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Differences in UV-B sensitivity between PSII from grana lamellae and stroma lamellae

Yu, Shi-Gui and Björn, Lars Olof LU (1996) In Journal of Photochemistry and Photobiology, B: Biology 34(1). p.35-38
Abstract
UV-B treatment of thylakoid membranes or fractions derived from them accelerates the first rise (Fo---Fi phase) of variable fluorescence and slows down the second (Fi---Fm) rise. This can be observed for all membrane fractions but to different extents. The grana fraction is affected more by the UV-B treatment than are the intact thylakoids and the stroma lamella fraction. An exogenous electron acceptor, 2,6-dichloro-p-benzoquinone, inhibits both the initial and second rises of the fluorescence induction kinetics including the changes induced by UV-B. However, other electron acceptors, such as 2,5-dimethyl-p-benzoquinone and methyl viologen quench only the second rise of the curve. Oxygen evolution from grana-derived membranes is more... (More)
UV-B treatment of thylakoid membranes or fractions derived from them accelerates the first rise (Fo---Fi phase) of variable fluorescence and slows down the second (Fi---Fm) rise. This can be observed for all membrane fractions but to different extents. The grana fraction is affected more by the UV-B treatment than are the intact thylakoids and the stroma lamella fraction. An exogenous electron acceptor, 2,6-dichloro-p-benzoquinone, inhibits both the initial and second rises of the fluorescence induction kinetics including the changes induced by UV-B. However, other electron acceptors, such as 2,5-dimethyl-p-benzoquinone and methyl viologen quench only the second rise of the curve. Oxygen evolution from grana-derived membranes is more sensitive to UV-B treatment than oxygen evolution from stroma lamella-derived membranes. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Stroma lamellae, Grana Lamellae, UV-B Sensitivity, Photosystem II
in
Journal of Photochemistry and Photobiology, B: Biology
volume
34
issue
1
pages
35 - 38
publisher
Elsevier
external identifiers
  • scopus:0030175034
ISSN
1011-1344
DOI
10.1016/1011-1344(95)07243-8
language
English
LU publication?
yes
id
899d2fc0-b59c-40b7-b0cd-20bb51e26175 (old id 134483)
date added to LUP
2007-07-06 16:50:16
date last changed
2017-03-12 04:11:40
@article{899d2fc0-b59c-40b7-b0cd-20bb51e26175,
  abstract     = {UV-B treatment of thylakoid membranes or fractions derived from them accelerates the first rise (Fo---Fi phase) of variable fluorescence and slows down the second (Fi---Fm) rise. This can be observed for all membrane fractions but to different extents. The grana fraction is affected more by the UV-B treatment than are the intact thylakoids and the stroma lamella fraction. An exogenous electron acceptor, 2,6-dichloro-p-benzoquinone, inhibits both the initial and second rises of the fluorescence induction kinetics including the changes induced by UV-B. However, other electron acceptors, such as 2,5-dimethyl-p-benzoquinone and methyl viologen quench only the second rise of the curve. Oxygen evolution from grana-derived membranes is more sensitive to UV-B treatment than oxygen evolution from stroma lamella-derived membranes.},
  author       = {Yu, Shi-Gui and Björn, Lars Olof},
  issn         = {1011-1344},
  keyword      = {Stroma lamellae,Grana Lamellae,UV-B Sensitivity,Photosystem II},
  language     = {eng},
  number       = {1},
  pages        = {35--38},
  publisher    = {Elsevier},
  series       = {Journal of Photochemistry and Photobiology, B: Biology},
  title        = {Differences in UV-B sensitivity between PSII from grana lamellae and stroma lamellae},
  url          = {http://dx.doi.org/10.1016/1011-1344(95)07243-8},
  volume       = {34},
  year         = {1996},
}