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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1111/jpy.12612
|2 doi
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|a pubmed24n0930.xml
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|a (DE-627)NLM279077912
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|a (NLM)29243248
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|a DE-627
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|e rakwb
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|a eng
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| 100 |
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|a Lubsch, Alexander
|e verfasserin
|4 aut
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|a Uptake kinetics and storage capacity of dissolved inorganic phosphorus and corresponding N:P dynamics in Ulva lactuca (Chlorophyta)
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|c 2018
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 09.09.2019
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|a Date Revised 09.09.2019
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2017 Phycological Society of America.
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|a Dissolved inorganic phosphorus (DIP) is an essential macronutrient for maintaining metabolism and growth in autotrophs. Little is known about DIP uptake kinetics and internal P-storage capacity in seaweeds, such as Ulva lactuca (Chlorophyta). Ulva lactuca is a promising candidate for biofiltration purposes and mass commercial cultivation. We exposed U. lactuca to a wide range of DIP concentrations (1-50 μmol · L-1 ) and a nonlimiting concentration of dissolved inorganic nitrogen (DIN; 5,000 μmol · L-1 ) under fully controlled laboratory conditions in a "pulse-and-chase" assay over 10 d. Uptake kinetics were standardized per surface area of U. lactuca fronds. Two phases of responses to DIP-pulses were measured: (i) a surge uptake (VS ) of 0.67 ± 0.10 μmol · cm-2 · d-1 and (ii) a steady state uptake (VM ) of 0.07 ± 0.03 μmol · cm-2 · d-1 . Mean internal storage capacity (ISCP ) of 0.73 ± 0.13 μmol · cm-2 was calculated for DIP. DIP uptake did not affect DIN uptake. Parameters of DIN uptake were also calculated: VS = 12.54 ± 1.90 μmol · cm-2 · d-1 , VM = 2.26 ± 0.86 μmol · cm-2 · d-1 , and ISCN = 22.90 ± 6.99 μmol · cm-2 . Combining ISC and VM values of P and N, nutrient storage capacity of U. lactuca was estimated to be sufficient for ~10 d. Both P and N storage capacities were filled within 2 d when exposed to saturating nutrient concentrations, and uptake rates declined thereafter at 90% for DIP and at 80% for DIN. Our results contribute to understanding the ecological aspects of nutrient uptake kinetics in U. lactuca and quantitatively evaluating its potential for bioremediation and/or biomass production for food, feed, and energy
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|a Journal Article
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|a Ulva lactuca
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|a nitrate uptake
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|a phosphate uptake
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|a storage capacity
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|a uptake kinetics
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|a Phosphorus
|2 NLM
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| 650 |
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|a 27YLU75U4W
|2 NLM
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| 650 |
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|a Nitrogen
|2 NLM
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| 650 |
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|a N762921K75
|2 NLM
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| 700 |
1 |
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|a Timmermans, Klaas
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of phycology
|d 1966
|g 54(2018), 2 vom: 15. Apr., Seite 215-223
|w (DE-627)NLM098182994
|x 1529-8817
|7 nnns
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| 773 |
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|g volume:54
|g year:2018
|g number:2
|g day:15
|g month:04
|g pages:215-223
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|u http://dx.doi.org/10.1111/jpy.12612
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