摘要
Gene expression of glutathione peroxidase 3 (ATGPX3) in response to osmotic stress was analyzed in Arabidopsis using ATGPX3 promoter-glucuronidase (GUS) transgenic plants. High levels of GUS ex- pression were detected under osmotic stress in ATGPX3 promoter-GUS transgenic plants. Compared with the wild type, the growth and development of ATGPX3 mutants (atgpx3-1) were more sensitive to mannitol. In addition, the expression of RD29A, ABI1, ABI2 and RbohD in atgpx3-1 was induced by ABA stress. These results suggest that ATGPX3 might be involved in the signal transduction of osmotic stress.
Gene expression of glutathione peroxidase 3 （ATGPX3） in response to osmotic stress was analyzed in Arabidopsis using ATGPX3 promoter-glucuronidase （GUS） transgenic plants. High levels of GUS expression were detected under osmotic stress in ATGPX3 promoter-GUS transgenic plants. Compared with the wild type, the growth and development of ATGPX3 mutants （atgpx3-1） were more sensitive to mannitol. In addition, the expression of RD29A, ABI1, ABI2 and RbohD in atgpx3-1 was induced by ABA stress. These results suggest that ATGPX3 might be involved in the signal transduction of osmotic stress.
基金
Supported by the National Natural Science Foundation of China (Grant Nos. 30370765 & 30530430)
the National Key Basic Special Founds (Grant No. 2003CB114305)
the Natural Science Foundation of Henan Province (Grant No. 0411031400)
