The impact of nitrogen deficiency and subsequent recovery on the photosynthetic performance of the red macroalga Gracilariopsis lemaneiformis

Liu, Xiaojuan; Wen, Jinyan; Zheng, Canqi; Jia, Haojie; Chen, Weizhou; Du, Hong

doi:10.1007/s10811-019-1745-x

Cited by 4 publications

(9 citation statements)

References 47 publications

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“…Their physiological and metabolic activities, including growth, photosynthesis, and protein and nucleic acid synthesis, will be suppressed by nitrogen deficiency below the critical concentration [72,73]. However, nitrogen replenishment quickly reverted the nitrogen accumulation and metabolism of algae, with the reestablishment of the nitrogen reserve pool and growth promotion [33,50,74]. In this study, the nitrogen removal capacities of both species after nitrogen recovery were positively correlated with the nitrogen limitation period, exhibiting a compensatory response in nitrogen accumulation.…”

Section: Discussionmentioning

confidence: 99%

“…Under the same nitrogen limitation and recovery conditions, N. haitanensis and N. dentata showed similar NO 3 -N removal rates, whereas the RGRs of N. haitanensis were significantly lower than those of N. dentata. Liu et al [74] demonstrated that nitrogen deprivation and then recovery notably promoted the growth of Asparagus schoberioides (formerly Gracilaria lemaneiformis) (Rhodophyta), but significantly inhibited the accumulation of phycoerythrin and chlorophyll a. In contrast, Friedlander et al [78] reported that after nitrogen limitation and recovery, although the external nitrogen concentration was sufficient, Gracilaria conferta (Rhodophyta) did not grow significantly, probably due to more internal organic synthesis.…”

Section: Discussionmentioning

confidence: 99%

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Effects of Desiccation, Water Velocity, and Nitrogen Limitation on the Growth and Nutrient Removal of Neoporphyra haitanensis and Neoporphyra dentata (Bangiales, Rhodophyta)

Cui

Liu

et al. 2021

Water

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Seaweeds have been verified to effectively reduce the nutrients of aquaculture wastewater, and to increase the economic output when commercially valuable species are utilized. Pyropia/Porphyra/Neopyropia/Neoporphyra species are important seafood resources globally, and their growth and bioremediation capacities are affected by diverse biotic and abiotic stressors. In this study, we investigated the effects of desiccation (0, 1, 2, 4, and 6 h of air exposure), water velocity (0.1, 0.2, and 0.5 m s−1), and the nitrogen limitation period (1, 2, and 3 d) on the relative growth rates (RGR) and nutrient removal rates of Neoporphyrahaitanensis and Neoporphyradentata. The RGRs and NO3-N removal rates of the two species decreased significantly with increasing desiccation periods. A higher water velocity of 0.5 m s−1 had a greater negative impact on the RGRs and NO3-N and PO4-P removal rates than 0.1 and 0.2 m s−1. N. haitanensis exhibited a greater tolerance to water motion than N. dentata. Additionally, the RGRs and NO3-N and PO4-P removal rates were significantly different among the nitrogen limitation periods. N. haitanensis and N. dentata exhibited different nitrogen usage strategies after nitrogen limitation and recovery. These results provide valuable information relating to the excessive nutrient removal from aquaculture wastewater by Neoporphyra species.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Effects of Desiccation, Water Velocity, and Nitrogen Limitation on the Growth and Nutrient Removal of Neoporphyra haitanensis and Neoporphyra dentata (Bangiales, Rhodophyta)

Cui

Liu

et al. 2021

Water

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“…Algae were collected, dried, and weighed after the culturing of 0, 2, 4, 8, 10, 12, 14 and 16 days. The relative growth rate was calculated by the formula: [(W t /W 0 ) 1/t −1] × 100%, W t is the fresh weight of algae at time t (g), while W 0 is the fresh weight of algae at the beginning (g), t is the time between the two-detection time (day) [20,24].…”

Section: Physiological Measurementsmentioning

confidence: 99%

“…The maximum effective quantum yield of photosystem II (PSII) was determined by Fv/Fm value. The Fv/Fm ratio was measured with a pulse amplitude modulated (PAM) fluorometer (Imaging PAM, Walz, Effelrich, Germany) as introduced in our previous papers [23,24,26]. After the culture of 0, 8 and 16 days, 2 mg algae were collected and dried to constant weight at 60°C.…”

Section: Physiological Measurementsmentioning

confidence: 99%

Transcriptome Analysis and Physiological Responses of Economic Macroalga Gracilariopsis lemaneiformis under Sulfate Deficiency

Jia¹,

Du²,

Aslam³

et al. 2023

Phyton

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Sulfur is an essential macronutrient for the growth of all photosynthetic organisms and plays important roles in different metabolic pathways. However, sulfur metabolism and its related research on macroalgae with important ecological value is rather limited. In this study, marine ecological valued macroalga Gracilariopsis lemaneiformis was used to study the general physiological responses and transcriptome profiling under the sulfate deficiency. The relative growth rate of algae under sulfate deficiency was statistically significantly lower than that of control after 6 days. However, no significant differences were observed in the pigments content and Fv/Fm value, indicating that the photosynthesis was not obviously affected under the sulfate deficiency. Furthermore, the significantly increased soluble protein and carbohydrate contents, and indistinctively differentially expressed sulfate transporter/permease (ST) and ATP sulfurylase (ATPS) genes suggesting that G. lemaneiformis cells did not use sulfur from internal protein and carbohydrate pools but utilize stored sulfur from vacuole to satisfy their nutritional requirements during the sulfate deficiency. Transcriptome data showed that most annotated differentially expressed genes (DEGs) were down-regulated under the sulfate deficiency, including a large proportion of genes involved in the pathway of sulfur metabolism. Therefore, it was concluded that the pathway of sulfur metabolism was suppressed under the sulfate deficiency in G. lemaneiformis. The results and analysis in this study provide a comprehensive understanding for the physiological and molecular response of G. lemaneiformis to sulfate deficiency.

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“…Previous studies have shown that nitrogen deficiency generally reduces algal growth rates and nitrogenous compounds, including chlorophyll a, phycobiliproteins, proteins, and amino acids [9][10][11][12]. In contrast, soluble polysaccharides and lipids were observed to increase in algae under the stress of nitrogen deficiency [11,13].…”

Section: Introductionmentioning

confidence: 96%

Physiological Impacts of Nitrogen Starvation and Subsequent Recovery on the Red Seaweed Grateloupia turuturu (Halymeniaceae, Rhodophyta)

et al. 2023

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Grateloupia turuturu is a potential aquaculture species as it has a significant number of high-valued compounds. The purpose of this study was to evaluate the physiobiochemical performances of G. turuturu under nitrogen deficiency and resupply. In this study, G. turuturu was exposed to different lengths of nitrogen starvation (from 0 to 28 days) and subsequently subjected to a 21-day nitrogen-recovery period. The nitrate and ammonium uptake rates, growth rates, and nitrogenous compounds of G. turuturu were periodically measured. The results showed that the nitrogen-starved G. turururu absorbed ammonium much faster than nitrate after nitrogen recovery. Furthermore, an overcompensatory uptake of ammonium was induced via nitrogen deficiency in a short phase after nitrogen resupply. The time and rates of depletion of different compositions varied during nitrogen starvation. Specifically, pigment contents decreased faster than protein and total nitrogen contents, and the reduction rate of protein was the lowest. After nitrogen resupply, though G. turuturu gradually recovered, growth rates and pigments from long-term nitrogen starvations could not recover enough to reach their original values. Our study reveals the physiological changing processes of G. turuturu during nitrogen starvation and recovery and provides baseline information aiding in the development of strategies for G. turuturu cultivation.

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The impact of nitrogen deficiency and subsequent recovery on the photosynthetic performance of the red macroalga Gracilariopsis lemaneiformis

Cited by 4 publications

References 47 publications

Effects of Desiccation, Water Velocity, and Nitrogen Limitation on the Growth and Nutrient Removal of Neoporphyra haitanensis and Neoporphyra dentata (Bangiales, Rhodophyta)

Effects of Desiccation, Water Velocity, and Nitrogen Limitation on the Growth and Nutrient Removal of Neoporphyra haitanensis and Neoporphyra dentata (Bangiales, Rhodophyta)

Transcriptome Analysis and Physiological Responses of Economic Macroalga Gracilariopsis lemaneiformis under Sulfate Deficiency

Physiological Impacts of Nitrogen Starvation and Subsequent Recovery on the Red Seaweed Grateloupia turuturu (Halymeniaceae, Rhodophyta)

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