| Comparative mapping of QTLs for Al tolerance in rice and identification of positional Al-induced genes |
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| 作者姓名： | 毛传澡 杨玲 郑炳松 吴运荣 刘非燕 易可可 吴平 |
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| 作者单位： | State Key Laboratory of Plant Physiology and Biochemistry，College of Life Sciences，Zhejiang University，State Key Laboratory of Plant Physiology and Biochemistry，College of Life Sciences，Zhejiang University，State Key Laboratory of Plant Physiology and Biochemistry，College of Life Sciences，Zhejiang University，State Key Laboratory of Plant Physiology and Biochemistry，College of Life Sciences，Zhejiang University，State Key Laboratory of Plant Physiology and Biochemistry，College of Life Sciences，Zhejiang University，State Key Laboratory of Plant Physiology and Biochemistry，College of Life Sciences，Zhejiang University，State Key Laboratory of Plant Physiology and Biochemistry，College of Life Sciences，Zhejiang University Hangzhou 310029，China，Hangzhou 310029，China，Hangzhou 310029，China，Hangzhou 310029，China，Hangzhou 310029，China，Hangzhou 310029，China，Hangzhou 310029，China |
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| 基金项目： | Project (No. 30070070) supported by the National NaturalScience Foundation of China |
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| 摘 要： | INTRODUCTION Aluminum (Al) toxicity is one of the mostimportant yield-limiting factors for crop grown onacid upland and lowland acid sulphate soils (IRRI,1978). Al toxicity results in a reduced and damagedroot system, which in turn causes the affectedplants to be susceptible to drought stress and min-eral nutrient deficiencies (Foy, 1988). The physio-logical and biochemical mechanisms of the toxiceffect of Al on root elongation had been extensivelyinvestigated (Matsumoto, 2000). T…
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Comparative mapping of QTLs for Al tolerance in rice and identification of positional Al-induced genes |
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| MAO Chuan-zao,YANG Ling,ZHENG Bing-song,WU Yun-rong,LIU Fei-yan,YI Ke-ke,WU Ping.Comparative mapping of QTLs for Al tolerance in rice and identification of positional Al-induced genes[J].Journal of Zhejiang University Science,2004(6). |
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| Authors: | MAO Chuan-zao YANG Ling ZHENG Bing-song WU Yun-rong LIU Fei-yan YI Ke-ke WU Ping |
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| Abstract: | Aluminum (Al) toxicity is the major factor limiting crop productivity in acid soils. In this study, a recombinant inbreed line (RIL) population derived from a cross between an Al sensitive lowland indica rice variety IR1552 and an Al tolerant upland japonica rice variety Azucena, was used for mapping quantitative trait loci (QTLs) for Al tolerance. Three QTLs for relative root length (RRL) were detected on chromosome 1, 9, 12, respectively, and 1 QTL for root length under Al stress is identical on chromosome 1 after one week and two weeks stress. Comparison of QTLs on chromosome 1 from different studies indicated an identical interval between C86 and RZ801 with gene(s) for Al tolerance. This interval provides an important start point for isolating genes responsible for Al tolerance and understanding the genetic nature of Al tolerance in rice. Four Al induced ESTs located in this interval were screened by reverse Northern analysis and confirmed by Northern analysis. They would be candidate genes for the QTL. |
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| Keywords: | Aluminum tolerance Quantitative trait loci (QTL) Expressed sequence tag (EST) Gene Rice (Oryza sativa L ) |
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