Isolation, Expression Characteristics and Chromosomal Locations of Three cDNA Fragments Under Salt Stress in Rice
文献类型: 外文期刊
第一作者: Qian, Q
作者: Qian, Q;Yanagihara, S;Teng, S;Zeng, DL;Zhu, LH;Chen, SY
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关键词: rice;differential screening;salt stress response;mapping
期刊名称:ACTA BOTANICA SINICA ( 影响因子:0.599; )
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收录情况: SCI
摘要: cDNA libraries were constructed from the leaves of a rice (Oryza sativa L.) salt tolerance variety Tesan'ai 2 growing in solutions with 150 mmol/L NaCl for 3 h or without salt stress. Three salt-responsive cDNA clones, Ts1, Ts2 and Ts3 were isolated by differential screening. Northern blotting analysis showed that the transcription levels of Ts1 and Ts2 increased within 3 h salt stress and kept on increasing within 24 h, while the transcription level of Ts3 reached its peak within 3 h. Sequence analysis indicated that there were no homologies between the three cDNA clones and any known gene. The three cDNA clones were mapped using a doubled haploid (DH) population derived from an indica variety ZYQ8, which was a salt tolerance parent of Tesan'ai 2, with a japonica variety JX17. Ts1, Ts2 and Ts3 were located on chromosomes 1, 3 and 7, respectively. It was noted that Ts1, Ts2, and Ts3 were in or near the regions of major or minor salt tolerance quantitative trait loci (QTLs), which were mapped in the same DH population in a parallel study.
分类号: Q94
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