Computational analysis of the oscillatory dynamics in the processes of CO2 assimilation and photorespiration

被引：7

作者：

Dubinsky, Andrey Yu. ^{[2
]}

Ivlev, Alexander A. ^{[1
]}

机构：

[1] Russian State Agrarian Univ, Moscow Timiryazev Agr Acad, Moscow 127550, Russia

[2] Russian Acad Sci, Inst Geosphere Dynam, Moscow 119334, Russia

来源：

BIOSYSTEMS | 2011年 / 103卷 / 02期

关键词：

Photosynthesis; Rubisco carboxylase and oxygenase phases; Computational modeling; Sustained oscillations; PHOTOSYNTHESIS; LEAVES; METABOLISM; RUBISCO; LIGHT; TRANSITION; MECHANISM; CATALYSIS; FIXATION; CARBON;

D O I：

10.1016/j.biosystems.2010.11.003

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The computational analysis of the model system consisting of the processes of CO2 assimilation and photorespiration shows the appearance of sustained oscillations in the system which might reflect their presence in photosynthesizing cells. Concentrations of CO2 and O-2 oscillate in opposite phases causing Rubisco switching continuously between the carboxylase (CO2 assimilation) and the oxygenase (photorespiration) reactions. The results of modeling are consistent with carbon isotopic and other observed data. They show that the oscillation period varies from about 1 s to 3 s depending on the values of parameters taken. Too high concentrations of O-2 suppress the oscillations. (C) 2010 Elsevier Ireland Ltd. All rights reserved.

引用

页码：285 / 290

页数：6

共 29 条

[1]

Chernayskaya N.M., 1961, SOV PHYS USP, V4, P850, DOI DOI 10.1070/PU1961V003N06ABEH003293

[2]

Dubinsky A.Yu., 2010, Biophysics (Moscow), P55, DOI [10.1134/S0006350910010094, DOI 10.1134/S0006350910010094]

[3]

EDWARDS G., 1983, C Three C Four: Mechanisms, Cellular and Environmental Regulation of Photosynthesis

[4] ON THE FUNCTION OF MITOCHONDRIAL METABOLISM DURING PHOTOSYNTHESIS IN SPINACH (SPINACIA-OLERACEA L) LEAVES - PARTITIONING BETWEEN RESPIRATION AND EXPORT OF REDOX EQUIVALENTS AND PRECURSORS FOR NITRATE ASSIMILATION PRODUCTS [J].

HANNING, I ;

HELDT, HW .

PLANT PHYSIOLOGY, 1993, 103 (04) :1147-1154

[5] Function of mitochondria during the transition of barley protoplasts from low light to high light [J].

Igamberdiev, Abir U. ;

Shen, Tongyun ;

Gardestrom, Per .

PLANTA, 2006, 224 (01) :196-204

[6] Oscillatory character of carbon metabolism in photosynthesis: Arguments and facts [J].

Ivlev, A. A. .

BIOLOGY BULLETIN, 2010, 37 (03) :211-220

[7]

Ivlev A.A., 2004, Biophysics, V49, P3

[8]

Ivlev AA, 2003, NATO SCI SER II MATH, V129, P269

[9]

IVLEV AA, 1993, RUSS J PLANT PHYSL+, V40, P752

[10]

IVLEV AA, 2008, ISOTOPE FRACTIONATIO, P1

← 1 2 3 →