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HERO ID
3844787
Reference Type
Journal Article
Title
Variation in growth rate, carbon assimilation, and photosynthetic efficiency in response to nitrogen source and concentration in phytoplankton isolated from upper San Francisco Bay
Author(s)
Berg, GM; Driscoll, S; Hayashi, K; Ross, M; Kudela, R
Year
2017
Is Peer Reviewed?
Yes
Journal
Journal of Phycology
ISSN:
0022-3646
EISSN:
1529-8817
Volume
53
Issue
3
Page Numbers
664-679
Language
English
PMID
28328165
DOI
10.1111/jpy.12535
Web of Science Id
WOS:000402675300017
Abstract
Six species of phytoplankton recently isolated from upper San Francisco Bay were tested for their sensitivity to growth inhibition by ammonium (NH4(+) ), and for differences in growth rates according to inorganic nitrogen (N) growth source. The quantum yield of photosystem II (Fv /Fm ) was a sensitive indicator of NH4(+) toxicity, manifested by a suppression of Fv /Fm in a dose-dependent manner. Two chlorophytes were the least sensitive to NH4(+) inhibition, at concentrations of >3,000 μmoles NH4(+) · L(-1) , followed by two estuarine diatoms that were sensitive at concentrations >1,000 μmoles NH4(+) · L(-1) , followed lastly by two freshwater diatoms that were sensitive at concentrations between 200 and 500 μmoles NH4(+) · L(-1) . At non-inhibiting concentrations of NH4(+) , the freshwater diatom species grew fastest, followed by the estuarine diatoms, while the chlorophytes grew slowest. Variations in growth rates with N source did not follow taxonomic divisions. Of the two chlorophytes, one grew significantly faster on nitrate (NO3(-) ), whereas the other grew significantly faster on NH4(+) . All four diatoms tested grew faster on NH4(+) compared with NO3(-) . We showed that in cases where growth rates were faster on NH4(+) than they were on NO3(-) , the difference was not larger for chlorophytes compared with diatoms. This holds true for comparisons across a number of culture investigations suggesting that diatoms as a group will not be at a competitive disadvantage under natural conditions when NH4(+) dominates the total N pool and they will also not have a growth advantage when NO3(-) is dominant, as long as N concentrations are sufficient.
Tags
IRIS
•
Nitrate/Nitrite
Broad LitSearch 2016/1/1 - 2017/12/5
Refs found by LitSearch but not ATSDR/IARC
PubMed
WoS
Refs found only by 2017 LitSearch or Citation Mapping
Ref Types 12/2017
All Others
LitSearch Update 2016-2017
PubMed
WoS
NAAQS
•
ISA NOxSOxPM Ecology (2018)
Cited in the Second Draft
Appendix 10
•
ISA NOxSOxPM Ecology (2020- Final Project Page)
Cited
Appendix 10
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