Abstract
Non-regulated enzymes in the Calvin cycle are generally presumed to be less important for the regulation of photosynthetic yield. Here, to investigate the relationship between the activity of non-regulated enzymes and photosynthetic yield, two non-regulated enzymes in the Calvin cycle—a rice cytosolic fructose-1,6-bisphosphate aldolase (FBA) and a spinach chloroplast triosephosphate isomerase (TPI)—were cloned and co-expressed in cells of the cyanobacterium Anabaena sp. strain PCC 7120. The activity of FBA and TPI and the photosynthetic yield reflected by photosynthetic O2 evolution and cell dry weight were measured and compared between wild-type and transgenic cells. Our results demonstrated that the activity of FBA and TPI were increased in transgenic cells relative to wild-type cells, and that activity was further increased in a transgenic strain harboring two sets of FBA-TPI tandem genes relative to cells containing one copy of the FBA-TPI tandem gene. The increased activity of FBA and TPI in Anabaena sp. strain PCC 7120 increased photosynthetic yield, with increased activity levels correlating closely with the degree of changes in photosynthetic yield. This implies that the photosynthetic yield is limited by the activity of the non-regulated enzymes FBA and TPI, and that the endogenous activity of non-regulated enzymes is not sufficient to increase photosynthetic yield. We discuss the various roles of FBA and TPI, and regulated and non-regulated enzymes, in modulating photosynthetic yield.
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Abbreviations
- CS:
-
control strain harboring pRL489
- DHAP:
-
dihydroxyacetone phosphate
- FBA:
-
fructose-1,6-bisphosphate aldolase
- FBP:
-
fructose-1,6-bisphosphate
- FBPase:
-
fructose-1,6-bisphosphatase
- G-3-P:
-
d-glyceraldehyde-3-phosphate
- RuBP:
-
ribulose-1,5-bisphosphate
- SBPase:
-
sedoheptulose-1,7-bisphosphatase
- TPI:
-
triosephosphate isomerase
- TS1:
-
transgenic strain harboring pRLFT1
- TS2:
-
transgenic strain harboring pRLFT2
- WT:
-
wild-type
References
Allen MM (1968) Simple conditions for growth of unicellular blue-green algae on plates. J Phycol 4:1–4
Barry GF, Cheikh N, Kishore GM (1998) Expression of fructose-1,6-bisphosphate aldolase in transgenic plants for improved crops with better solids uniformity by improving carbon availability. PCT Int Appl WO 9858069 Al 23 Dec pp77
Cai Y, Wolk CP (1990) Use of a conditionally lethal gene in Anabaena sp. strain PCC 7120 to select for double recombinants and to entrap insertion sequences. J Bacteriol 172:3138–3145
Elhai J, Wolk CP (1988) Conjugal transfer of DNA to cyanobacteria. Methods Enzymol 167:747–754
Fridlyand LE, Scheibe R (1999) Regulation of the Calvin cycle for CO2 fixation as an example for general control mechanisms in metabolic cycles. Biosystems 51:79–93
Haake V, Zrenner R, Sonnerwald U, Stitt M (1998) A moderate decrease of plastid aldolase activity inhibits photosynthesis, alters the levels of sugars and starch, and inhibits growth of potato plants. Plant J 14:147–157
Haake V, Geiger M, Walch-Liu P, Engels C, Zrenner R, Stitt M (1999) Changes in aldolase activity in wild-type potato plants are important for acclimation to growth irradiance and carbon dioxide concentration, because plastid aldolase exerts control over the ambient rate of photosynthesis across a range of growth condition. Plant J 17:479–489
Hartman FC, Harpel MR (1994) Structure, function, regulation and assembly of D-ribulose-1,5-bisphosphate carboxylase oxygenase. Annu Rev Biochem 63:197–234
Kang R, Shi D, Cong W, Ma W, Cai Z, Ouyang F (2005) Effects of co-expression of two higher plants genes ALD and TPI in Anabaena sp. PCC7120 on photosynthetic CO2 fixation. Enzyme Microb Technol 36:600–604
Leegood RC, Sharkey TD, von Caemmerer S (2000) Photosynthesis: physiology and metabolism. Kluwer, Dordrecht, pp 1–8
Lefebvre S, Lawson T, Fryer M, Zakhleniuk OV, Lloyd JC, Raines CA (2005) Increased sedoheptulose-1,7-bisphosphatase activity in transgenic tobacco plants stimulates photosynthesis and growth from an early stage in development. Plant Physiol 138:451–460
Liu F, Zhang H, Shi D, Shang Z, Lin C, Shao N, Peng G, Zhang X, Zhang H, Wu J, Wang J, Xu X, Jiang Y, Zhong Z, Zhao S, Wu M, Zeng C (1999) Construction of shuttle expression vector of human tumor necrosis factor alpha (hTNF-α) gene and its expression in a cyanobacterium, Anabaena sp. PCC 7120. Sci China (Ser C) 42:25–33
Ma W, Shi D, Wang Q, Wei L, Chen H (2005) Exogenous expression of the wheat chloroplastic fructose-1,6-bisphosphatase gene enhances photosynthesis in the transgenic cyanobacterium, Anabaena PCC 7120. J Appl Phycol 17:273–280
Markwell MAK, Haas SM, Bieber LL, Tolbert NE (1978) A modification of the Lowry procedure to simplify protein determination in membrane and lipoprotein samples. Anal Biochem 87:206–210
Miyagawa Y, Tamoi M, Shigeoka S (2001) Overexpression of a cyanobacterial fructose-1,6-/sedoheptulose-1,7-bisphosphatase in tobacco enhances photosynthesis and growth. Nat Biotechnol 19:965–969
Newsholme EA, Start C (1973) Regulation in metabolism. Wiley, London
Richards OC, Rutter WJ (1961) Preparation and properties of yeast aldolase. J Biol Chem 236:3177–3184
Rol JH, Epstein JH, Goldstein NP (1949) A photometric method for the determination of insulin in plasma and urine. J Biol Chem 178:839–845
Sambrook J, Fritsch EF, Maniatis T (1989) Molecular cloning: a laboratory manual, 2nd ed. Cold Spring Harbor Laboratory Press, Cold Spring Harbor, NY
Spreitzer (1993) Genetic dissection of Rubisco structure and function. Annu Rev Plant Phys Plant Mol Biol 44:411–434
Stitt M (1995) The use of transgenic plants to study the regulation of plant carbohydrate metabolism. Aust J Plant Physiol 22:635–646
Stitt M (1996) Metabolic regulation of photosynthesis. In: Baker N (ed) Advances in photosynthesis, vol 3, environmental stress and photosynthesis. Kluwer, Dordrecht, pp 151–190
Tang G, Yang C, Bao J, Wang Y, Chen H, Shi D, Liu F (2001) Co-expression of triosephosphate isomerase, fructose-1, 6-bisphosphate aldolase and fructose-1, 6-bisphosphatase in E. coli. Acta Biochim Biophys Sinica 33:131–136
Vonshak A (1985) Culture methods and biomass produce of algae. In: Coombs J, Hall DO, Long SP, Scurlock JMO (eds) Techniques in bioproductivity and photosynthesis, 2nd edn, vol 15. Pergamon, Oxford, pp 196–211
Acknowledgements
The authors are deeply grateful to Prof. G.L. Tang (Institute of Organic Chemistry, Chinese Academy of Sciences) for providing the pDCFAT plasmid and for fruitful discussion. The authors also thank Prof. C.P. Wolk (Michigan State University) for providing the pRL489, RP4 and pRL623 plasmids.
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W. Ma and L. Wei contributed equally to this work.
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Ma, W., Wei, L., Wang, Q. et al. Increased activity of the non-regulated enzymes fructose-1,6-bisphosphate aldolase and triosephosphate isomerase in Anabaena sp. strain PCC 7120 increases photosynthetic yield. J Appl Phycol 19, 207–213 (2007). https://doi.org/10.1007/s10811-006-9125-8
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DOI: https://doi.org/10.1007/s10811-006-9125-8