Overexpression of sedoheptulose-1,7-bisphosphatase enhances photosynthesis and growth under salt stress in transgenic rice plants

Functional Plant Biology : FPB
Lingling FengYingguo Zhu

Abstract

Activity of the Calvin cycle enzyme sedoheptulose-1,7-bisphosphatase (SBPase; EC3.1.3.37) was increased in the transgenic rice cultivar zhonghua11 (Oryza sativa L. ssp. japonica) by overexpressing OsSbp cDNA from the rice cultivar 9311 (Oryza sativa ssp. indica). This genetic engineering enabled the transgenic plants to accumulate SBPase in chloroplasts and resulted in enhanced tolerance of transgenic rice plants to salt stress at the young seedlings stage. Moreover, CO2 assimilation in transgenic rice plants was significantly more tolerant to salt stress than in wild-type plants. The analysis of chlorophyll fluorescence and the activity of SBPase indicated that the enhancement of photosynthesis in salt stress was not related to the function of PSII but to the activity of SBPase. Western-blot analysis showed that salt stress led to the association of SBPase with the thylakoid membranes from the stroma fractions. However, this association was much more prominent in wild-type plants than in transgenic plants. Results suggested that under salt stress, SBPase maintained the activation of ribulose-1,5-bisphosphate carboxylase-oxygenase by providing more regeneration of the acceptor molecule ribulose-1,5-bisphosphate in the soluble s...Continue Reading

References

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Citations

Jun 12, 2013·Photosynthesis Research·Jeroni GalmésJaume Flexas
May 10, 2015·Journal of Experimental Botany·Andrew J SimkinChristine A Raines
Nov 21, 2015·Journal of Experimental Botany·Thomas D Sharkey, Sean E Weise
Oct 19, 2017·Plant, Cell & Environment·Stacy D SingerSurya Acharya
Aug 16, 2017·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Steven M DrieverChristine A Raines
Apr 19, 2019·Journal of Experimental Botany·Helena A HerrmannGiles N Johnson
Jun 28, 2011·Critical Reviews in Biotechnology·Cheng-Jiang RuanJaime A Teixeira da Silva
Mar 26, 2016·Frontiers in Plant Science·Bimal PaudelJai S Rohila
Mar 11, 2018·Biochemical Society Transactions·Elmien Heyneke, Alisdair R Fernie
Feb 18, 2019·Journal of Experimental Botany·Andrew J SimkinChristine A Raines
Nov 12, 2018·Journal of Integrative Plant Biology·Pan LiXin-Guang Zhu
Dec 19, 2018·International Journal of Molecular Sciences·Fei DingShuoxin Zhang
Oct 21, 2017·International Journal of Molecular Sciences·Xiaoli WangShaojun Dai
Nov 23, 2018·International Journal of Molecular Sciences·Fei DingShuoxin Zhang
Dec 29, 2020·Plant Communications·Willian Batista-SilvaWagner L Araújo
Jul 5, 2021·Plant Physiology and Biochemistry : PPB·Samar G ThabetAhmad M Alqudah
Oct 1, 2021·Plant Cell Reports·Vivek VermaPrakash P Kumar

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