Influence of High Light on the Cells of Cyanobacteria Synechococcus sp. PCC 7002

ProEnvironment Promediu

Sanda Opriș¹ 

[1] USAMV-CN, IPM

关键词: cyanobacteria;    Synechococcus sp.;    high light;    photosynthesis;    fluorescence;   

DOI  :  

学科分类：社会科学、人文和艺术（综合）

来源: Bioflux SRL

【 摘 要 】

In this article is presented the result of research regardind the effect of high light intensity on the cells of Synechococcus sp. PCC 7002. Cyanobacterial suspension was treated with high light (600 μE) for 120 minutes at a temperature of 380C, to study the adaptation of photosynthetic apparatus to light stress. Samples were analyzed in the present of herbicide diuron (DCMU) which blocks electron flow from photosystem II and without diuron. During treatment maximum fluorescence and photosystems efficiency are significantly reduced, reaching very low values compared with the blank, as a result of photoinhibition installation. Also by this treatment is shown the importance of the mechanisms by which cells detect the presence of light stress and react accordingly.

【 授权许可】

CC BY