Interactive effects of temperature and irradiance including spectral light quality on the photosynthesis of a brown alga Saccharina japonica (Laminariales) from Hokkaido, Japan

Shindo, Aoi; Borlongan, Iris Ann; Nishihara, Gregory N.; Terada, Ryuta

doi:10.1016/j.algal.2022.102777

Cited by 13 publications

(28 citation statements)

References 34 publications

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“…2021c; Shindo et al . 2022a). One day before the experiment, fronds of the blade (leaf‐like appendages) at the lower and middle portions of thalli were cut (approximately 1.5 cm long and wide) and acclimated to the dark at 24°C for approximately 12 h. The F v /F m was measured in darkness, whereas the Δ F/F m ′ was measured at 50 μmol photons m −2 s −1 .…”

Section: Methodsmentioning

confidence: 99%

“…2020b; Shindo et al . 2022a). Each color of light was provided by two‐sets of light‐emitting diode (LED) arrays for red (660 nm; ISL‐150X150‐H4RR‐SN; CCS Inc., Kyoto, Japan), green (525 nm; ISL‐150X150‐HGG) and blue (450 nm; ISL‐150X150‐BB45) light (see Supporting information, Table S1).…”

Section: Methodsmentioning

confidence: 99%

“…2021a; Saccharina japonica (Areschoug) C.Lane Mayes, Druehl et G.W.Saunders (Laminariales), Shindo et al . 2022a). This method could reveal the photosynthetic performance of S. macrocarpum at low temperatures.…”

Section: Introductionmentioning

confidence: 99%

“…Similarly, S. japonica possess fucoxanthin to capture more of the blue light spectrum (Shindo et al . 2022a). The potential for photosynthesis under a variety of light spectra of the genus Sargassum , including S. macrocarpum , remains to be examined.…”

Section: Introductionmentioning

confidence: 99%

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The effect of temperature, light‐spectrum, desiccation and salinity gradients on the photosynthetic performance of a subtidal brown alga, Sargassum macrocarpum, from Japan

Ito

Yoshioka

Shimabukuro³

et al. 2022

Phycological Research

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The effect of temperature, light-spectrum, desiccation and salinity gradients on the photosynthesis of a Japanese subtidal brown alga, Sargassum macrocarpum (Fucales), was determined using a pulse amplitude modulation-chlorophyll fluorometer and dissolved oxygen sensors. Temperature responses of the maximum (F v /F m in darkness) and effective (ΔF/F m 0 at 50 μmol photons m À2 s À1 ; = Φ PSII ) quantum yields during 6-day culture (4-36 C) remained high at 12-28 C, but decreased at higher temperatures. Nevertheless, ΔF/F m 0 also dropped at temperatures below 8 C, suggesting light sensitivity under chilling temperatures because F v /F m remained high. Photosynthesis-irradiance responses at 24 C under red (660 nm), green (525 nm), blue (450 nm) and white light (metal halide lamp) showed that maximum net photosynthesis under blue and white light was greater than under red and green light, indicating the sensitivity and photosynthetic availability of blue light in the subtidal light environment. In the desiccation experiment, samples under aerial exposure of up to 8 h under dim-light at 24 C and 50% humidity showed that ΔF/F m 0 quickly declined after more than 45 min of emersion; furthermore, ΔF/F m 0 also failed to recover to initial levels even after 1 day of rehydration in seawater. Under the emersion state, the ΔF/F m 0 remained high when the relative water content (RWC) was greater than 50%; in contrast, it quickly dropped when the RWC was less than 50%. When the RWC was reduced below 50%, ΔF/F m 0 did not return to initial levels, regardless of subsequent re-hydration, suggesting a low capacity of photosynthesis to recover from desiccation. The stenohaline response of photosynthesis under 3-day culture is evident, given that ΔF/F m 0 declined when salinity was beyond 20-40 psu. Adaptation to subtidal environments in temperate waters of Japan can be linked to these traits.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The effect of temperature, light‐spectrum, desiccation and salinity gradients on the photosynthetic performance of a subtidal brown alga, Sargassum macrocarpum, from Japan

Ito

Yoshioka

Shimabukuro³

et al. 2022

Phycological Research

Self Cite

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“…The alga has a large market demand and has been widely used for food, fertilizer, and as raw industrial materials [ 29 , 30 ]. The eco-physiological or tolerance-related responses of S. japonica to the adverse environmental cues, e.g., elevated pCO 2 [ 9 , 11 ] and high light and temperature [ 31 , 32 ], have been intensively reported. However, how the kelp responds to the combined OA and hyposaline conditions remains unknown.…”

Section: Introductionmentioning

confidence: 99%

Decreased Salinity Offsets the Stimulation of Elevated pCO2 on Photosynthesis and Synergistically Inhibits the Growth of Juvenile Sporophyte of Saccharina japonica (Laminariaceae, Phaeophyta)

Zhang

Shi

et al. 2022

Plants

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The combined effect of elevated pCO2 (Partial Pressure of Carbon Dioxide) and decreased salinity, which is mainly caused by freshwater input, on the growth and physiological traits of algae has been poorly assessed. In order to investigate their individual and interactive effects on the development of commercially farmed algae, the juvenile sporophytes of Saccharina japonica were cultivated under different levels of salinity (30, 25 and 20 psu) and pCO2 (400 and 1000 µatm). Individually, decreased salinity significantly reduced the growth rate and pigments of S. japonica, indicating that the alga was low-salinity stressed. The maximum quantum yield, Fv/Fm, declined at low salinities independent of pCO2, suggesting that the hyposalinity showed the main effect. Unexpectedly, the higher pCO2 enhanced the maximum relative electron transport rate (rETRmax) but decreased the growth rate, pigments and soluble carbohydrates contents. This implies a decoupling between the photosynthesis and growth of this alga, which may be linked to an energetic reallocation among the different metabolic processes. Interactively and previously untested, the decreased salinity offset the improvement of rETRmax and aggravated the declines of growth rate and pigment content caused by the elevated pCO2. These behaviors could be associated with the additionally decreased pH that was induced by the low salinity. Our data, therefore, unveils that the decreased salinity may increase the risks of future CO2-induced ocean acidification on the production of S. japonica.

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Phenology and the response of photosynthesis to irradiance and temperature gradient in the herbal drug red alga, Chondria armata (Rhodomelaceae, Ceramiales) from Kagoshima, Japan

Terada,

Yoshizato,

Murakami

et al. 2024

J Appl Phycol

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Seasonal changes in the size of the herbal drug red alga Chondria armata (Rhodomelaceae, Ceramiales) were investigated in Kagoshima, Japan, which is near the northern distributional limit in the western Pacific. Additionally, its photosynthetic response to irradiance and temperature was examined using dissolved oxygen sensors and a pulse amplitude modulation (PAM)-chlorophyll fluorometer. This alga was observed in tidepools throughout the year; its height and weight were greatest in December and the lowest in April and May. The net photosynthesis of the photosynthesis–irradiance (P–E) curve determined at 28°C quickly saturated at 113 µmol photons m-2 s-1, with minimal inhibition even at 1000 µmol photons m-2 s-1. The gross photosynthesis of the photosynthesis–temperature (P–T) curved over 8 to 40°C, measured at 500 µmol photons m-2 s-1, peaked at 30.1°C and decreased rapidly below 20°C and above 36°C, respectively. Similarly, the effective quantum yield (ΔF/Fm') after a 3-day culture during 4–40°C at 50 µmol photons m-2 s-1 remained stable between 16°C and 32°C but decreased outside of this range. The combined effect of irradiance (200 [low] and 1000 [high] µmol photons m-2 s-1) and temperature (28, 22, and 16°C) revealed that ΔF/Fm' declined during exposure to high irradiance at all temperature treatments. However, it mostly recovered after a subsequent 12-hour period of dim-light acclimation at 28°C and 22°C. In contrast, those at 16°C could not recover, indicating the occurrence of low-temperature light stress. This alga appears to be well-adapted to the irradiance and temperature environment at the study site. However, the winter temperature appears to approach its threshold level, and the occurrence of strong light during the winter might adversely affect the abundance of this alga near its northern distributional limit.

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Interactive effects of temperature and irradiance including spectral light quality on the photosynthesis of a brown alga Saccharina japonica (Laminariales) from Hokkaido, Japan

Cited by 13 publications

References 34 publications

The effect of temperature, light‐spectrum, desiccation and salinity gradients on the photosynthetic performance of a subtidal brown alga, Sargassum macrocarpum, from Japan

The effect of temperature, light‐spectrum, desiccation and salinity gradients on the photosynthetic performance of a subtidal brown alga, Sargassum macrocarpum, from Japan

Decreased Salinity Offsets the Stimulation of Elevated pCO2 on Photosynthesis and Synergistically Inhibits the Growth of Juvenile Sporophyte of Saccharina japonica (Laminariaceae, Phaeophyta)

Phenology and the response of photosynthesis to irradiance and temperature gradient in the herbal drug red alga, Chondria armata (Rhodomelaceae, Ceramiales) from Kagoshima, Japan

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