抄録
We have isolated a marine planktonic cyanobacterium Oscillatoria sp. NKBG 091600 which is resistant to ultraviolet-A (UV-A) irradiation. In response to UV-A irradiation this cyanobacterium produces high levels of a UV-A absorbing compound which was identified previously as biopterin glucoside. Here, we have investigated the effect of UV-A light intensity on growth, biopterin glucoside production and photosynthetic activity. Oscillatoria sp. NKBG 091600 could grow at UV-A intensities of up to 800 μW/cm2 and at 300 μW/cm2 could grow as well as in the absence of UV-A irradiation. In addition, pre-culture of cells with UV-A protected cells from UV-A induced inhibition of photosynthetic activity. Detection of biopterin glucoside levels in irradiated cells by HPLC demonstrated that after 10 h there was a rapid increase in biopterin glucoside content. This increase was dependent on the intensity of the UV-A irradiation.
本文言語 | English |
---|---|
ページ(範囲) | 165-168 |
ページ数 | 4 |
ジャーナル | BBA - General Subjects |
巻 | 1244 |
号 | 1 |
DOI | |
出版ステータス | Published - 1995 5月 11 |
外部発表 | はい |
ASJC Scopus subject areas
- 生物理学
- 生化学
- 分子生物学