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A remarkable constancy in the relative amount of stroma lamellae of chloroplasts from plants, and its functional significance

Albertsson, Per-Åke LU (2001) In PS2001 Proceedings
Abstract
A model is presented which gives a quantitative picture of the distribution of the photosynthetic components in the thylakoid membrane of higher plants. The model is based on fragmentation and separation analysis together with microscopy. A salient feature of the model is that over 80 per cent of the pigments are located in the grana where the two photosystems 1 and 2 produce oxygen, NADPH and ATP by the linear electron transport pathway while the stroma lamellae, which harbour less than 20 per cent of the pigments, carry out Photosystem 1 mediated cyclic electron transport coupled to ATP production. This arrangement derives from the observation that more pigments are associated with Photosystem 1 which therefore captures more quanta than... (More)
A model is presented which gives a quantitative picture of the distribution of the photosynthetic components in the thylakoid membrane of higher plants. The model is based on fragmentation and separation analysis together with microscopy. A salient feature of the model is that over 80 per cent of the pigments are located in the grana where the two photosystems 1 and 2 produce oxygen, NADPH and ATP by the linear electron transport pathway while the stroma lamellae, which harbour less than 20 per cent of the pigments, carry out Photosystem 1 mediated cyclic electron transport coupled to ATP production. This arrangement derives from the observation that more pigments are associated with Photosystem 1 which therefore captures more quanta than Photosystem 2. The excess pigments associated with Photosystem 1 are suggested to be located in the stroma lamellae. Tentative numbers of the different photosystem and cytochrome b.f. complexes located in the different domains of the thylakoid membrane will be presented. (Less)
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organization
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type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
photosystem I, Chloroplast structure, cyclic electron transport, photosystem II
in
PS2001 Proceedings
publisher
CSIRO Publishing
ISBN
CD-ROM - 0643067116
language
English
LU publication?
yes
id
5858f7bf-69f0-4175-8bf0-14925992d0b8 (old id 527337)
alternative location
http://www.publish.csiro.au/PS2001/cf/search/article.cfm?ID=453066203
date added to LUP
2007-09-12 10:43:34
date last changed
2016-04-16 07:11:22
@misc{5858f7bf-69f0-4175-8bf0-14925992d0b8,
  abstract     = {A model is presented which gives a quantitative picture of the distribution of the photosynthetic components in the thylakoid membrane of higher plants. The model is based on fragmentation and separation analysis together with microscopy. A salient feature of the model is that over 80 per cent of the pigments are located in the grana where the two photosystems 1 and 2 produce oxygen, NADPH and ATP by the linear electron transport pathway while the stroma lamellae, which harbour less than 20 per cent of the pigments, carry out Photosystem 1 mediated cyclic electron transport coupled to ATP production. This arrangement derives from the observation that more pigments are associated with Photosystem 1 which therefore captures more quanta than Photosystem 2. The excess pigments associated with Photosystem 1 are suggested to be located in the stroma lamellae. Tentative numbers of the different photosystem and cytochrome b.f. complexes located in the different domains of the thylakoid membrane will be presented.},
  author       = {Albertsson, Per-Åke},
  isbn         = {CD-ROM - 0643067116},
  keyword      = {photosystem I,Chloroplast structure,cyclic electron transport,photosystem II},
  language     = {eng},
  publisher    = {ARRAY(0xba63518)},
  series       = {PS2001 Proceedings},
  title        = {A remarkable constancy in the relative amount of stroma lamellae of chloroplasts from plants, and its functional significance},
  year         = {2001},
}