Exposure to nitrogen does not eliminate N-2 fixation in the feather moss Pleurozium schreberi (Brid.) Mitt.
(2014) In Plant and Soil 374(1-2). p.513-521- Abstract
- The feather moss Pleurozium schreberi (Brid.) Mitt. is colonized by cyanobacteria, which fix substantial amounts of atmospheric nitrogen (N) in pristine and N-poor ecosystems. Cyanobacterial N-2 fixation is inhibited by N deposition. However, the threshold of N input that leads to the inhibition of N-2 fixation has not been adequately investigated. Further, the ability of N-2 fixation to recover in mosses from high N deposition areas has not been studied to date. We conducted two laboratory studies in which we (1) applied a range of concentrations of N as NH4NO3 to mosses from low N-deposition areas, and (2) we deprived mosses from a high N-deposition area of N to test their ability to recover N-2 fixation. Higher addition rates (up to 10... (More)
- The feather moss Pleurozium schreberi (Brid.) Mitt. is colonized by cyanobacteria, which fix substantial amounts of atmospheric nitrogen (N) in pristine and N-poor ecosystems. Cyanobacterial N-2 fixation is inhibited by N deposition. However, the threshold of N input that leads to the inhibition of N-2 fixation has not been adequately investigated. Further, the ability of N-2 fixation to recover in mosses from high N deposition areas has not been studied to date. We conducted two laboratory studies in which we (1) applied a range of concentrations of N as NH4NO3 to mosses from low N-deposition areas, and (2) we deprived mosses from a high N-deposition area of N to test their ability to recover N-2 fixation. Higher addition rates (up to 10 kg N ha(-1)) did not systematically inhibit N-2 fixation in P. schreberi. Conversely, upon weeks of N deprivation of mosses from a high N environment, N-2 fixation rates increased. The threshold of total N deposition above which N-2 fixation in P. schreberi is inhibited is likely to be > 10 kg N ha(-1). Further, cyanobacteria are able to recover from high N inputs and are able to fix atmospheric N-2 after a period of N deprivation. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4255907
- author
- Rousk, Kathrin LU ; Jones, Davey L. and DeLuca, Thomas H.
- organization
- publishing date
- 2014
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Boreal forests, Bryophytes, Cyanobacteria, Nitrogenase activity, N, deposition, Symbiosis
- in
- Plant and Soil
- volume
- 374
- issue
- 1-2
- pages
- 513 - 521
- publisher
- Springer
- external identifiers
-
- wos:000328849200039
- scopus:84890861355
- ISSN
- 0032-079X
- DOI
- 10.1007/s11104-013-1908-5
- language
- English
- LU publication?
- yes
- id
- de3acfee-bd95-443a-bdcb-8bd9438665c1 (old id 4255907)
- date added to LUP
- 2016-04-01 14:45:14
- date last changed
- 2022-04-22 05:02:45
@article{de3acfee-bd95-443a-bdcb-8bd9438665c1,
abstract = {{The feather moss Pleurozium schreberi (Brid.) Mitt. is colonized by cyanobacteria, which fix substantial amounts of atmospheric nitrogen (N) in pristine and N-poor ecosystems. Cyanobacterial N-2 fixation is inhibited by N deposition. However, the threshold of N input that leads to the inhibition of N-2 fixation has not been adequately investigated. Further, the ability of N-2 fixation to recover in mosses from high N deposition areas has not been studied to date. We conducted two laboratory studies in which we (1) applied a range of concentrations of N as NH4NO3 to mosses from low N-deposition areas, and (2) we deprived mosses from a high N-deposition area of N to test their ability to recover N-2 fixation. Higher addition rates (up to 10 kg N ha(-1)) did not systematically inhibit N-2 fixation in P. schreberi. Conversely, upon weeks of N deprivation of mosses from a high N environment, N-2 fixation rates increased. The threshold of total N deposition above which N-2 fixation in P. schreberi is inhibited is likely to be > 10 kg N ha(-1). Further, cyanobacteria are able to recover from high N inputs and are able to fix atmospheric N-2 after a period of N deprivation.}},
author = {{Rousk, Kathrin and Jones, Davey L. and DeLuca, Thomas H.}},
issn = {{0032-079X}},
keywords = {{Boreal forests; Bryophytes; Cyanobacteria; Nitrogenase activity; N; deposition; Symbiosis}},
language = {{eng}},
number = {{1-2}},
pages = {{513--521}},
publisher = {{Springer}},
series = {{Plant and Soil}},
title = {{Exposure to nitrogen does not eliminate N-2 fixation in the feather moss Pleurozium schreberi (Brid.) Mitt.}},
url = {{http://dx.doi.org/10.1007/s11104-013-1908-5}},
doi = {{10.1007/s11104-013-1908-5}},
volume = {{374}},
year = {{2014}},
}