Crassulacean acid metabolism may alleviate production of reactive oxygen species in a facultative CAM plant, the common ice plant Mesembryanthemum Crystallinum L.

Haruki Sunagawa, John C. Cushman, Sakae Agarie

研究成果: ジャーナルへの寄稿学術誌査読

17 被引用数 (Scopus)

抄録

We examined the function of CAM in reactive oxygen species (ROS) alleviation using a newly isolated CAM-defi cient mutant of a facultative halophyte Mesembryanthemum crystallinum L. Salt-stress (0.4 M NaCl) induced nocturnal malate synthesis in the leaves of the wild-type plant, but not in the mutant. The content of hydrogen peroxide (H2O2) increased with elapse of time under salt-stress, but it dropped accompanied by the expression of CAM in the wild-type plants. The CAM-performing wild-type plant grown with 0.4 M NaCl for 12 d showed signifi cantly larger diel fl uctuation of malate and signifi cantly lower levels of H2O2 than the mutant, particularly at the end of the light period. The transcript abundance of a gene encoding plastidic Cu/Zn-superoxide dismutase (SOD), a marker of ROS production, was higher in the leaves of mutant plants than in those of wild-type plants. These results indicated that the performance of CAM was accompanied by lower levels of ROS and that CAM may help to alleviate oxidative stress under conditions of environmental stress.

本文言語英語
ページ(範囲)256-260
ページ数5
ジャーナルPlant Production Science
13
3
DOI
出版ステータス出版済み - 2010
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 農業および作物学

フィンガープリント

「Crassulacean acid metabolism may alleviate production of reactive oxygen species in a facultative CAM plant, the common ice plant Mesembryanthemum Crystallinum L.」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル