دورية أكاديمية
Carbon and Nitrogen Allocation between the Sink and Source Leaf Tissue in Response to the Excess Excitation Energy Conditions
| العنوان: | Carbon and Nitrogen Allocation between the Sink and Source Leaf Tissue in Response to the Excess Excitation Energy Conditions |
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| المؤلفون: | Milić, Dejana, Živanović, Bojana, Samardžić, Jelena, Nikolić, Nenad, Cukier, Caroline, Limami, Anis M., Vidović, Marija |
| المصدر: | International Journal of Molecular Sciences |
| بيانات النشر: | MDPI AG, POSTFACH, BASEL, SWITZERLAND, CH-4005 |
| سنة النشر: | 2023 |
| مصطلحات موضوعية: | 15N nitrate labelling, cell wall, high light intensity, free amino acids, phenolic compounds, Pelargonium zonale, variegated plants |
| الوصف: | Plants are inevitably exposed to extreme climatic conditions that lead to a disturbed balance between the amount of absorbed energy and their ability to process it. Variegated leaves with photosynthetically active green leaf tissue (GL) and photosynthetically inactive white leaf tissue (WL) are an excellent model system to study source–sink interactions within the same leaf under the same microenvironmental conditions. We demonstrated that under excess excitation energy (EEE) conditions (high irradiance and lower temperature), regulated metabolic reprogramming in both leaf tissues allowed an increased consumption of reducing equivalents, as evidenced by preserved maximum efficiency of photosystem II (φPSII) at the end of the experiment. GL of the EEE-treated plants employed two strategies: (i) the accumulation of flavonoid glycosides, especially cyanidin glycosides, as an alternative electron sink, and (ii) cell wall stiffening by cellulose, pectin, and lignin accumulation. On the other hand, WL increased the amount of free amino acids, mainly arginine, asparagine, branched-chain and aromatic amino acids, as well as kaempferol and quercetin glycosides. Thus, WL acts as an important energy escape valve that is required in order to maintain the successful performance of the GL sectors under EEE conditions. Finally, this role could be an adaptive value of variegation, as no consistent conclusions about its ecological benefits have been proposed so far. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| تدمد: | 1422-0067 |
| العلاقة: | info:eu-repo/grantAgreement/MESTD/inst-2020/200042/RS//; info:eu-repo/grantAgreement/MESTD/inst-2020/200053/RS//; http://rimsi.imsi.bg.ac.rs/handle/123456789/2390Test; http://rimsi.imsi.bg.ac.rs/bitstream/id/6221/ijms-24-02269-v2.pdfTest |
| DOI: | 10.3390/ijms24032269 |
| الإتاحة: | https://doi.org/10.3390/ijms24032269Test http://rimsi.imsi.bg.ac.rs/handle/123456789/2390Test http://rimsi.imsi.bg.ac.rs/bitstream/id/6221/ijms-24-02269-v2.pdfTest |
| حقوق: | openAccess ; https://creativecommons.org/licenses/by/4.0Test/ ; BY |
| رقم الانضمام: | edsbas.ADE89D1 |
| قاعدة البيانات: | BASE |
Full Text Finder | تدمد: | 14220067 |
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| DOI: | 10.3390/ijms24032269 |