A reversible decrease in ribulose 1,5-bisphosphate carboxylase/oxygenase carboxylation activity caused by the aggregation of the enzyme's large subunit is triggered in response to the exposure of moderate irradiance-grown plants to low irradiance
Authors:
- Magda Grabsztunowicz,
- Zbigniew Górski,
- Robert Tadeusz Luciński,
- Grzegorz Jackowski
Abstract
Ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) is highly regulated in response to fluctuations in the environment, including changes in irradiance. However, no complex data are available on Rubisco regulatory mechanisms triggered in plants which are submitted to moderate-low irradiance shift. Therefore, we investigated in a comprehensive way the changes at the level of amount of Rubisco protein, its structural organization and carboxylase activity of the holoenzyme as triggered by exposure of moderate irradiance-grown Arabidopsis thaliana plants to low irradiance conditions. An exposure of moderate irradiance-grown plants to low irradiance for a single photoperiod caused the exclusion of a certain pool of Rubisco under altered conditions owing to oxidative modifications resulting in the formation of protein aggregates involving Rubisco large subunit (LS). As a result, both initial and total Rubisco carboxylase activities were reduced, whereas Rubisco activation state remained largely unchanged. The results of the determination of reactive oxygen species indicated that a moderate/low irradiance transition had stimulated 1O
- Record ID
- UAMfeb1b4e84914401ba34e03d0635f3cac
- Author
- Journal series
- Physiologia Plantarum, ISSN 0031-9317
- Issue year
- 2015
- Vol
- 154
- Pages
- 591-608
- ASJC Classification
- ; ; ; ;
- DOI
- DOI:10.1111/ppl.12322 Opening in a new tab
- Language
- (en) English
- Score (nominal)
- 40
- Score source
- journalList
- Score
- Publication indicators
- = 2; = 6; : 2015 = 1.175; : 2015 (2 years) = 3.520 - 2015 (5 years) =3.799
- Uniform Resource Identifier
- https://researchportal.amu.edu.pl/info/article/UAMfeb1b4e84914401ba34e03d0635f3cac/
- URN
urn:amu-prod:UAMfeb1b4e84914401ba34e03d0635f3cac
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or PerishOpening in a new tab system.