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Functional aspects of secondary carotenoids in haematococcus lacustris (volvocales). III. Action as a "sunshade"

Hagen, Christoph; Braune, Wolfram and Björn, Lars Olof LU (1994) In Journal of Phycology 30(2). p.241-248
Abstract
We investigated the protection from photoinhibition by different developmental stages of Haematococcus lacustris [Girod] Rostafinski using chlorophyll fluorescence measurements of single cells and suspensions. An overall correlation between higher cellular content of secondary carotenoids and the capacity to withstand excessive irradiation was observed in flagellated cells and aplanospores of H. lacustris. Low-light-reversible spreading of extra-chloroplastic secondary carotenoids occurred in the periphery of the cell during strong irradiation. This process resulted in increased shading of the cup-shaped chloroplast as demonstrated by a decrease in chlorophyll fluorescence. Extrachloroplastic accumulation of secondary carotenoids in H.... (More)
We investigated the protection from photoinhibition by different developmental stages of Haematococcus lacustris [Girod] Rostafinski using chlorophyll fluorescence measurements of single cells and suspensions. An overall correlation between higher cellular content of secondary carotenoids and the capacity to withstand excessive irradiation was observed in flagellated cells and aplanospores of H. lacustris. Low-light-reversible spreading of extra-chloroplastic secondary carotenoids occurred in the periphery of the cell during strong irradiation. This process resulted in increased shading of the cup-shaped chloroplast as demonstrated by a decrease in chlorophyll fluorescence. Extrachloroplastic accumulation of secondary carotenoids in H. lacustris can be interpreted as a specific adaptation to habitats that exhibit strong insolation. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Phycology
volume
30
issue
2
pages
241 - 248
publisher
Wiley-Blackwell
external identifiers
  • scopus:0028002299
ISSN
0022-3646
DOI
10.1111/j.0022-3646.1994.00241.x
language
English
LU publication?
yes
id
9dbb7008-7169-476f-84b4-bd21a932bf60 (old id 134531)
date added to LUP
2007-07-30 10:22:45
date last changed
2017-07-30 03:48:06
@article{9dbb7008-7169-476f-84b4-bd21a932bf60,
  abstract     = {We investigated the protection from photoinhibition by different developmental stages of Haematococcus lacustris [Girod] Rostafinski using chlorophyll fluorescence measurements of single cells and suspensions. An overall correlation between higher cellular content of secondary carotenoids and the capacity to withstand excessive irradiation was observed in flagellated cells and aplanospores of H. lacustris. Low-light-reversible spreading of extra-chloroplastic secondary carotenoids occurred in the periphery of the cell during strong irradiation. This process resulted in increased shading of the cup-shaped chloroplast as demonstrated by a decrease in chlorophyll fluorescence. Extrachloroplastic accumulation of secondary carotenoids in H. lacustris can be interpreted as a specific adaptation to habitats that exhibit strong insolation.},
  author       = {Hagen, Christoph and Braune, Wolfram and Björn, Lars Olof},
  issn         = {0022-3646},
  language     = {eng},
  number       = {2},
  pages        = {241--248},
  publisher    = {Wiley-Blackwell},
  series       = {Journal of Phycology},
  title        = {Functional aspects of secondary carotenoids in haematococcus lacustris (volvocales). III. Action as a "sunshade"},
  url          = {http://dx.doi.org/10.1111/j.0022-3646.1994.00241.x},
  volume       = {30},
  year         = {1994},
}