Mapping quantitative trait loci associated with arsenic accumulation in rice (Oryza sativa).
The quantitative trait loci (QTLs) associated with arsenic (As) accumulation in rice were mapped using a doubled haploid population established by anther culture of F1 plants from a cross between a Japonica cultivar CJ06 and an Indica cultivar TN1 (Oryza sativa). Four QTLs for arsenic (As) concentrations were detected in the map. At the seedling stage, one QTL was mapped on chromosome 2 for As concentrations in shoots with 24.4% phenotypic variance and one QTL for As concentrations in roots was detected on chromosome 3. At maturity, two QTLs for As concentrations in grains were found on chromosomes 6 and 8, with 26.3 and 35.2% phenotypic variance, respectively. No common loci were detected among these three traits. Interestingly, the QTL on chromosome 8 was found to be colocated for As concentrations in grain at maturity and shoot phosphorus (P) concentrations at seedling stage. These results provide an insight into the genetic basis of As uptake and accumulation in rice, and will be useful in identifying genes associated with As accumulation.
Zhang
Jing
J
Department of Soil Environmental Sciences, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
Zhu
Yong-Guan
YG
Department of Soil Environmental Sciences, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
Zeng
Da-Li
DL
China National Rice Research Institute, Hangzhou 310006, China.
Cheng
Wang-Da
WD
Jiaxing Academy of Agricultural Sciences, Jiaxing 314016, China.
Qian
Qian
Q
China National Rice Research Institute, Hangzhou 310006, China.
Duan
Gui-Lan
GL
Department of Soil Environmental Sciences, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
D001151:Arsenic / Q000378:metabolism*; D002874:Chromosome Mapping; D032461:Chromosomes, Plant; D017343:Genes, Plant; D012275:Oryza / Q000235:genetics* / Q000378:metabolism*; D040641:Quantitative Trait Loci; D012989:Soil Pollutants
D012989:Soil Pollutants; D001151:Arsenic