Phytoplankton growth allometry and size- dependent C:N stoichiometry revealed by a variable quota model

Mei, Zhi-Ping; Finkel, Zoe V.; Irwin, Andrew J.

doi:10.3354/meps09149

Cited by 15 publications

(15 citation statements)

References 73 publications

(159 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Low N often limits phytoplankton growth (Mei et al 2011; Moore et al 2013; Li and Gao 2014) as indeed found here for T. pseudonana (Fig. 1a).…”

Section: Discussionsupporting

confidence: 83%

“…Diatoms also span a wide size range across species from <2 µm to over 200 µm in equivalent spherical diameter, giving over eight orders of magnitude in cell volume (Beardall et al 2009) Finkel et al, 2010). Diatom cell size affects many physiological processes, including light energy absorption (Finkel 2001; Key et al 2010), photosynthesis and respiration (Wu et al 2014a; López-Sandoval et al 2014), nutrient diffusion and uptake (Raven 1998; Raven and Kübler 2002; Marañón et al 2013), and ultimately affects their growth (Mei et al 2011; Marañón et al 2013; Wu et al 2014a). …”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Interactive effects of nitrogen and light on growth rates and RUBISCO content of small and large centric diatoms

Campbell

2016

Photosynth Res

View full text Add to dashboard Cite

Among marine phytoplankton groups, diatoms span the widest range of cell size, with resulting effects upon their nitrogen uptake, photosynthesis and growth responses to light. We grew two strains of marine centric diatoms differing by ~4 orders of magnitude in cell biovolume in high (enriched artificial seawater with ~500 µmol L−1 µmol L−1 NO3 −) and lower-nitrogen (enriched artificial seawater with <10 µmol L−1 NO3 −) media, across a range of growth light levels. Nitrogen and total protein per cell decreased with increasing growth light in both species when grown under the lower-nitrogen media. Cells growing under lower-nitrogen media increased their cellular allocation to RUBISCO and their rate of electron transport away from PSII, for the smaller diatom under low growth light and for the larger diatom across the range of growth lights. The smaller coastal diatom Thalassiosira pseudonana is able to exploit high nitrogen in growth media by up-regulating growth rate, but the same high-nitrogen growth media inhibits growth of the larger diatom species.Electronic supplementary materialThe online version of this article (doi:10.1007/s11120-016-0301-7) contains supplementary material, which is available to authorized users.

show abstract

“…Low N often limits phytoplankton growth (Mei et al 2011; Moore et al 2013; Li and Gao 2014) as indeed found here for T. pseudonana (Fig. 1a).…”

Section: Discussionsupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Interactive effects of nitrogen and light on growth rates and RUBISCO content of small and large centric diatoms

Campbell

2016

Photosynth Res

View full text Add to dashboard Cite

show abstract

“…Larger phytoplankton cells are known to have slower growth rates as compared to smaller ones due to their slower biomass-normalized metabolic rates, higher nutrient/energy requirements, and faster sinking rates (Raven 1998;Raven and Kübler 2002;Mei et al 2011). However, this study reveals a new perspective to this theory that larger cells (>20 μm) can benefit from UV radiation since they can use most of UV spectral energy for photosynthesis, while smaller ones (<5 μm) cannot use this energy when PAR is limiting.…”

Section: Discussionmentioning

confidence: 99%

“…Cell size of phytoplankton crucially determines the efficiency of element or energy transfer and, thus, the production of higher trophic levels in marine food webs (Raven 1998;Finkel et al 2010;Mei et al 2011). Light absorption (Sigee 2005;Fujiki and Taguchi 2002), photosynthesis (Raven and Kübler 2002;Li et al 2011), and tolerance to UVR (Laurion and Vincent 1998;Häder 2011) are also known to differ among differently cell-sized phytoplankton.…”

Section: Introductionmentioning

confidence: 99%

Cell Size-Dependent Effects of Solar UV Radiation on Primary Production in Coastal Waters of the South China Sea

Gao

2013

Estuaries and Coasts

View full text Add to dashboard Cite

In order to examine the effects of solar ultraviolet radiation (UVR, 280-400 nm) on photosynthesis of differently cell-sized phytoplankton, natural phytoplankton assemblages from the coastal waters of the South China Sea were separated into three groups (>20, 5-20, and <5 μm) and exposed to four different solar UV spectral regimes, i.e., 280-700 nm (PAR + UVR), 400-700 nm (PAR), 280-400 nm (UV-A+B), and 315-400 nm (UV-A). In situ carbon fixation measurements revealed that microplankton (>20 μm) efficiently utilized UV-A for photosynthetic carbon fixation, with assimilation number of up to 1.01 μg C (μg chl a) −1 h −1 under 21.4 Wm −2 UV-A alone (about half of noontime irradiance at the surface), about 40 % higher than nanoplankton (5-20 μm). UV-B (280-315 nm) of 0.95 Wm −2 reduced the carbon fixation by approximately 20 and 57 % in microplankton and nanoplankton assemblages, respectively. In contrast, smaller picoplankton (<5 μm) was unable to utilize UV-A for the photosynthetic carbon fixation. In addition, only microsized assemblages demonstrated the UV enhancement on their primary productivity in the presence of PAR, by about 8 % under moderate intensities of solar radiation.

show abstract

“…Sub-optimal growth conditions, irradiance, temperature, and nutrient concentrations, can alter the size scaling of metabolism if the acquisition of resources limits metabolism and is size-dependent [5], [36], [42], [43]. Due to physical constraints larger cells will absorb fewer photons per unit of pigment than physiologically equivalent smaller cells with the same shape and intracellular pigment composition and concentration [44], [45].…”

Section: Introductionmentioning

confidence: 99%

Influence of Cell Size and DNA Content on Growth Rate and Photosystem II Function in Cryptic Species of Ditylum brightwellii

et al. 2012

View full text Add to dashboard Cite

DNA content and cell volume have both been hypothesized as controls on metabolic rate and other physiological traits. We use cultures of two cryptic species of Ditylum brightwellii (West) Grunow with an approximately two-fold difference in genome size and a small and large culture of each clone obtained by isolating small and large cells to compare the physiological consequences of size changes due to differences in DNA content and reduction in cell size following many generations of asexual reproduction. We quantified the growth rate, the functional absorption cross-section of photosystem II (PSII), susceptibility of PSII to photoinactivation, PSII repair capacity, and PSII reaction center proteins D1 (PsbA) and D2 (PsbD) for each culture at a range of irradiances. The species with the smaller genome has a higher growth rate and, when acclimated to growth-limiting irradiance, has higher PSII repair rate capacity, PSII functional optical absorption cross-section, and PsbA per unit protein, relative to the species with the larger genome. By contrast, cell division rates vary little within clonal cultures of the same species despite significant differences in average cell volume. Given the similarity in cell division rates within species, larger cells within species have a higher demand for biosynthetic reductant. As a consequence, larger cells within species have higher numbers of PSII per unit protein (PsbA), since PSII photochemically generates the reductant to support biosynthesis. These results suggest that DNA content, as opposed to cell volume, has a key role in setting the differences in maximum growth rate across diatom species of different size while PSII content and related photophysiological traits are influenced by both growth rate and cell size.

show abstract

Phytoplankton growth allometry and size- dependent C:N stoichiometry revealed by a variable quota model

Cited by 15 publications

References 73 publications

Interactive effects of nitrogen and light on growth rates and RUBISCO content of small and large centric diatoms

Interactive effects of nitrogen and light on growth rates and RUBISCO content of small and large centric diatoms

Cell Size-Dependent Effects of Solar UV Radiation on Primary Production in Coastal Waters of the South China Sea

Influence of Cell Size and DNA Content on Growth Rate and Photosystem II Function in Cryptic Species of Ditylum brightwellii

Contact Info

Product

Resources

About