ULTRAVIOLET-B RADIATION-INDUCED ALTERATIONS IN PHOTOSYNTHETIC ELECTRON-TRANSPORT ACTIVITIES OF THE CYANOBACTERIUM SYNECHOCOCCUS-6301

Authors
RAJAGOPAL S MURTHY SDS
Citation
S. Rajagopal et Sds. Murthy, ULTRAVIOLET-B RADIATION-INDUCED ALTERATIONS IN PHOTOSYNTHETIC ELECTRON-TRANSPORT ACTIVITIES OF THE CYANOBACTERIUM SYNECHOCOCCUS-6301, Photosynthetica, 32(2), 1996, pp. 281-284
Citations number
20
Categorie Soggetti
Plant Sciences
Journal title
Photosynthetica → ACNP
ISSN journal
03003604
Volume
32
Issue
2
Year of publication
1996
Pages
281 - 284
Database
ISI
SICI code
0300-3604(1996)32:2<281:URAIPE>2.0.ZU;2-X
Abstract
Exposure of spheroplasts of Synechococcus to ultraviolet-B radiation i nduced loss in whole chain electron transport and photosystem (PS) 2 e lecton transport activities without affecting PS1. The measurements of PS2 activities both at limiting and saturating irradiances indicated that alterations in light-harvesting complex of PS2 as well as alterat ions in reaction centre were responsible for the inhibition of PS2 act ivity during short-term exposure to UV-B radiation.