1. RITE共同研究概要 : 苛酷環境生育藍藻の苛酷環境適応遺伝子の探索
- Subjects
Desiccation tolerance ,DNA microarray ,bacteria ,Cyanobacteria ,Trehalose metabolism - Abstract
Genes for desiccation tolerance in a cyanobacterium, Anabaena sp. strain PCC 7120, were screened using DNA microarray. It was found that the genes for trehalose synthesis, and trehalose hydrolysis were expressed markedly by desiccation stress. The amount of trehalose accumulated during dehydration was small, while a large amount of sucrose was accumulated. Disruption of genes for trehalose synthesis resul ted in a decrease of cellular trehalose level and cell viability duri.ng dehydration. It was concluded that genes for trehalase metabolism were very important for the desiccation torelanse of this cyanobacterium.
- Published
- 2005