Chlorosis during nitrogen starvation is altered by carbon dioxide and temperature status and is mediated by the ClpP1 protease in Synechococcus elongatus
(2005) In Archives of Microbiology 183(1). p.9-66- Abstract
The interactive effects of inorganic carbon status, temperature and light on chlorosis induced by nitrogen deficiency, and the roles of Clp proteases in this process were investigated. In wild-type cultures grown in high or ambient CO(2), following transfer to media lacking combined nitrogen, phycocyanin per cell dropped primarily through dilution of the pigment through cell division, and also suffered variable degrees of net degradation. When grown at high CO(2) (5%), chlorophyll (Chl) suffered net degradation to a greater extent than phycocyanin. In marked contrast, growth at ambient CO(2) resulted in Chl per cell dropping through dilution. Conditions that drove net Chl degradation in the wild-type resulted in little or no net Chl... (More)
The interactive effects of inorganic carbon status, temperature and light on chlorosis induced by nitrogen deficiency, and the roles of Clp proteases in this process were investigated. In wild-type cultures grown in high or ambient CO(2), following transfer to media lacking combined nitrogen, phycocyanin per cell dropped primarily through dilution of the pigment through cell division, and also suffered variable degrees of net degradation. When grown at high CO(2) (5%), chlorophyll (Chl) suffered net degradation to a greater extent than phycocyanin. In marked contrast, growth at ambient CO(2) resulted in Chl per cell dropping through dilution. Conditions that drove net Chl degradation in the wild-type resulted in little or no net Chl degradation in a clpPI inactivation mutant, with Chl content dropping largely through growth dilution in the mutant. The chlorotic response of a clpPII inactivation strain was nearly the same as that of wild-type, although phycocyanin degradation may have been slightly accelerated in the former.
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- author
- Barker-Aström, Kara ; Schelin, Jenny LU ; Gustafsson, Petter ; Clarke, Adrian K and Campbell, Douglas A
- publishing date
- 2005-01
- type
- Contribution to journal
- publication status
- published
- keywords
- Bacterial Proteins/metabolism, Bacteriochlorophylls/metabolism, Carbon Dioxide/metabolism, Endopeptidase Clp/metabolism, Nitrogen Compounds/metabolism, Phycocyanin/analysis, Synechococcus/enzymology
- in
- Archives of Microbiology
- volume
- 183
- issue
- 1
- pages
- 4 pages
- publisher
- Springer
- external identifiers
-
- scopus:12444260639
- pmid:15549267
- ISSN
- 0302-8933
- DOI
- 10.1007/s00203-004-0741-x
- language
- English
- LU publication?
- no
- id
- 728e79c4-1483-4718-b63c-db1af5aea1ca
- date added to LUP
- 2018-06-11 11:56:40
- date last changed
- 2024-07-08 15:14:13
@article{728e79c4-1483-4718-b63c-db1af5aea1ca,
abstract = {{<p>The interactive effects of inorganic carbon status, temperature and light on chlorosis induced by nitrogen deficiency, and the roles of Clp proteases in this process were investigated. In wild-type cultures grown in high or ambient CO(2), following transfer to media lacking combined nitrogen, phycocyanin per cell dropped primarily through dilution of the pigment through cell division, and also suffered variable degrees of net degradation. When grown at high CO(2) (5%), chlorophyll (Chl) suffered net degradation to a greater extent than phycocyanin. In marked contrast, growth at ambient CO(2) resulted in Chl per cell dropping through dilution. Conditions that drove net Chl degradation in the wild-type resulted in little or no net Chl degradation in a clpPI inactivation mutant, with Chl content dropping largely through growth dilution in the mutant. The chlorotic response of a clpPII inactivation strain was nearly the same as that of wild-type, although phycocyanin degradation may have been slightly accelerated in the former.</p>}},
author = {{Barker-Aström, Kara and Schelin, Jenny and Gustafsson, Petter and Clarke, Adrian K and Campbell, Douglas A}},
issn = {{0302-8933}},
keywords = {{Bacterial Proteins/metabolism; Bacteriochlorophylls/metabolism; Carbon Dioxide/metabolism; Endopeptidase Clp/metabolism; Nitrogen Compounds/metabolism; Phycocyanin/analysis; Synechococcus/enzymology}},
language = {{eng}},
number = {{1}},
pages = {{9--66}},
publisher = {{Springer}},
series = {{Archives of Microbiology}},
title = {{Chlorosis during nitrogen starvation is altered by carbon dioxide and temperature status and is mediated by the ClpP1 protease in Synechococcus elongatus}},
url = {{http://dx.doi.org/10.1007/s00203-004-0741-x}},
doi = {{10.1007/s00203-004-0741-x}},
volume = {{183}},
year = {{2005}},
}