nivara Sharma and Shastry) on the Vientiane plain of Laos

Euphytica ◽  
2005 ◽  
Vol 142 (1-2) ◽  
pp. 75-83 ◽  
Author(s):  
Yosuke Kuroda ◽  
Yo-Ichiro Sato ◽  
Chay Bounphanousay ◽  
Yasuyuki Kono ◽  
Koji Tanaka
Keyword(s):  
Oryza Sativa ◽  
Gene Flow ◽  
Oryza Sativa L ◽  
Oryza Species ◽  
Cultivated Rice ◽  
Wild Oryza Species

Field assessments of gene flow from transgenic to cultivated rice (Oryza sativa L.) using a herbicide resistance gene as tracer marker

2001 ◽  
Vol 103 (8) ◽  
pp. 1151-1159 ◽  
Author(s):  
J. Messeguer ◽  
C. Fogher ◽  
E. Guiderdoni ◽  
V. Marfà ◽  
M. M. Català ◽  
...  
Keyword(s):  
Oryza Sativa ◽  
Gene Flow ◽  
Resistance Gene ◽  
Herbicide Resistance ◽  
Oryza Sativa L ◽  
Cultivated Rice ◽  
Herbicide Resistance Gene
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