naa a22 4500 510788416 CHVBK 20180411083310.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s12298-013-0175-5 doi (NATIONALLICENCE)springer-10.1007/s12298-013-0175-5 Chlorophyll fluorescence imaging of photosynthetic activity and pigment contents of the resurrection plants Ramonda serbica and Ramonda nathaliae during dehydration and rehydration [Elektronische Daten] [Bekim Gashi, Fatbardha Babani, Efigjeni Kongjika] The desiccation-tolerant plants of the R. serbica and R. nathaliae are resurrection plants which are able to fully recover their physiological function after anabiosis. A comparison of chlorophyll fluorescence imaging and photosynthetic pigment contents responses of R. serbica and, for the first time, R. nathaliae to dehydration and rehydration were investigated. For this purpose, plants after collection from their natural habitats were kept fully watered for 14days at natural condition. The experiment was conducted with mature leaves of both species. R. serbica and R. nathaliae plants were dehydrated to 5.88% and 7.87% relative water content (RWC) by withholding water for 15days, afterwards the plants were rehydrated for 72hours to 94.67% and 97.02% RWC. During desiccation, R. serbica plants preserved the chlorophyll content about 84%, while R. nathaliae about 90%. During dehydration when RWC were more than 40%, photochemical efficiency of PSII for photochemistry, the Fv/Fm ratio, decreased about 40% in R. nathaliae plants, but a strong reduction with 60% was recorded for R. serbica. Following rehydration, the Fv/Fm ratio recovered more rapidly in R. nathaliae. The higher photosynthetic rates could also be detected via imaging the chlorophyll fluorescence decrease ratio Rfd, which possessed higher values after rehydration leaves of R. nathaliae as compared to R. serbica. The results showed that the photosynthetic activity and chlorophyll contents after rehydration are recovered more rapidly in R. nathaliae in comparison to R. serbica. Prof. H.S. Srivastava Foundation for Science and Society, 2013 Resurrection plants nationallicence Dehydration-rehydration nationallicence Photosynthetic activity nationallicence Chlorophyll fluorescence imaging nationallicence RWC : Relative water content nationallicence Fv / Fm : Maximal photochemical efficiency nationallicence Rfd : Chlorophyll fluorescence decrease ratio nationallicence Gashi Bekim Department of Biology, Faculty of Mathematics and Natural Sciences, University of Pristina, Str. Mother Teresa, n.n., 10000, Prishtina, Kosovo aut Babani Fatbardha Department of Biotechnology, Faculty of Natural Sciences, University of Tirana, Tirana, Albania aut Kongjika Efigjeni Section of Natural and Technical Sciences, Academy of Sciences of Albania, Tirana, Albania aut Physiology and Molecular Biology of Plants Springer India 19/3(2013-07-01), 333-341 0971-5894 19:3<333 2013 19 12298 https://doi.org/10.1007/s12298-013-0175-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12298-013-0175-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Gashi Bekim Department of Biology, Faculty of Mathematics and Natural Sciences, University of Pristina, Str. Mother Teresa, n.n., 10000, Prishtina, Kosovo aut NATIONALLICENCE 700 1- Babani Fatbardha Department of Biotechnology, Faculty of Natural Sciences, University of Tirana, Tirana, Albania aut NATIONALLICENCE 700 1- Kongjika Efigjeni Section of Natural and Technical Sciences, Academy of Sciences of Albania, Tirana, Albania aut NATIONALLICENCE 773 0- Physiology and Molecular Biology of Plants Springer India 19/3(2013-07-01), 333-341 0971-5894 19:3<333 2013 19 12298 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer