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- W3048960296 abstract "Macroalgal growth in temperate coastal ecosystems is primarily regulated by light and inorganic nitrogen availability. The effect of light (photon irradiance) on NO3− and NH4+ uptake, and NO3− assimilation, were studied in the red macroalga, Hemineura frondosa, which does not operate a carbon concentrating mechanism (non-CCM). Non-CCM macroalgae grow in low and high light environments but become increasingly dominant with depth, suggesting a mechanism for ‘preserving energy’ under low light levels. H. frondosa was acclimated to limiting (30 µmol photons m−2 s−1) and saturating (150 µmol photons m−2 s–1) irradiances for 8 days. Then, NO3− and NH4+ uptake rates were measured under limiting and saturating irradiances at six concentrations ranging from 2–64 μM. NO3− uptake did not follow saturating uptake kinetics at both irradiances suggesting multiple uptake mechanisms. NH4+ uptake saturated at concentrations <32 µM under limiting but not under saturating irradiance. Saturating irradiance resulted in greater maximum uptake rates of both NO3− and NH4+. There was no evidence that irradiance regulated NO3− reduction by nitrate reductase. Also illustrated is the importance of measuring nitrate reductase activity on fresh material, as freezing in liquid nitrogen and storage at −80°C for 7 days caused a 65% decline in activity. Photosynthetic pigments, soluble tissue nitrogen and % total tissue nitrogen were all higher in limiting irradiance. In this first study of the nitrogen physiology of a non-CCM seaweed, we show that light regulates NO3− and NH4+ uptake but not NO3− assimilation." @default.
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- W3048960296 date "2020-08-11" @default.
- W3048960296 modified "2023-10-16" @default.
- W3048960296 title "Light regulates inorganic nitrogen uptake and storage, but not nitrate assimilation, by the red macroalga <i>Hemineura frondosa</i> (Rhodophyta)" @default.
- W3048960296 cites W1524363389 @default.
- W3048960296 cites W1964380668 @default.
- W3048960296 cites W1966359855 @default.
- W3048960296 cites W1969370355 @default.
- W3048960296 cites W1969756126 @default.
- W3048960296 cites W1971297481 @default.
- W3048960296 cites W1972810154 @default.
- W3048960296 cites W1975417785 @default.
- W3048960296 cites W1979083642 @default.
- W3048960296 cites W1984284483 @default.
- W3048960296 cites W1986413835 @default.
- W3048960296 cites W1988257374 @default.
- W3048960296 cites W1989429474 @default.
- W3048960296 cites W1995144060 @default.
- W3048960296 cites W1995931292 @default.
- W3048960296 cites W1996521945 @default.
- W3048960296 cites W2000743242 @default.
- W3048960296 cites W2009680299 @default.
- W3048960296 cites W2009875903 @default.
- W3048960296 cites W2010334854 @default.
- W3048960296 cites W2010851783 @default.
- W3048960296 cites W2013676162 @default.
- W3048960296 cites W2014645519 @default.
- W3048960296 cites W2016642132 @default.
- W3048960296 cites W2020023009 @default.
- W3048960296 cites W2020301032 @default.
- W3048960296 cites W2021459975 @default.
- W3048960296 cites W2027087651 @default.
- W3048960296 cites W2030652166 @default.
- W3048960296 cites W2030895085 @default.
- W3048960296 cites W2033759162 @default.
- W3048960296 cites W2042373926 @default.
- W3048960296 cites W2043194523 @default.
- W3048960296 cites W2045840271 @default.
- W3048960296 cites W2047272287 @default.
- W3048960296 cites W2047945785 @default.
- W3048960296 cites W2050715433 @default.
- W3048960296 cites W2051686369 @default.
- W3048960296 cites W2053023568 @default.
- W3048960296 cites W2056244855 @default.
- W3048960296 cites W2057943667 @default.
- W3048960296 cites W2060908674 @default.
- W3048960296 cites W2063598137 @default.
- W3048960296 cites W2066542782 @default.
- W3048960296 cites W2067627464 @default.
- W3048960296 cites W2069319950 @default.
- W3048960296 cites W2070013305 @default.
- W3048960296 cites W2074576128 @default.
- W3048960296 cites W2077952470 @default.
- W3048960296 cites W2079755478 @default.
- W3048960296 cites W2086412995 @default.
- W3048960296 cites W2088450500 @default.
- W3048960296 cites W2088588172 @default.
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- W3048960296 cites W2093599058 @default.
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- W3048960296 cites W2094119534 @default.
- W3048960296 cites W2097166887 @default.
- W3048960296 cites W2111628861 @default.
- W3048960296 cites W2128466923 @default.
- W3048960296 cites W2131655276 @default.
- W3048960296 cites W2135826460 @default.
- W3048960296 cites W2146684378 @default.
- W3048960296 cites W2315564793 @default.
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- W3048960296 cites W4242085007 @default.
- W3048960296 cites W4243427217 @default.
- W3048960296 cites W4250665749 @default.
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- W3048960296 doi "https://doi.org/10.1080/09670262.2020.1786858" @default.
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