Ultraviolet-B induced changes in ultrastructure and D1/D2 proteins in cyanobacteria Synechococcus sp. PCC 7942

被引：10

作者：

Chauhan, S ^{[1
]}

Pandey, R ^{[1
]}

Singhal, GS ^{[1
]}

机构：

[1] Jawaharlal Nehru Univ, Sch Life Sci, Mol Biol Lab, New Delhi 110067, India

来源：

PHOTOSYNTHETICA | 1998年 / 35卷 / 02期

关键词：

carotenoids; cell shape; chlorophyll; phycocyanin; thylakoid;

D O I：

10.1023/A:1006939003814

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Effects of ultraviolet-B (UV-B) irradiation on ultrastructure, total cellular protein, and PS2 proteins D1 and D2 of Synechococcus sp, PCC 7942 cells was studied. The scanning electron micrographs showed UV-B radiation induced bending of the cells. The transmission electron micrographs revealed disorganization and shift in thylakoid lamellar structure to one side of the cell. The cellular phycocyanin/chlorophyll ratio decreased with increasing UV-B treatment and due to this the colour of cells turned light-green, No apparent change in total cellular proteins was evident, but the contents of two major proteins of PS2, D1 and D2, showed decline due to UV-B irradiation, although to different extent.

引用

页码：161 / 167

页数：7

共 25 条

[1] Effects of UV radiation on the rice field cyanobacterium, Aulosira fertilissima [J].