Changes in gravitational forces induce modifications of gene expression in A-thaliana seedlings

被引:27
作者
Centis-Aubay, S
Gasset, G
Mazars, C
Ranjeva, R
Graziana, A
机构
[1] Univ Toulouse 3, Ctr Natl Rech Sci, F-31326 Castanet Tolosan, France
[2] Univ Toulouse 3, Grp Sci Biol & Med Spatiales, F-31062 Toulouse, France
关键词
Arabidopsis; gene expression; hypergravity; clinostat;
D O I
10.1007/s00425-003-1103-7
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
By comparing the expression patterns of selected genes from Arabidopsis thaliana (L.) Heynh. grown either at 1 g or on a clinostat (horizontally or vertically inverted, 1 rpm), and either used directly or after hypergravity stimulation, we have shown that the pattern of expression did not proceed in a stereotypical manner. Rather, the selected genes fell into different classes. These classes include (i) those insensitive to the gravitational conditions, (ii) those that are regulated in an opposite manner by hypergravity and clinostat conditions, (iii) those that are desensitised to hypergravity by long-term culture on a clinostat, and (iv) those enhanced by such a treatment. Our data suggest that rapid reorientation of gene expression is likely to occur in response to changes in the gravitational conditions.
引用
收藏
页码:179 / 185
页数:7
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