系統の異なるシロイヌナズナ（<i>Arabidopsis thaliana</i>）の セレン耐性および蓄積の違い

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  • 森武 栄光
    関西大学化学生命工学部栄養化学・食品化学研究室
  • 清水 栄人
    関西大学化学生命工学部栄養化学・食品化学研究室
  • 細見 亮太
    関西大学化学生命工学部栄養化学・食品化学研究室
  • 福永 健治
    関西大学化学生命工学部栄養化学・食品化学研究室
  • 吉田 宗弘
    関西大学化学生命工学部栄養化学・食品化学研究室

書誌事項

タイトル別名
  • Variation in selenium tolerance and accumulation among 72 <i>Arabidopsis thaliana</i> accessions
  • 系統の異なるシロイヌナズナ(Arabidopsis thaliana)のセレン耐性および蓄積の違い
  • ケイトウ ノ コトナル シロイヌナズナ(Arabidopsis thaliana)ノ セレン タイセイ オヨビ チクセキ ノ チガイ

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抄録

<p>Arabidopsis thaliana accessions have been screened and selected for identification and cloning of selenium (Se)related genes by comparing the differences in Se tolerance among the accessions. In the present study, we evaluated Se tolerance and accumulation in leaves and roots of 72 A. thaliana accessions. After cultivation of A. thaliana for 28 day at 25 ℃ under conditions of 0 and 1.0 ppm sodium selenite, root length and Se concentration in leaves and roots were measured. The Se tolerance index (STI) (calculated as root length in the presence of Se divided by root length in the non-Se medium) was used to correct for differences in growth between accessions in the non-Se condition. The STI varied from 0.28 to 2.24 among the 72 accessions. There was no correlation between the STI and Se concentration in leaves and roots. However, there was a significant correlation between Se concentration in leaves and roots among the accessions. We selected the Wt-2 and Kas-1 accessions as having the highest and lowest STI, respectively. The result of this study was the identification and selection of A. thaliana accessions based on differences in Se tolerance and accumulation. </p>

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