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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 orcid (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
and
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
2016-04-01 16:40:09
date last changed
2025-10-14 12:36:27
@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}},
  keywords     = {{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}},
  doi          = {{10.1016/1011-1344(95)07243-8}},
  volume       = {{34}},
  year         = {{1996}},
}