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

Sanjay Chauhan; Ritu Pandey; Gauri S. Singhal

doi:10.1023/A:1006939003814

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

Sanjay Chauhan, Ritu Pandey, Gauri S. Singhal

Research output: Contribution to journal › Article › peer-review

11 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	161-167
Number of pages	7
Journal	Photosynthetica
Volume	35
Issue number	2
DOIs	https://doi.org/10.1023/A:1006939003814
State	Published - 1998
Externally published	Yes

Keywords

Carotenoids
Cell shape
Chlorophyll
Phycocyanin
Thylakoid

ASJC Scopus subject areas

Physiology
Plant Science

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10.1023/A:1006939003814

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

abstract = "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.",

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T1 - Ultraviolet-B induced changes in ultrastructure and D1/D2 proteins in cyanobacteria Synechococcus sp. PCC 7942

AU - Chauhan, Sanjay

AU - Pandey, Ritu

AU - Singhal, Gauri S.

PY - 1998

Y1 - 1998

N2 - 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.

AB - 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.

KW - Carotenoids

KW - Cell shape

KW - Chlorophyll

KW - Phycocyanin

KW - Thylakoid

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

Abstract

Keywords

ASJC Scopus subject areas

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