Diverse Stomatal Behaviors Mediating Photosynthetic Acclimation to Low Temperatures in Hordeum vulgare

Barbara Jurczyk , Maciej Grzesiak , Ewa Pociecha , Magdalena Wlazło , Marcin Rapacz

Abstract

Photosynthetic acclimation to cold conditions is an important factor influencing freezing tolerance of plants. Photosynthetic enzyme activities increase as part of a photochemical mechanism underlying photosynthetic acclimation to low temperatures. Additionally, a non-photochemical mechanism may be activated to minimize photooxidative damage. The aim of this study was to test the hypothesis that differences in stomatal conductance in Hordeum vulgare plants with contrasting freezing tolerances induce various strategies for photosynthetic acclimation to cold stress. Different stomatal behaviors during the prehardening step resulted in diverse plant reactions to low-temperature stress. Plants with a relatively low freezing tolerance exhibited decreased stomatal conductance, resulting in decreased photochemical activity, faster induction of the non-photochemical mechanism, and downregulated expression of two Rubisco activase (RcaA) splicing variants. In contrast, plants with a relatively high freezing tolerance that underwent a prehardening step maintained the stomatal conductance at control level and exhibited delayed photochemical activity and RcaA expression decrease, and increased Rubisco activity, which increased net photosynthetic rate. Thus, in barley, the induction of photoinhibition avoidance (i.e., non-photochemical photoacclimation mechanism) is insufficient for an effective cold acclimation. An increase in cold-induced net photosynthetic rate due to open stomata is also necessary.
Author Barbara Jurczyk (FoAE / DoPP)
Barbara Jurczyk,,
- Department of Plant Physiology
, Maciej Grzesiak
Maciej Grzesiak,,
-
, Ewa Pociecha (FoAaE / DoPP)
Ewa Pociecha,,
- Department of Plant Physiology
, Magdalena Wlazło (FoAaE / DoPP)
Magdalena Wlazło,,
- Department of Plant Physiology
, Marcin Rapacz (FoAE / DoPP)
Marcin Rapacz,,
- Department of Plant Physiology
Journal seriesFrontiers in Plant Science, ISSN 1664-462X, (N/A 100 pkt)
Issue year2019
Vol9
No1963
Pages1-10
Publication size in sheets0.5
Keywords in Englishchlorophyll fluorescence, cold acclimation, prehardening, Rubisco activase, stomatal conductance
ASJC Classification1110 Plant Science
DOIDOI:10.3389/fpls.2018.01963
URL https://fjfsdata01prod.blob.core.windows.net/articles/files/419209/pubmed-zip/.versions/1/.package-entries/fpls-09-01963/fpls-09-01963.pdf?sv=2015-12-11&sr=b&sig=ztLJ%2FpmisZH26JpBxHjYZYtt4ldBQub6ZywcTsZyv1k%3D&se=2019-03-27T10%3A28%3A56Z&sp=r&rscd=attachment%3B%20filename%2A%3DUTF-8%27%27fpls-09-01963.pdf
Internal identifierWRE/2019/22
Languageen angielski
Score (nominal)100
Score sourcejournalList
Publication indicators WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 1.328; WoS Impact Factor: 2018 = 4.106 (2) - 2018=4.855 (5)
Citation count*
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FinansowanieThe study was supported by the project, “The role of alternate mRNA splicing of Rubisco activase gene in acclimation of photosynthetic apparatus to cold” (DEC-2011/03/B/NZ2/00536), which was financed by the Polish National Research Centre. The funding source provided only financial support and was not involved in the design or completion of the experiments. Manuscript writing and publication was supported by the Ministry of Science and Higher Education (Poland) within the framework of subsidies for maintenance of research potential granted to the Faculty of Agriculture and Economics of the Agricultural University in Kraków.
Udział procentowyBarbara Jurczyk 70%, Maciej Grzesiak 10%, Ewa Pociecha 5%, Magdalena Wlazło 5%, Marcin Rapacz 10%
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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