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Genetic Analysis and Molecular Mapping of Light-Sensitive Red-Root Mutant in Rice 被引量:2

Genetic Analysis and Molecular Mapping of Light-Sensitive Red-Root Mutant in Rice
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摘要 The light-sensitive red-root mutant, designated as HG1, was newly observed from an indica rice variety, Nankinkodo, when seedlings were grown with roots exposed to natural light. The root color of the mutant began to turn slight-red when the roots were exposed to the light at the intensity of 29 )Jmol/(m^2·s), then turned dark-red at the light intensity of 180 pmol/(m^2·s), suggesting that the root color of the mutant was evidently sensitive to light. Furthermore, genetic analysis showed that the character of light-sensitive red-root of the HG1 mutant was controlled by a single dominant gene, tentatively designated as Lsr. With simple sequence repeat markers, Lsrgene was located between the markers RM252 and RM303 on chromosome 4 with the genetic distances of 9.8 cM and 6.4 cM, respectively. These results could be useful for fine mapping and cloning of Lsrgene in rice. The light-sensitive red-root mutant, designated as HG1, was newly observed from an indica rice variety, Nankinkodo, when seedlings were grown with roots exposed to natural light. The root color of the mutant began to turn slight-red when the roots were exposed to the light at the intensity of 29 )Jmol/(m^2·s), then turned dark-red at the light intensity of 180 pmol/(m^2·s), suggesting that the root color of the mutant was evidently sensitive to light. Furthermore, genetic analysis showed that the character of light-sensitive red-root of the HG1 mutant was controlled by a single dominant gene, tentatively designated as Lsr. With simple sequence repeat markers, Lsrgene was located between the markers RM252 and RM303 on chromosome 4 with the genetic distances of 9.8 cM and 6.4 cM, respectively. These results could be useful for fine mapping and cloning of Lsrgene in rice.
出处 《Rice science》 SCIE 2009年第1期27-32,共6页 水稻科学(英文版)
基金 supported by the Shanghai Municipal Education Commission of China (Grant No. 06ZZ21) Shanghai Municipal Science and Technology Commission of China (Grant Nos. 06PJ14074, 075405117 and 08PJ14085) the 948 Program from Ministry of Agriculture, China (Grant No. 2006-G1)
关键词 RICE light sensitivity red root mutant genetic analysis gene mapping rice light sensitivity red root mutant genetic analysis gene mapping
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