Recovery of photosynthetic activity of resurrection plant Haberlea rhodopensis from drought- and freezing-induced desiccation
The recovery of photosynthetic activity during rehydration of Haberlea rhodopensis from drought- and freezing-induced desiccation were investigated. The water uptake during the initial 15 h was slow thus preventing cellular damages. The results showed faster recovery of quantum efficiency of PSII in...
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Academy of Sciences of the Czech Republic, Institute of Experimental Botany
2020-09-01
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doaj-8c999e17ae4a490eb8fb1ce96f65c9652020-11-25T03:18:52ZengAcademy of Sciences of the Czech Republic, Institute of Experimental BotanyPhotosynthetica0300-36041573-90582020-09-0158491192110.32615/ps.2020.044phs-202004-0003Recovery of photosynthetic activity of resurrection plant Haberlea rhodopensis from drought- and freezing-induced desiccationK. GEORGIEVA0G. MIHAILOVA1M. VELITCHKOVA2A. POPOVA3Institute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Acad. G. Bonchev str., Bl. 21, 1113 Sofia, BulgariaInstitute of Plant Physiology and Genetics, Bulgarian Academy of Sciences, Acad. G. Bonchev str., Bl. 21, 1113 Sofia, BulgariaInstitute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Acad. G. Bonchev str., Bl. 21, 1113 Sofia, BulgariaInstitute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Acad. G. Bonchev str., Bl. 21, 1113 Sofia, BulgariaThe recovery of photosynthetic activity during rehydration of Haberlea rhodopensis from drought- and freezing-induced desiccation were investigated. The water uptake during the initial 15 h was slow thus preventing cellular damages. The results showed faster recovery of quantum efficiency of PSII in plants rehydrated after freezing stress (RAF) compared to plants rehydrated after drought stress (RAD) and the most significant differences between them were evident after 9-15 h of rehydration. Following rehydration, PSI activity recovered faster compared to PSII and in contrast to PSII, its activity was higher in RAD compared to RAF plants. During the first hours of rehydration, prominent alterations in energy transfer between photosynthetic complexes occurred as revealed by 77 K fluorescence of isolated thylakoids. High proportion of thermal energy dissipation in dry plants and during the first hours of rehydration protects them from photooxidation; the role of PSII reaction center quenching during the recovery was suggested.https://ps.ueb.cas.cz/artkey/phs-202004-0003_recovery-of-photosynthetic-activity-of-resurrection-plant-haberlea-rhodopensis-from-drought-and-freezing-induc.php77 k fluorescence spectrachlorophyll fluorescencedesiccation tolerance |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
K. GEORGIEVA G. MIHAILOVA M. VELITCHKOVA A. POPOVA |
spellingShingle |
K. GEORGIEVA G. MIHAILOVA M. VELITCHKOVA A. POPOVA Recovery of photosynthetic activity of resurrection plant Haberlea rhodopensis from drought- and freezing-induced desiccation Photosynthetica 77 k fluorescence spectra chlorophyll fluorescence desiccation tolerance |
author_facet |
K. GEORGIEVA G. MIHAILOVA M. VELITCHKOVA A. POPOVA |
author_sort |
K. GEORGIEVA |
title |
Recovery of photosynthetic activity of resurrection plant Haberlea rhodopensis from drought- and freezing-induced desiccation |
title_short |
Recovery of photosynthetic activity of resurrection plant Haberlea rhodopensis from drought- and freezing-induced desiccation |
title_full |
Recovery of photosynthetic activity of resurrection plant Haberlea rhodopensis from drought- and freezing-induced desiccation |
title_fullStr |
Recovery of photosynthetic activity of resurrection plant Haberlea rhodopensis from drought- and freezing-induced desiccation |
title_full_unstemmed |
Recovery of photosynthetic activity of resurrection plant Haberlea rhodopensis from drought- and freezing-induced desiccation |
title_sort |
recovery of photosynthetic activity of resurrection plant haberlea rhodopensis from drought- and freezing-induced desiccation |
publisher |
Academy of Sciences of the Czech Republic, Institute of Experimental Botany |
series |
Photosynthetica |
issn |
0300-3604 1573-9058 |
publishDate |
2020-09-01 |
description |
The recovery of photosynthetic activity during rehydration of Haberlea rhodopensis from drought- and freezing-induced desiccation were investigated. The water uptake during the initial 15 h was slow thus preventing cellular damages. The results showed faster recovery of quantum efficiency of PSII in plants rehydrated after freezing stress (RAF) compared to plants rehydrated after drought stress (RAD) and the most significant differences between them were evident after 9-15 h of rehydration. Following rehydration, PSI activity recovered faster compared to PSII and in contrast to PSII, its activity was higher in RAD compared to RAF plants. During the first hours of rehydration, prominent alterations in energy transfer between photosynthetic complexes occurred as revealed by 77 K fluorescence of isolated thylakoids. High proportion of thermal energy dissipation in dry plants and during the first hours of rehydration protects them from photooxidation; the role of PSII reaction center quenching during the recovery was suggested. |
topic |
77 k fluorescence spectra chlorophyll fluorescence desiccation tolerance |
url |
https://ps.ueb.cas.cz/artkey/phs-202004-0003_recovery-of-photosynthetic-activity-of-resurrection-plant-haberlea-rhodopensis-from-drought-and-freezing-induc.php |
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