Mineral nutrition of C4 plants
Final Report Abstract
The evolution of C4 photosynthesis led to an increase in carbon assimilation rates and plant growth compared to C3 photosynthetic plants. This enhanced plant growth affects the requirement for soil-derived mineral nutrients. However, mineral plant nutrition has scarcely been considered in connection with C4 photosynthesis. By analysing species of the genus Flaveria with different photosynthesis types, we have previously shown differences in accumulation of sulfur compounds and allocation of phosphate between C3 and C4 species. In this project we we provide evidence that evolution of C4 photosynthesis is connected with a large number of alterations in mineral nutrient homeostasis across diverse C3 and C4 genera. We have revealed that C4 plants are more sensitive to phosphate limitation, but more tolerant to the limitation of nitrogen. The C4 plants are also less able to use ammonium as nitrogen source. Thus, for engineering of C4 photosynthesis it is necessary to take into account also mineral nutrition and homeostasis of the main nutrients, nitrogen, phosphorus, and sulfur.
Publications
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Unique features of regulation of sulfate assimilation in monocots. Journal of Experimental Botany, 74(1), 308-320.
Rahimzadeh, Karvansara Parisa; Kelly, Ciaran; Krone, Raissa; Zenzen, Ivan; Ristova, Daniela; Silz, Emely; Jobe, Timothy O. & Kopriva, Stanislav
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Impact of evolution of C4 photosynthesis on N nutrition. 2023 PhD Thesis, University of Cologne
Losemann E.
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Transcriptional and metabolic profiling of sulfur starvation response in two monocots. BMC Plant Biology, 24(1).
Zenzen, Ivan; Cassol, Daniela; Westhoff, Philipp; Kopriva, Stanislav & Ristova, Daniela
