biologia plantarum

International journal on Plant Life established by Bohumil Nìmec in 1959

Biologia plantarum 43:471-475, 2000 | DOI: 10.1023/A:1026712426180

Effect of Glycinebetaine on Chloroplast Ultrastructure, Chlorophyll and Protein Content, and RuBPCO Activities in Tomato Grown under Drought or Salinity

P. Mäkelä1,*, J. Kärkkäinen1, S. Somersalo1
1 Department of Plant Production, University of Helsinki, Helsinki, Finland e-mail

The effect of foliar-applied glycinebetaine (GB) on chloroplast ultrastructure, the amount of chlorophyll and proteins and ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBPCO) activity in stressed tomato leaves were analysed. Initial, and total activity and activation state state of RuBPCO were also measured. RuBPCO activities, chloroplast area, and the number of plastoglobuli remained unaffected, while the relative area of starch granules increased in GB-treated, salt-stressed tomato leaflets. Under drought-stress, the relative area of plastoglobuli increased upon GB application. The primary effect of GB was, however, the increased protein and chlorophyll content.

Keywords: Lycopersicon esculentum; plastoglobuli; starch granules
Subjects: chlorophyll, drought, salinity; chloroplast ultrastructure, drought, salinity; glycinebetaine, drought, salinity; Lycopersicon esculentum; plastoglobuli, drought, salinity; protein, drought, salinity; ribulose-1,5-bisphosphate carboxylase/oxygenase, drought, salinity; tomato, drought, salinity

Published: September 1, 2000  Show citation

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Mäkelä, P., Kärkkäinen, J., & Somersalo, S. (2000). Effect of Glycinebetaine on Chloroplast Ultrastructure, Chlorophyll and Protein Content, and RuBPCO Activities in Tomato Grown under Drought or Salinity. Biologia plantarum, 43(3), 471-475. doi: 10.1023/A:1026712426180
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