title: Prompt chlorophyll a fluorescence as a rapid tool for diagnostic changes in PSII structure inhibited by salt stress in Perennial ryegrass.
abstract: Perennial ryegrass (Lolium perenne L.) is one of the most popular grass species in Europe. It is commonly used for establishing the lawns in urban areas, where the salt stress is one of the major environmental conditions limiting its growth. The basic aim of this study was the detailed in vivo analysis of the changes in photosynthetic efficiency, induced by salt stress, of two lawn varieties of Perennial ryegrass and to find out the variety of better properties to create lawn on the soils contaminated with salt. Two lawn varieties of L. perenne L. were used: Nira and Roadrunner. The salinization was applied 8 weeks after sowing by adding NaCl in water solution (0, 0.15, and 0.30 M). The measurements were carried out 8 times: 0, 24, 48, 96, 144, 192, 240 and 288 h after salinization. Our results revealed that the disturbance of PSII function could easily be estimated by measuring chlorophyll a fluorescence and analyzing that signal by JIP-test. Our work allowed to identify various limiting parameters of photosynthetic efficiency of perennial ryegrass lawn varieties grown under salt stress conditions. This knowledge can allow for selection of plants with a higher potential photosynthetic efficiency (vitality) during salt stress conditions, that can be used successfully neighboring roads, where salt is applied.
authors.affiliation: Department of Environmental Improvement, Warsaw University of Life Science, 159 Nowoursynowska St., 02-776 Warsaw, Poland.
authors.forename: P
authors.initials: P
authors.lastname: Dąbrowski
authors.affiliation: Polish Academy of Sciences Botanical Garden-Center for Biological Diversity Conservation in Powsin, 2 Prawdziwka St., 02-973 Warsaw, Poland.
authors.forename: A H
authors.initials: AH
authors.lastname: Baczewska
authors.affiliation: Department of Environmental Improvement, Warsaw University of Life Science, 159 Nowoursynowska St., 02-776 Warsaw, Poland.
authors.forename: B
authors.initials: B
authors.lastname: Pawluśkiewicz
authors.affiliation: Department of Biophysics and Radiobiology, University of Sofia "St. Kliment Ohridski", 1164 Sofia, Bulgaria.
authors.forename: M
authors.initials: M
authors.lastname: Paunov
authors.affiliation: Department of Biophysics and Radiobiology, University of Sofia "St. Kliment Ohridski", 1164 Sofia, Bulgaria.
authors.forename: V
authors.initials: V
authors.lastname: Alexantrov
authors.affiliation: Department of Biophysics and Radiobiology, University of Sofia "St. Kliment Ohridski", 1164 Sofia, Bulgaria.
authors.forename: V
authors.initials: V
authors.lastname: Goltsev
authors.affiliation: Department of Plant Physiology, Warsaw University of Life Science, 159 Nowoursynowska St., 02-776 Warsaw, Poland. Electronic address: hazem@kalaji.pl.
authors.forename: M H
authors.initials: MH
authors.lastname: Kalaji
mesh_terms: D002734:Chlorophyll / Q000378:metabolism*; D000077194:Chlorophyll A; D005453:Fluorescence; D045332:Photosystem II Protein Complex / Q000737:chemistry / Q000378:metabolism*; D006109:Poaceae / Q000378:metabolism*; D011487:Protein Conformation; D012492:Salts; D013312:Stress, Physiological
chemical_list: D045332:Photosystem II Protein Complex; D012492:Salts; D002734:Chlorophyll; D000077194:Chlorophyll A
keywords: Abiotic stress; Chlorophyll; Grasses; JIP-test; Lawn varieties; Photosynthesis