Evidence map›Paper›PMID 39322781›Full record

ArticleBioprocess and biosystems engineering2025

A novel stepwise salinity acclimation method to improve the survival of freshwater microalgae Haematococcus lacustris in seawater salinity.

Qianyi Gu, Yoshiki Takayama, Noriaki Natori, Minamo Hirahara, Anupreet Kaur Chowdhary, Tatsuki Toda

Abstract read
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Article in Bioprocess and biosystems engineering, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Harnessing microalgae for bioproducts: innovations in synthetic biology.World journal of microbiology & biotechnology · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Qianyi GuLaboratory of Restoration Ecology, Graduate School of Science and Engineering, Soka University, Hachioji, Tokyo, 192-8577, Japan. guqianyi2011@soka.gr.jp.
Yoshiki TakayamaInstitute of Plankton Eco-Engineering, Soka University, Hachioji, Tokyo, 192-8577, Japan.
Noriaki NatoriInstitute of Plankton Eco-Engineering, Soka University, Hachioji, Tokyo, 192-8577, Japan.
Minamo HiraharaLaboratory of Restoration Ecology, Graduate School of Science and Engineering, Soka University, Hachioji, Tokyo, 192-8577, Japan.
Anupreet Kaur ChowdharyLaboratory of Restoration Ecology, Graduate School of Science and Engineering, Soka University, Hachioji, Tokyo, 192-8577, Japan.
Tatsuki TodaLaboratory of Restoration Ecology, Graduate School of Science and Engineering, Soka University, Hachioji, Tokyo, 192-8577, Japan.

Funding

Japan International Cooperation Agency JPMJSA1509Japan Science and Technology Agency JPMJSA1509Japan Society for the Promotion of Science JP19H03035Science and Technology Research Partnership for Sustainable Development JPMJSA1509
6 · The paper itself

Abstract

Freshwater microalga Haematococcus lacustris rich in astaxanthin, as a supplemental live diet can directly supply natural astaxanthin to the aquaculture organisms, except marine aquaculture organisms, since H. lacustris cannot tolerate seawater salinity. The objective of the present study is to provide a salinity acclimation method that allows H. lacustris to survive and accumulate astaxanthin with the aim of developing a novel supplemental live diet for marine aquaculture organisms. H. lacustris cultured in freshwater was subjected to different stepwise salinity acclimation processes (two-, three-, and four-shift). As the controls, H. lacustris was exposed to five constant salinities conditions (0, 0.05, 0.075, 0.3, and 0.6 M NaCl, respectively). Among the controls, almost all cells in the 0.3 M and 0.6 M NaCl conditions died immediately. In contrast, H. lacustris in the stepwise salinity acclimation processes survived in 0.6 M NaCl (equivalent to seawater salinity of 35 psu), showing the highest living-cell proportion (50.0%) and astaxanthin yield (0.72 mg·L

Indexed as

AcclimatizationChlorophyceaeMicroalgaeSalinitySeawaterFresh WaterXanthophyllsastaxanthineXanthophyllsAstaxanthinHaematococcus lacustrisLive microalgal dietsStepwise salinity acclimationSurvival

Identifiers

PMID39322781

What OpenQuestion holds

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.