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Stem Photosynthesis-A Key Element of Grass Pea (Lathyrus sativus L.) Acclimatisation to Salinity
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SYSNO ASEP 0542707 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Stem Photosynthesis-A Key Element of Grass Pea (Lathyrus sativus L.) Acclimatisation to Salinity Author(s) Tokarz, K. M. (PL)
Wesolowski, W. (PL)
Tokarz, B. (PL)
Makowski, W. (PL)
Wysocka, Anna (MBU-M)
Jedrzejczyk, R. J. (PL)
Chrabaszcz, K. (PL)
Malek, K. (PL)
Kostecka-Gugala, A. (PL)Article number 685 Source Title International Journal of Molecular Sciences. - : MDPI
Roč. 22, č. 2 (2021)Number of pages 33 s. Language eng - English Country CH - Switzerland Keywords Lathyrus sativus ; cyclic electron transport ; linear electron transport ; photosynthetic apparatus ; photosystem I ; photosystem II ; ros ; salt stress Subject RIV CE - Biochemistry OECD category Biochemistry and molecular biology Method of publishing Open access Institutional support MBU-M - RVO:61388971 UT WOS 000611895800001 EID SCOPUS 85099420621 DOI 10.3390/ijms22020685 Annotation Grass pea (Lathyrus sativus) is a leguminous plant of outstanding tolerance to abiotic stress. The aim of the presented study was to describe the mechanism of grass pea (Lathyrus sativus L.) photosynthetic apparatus acclimatisation strategies to salinity stress. The seedlings were cultivated in a hydroponic system in media containing various concentrations of NaCl (0, 50, and 100 mM), imitating none, moderate, and severe salinity, respectively, for three weeks. In order to characterise the function and structure of the photosynthetic apparatus, Chl a fluorescence, gas exchange measurements, proteome analysis, and Fourier-transform infrared spectroscopy (FT-IR) analysis were done inter alia. Significant differences in the response of the leaf and stem photosynthetic apparatus to severe salt stress were observed. Leaves became the place of harmful ion (Na+) accumulation, and the efficiency of their carboxylation decreased sharply. In turn, in stems, the reconstruction of the photosynthetic apparatus (antenna and photosystem complexes) activated alternative electron transport pathways, leading to effective ATP synthesis, which is required for the efficient translocation of Na+ to leaves. These changes enabled efficient stem carboxylation and made them the main source of assimilates. The observed changes indicate the high plasticity of grass pea photosynthetic apparatus, providing an effective mechanism of tolerance to salinity stress. Workplace Institute of Microbiology Contact Eliška Spurná, eliska.spurna@biomed.cas.cz, Tel.: 241 062 231 Year of Publishing 2022 Electronic address https://www.mdpi.com/1422-0067/22/2/685
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