The photosynthetic performance of a cultivated Japanese green alga Caulerpa lentillifera in response to three different stressors, temperature, irradiance, and desiccation

Terada, Ryuta; Takaesu, Moe; Borlongan, Iris Ann; Nishihara, Gregory N.

doi:10.1007/s10811-021-02439-7

Cited by 21 publications

(58 citation statements)

References 56 publications

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“…A similar result was also observed in our recent study of the subtidal green alga Caulerpa lentillifera J.Agardh (Bryopsidales), whose ΔF/F m ′ values declined when the AWC dropped below 90% and could not recover to the initial levels (Terada et al . 2021b). Given that S. japonica is a subtidal species, the capacity of photosynthetic recovery after desiccation is not expected to be high relative to the intertidal seaweeds (Davison & Pearson 1996; Holzinger & Karsten 2013; Beer et al .…”

Section: Discussionmentioning

confidence: 99%

“…The experimental design was adopted from our recent studies on the desiccation effects on the photosynthetic activity in seaweeds (Terada et al . 2020, 2021a,b; Ito et al . 2021).…”

Section: Methodsmentioning

confidence: 99%

“…Indeed, the ability to withstand emersion is a major characteristic of intertidal algae (e.g. Porphyra [sensu lato; Bangiales], Gracilaria [sensu lato; Gracilariales], Chondrus [Gigartinales], and Ulva [Ulvales]; Abe et al 2001;Ji & Tanaka 2002;Zou & Gao 2002;Ito et al 2021;Kameyama et al 2021;Terada et al 2021b). For instance, the macroscopic gametophyte of a red alga, Neopyropia yezoensis (Ueda) Yang et Brodie (= Pyropia yezoensis; Bangiales), has a strong tolerance to desiccation, given that its reduced Photosystem II (PSII) photochemical efficiency during 24 h of emersion returned to near initial values after reimmersion in seawater (Terada et al 2021a).…”

Section: Introductionmentioning

confidence: 99%

“…2021; Terada et al . 2021b). For instance, the macroscopic gametophyte of a red alga, Neopyropia yezoensis (Ueda) Yang et Brodie (= Pyropia yezoensis ; Bangiales), has a strong tolerance to desiccation, given that its reduced Photosystem II (PSII) photochemical efficiency during 24 h of emersion returned to near initial values after reimmersion in seawater (Terada et al .…”

Section: Introductionmentioning

confidence: 99%

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The effects of desiccation and salinity gradients in the PSII photochemical efficiency of a subtidal brown alga, Saccharina japonica (Laminariales) from Hokkaido, Japan

Shindo

Nishihara

Borlongan

et al. 2022

Phycological Research

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We determined the response of photochemical efficiency to desiccation and salinity in an edible brown alga, Saccharina japonica (var. japonica), using a pulse amplitude modulation chlorophyll fluorometer. Natural populations of this species in Muroran, Hokkaido, Japan are most of the time immersed in the subtidal zone; however, those at the uppermost part of the sublittoral are sometimes emersed during low tide. In the laboratory experiment, the alga under aerial exposure up to 8 h under dim light at 20 C and 50% humidity showed that the effective quantum yields (ΔF/F m 0 ) of Photosystem II quickly declined after more than 45 min of emersion; ΔF/F m 0 also failed to recover to the initial level even after 1 day of rehydration in seawater. Under emersion, the ΔF/F m 0 values were relatively stable and above 0.5 when the absolute water content (AWC, %) was greater than 50%; however, it declined as the AWC decreased. Once the algae were dehydrated to an AWC of less than 50%, their ΔF/F m 0 did not return to the initial level despite subsequent reimmersion in seawater, suggesting the low ability of photosynthetic recovery from dehydration. Results of in situ measurements in Muroran showed that the ΔF/F m 0 of S. japonica declined during the tidal exposure; however, it recovered after they were again immersed in seawater due to the rising tide. Furthermore, S. japonica showed a stenohaline photosynthetic response between 20 and 40 psu, as their ΔF/F m 0 values were found to be unchanged in these salinities after 5 days of laboratory culture; this suggests the seaweed's photosynthetic tolerance and/or acclimation within such a relatively narrow range, which might be one of the traits that preclude its occurrence in the intertidal and brackish waters. Indeed, desiccation risk and fluctuating salinity are important limiting factors that influence the stability of kelp beds for sustainable utilization in the regional fishery including mariculture of this species.

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Section: Discussionmentioning

confidence: 99%

“…The experimental design was adopted from our recent studies on the desiccation effects on the photosynthetic activity in seaweeds (Terada et al . 2020, 2021a,b; Ito et al . 2021).…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The effects of desiccation and salinity gradients in the PSII photochemical efficiency of a subtidal brown alga, Saccharina japonica (Laminariales) from Hokkaido, Japan

Shindo

Nishihara

Borlongan

et al. 2022

Phycological Research

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“…The sea grape or green caviar Caulerpa lentillifera J. Agardh 1837 (Ulvophyceae, Bryopsidales) is a green macroalga widely cultivated in tropical countries of the Indo‐Pacific region, and its market as a seafood delicacy has been expanded drastically in the last decades. Not only C. lentillifera unique texture, flavor, and appearance which let it resemble caviar (e.g., Ly et al, 2021 ), but also its elevated contents of polyunsaturated fatty acids, antioxidants, vitamins, and trace elements, comparatively higher than other edible macroalgae (de Gaillande et al, 2017 ; Paul et al, 2014 ; Saito et al, 2010 ; Yap et al, 2019 ), makes it a valuable functional food with exponentially increasing demand (Terada et al, 2021 ). Moreover, the combination of the high nutritional quality with the simple and low‐cost cultivation transform C. lentillifera into a promising candidate to enhance food security in tropical countries (de Gaillande et al, 2017 ; Stuthmann et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Insights into the bacterial community composition of farmed Caulerpa lentillifera: A comparison between contrasting health states

et al. 2021

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The bacterial communities of Caulerpa lentillifera were studied during an outbreak of an unknown disease in a sea grape farm from Vietnam. Clear differences between healthy and diseased cases were observed at the order, genus, and Operational Taxonomic Unit (OTU) level. A richer diversity was detected in the diseased thalli of C. lentillifera , as well as the dominance of the orders Flavobacteriales (phylum Bacteroidetes) and Phycisphaerales (Planctomycetes). Aquibacter, Winogradskyella , and other OTUs of the family Flavobacteriaceae were hypothesized as detrimental bacteria, this family comprises some well‐known seaweed pathogens. Phycisphaera together with other Planctomycetes and Woeseia were probably saprophytes of C. lentillifera . The Rhodobacteraceae and Rhodovulum dominated the bacterial community composition of healthy C. lentillifera . The likely beneficial role of Bradyrhizobium, Paracoccus , and Brevundimonas strains on nutrient cycling and phytohormone production was discussed. The bleaching of diseased C. lentillifera might not only be associated with pathogens but also with an oxidative response. This study offers pioneering insights on the co‐occurrence of C. lentillifera ‐attached bacteria, potential detrimental or beneficial microbes, and a baseline for understanding the C. lentillifera holobiont. Further applied and basic research is urgently needed on C. lentillifera microbiome, shotgun metagenomic, metatranscriptomic, and metabolomic studies as well as bioactivity assays are recommended.

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The occurrence of Phycocalidia tanegashimensis (Bangiaceae) in the splash zone may be related to the tolerance of photochemical efficiency to temperature, irradiance, desiccation, and salinity

Terada

Watanabe

et al. 2021

J Appl Phycol

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The photosynthetic performance of a cultivated Japanese green alga Caulerpa lentillifera in response to three different stressors, temperature, irradiance, and desiccation

Cited by 21 publications

References 56 publications

The effects of desiccation and salinity gradients in the PSII photochemical efficiency of a subtidal brown alga, Saccharina japonica (Laminariales) from Hokkaido, Japan

The effects of desiccation and salinity gradients in the PSII photochemical efficiency of a subtidal brown alga, Saccharina japonica (Laminariales) from Hokkaido, Japan

Insights into the bacterial community composition of farmed Caulerpa lentillifera: A comparison between contrasting health states

The occurrence of Phycocalidia tanegashimensis (Bangiaceae) in the splash zone may be related to the tolerance of photochemical efficiency to temperature, irradiance, desiccation, and salinity

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