The role of the sink tissue in variegated Pelargonium zonale under excess excitation energy pressure morphologic, photosynthetic and metabolic study
Authors
Milić, DejanaPantelić, Ana
Banović Đeri, Bojana
Samardžić, Jelena
Vidović, Marija
Contributors
Milutinović, MilicaConference object (Published version)
Metadata
Show full item recordAbstract
In the global warming era, we are facing extreme changes in environmental conditions such
as high and low temperatures, high light and ultraviolet radiation intensity, as well as drought
and increased CO2 levels. The effects of these factors on plants are often interrelated and usually
result in a disturbed balance between the amount of energy received and the ability to process
it. In order to balance energy input and prevent photooxidative damage, plants have evolved
multiple mechanisms for energy dissipation and photoprotection. To efficiently dissipate the excess
excitation energy (EEE), the additional electron sinks, such as photorespiration, biosynthesis
of phenolics and nitrate reduction are stimulated. Variegated leaves of Pelargonium zonale have
been proven to be a suitable model system for examining ‘source–sink’ interactions within the
same leaf, providing the same microenvironment conditions, unlike common root-shoot studies.
The aim of our study was to investigat...e carbon and nitrogen reallocation between photosynthetically
active (green leaf sectors) and photosynthetically inactive (white leaf sectors) under EEE
pressure induced by low temperature in combination with high light intensity. Besides the amino
acids and phenolics analyses, we monitored morphological and photosynthetic parameters of
P. zonale leaves. Our results revealed higher content of free proteogenic amino acids in the white
leaf sectors than in the green ones. Moreover, EEE triggered increased polyphenol synthesis, namely
anthocyanins, already on the fourth day of the experiment. Also, the leaf fresh/dry weight (FW/
DW) ratio was significantly lower in plants exposed to EEE, indicating possible cell wall stiffening.
Keywords:
amino acids / anthocyanins / high light intensity / ‘source–sink’ interactions / variegated plantsSource:
4th International Conference on Plant Biology and 23rd SPPS Meeting, 2022, 2022, 66-Publisher:
- Serbian Plant Physiology Society Institute for Biological Research “Siniša Stanković” – National Institute of Republic of Serbia, University of Belgrade Faculty of Biology, University of Belgrade
Funding / projects:
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200042 (University of Belgrade, Institute of Molecular Genetics and Genetic Engineering) (RS-MESTD-inst-2020-200042)
Note:
- Book of Abstracts: 4th International Conference on Plant Biology and 23rd SPPS Meeting, 6-8 October 2022, Belgrade
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Institution/Community
Institut za molekularnu genetiku i genetičko inženjerstvoTY - CONF AU - Milić, Dejana AU - Pantelić, Ana AU - Banović Đeri, Bojana AU - Samardžić, Jelena AU - Vidović, Marija PY - 2022 UR - https://imagine.imgge.bg.ac.rs/handle/123456789/1848 AB - In the global warming era, we are facing extreme changes in environmental conditions such as high and low temperatures, high light and ultraviolet radiation intensity, as well as drought and increased CO2 levels. The effects of these factors on plants are often interrelated and usually result in a disturbed balance between the amount of energy received and the ability to process it. In order to balance energy input and prevent photooxidative damage, plants have evolved multiple mechanisms for energy dissipation and photoprotection. To efficiently dissipate the excess excitation energy (EEE), the additional electron sinks, such as photorespiration, biosynthesis of phenolics and nitrate reduction are stimulated. Variegated leaves of Pelargonium zonale have been proven to be a suitable model system for examining ‘source–sink’ interactions within the same leaf, providing the same microenvironment conditions, unlike common root-shoot studies. The aim of our study was to investigate carbon and nitrogen reallocation between photosynthetically active (green leaf sectors) and photosynthetically inactive (white leaf sectors) under EEE pressure induced by low temperature in combination with high light intensity. Besides the amino acids and phenolics analyses, we monitored morphological and photosynthetic parameters of P. zonale leaves. Our results revealed higher content of free proteogenic amino acids in the white leaf sectors than in the green ones. Moreover, EEE triggered increased polyphenol synthesis, namely anthocyanins, already on the fourth day of the experiment. Also, the leaf fresh/dry weight (FW/ DW) ratio was significantly lower in plants exposed to EEE, indicating possible cell wall stiffening. PB - Serbian Plant Physiology Society Institute for Biological Research “Siniša Stanković” – National Institute of Republic of Serbia, University of Belgrade Faculty of Biology, University of Belgrade C3 - 4th International Conference on Plant Biology and 23rd SPPS Meeting, 2022 T1 - The role of the sink tissue in variegated Pelargonium zonale under excess excitation energy pressure morphologic, photosynthetic and metabolic study SP - 66 UR - https://hdl.handle.net/21.15107/rcub_imagine_1848 ER -
@conference{ author = "Milić, Dejana and Pantelić, Ana and Banović Đeri, Bojana and Samardžić, Jelena and Vidović, Marija", year = "2022", abstract = "In the global warming era, we are facing extreme changes in environmental conditions such as high and low temperatures, high light and ultraviolet radiation intensity, as well as drought and increased CO2 levels. The effects of these factors on plants are often interrelated and usually result in a disturbed balance between the amount of energy received and the ability to process it. In order to balance energy input and prevent photooxidative damage, plants have evolved multiple mechanisms for energy dissipation and photoprotection. To efficiently dissipate the excess excitation energy (EEE), the additional electron sinks, such as photorespiration, biosynthesis of phenolics and nitrate reduction are stimulated. Variegated leaves of Pelargonium zonale have been proven to be a suitable model system for examining ‘source–sink’ interactions within the same leaf, providing the same microenvironment conditions, unlike common root-shoot studies. The aim of our study was to investigate carbon and nitrogen reallocation between photosynthetically active (green leaf sectors) and photosynthetically inactive (white leaf sectors) under EEE pressure induced by low temperature in combination with high light intensity. Besides the amino acids and phenolics analyses, we monitored morphological and photosynthetic parameters of P. zonale leaves. Our results revealed higher content of free proteogenic amino acids in the white leaf sectors than in the green ones. Moreover, EEE triggered increased polyphenol synthesis, namely anthocyanins, already on the fourth day of the experiment. Also, the leaf fresh/dry weight (FW/ DW) ratio was significantly lower in plants exposed to EEE, indicating possible cell wall stiffening.", publisher = "Serbian Plant Physiology Society Institute for Biological Research “Siniša Stanković” – National Institute of Republic of Serbia, University of Belgrade Faculty of Biology, University of Belgrade", journal = "4th International Conference on Plant Biology and 23rd SPPS Meeting, 2022", title = "The role of the sink tissue in variegated Pelargonium zonale under excess excitation energy pressure morphologic, photosynthetic and metabolic study", pages = "66", url = "https://hdl.handle.net/21.15107/rcub_imagine_1848" }
Milić, D., Pantelić, A., Banović Đeri, B., Samardžić, J.,& Vidović, M.. (2022). The role of the sink tissue in variegated Pelargonium zonale under excess excitation energy pressure morphologic, photosynthetic and metabolic study. in 4th International Conference on Plant Biology and 23rd SPPS Meeting, 2022 Serbian Plant Physiology Society Institute for Biological Research “Siniša Stanković” – National Institute of Republic of Serbia, University of Belgrade Faculty of Biology, University of Belgrade., 66. https://hdl.handle.net/21.15107/rcub_imagine_1848
Milić D, Pantelić A, Banović Đeri B, Samardžić J, Vidović M. The role of the sink tissue in variegated Pelargonium zonale under excess excitation energy pressure morphologic, photosynthetic and metabolic study. in 4th International Conference on Plant Biology and 23rd SPPS Meeting, 2022. 2022;:66. https://hdl.handle.net/21.15107/rcub_imagine_1848 .
Milić, Dejana, Pantelić, Ana, Banović Đeri, Bojana, Samardžić, Jelena, Vidović, Marija, "The role of the sink tissue in variegated Pelargonium zonale under excess excitation energy pressure morphologic, photosynthetic and metabolic study" in 4th International Conference on Plant Biology and 23rd SPPS Meeting, 2022 (2022):66, https://hdl.handle.net/21.15107/rcub_imagine_1848 .