Home > Publications database > Molecular iodine emission rates and photosynthetic performance of different thallus parts of Laminaria digitata (Phaeophyceae) during emersion > print

001     20008
005     20240709081714.0
024 7 _ |2 pmid
|a pmid:21188416
024 7 _ |2 DOI
|a 10.1007/s00425-010-1334-3
024 7 _ |2 WOS
|a WOS:000288804000008
037 _ _ |a PreJuSER-20008
041 _ _ |a eng
082 _ _ |a 580
084 _ _ |2 WoS
|a Plant Sciences
100 1 _ |a Nitschke, U.
|b 0
|0 P:(DE-HGF)0
245 _ _ |a Molecular iodine emission rates and photosynthetic performance of different thallus parts of Laminaria digitata (Phaeophyceae) during emersion
260 _ _ |a Berlin
|b Springer
|c 2011
300 _ _ |a 737 - 748
336 7 _ |a Journal Article
|0 PUB:(DE-HGF)16
|2 PUB:(DE-HGF)
336 7 _ |a Output Types/Journal article
|2 DataCite
336 7 _ |a Journal Article
|0 0
|2 EndNote
336 7 _ |a ARTICLE
|2 BibTeX
336 7 _ |a JOURNAL_ARTICLE
|2 ORCID
336 7 _ |a article
|2 DRIVER
440 _ 0 |a Planta
|x 0032-0935
|0 4992
|y 4
|v 233
500 _ _ |3 POF3_Assignment on 2016-02-29
500 _ _ |a The authors thank Professor Colin O'Dowd (School of Physics and Ryan Institute, NUI Galway), Dr. Solene Connan (Botany and Plant Science and Ryan Institute, NUI Galway) and Dr. Stewart Vaughan (School of Chemistry, University of Leeds, UK) for comments on the experimental design and Dr. Jerome Sheahane (Statistics and Applied Mathematics, School of Mathematics, NUI Galway) for his help with statistical analyses. UN and SD gratefully appreciate financial support through the Irish Research Council for Science, Engineering and Technology (IRCSET 'Embark Initiative').
520 _ _ |a The emission of molecular iodine (I(2)) from the stipe, the meristematic area and the distal blade of the brown macroalga Laminaria digitata (Hudson) Lamouroux (Phaeophyceae) was monitored under low light and dark conditions. Photosynthetic parameters were determined to investigate both the extent of stress experienced by different thallus parts and the effects of emersion on photosynthesis. Immediately after air exposure, intense I(2) emission was detectable from all thallus parts. I(2) emission declined continuously over a period of 180 min following the initial burst, but was not affected by the light regime. The total number of mole of I(2) emitted by stipes was approximately 10 times higher than those emitted from other thallus parts. Initial I(2) emission rates (measured within 30 min of exposure to air) were highest for stipes (median values: 2,999 and 5,222 pmol g(-1) dw min(-1) in low light and dark, respectively) and lower, by one order of magnitude, for meristematic regions and distal blades. After exposure to air for between 60 and 180 min, I(2) emission rates of all thallus parts were reduced by 70-80%. Air exposure resulted in a decrease of the maximum photosystem II (PSII) efficiency (F(v)/F(m)) by 3%, and in a 25-55% increase of the effective PSII quantum efficiency (F(v)/F'(m)); this was caused by a higher fraction of open reaction centres (q(P)), whereas the efficiency of the latter in capturing energy (F'(v)/F'(m)) remained constant. The results indicate the presence of an iodine pool which is easily volatilised and depleted due to air exposure, even under apparently low stress conditions.
536 _ _ |a Atmosphäre und Klima
|c P23
|2 G:(DE-HGF)
|0 G:(DE-Juel1)FUEK491
|x 0
588 _ _ |a Dataset connected to Web of Science, Pubmed
650 _ 2 |2 MeSH
|a Air
650 _ 2 |2 MeSH
|a Biomass
650 _ 2 |2 MeSH
|a Iodine: analysis
650 _ 2 |2 MeSH
|a Laminaria: physiology
650 _ 2 |2 MeSH
|a Photosynthesis: physiology
650 _ 2 |2 MeSH
|a Plant Leaves: physiology
650 _ 2 |2 MeSH
|a Time Factors
650 _ 2 |2 MeSH
|a Water
650 _ 7 |0 7553-56-2
|2 NLM Chemicals
|a Iodine
650 _ 7 |0 7732-18-5
|2 NLM Chemicals
|a Water
650 _ 7 |a J
|2 WoSType
653 2 0 |2 Author
|a Emersion
653 2 0 |2 Author
|a Emission rate
653 2 0 |2 Author
|a IBBCEAS
653 2 0 |2 Author
|a Laminaria
653 2 0 |2 Author
|a Molecular iodine
653 2 0 |2 Author
|a Photosynthesis
700 1 _ |a Ruth, A.A.
|b 1
|0 P:(DE-HGF)0
700 1 _ |a Dixneuf, S.
|b 2
|u FZJ
|0 P:(DE-Juel1)VDB83477
700 1 _ |a Stengel, D.B.
|b 3
|0 P:(DE-HGF)0
773 _ _ |a 10.1007/s00425-010-1334-3
|g Vol. 233, p. 737 - 748
|p 737 - 748
|q 233<737 - 748
|0 PERI:(DE-600)1463030-8
|t Planta
|v 233
|y 2011
|x 0032-0935
856 7 _ |u http://dx.doi.org/10.1007/s00425-010-1334-3
909 C O |o oai:juser.fz-juelich.de:20008
|p VDB
|p VDB:Earth_Environment
913 1 _ |k P23
|v Atmosphäre und Klima
|l Atmosphäre und Klima
|b Erde und Umwelt
|z vormals P22
|0 G:(DE-Juel1)FUEK491
|x 0
913 2 _ |a DE-HGF
|b Marine, Küsten- und Polare Systeme
|l Atmosphäre und Klima
|1 G:(DE-HGF)POF3-240
|0 G:(DE-HGF)POF3-249H
|2 G:(DE-HGF)POF3-200
|v Addenda
|x 0
914 1 _ |y 2011
915 _ _ |0 StatID:(DE-HGF)0010
|a JCR/ISI refereed
920 1 _ |k IEK-8
|l Troposphäre
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|0 I:(DE-Juel1)IEK-8-20101013
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970 _ _ |a VDB:(DE-Juel1)135078
980 _ _ |a VDB
980 _ _ |a ConvertedRecord
980 _ _ |a journal
980 _ _ |a I:(DE-Juel1)IEK-8-20101013
980 _ _ |a UNRESTRICTED
981 _ _ |a I:(DE-Juel1)ICE-3-20101013

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