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Ren Z, Li H, Sun P, Fu R, Bai Z, Zhang G, Sun L, Wei Y. Development and challenges of emerging biological technologies for algal-bacterial symbiosis systems: A review. BIORESOURCE TECHNOLOGY 2024; 413:131459. [PMID: 39255948 DOI: 10.1016/j.biortech.2024.131459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2024] [Revised: 09/06/2024] [Accepted: 09/06/2024] [Indexed: 09/12/2024]
Abstract
The algal-bacterial symbiosis system (ABSS) is considered as a sustainable wastewater treatment process. This review provides a comprehensive overview of the mechanisms of ABSS for the removal of common pollutant, heavy metals, and especially for emerging pollutants. For the macroscopical level, this review not only describes in detail the reactor types, influencing factors, and the development of the algal-bacterial process, but also innovatively proposes an emerging process that combines an ABSS with other processes, which enhances the efficiency of removing difficult-to-biodegrade pollutants. Further for the microscopic level, interactions between algae and bacteria, including nutrient exchange, signaling transmission and gene transfer, have been deeply discussed the symbiotic relationship with nutrient removal and biomass production. Finally, recommendations are given for the future development of the ABSS. This review comprehensively examines ABSS principles, development, algal-bacterial interactions, and application in wastewater treatment, aiming to deepen theoretical and practical understanding and advance ABSS technology.
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Affiliation(s)
- Zhijun Ren
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
| | - Huixue Li
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
| | - Peng Sun
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
| | - Ruiyao Fu
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
| | - Zijia Bai
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
| | - Guangming Zhang
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China
| | - Li Sun
- School of Energy and Environmental Engineering, Hebei University of Technology, Tianjin 300401, China.
| | - Yanjie Wei
- Key Laboratory of Environmental Protection in Water Transport Engineering Ministry of Communications, Tianjin Research Institute of Water Transport Engineering, Tianjin 300456, China.
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Van Le V, Ko SR, Nguyen LTT, Kim JC, Shin Y, Kim K, Ahn CY. Undibacterium cyanobacteriorum sp. nov., an auxin-producing bacterium isolated from fresh water during cyanobacterial bloom period. Antonie Van Leeuwenhoek 2024; 117:99. [PMID: 38985203 DOI: 10.1007/s10482-024-01992-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 06/24/2024] [Indexed: 07/11/2024]
Abstract
A novel Gram-negative, white-pigmented, and auxin-producing strain, 20NA77.5T, was isolated from fresh water during cyanobacterial bloom period. Pairwise comparison of the 16S rRNA gene sequences showed that strain 20NA77.5T belonged to the genus Undibacterium and exhibited the highest sequence similarity to the type strains of Undibacterium danionis (98.00%), Undibacterium baiyunense (97.93%), Undibacterium macrobrachii (97.92%), and Undibacterium fentianense (97.71%). The average nucleotide identity (ANI) and digital DNA-DNA hybridization (dDDH) values between strain 20NA77.5T and its related type strains were below 79.93 and 23.80%, respectively. The predominant fatty acids (> 10% of the total fatty acids) were C16:0 and summed feature 3 (C16:1ω7c and/or C16:1ω6c). The genomic DNA G + C content of strain 20NA77.5T was found to be 48.61%. Based on the phylogenetic distinctness, chemotaxonomic features, and phenotypic features, strain 20NA77.5T is considered to represent a novel species of the genus Undibacterium, for which the name Undibacterium cyanobacteriorum sp. nov is proposed. The type strain is 20NA77.5T (= KCTC 8005T = LMG 33136T).
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Affiliation(s)
- Ve Van Le
- Cell Factory Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - So-Ra Ko
- Cell Factory Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Loan Thi Thanh Nguyen
- Department of Agricultural Chemistry, College of Agriculture and Life Sciences, Institute of Environmentally Friendly Agriculture, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Jin-Cheol Kim
- Department of Agricultural Chemistry, College of Agriculture and Life Sciences, Institute of Environmentally Friendly Agriculture, Chonnam National University, Gwangju, 61186, Republic of Korea
| | - Yuna Shin
- Water Quality Assessment Research Division, National Institute of Environmental Research, Incheon, 22689, Republic of Korea
| | - Kyunghyun Kim
- Water Quality Assessment Research Division, National Institute of Environmental Research, Incheon, 22689, Republic of Korea
| | - Chi-Yong Ahn
- Cell Factory Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.
- Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon, 34113, Republic of Korea.
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3
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Zhang X, Lu Q. Cultivation of microalgae in food processing effluent for pollution attenuation and astaxanthin production: a review of technological innovation and downstream application. Front Bioeng Biotechnol 2024; 12:1365514. [PMID: 38572356 PMCID: PMC10987718 DOI: 10.3389/fbioe.2024.1365514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 03/06/2024] [Indexed: 04/05/2024] Open
Abstract
Valorization of food processing effluent (FPE) by microalgae cultivation for astaxanthin production is regarded as a potential strategy to solve the environmental pollution of food processing industry and promote the development of eco-friendly agriculture. In this review paper, microalgal species which have the potential to be employed for astaxanthin in FPE were identified. Additionally, in terms of CO2 emission, the performances of microalgae cultivation and traditional methods for FPE remediation were compared. Thirdly, an in-depth discussion of some innovative technologies, which may be employed to lower the total cost, improve the nutrient profile of FPE, and enhance the astaxanthin synthesis, was provided. Finally, specific effects of dietary supplementation of algal astaxanthin on the growth rate, immune response, and pigmentation of animals were discussed. Based on the discussion of this work, the cultivation of microalgae in FPE for astaxanthin production is a value-adding process which can bring environmental benefits and ecological benefits to the food processing industry and agriculture. Particularly, technological innovations in recent years are promoting the shift of this new idea from academic research to practical application. In the coming future, with the reduction of the total cost of algal astaxanthin, policy support from the governments, and further improvement of the innovative technologies, the concept of growing microalgae in FPE for astaxanthin will be more applicable in the industry.
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Affiliation(s)
- Xiaowei Zhang
- School of Grain Science and Technology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Qian Lu
- School of Grain Science and Technology, Jiangsu University of Science and Technology, Zhenjiang, China
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4
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Baylous HR, Gladfelter MF, Gardner MI, Foley M, Wilson AE, Steffen MM. Indole-3-acetic acid promotes growth in bloom-forming Microcystis via an antioxidant response. HARMFUL ALGAE 2024; 133:102575. [PMID: 38485434 DOI: 10.1016/j.hal.2024.102575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 01/05/2024] [Accepted: 01/05/2024] [Indexed: 03/19/2024]
Abstract
Interactions between bacteria and phytoplankton in the phycosphere facilitate and constrain biogeochemical cycling in aquatic ecosystems. Indole-3-acetic acid (IAA) is a bacterially produced chemical signal that promotes growth of phytoplankton and plants. Here, we explored the impact of IAA on bloom-forming cyanobacteria and their associated bacteria. Exposure to IAA and its precursor, tryptophan, resulted in a strong growth response in a bloom of the freshwater cyanobacterium, Microcystis. Metatranscriptome analysis revealed the induction of an antioxidant response in Microcystis upon exposure to IAA, potentially allowing populations to increase photosynthetic rate and overcome internally generated reactive oxygen. Our data reveal that co-occurring bacteria within the phycosphere microbiome exhibit a division of labor for supportive functions, such as nutrient mineralization and transport, vitamin synthesis, and reactive oxygen neutralization. These complex dynamics within the Microcystis phycosphere microbiome are an example of interactions within a microenvironment that can have ecosystem-scale consequences.
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Affiliation(s)
- Hunter R Baylous
- Department of Biology, James Madison University, Harrisonburg, VA 22801, USA
| | - Matthew F Gladfelter
- School of Fisheries, Aquaculture, and Aquatic Sciences, Auburn University, Auburn, AL 36849, USA
| | - Malia I Gardner
- Department of Biology, James Madison University, Harrisonburg, VA 22801, USA
| | - Madalynn Foley
- Department of Biology, James Madison University, Harrisonburg, VA 22801, USA
| | - Alan E Wilson
- School of Fisheries, Aquaculture, and Aquatic Sciences, Auburn University, Auburn, AL 36849, USA
| | - Morgan M Steffen
- Department of Biology, James Madison University, Harrisonburg, VA 22801, USA.
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Jeon MS, Han SI, Ahn JW, Jung JH, Choi JS, Choi YE. Endophyte Bacillus tequilensis improves the growth of microalgae Haematococcus lacustris by regulating host cell metabolism. BIORESOURCE TECHNOLOGY 2023; 387:129546. [PMID: 37488011 DOI: 10.1016/j.biortech.2023.129546] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 07/21/2023] [Accepted: 07/21/2023] [Indexed: 07/26/2023]
Abstract
This study identified an endosymbiotic bacterium, Bacillus tequilensis, residing within the cells of the microalga Haematococcus lacustris through 16S rRNA analysis. To confirm the optimal interactive conditions between H. lacustris and B. tequilensis, the effects of different ratios of cells using H. lacustris of different growth stages were examined. Under optimized conditions, the cell density, dry weight, chlorophyll content, and astaxanthin content of H. lacustris increased significantly, and the fatty acid content improved 1.99-fold. Microscopy demonstrated the presence of bacteria within the H. lacustris cells. The interaction upregulated amino acid and nucleotide metabolism in H. lacustris. Interestingly, muramic and phenylacetic acids were found exclusively in H. lacustris cells in the presence of B. tequilensis. Furthermore, B. tequilensis delayed pigment degradation in H. lacustris. This study reveals the impact of the endosymbiont B. tequilensis on the metabolism of H. lacustris and offers new perspectives on the symbiotic relationship between them.
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Affiliation(s)
- Min Seo Jeon
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup 56212, Republic of Korea
| | - Sang-Il Han
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup 56212, Republic of Korea
| | - Joon-Woo Ahn
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup 56212, Republic of Korea
| | - Jong-Hyun Jung
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup 56212, Republic of Korea
| | - Jong-Soon Choi
- Division of Analytical Science, Korea Basic Science, Institute, Daejeon 34133, Republic of Korea
| | - Yoon-E Choi
- Division of Environmental Science & Ecological Engineering, Korea University, Seoul 02841, Republic of Korea.
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Polyethylenimine linked with chitosan improves astaxanthin production in Haematococcus pluvialis. Appl Microbiol Biotechnol 2023; 107:569-580. [PMID: 36517544 DOI: 10.1007/s00253-022-12275-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 10/26/2022] [Accepted: 11/02/2022] [Indexed: 12/23/2022]
Abstract
Astaxanthin is receiving increasing interest as an antioxidant and high value-added secondary metabolite. Haematococcus pluvialis is the main source for astaxanthin production, and many studies are being conducted to increase the production of astaxanthin. In this study, we linked polyethylenimine (PEI) with chitosan to maintain astaxanthin-inducing ability while securing the recyclability of the inducer. Astaxanthin accumulation in H. pluvialis was induced to 86.4 pg cell-1 with the PEI-chitosan fiber (PCF) treatment prepared by cross-linking of 10 μM PEI and low molecular weight (MW) chitosan via epichlorohydrin. PEI concentration affected the astaxanthin accumulation, whereas the MW of chitosan did not. In addition, the PCF treatment in H. pluvialis increased the reactive oxygen species (ROS) content in cells, thereby upregulating the transcription of enzymes involved in astaxanthin biosynthesis. PCF can be reused multiple times with the maintenance of over 90% of the astaxanthin production efficiency. This study offers a reusable PCF stimulation strategy for enhancing natural astaxanthin content, and PCF treatment will easily increase the production scale or reduce production costs by using recyclability that is not available in current methods. KEY POINTS: • Polyethylenimine-chitosan fiber (PCF) was applied to Haematococcus pluvialis • PCF promotes astaxanthin accumulation by enhancing oxidative stress in H. pluvialis • PCF can be reused multiple times with maintaining over 90% production efficiency.
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Obtaining Bioproducts from the Studies of Signals and Interactions between Microalgae and Bacteria. Microorganisms 2022; 10:microorganisms10102029. [PMID: 36296305 PMCID: PMC9607603 DOI: 10.3390/microorganisms10102029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 10/05/2022] [Accepted: 10/12/2022] [Indexed: 11/27/2022] Open
Abstract
The applications of microalgae biomass have been widely studied worldwide. The classical processes used in outdoor cultivations of microalgae, in closed or open photobioreactors, occur in the presence of bacteria. Understanding how communication between cells occurs through quorum sensing and evaluating co-cultures allows the production of microalgae and cyanobacteria to be positively impacted by bacteria, in order to guarantee safety and profitability in the production process. In addition, the definition of the effects that occur during an interaction, promotes insights to improve the production of biomolecules, and to develop innovative products. This review presents the interactions between microalgae and bacteria, including compounds exchanges and communication, and addresses the development of new pharmaceutical, cosmetic and food bioproducts from microalgae based on these evaluations, such as prebiotics, vegan skincare products, antimicrobial compounds, and culture media with animal free protein for producing vaccines and other biopharmaceutical products. The use of microalgae as raw biomass or in biotechnological platforms is in line with the fulfillment of the 2030 Agenda related to the Sustainable Development Goals (SDGs).
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Malik S, Ashraf MUF, Shahid A, Javed MR, Khan AZ, Usman M, Manivannan A, Mehmood MA, Ashraf GA. Characterization of a newly isolated self-flocculating microalga Bracteacoccus pseudominor BERC09 and its evaluation as a candidate for a multiproduct algal biorefinery. CHEMOSPHERE 2022; 304:135346. [PMID: 35714954 DOI: 10.1016/j.chemosphere.2022.135346] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 05/29/2022] [Accepted: 06/12/2022] [Indexed: 06/15/2023]
Abstract
Microalgae have the highest capability to fix the atmospheric carbon and wastewater-derived nutrients to produce high-value bioproducts including lipids and carotenoids. However, their lower titers and single-product-oriented biomass processing have made the overall process expensive. Hence, increased metabolite titer and processing of the biomass for more than one product are required to ensure the commercial robustness of the algal biorefinery. In this study, a newly isolated algal strain was identified as Bracteacoccus pseudominor BERC09 through phylogenetic analysis based on the 18S rRNA gene sequence. Basic characterization of the strain revealed its promising potential to produce carotenoids and lipids. The lipids and carotenoid biosynthesis pathways of BERC09 were further triggered by manipulating the abiotic factors including nitrogen sources (NaNO3, KNO3, NH4Cl, Urea), nitrogen concentrations (0.06-0.36 gL-1), light intensity (150 μmolm-2s-1 to 300 μmolm-2s-1), and light quality (white and blue). Resultantly, 300 μmolm-2s-1 of blue light yielded 0.768 gL-1 of biomass, 8.4 mgg-1 of carotenoids, and 390 mgg-1 of lipids, and supplementation of 0.36 gL-1 of KNO3 further improved metabolism and yielded 0.814 gL-1 of biomass, 11.86 mgg-1 of carotenoids, and 424 mgg-1 of lipids. Overall, the optimal combination of light and nitrogen concurrently improved biomass, carotenoids, and lipids by 3.5-fold, 6-fold, and 4-fold than control, respectively. Besides, the excellent glycoproteins-based self-flocculation ability of the strain rendered an easier harvesting via gravity sedimentation. Hence, this biomass can be processed in a cascading fashion to use this strain as a candidate for a multiproduct biorefinery to achieve commercial robustness and environmental sustainability.
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Affiliation(s)
- Sana Malik
- Department of Bioinformatics & Biotechnology, Government College University Faisalabad, Faisalabad, Pakistan
| | - Muhammad Umer Farooq Ashraf
- Department of Bioinformatics & Biotechnology, Government College University Faisalabad, Faisalabad, Pakistan
| | - Ayesha Shahid
- Department of Bioinformatics & Biotechnology, Government College University Faisalabad, Faisalabad, Pakistan
| | - Muhammad Rizwan Javed
- Department of Bioinformatics & Biotechnology, Government College University Faisalabad, Faisalabad, Pakistan
| | - Aqib Zafar Khan
- State Key Laboratory of Microbial Metabolism, Joint International Research Laboratory of Metabolic & Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China
| | - Muhammad Usman
- School of Chemical Engineering, Zhengzhou University, Zhengzhou, 450001, China
| | - Arthi Manivannan
- Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Chennai, India
| | - Muhammad Aamer Mehmood
- Department of Bioinformatics & Biotechnology, Government College University Faisalabad, Faisalabad, Pakistan.
| | - Ghulam Abbas Ashraf
- Department of Physics, Zhejiang Normal University, Zhejiang, 321004, Jinhua, China.
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Han SI, Jeon MS, Ahn JW, Choi YE. Establishment of ultrasonic stimulation to enhance growth of Haematococcus lacustris. BIORESOURCE TECHNOLOGY 2022; 360:127525. [PMID: 35760247 DOI: 10.1016/j.biortech.2022.127525] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Revised: 06/22/2022] [Accepted: 06/23/2022] [Indexed: 06/15/2023]
Abstract
In this study, ultrasonication at a frequency of 40 kHz was used to shorten the sonication period and enhance the growth of Haematococcus lacustris. To confirm the optimal conditions, the effects of ultrasound output and treatment interval were examined. Under optimal conditions (20 W and 15-day cycle), the maximum cell density and chlorophyll content were 66.75 × 104 cells mL-1 and 36.54 mg g-1, respectively, which were increased by 50.00% and 39.01%, respectively, compared to the control. Transmission electron microscopy analysis showed that ultrasonication caused tiny cracks in the W4 and W6 strata but did not disrupt the inner W2 layer. Additionally, RT-qPCR analysis showed that ultrasonication upregulated both cell division and nitrogen uptake. No difference were detected in the composition or quantity of fatty acids. This study demonstrates a novel ultrasonic approach for enhancing the growth of H. lacustris.
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Affiliation(s)
- Sang-Il Han
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup 56212, Republic of Korea
| | - Min Seo Jeon
- Division of Environmental Science & Ecological Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Joon-Woo Ahn
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup 56212, Republic of Korea
| | - Yoon-E Choi
- Division of Environmental Science & Ecological Engineering, Korea University, Seoul 02841, Republic of Korea.
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Lee SA, Kim M, Esterhuizen M, Le VV, Kang M, Ko SR, Oh HM, Kim YJ, Ahn CY. An acceleration of carotenoid production and growth of Haematococcus lacustris induced by host-microbiota network interaction. Microbiol Res 2022; 262:127097. [PMID: 35751943 DOI: 10.1016/j.micres.2022.127097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 06/13/2022] [Accepted: 06/15/2022] [Indexed: 02/07/2023]
Abstract
Haematococcus lacustris is a chlamydomonadalean with high biotechnological interest owing to its capacity to produce astaxanthin, a valuable secondary carotenoid with extraordinary antioxidation properties. However, its prolonged growth has limited its utility commercially. Thus, rapid growth to attain high densities of H. lacustris cells optimally producing astaxanthin is an essential biotechnological target to facilitate profitable commercialisation. Our study focused on characterising the bacterial communities associated with the alga's phycosphere by metagenomics. Subsequently, we altered the bacterial consortia in combined co-culture with key beneficial bacteria to optimise the growth of H. lacustris. The algal biomass increased by up to 2.1-fold in co-cultures, leading to a 1.6-fold increase in the astaxanthin yield. This study attempted to significantly improve the H. lacustris growth rate and biomass yield via Next-Generation Sequencing analysis and phycosphere bacterial augmentation, highlighting the possibility to overcome the hurdles associated with astaxanthin production by H. lacustris at a commercial scale.
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Affiliation(s)
- Sang-Ah Lee
- Environmental Safety Group, Korea Institute of Science and Technology (KIST) Europe, Saarbrücken 66123, Germany; Cell Factory Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea; Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Minsik Kim
- Cell Factory Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Maranda Esterhuizen
- Environmental Safety Group, Korea Institute of Science and Technology (KIST) Europe, Saarbrücken 66123, Germany; Helsinki Institute of Sustainability Science (HELSUS), Fabianinkatu 33, 00014 Helsinki, Finland; University of Helsinki, Ecosystems and Environment Research Programme, Faculty of Biological and Environmental Sciences, Niemenkatu 73, 15140 Lahti, Finland; University of Manitoba, Clayton H. Riddell Faculty of Environment, Earth, and Resources, Wallace Building, 125 Dysart Road, Winnipeg MB R3T 2N2, Canada
| | - Ve Van Le
- Cell Factory Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea; Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Mingyeong Kang
- Cell Factory Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea; Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - So-Ra Ko
- Cell Factory Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea
| | - Hee-Mock Oh
- Cell Factory Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea; Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
| | - Young Jun Kim
- Environmental Safety Group, Korea Institute of Science and Technology (KIST) Europe, Saarbrücken 66123, Germany.
| | - Chi-Yong Ahn
- Cell Factory Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon 34141, Republic of Korea; Department of Environmental Biotechnology, KRIBB School of Biotechnology, University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea.
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Padri M, Boontian N, Teaumroong N, Piromyou P, Piasai C. Co-culture of microalga Chlorella sorokiniana with syntrophic Streptomyces thermocarboxydus in cassava wastewater for wastewater treatment and biodiesel production. BIORESOURCE TECHNOLOGY 2022; 347:126732. [PMID: 35074466 DOI: 10.1016/j.biortech.2022.126732] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 01/13/2022] [Accepted: 01/15/2022] [Indexed: 06/14/2023]
Abstract
This study aimed to conduct a co-culture of a microalga and syntrophic actinomycetes to treat cassava a biogas effluent wastewater and enhance biodiesel production. Streptomyces thermocarboxydus strain BMI 10 produced the greatest effect on biomass production by Chlorella sorokiniana strain P21. Maximal algal biomass production and total lipid yield were increased when strain BMI 10 was co-cultured (by 21 and 25 %, respectively). Furthermore, the nutrient removal efficiency of P21 was not significantly different under sterilized and unsterilized conditions. Harvestability of the strain was also increased under both conditions. Analysis of the amount and composition of fatty acids from this co-culture biomass revealed that it was quite satisfactory for biodiesel production (54.11-61.52% saturated fatty acids with a 0.59-0.82 degree of unsaturation). Overall, the results showed the co-culture of the alga and bacterium is a holistic enhancement that couples wastewater treatment with biodiesel production.
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Affiliation(s)
- Mohamad Padri
- School of Environmental Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | - Nittaya Boontian
- School of Environmental Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand.
| | - Neung Teaumroong
- School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | - Pongdet Piromyou
- School of Biotechnology, Institute of Agricultural Technology, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
| | - Chatlada Piasai
- School of Environmental Engineering, Institute of Engineering, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand
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12
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Park YH, Han SI, Oh B, Kim HS, Jeon MS, Kim S, Choi YE. Microalgal secondary metabolite productions as a component of biorefinery: A review. BIORESOURCE TECHNOLOGY 2022; 344:126206. [PMID: 34715342 DOI: 10.1016/j.biortech.2021.126206] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 10/19/2021] [Accepted: 10/20/2021] [Indexed: 06/13/2023]
Abstract
The interest in developing microalgae for industrial use has been increasing because of concerns about the depletion of petroleum resources and securing sustainable energy sources. Microalgae have high biomass productivity and short culture periods. However, despite these advantages, various barriers need to be overcome for industrial applications. Microalgal cultivation has a high unit price, thus rendering industrial application difficult. It is indispensably necessary to co-produce their primary and secondary metabolites to compensate for these shortcomings. In this regard, this article reviews the following aspects, (1) co-production of primary and secondary metabolites in microalgae, (2) induction methods for the promotion of the biosynthesis of secondary metabolites, and (3) perspectives on the co-production and co-extraction of primary and secondary metabolites. This paper presents various approaches for producing useful metabolites from microalgae and suggests strategies that can be utilized for the co-production of primary and secondary metabolites.
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Affiliation(s)
- Yun Hwan Park
- Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Sang-Il Han
- Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea; Institute of Green Manufacturing Technology, Korea University, Seoul 02841, Republic of Korea
| | - Byeolnim Oh
- Department of Electronic Engineering, Kwangwoon University, Seoul 01897, Republic of Korea
| | - Hyun Soo Kim
- Department of Electronic Engineering, Kwangwoon University, Seoul 01897, Republic of Korea
| | - Min Seo Jeon
- Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea
| | - Sok Kim
- Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea; OJEong Resilience Institute, Korea University, Seoul 02841, Republic of Korea
| | - Yoon-E Choi
- Division of Environmental Science and Ecological Engineering, Korea University, Seoul 02841, Republic of Korea.
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13
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Palacios OA, López BR, de-Bashan LE. Microalga Growth-Promoting Bacteria (MGPB): A formal term proposed for beneficial bacteria involved in microalgal–bacterial interactions. ALGAL RES 2022. [DOI: 10.1016/j.algal.2021.102585] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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14
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Tanweer S, Dash K, Panda B. Enhanced biomass production of Synechocystis sp. PCC 6803 by two associated bacteria Paenibacillus camelliae and Curtobacterium ammoniigenes. Arch Microbiol 2021; 204:66. [PMID: 34940910 DOI: 10.1007/s00203-021-02711-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 10/22/2021] [Accepted: 11/15/2021] [Indexed: 10/19/2022]
Abstract
Synechocystis sp. PCC 6803 grown continuously in a 5-L photo-bioreactor for 20 months was found to have associated consortia with heterotrophic microorganisms. Two strains of bacteria were isolated from the long-term cultures of cyanobacteria with the aim to test whether their presence affects cyanobacterial growth and metabolism. The two strains were phylogenetically identified as Paenibacillus camelliae and Curtobacterium ammoniigenes, respectively. Co-culturing the Synechocystis sp. with either of the isolates under photoautotrophic and photoheterotrophic conditions exerted a statistically significant growth enhancement effect on cyanobacteria. Under co-culture experiments, the addition of P. camelliae resulted in a four-fold higher biomass yield with a considerable decrease in the stationary period. The growth was more pronounced on the addition of acetate to the culture media. Growth-enhancing factors like indole acetic acid (IAA) and siderophores were detected in the co-culture conditions which proved to be the main driving force in boosting cyanobacterial growth. Thus, the cyanobacteria-bacteria consortia can be very useful for augmenting biomass production by circumventing the time factor which can be further exploited for various biotechnological applications.
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Affiliation(s)
- Sadaf Tanweer
- Microbiology Research Laboratory, Department of Botany, Utkal University, Bhubaneswar, Odisha, India
| | - Karisma Dash
- Microbiology Research Laboratory, Department of Botany, Utkal University, Bhubaneswar, Odisha, India
| | - Bhabatarini Panda
- Microbiology Research Laboratory, Department of Botany, Utkal University, Bhubaneswar, Odisha, India.
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15
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Lin H, Li Y, Hill RT. Microalgal and bacterial auxin biosynthesis: implications for algal biotechnology. Curr Opin Biotechnol 2021; 73:300-307. [PMID: 34619482 DOI: 10.1016/j.copbio.2021.09.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 09/03/2021] [Accepted: 09/12/2021] [Indexed: 12/21/2022]
Abstract
Optimization of microalgal growth and high-value metabolite production are key steps in microalgal mass culture for the algae industry. An emerging technology is the use of phytohormones, like indole-3-acetic acid (IAA), to promote microalgal growth. This requires an understanding of the biosynthesis of IAA in microalgae-bacteria associations and its function in regulating algal physiology and metabolite production. We review the current advances in understanding of microalgal and bacterial auxin biosynthesis and their implications for algal biotechnology.
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Affiliation(s)
- Hanzhi Lin
- Institute of Marine and Environmental Technology, University of Maryland Center for Environmental Science, Baltimore, MD, USA
| | - Yantao Li
- Institute of Marine and Environmental Technology, University of Maryland Center for Environmental Science, Baltimore, MD, USA
| | - Russell T Hill
- Institute of Marine and Environmental Technology, University of Maryland Center for Environmental Science, Baltimore, MD, USA.
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16
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Hoke AK, Reynoso G, Smith MR, Gardner MI, Lockwood DJ, Gilbert NE, Wilhelm SW, Becker IR, Brennan GJ, Crider KE, Farnan SR, Mendoza V, Poole AC, Zimmerman ZP, Utz LK, Wurch LL, Steffen MM. Genomic signatures of Lake Erie bacteria suggest interaction in the Microcystis phycosphere. PLoS One 2021; 16:e0257017. [PMID: 34550975 PMCID: PMC8457463 DOI: 10.1371/journal.pone.0257017] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 08/20/2021] [Indexed: 11/18/2022] Open
Abstract
Microbial interactions in harmful algal bloom (HAB) communities have been examined in marine systems, but are poorly studied in fresh waters. To investigate HAB-microbe interactions, we isolated bacteria with close associations to bloom-forming cyanobacteria, Microcystis spp., during a 2017 bloom in the western basin of Lake Erie. The genomes of five isolates (Exiguobacterium sp. JMULE1, Enterobacter sp. JMULE2, Deinococcus sp. JMULE3, Paenibacillus sp. JMULE4, and Acidovorax sp. JMULE5.) were sequenced on a PacBio Sequel system. These genomes ranged in size from 3.1 Mbp (Exiguobacterium sp. JMULE1) to 5.7 Mbp (Enterobacter sp. JMULE2). The genomes were analyzed for genes relating to critical metabolic functions, including nitrogen reduction and carbon utilization. All five of the sequenced genomes contained genes that could be used in potential signaling and nutrient exchange between the bacteria and cyanobacteria such as Microcystis. Gene expression signatures of algal-derived carbon utilization for two isolates were identified in Microcystis blooms in Lake Erie and Lake Tai (Taihu) at low levels, suggesting these organisms are active and may have a functional role during Microcystis blooms in aggregates, but were largely missing from whole water samples. These findings build on the growing evidence that the bacterial microbiome associated with bloom-forming algae have the functional potential to contribute to nutrient exchange within bloom communities and interact with important bloom formers like Microcystis.
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Affiliation(s)
- Alexa K. Hoke
- James Madison University, Harrisonburg, VA, United States of America
| | - Guadalupe Reynoso
- James Madison University, Harrisonburg, VA, United States of America
- Virginia Tech, Blacksburg, VA, United States of America
| | - Morgan R. Smith
- James Madison University, Harrisonburg, VA, United States of America
- Texas A&M University, College Station, TX, United States of America
| | - Malia I. Gardner
- James Madison University, Harrisonburg, VA, United States of America
| | | | - Naomi E. Gilbert
- James Madison University, Harrisonburg, VA, United States of America
- University of Tennessee, Knoxville, TN, United States of America
| | | | | | - Grant J. Brennan
- James Madison University, Harrisonburg, VA, United States of America
| | | | - Shannon R. Farnan
- James Madison University, Harrisonburg, VA, United States of America
| | - Victoria Mendoza
- James Madison University, Harrisonburg, VA, United States of America
| | - Alison C. Poole
- James Madison University, Harrisonburg, VA, United States of America
| | | | - Lucy K. Utz
- James Madison University, Harrisonburg, VA, United States of America
| | - Louie L. Wurch
- James Madison University, Harrisonburg, VA, United States of America
| | - Morgan M. Steffen
- James Madison University, Harrisonburg, VA, United States of America
- * E-mail:
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17
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Combined Production of Astaxanthin and β-Carotene in a New Strain of the Microalga Bracteacoccus aggregatus BM5/15 (IPPAS C-2045) Cultivated in Photobioreactor. BIOLOGY 2021; 10:biology10070643. [PMID: 34356498 PMCID: PMC8301135 DOI: 10.3390/biology10070643] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 07/02/2021] [Accepted: 07/08/2021] [Indexed: 11/17/2022]
Abstract
Carotenoids astaxanthin and β-carotene are widely used natural antioxidants. They are key components of functional food, cosmetics, drugs and animal feeding. They hold leader positions on the world carotenoid market. In current work, we characterize the new strain of the green microalga Bracteacoccus aggregatus BM5/15 and propose the method of its culturing in a bubble-column photobioreactor for simultaneous production of astaxanthin and β-carotene. Culture was monitored by light microscopy and pigment kinetics. Fatty acid profile was evaluated by tandem gas-chromatography-mass spectrometry. Pigments were obtained by the classical two-stage scheme of autotrophic cultivation. At the first, vegetative, stage biomass accumulation occurred. Maximum specific growth rate and culture productivity at this stage were 100-200 mg∙L-1∙day-1, and 0.33 day-1, respectively. At the second, inductive, stage carotenoid synthesis was promoted. Maximal carotenoid fraction in the biomass was 2.2-2.4%. Based on chromatography data, astaxanthin and β-carotene constituted 48 and 13% of total carotenoid mass, respectively. Possible pathways of astaxanthin synthesis are proposed based on carotenoid composition. Collectively, a new strain B. aggregatus BM5/15 is a potential biotechnological source of two natural antioxidants, astaxanthin and β-carotene. The results give the rise for further works on optimization of B. aggregatus cultivation on an industrial scale.
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18
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Toward the Enhancement of Microalgal Metabolite Production through Microalgae-Bacteria Consortia. BIOLOGY 2021; 10:biology10040282. [PMID: 33915681 PMCID: PMC8065533 DOI: 10.3390/biology10040282] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 03/19/2021] [Accepted: 03/25/2021] [Indexed: 12/13/2022]
Abstract
Engineered mutualistic consortia of microalgae and bacteria may be a means of assembling a novel combination of metabolic capabilities with potential biotechnological advantages. Microalgae are promising organisms for the sustainable production of metabolites of commercial interest, such as lipids, carbohydrates, pigments, and proteins. Several studies reveal that microalgae growth and cellular storage of these metabolites can be enhanced significantly by co-cultivation with growth-promoting bacteria. This review summarizes the state of the art of microalgae-bacteria consortia for the production of microalgal metabolites. We discuss the current knowledge on microalgae-bacteria mutualism and the mechanisms of bacteria to enhance microalgae metabolism. Furthermore, the potential routes for a microalgae-bacteria biorefinery are outlined in an attempt to overcome the economic failures and negative energy balances of the existing production processes.
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19
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Peng H, de- Bashan LE, Higgins BT. Comparison of algae growth and symbiotic mechanisms in the presence of plant growth promoting bacteria and non-plant growth promoting bacteria. ALGAL RES 2021. [DOI: 10.1016/j.algal.2020.102156] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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20
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Chekanov K, Zaytseva A, Mamedov I, Solovchenko A, Lobakova E. The Dynamics of the Bacterial Community of the Photobioreactor-Cultivated Green Microalga Haematococcus lacustris during Stress-Induced Astaxanthin Accumulation. BIOLOGY 2021; 10:biology10020115. [PMID: 33557358 PMCID: PMC7915213 DOI: 10.3390/biology10020115] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Revised: 01/22/2021] [Accepted: 01/28/2021] [Indexed: 12/02/2022]
Abstract
Simple Summary The microalga Haematococcus lacustris is a source of the natural colorant astaxanthin, a powerful antioxidant and key component of cosmetics and animal feed. Haematococcus is cultivated in photobioreactors. It can obtain energy just from a light illuminating photobioreactor and uses inorganic salts and CO2 as sources for chemical elements. The most widespread approach for Haematococcus cultivation is the two stage scheme. At the first stage, biomass accumulation under favorable growth conditions occurs. At the second stage, the cells are subjected to stress inducing astaxanthin synthesis. Generally, the culture of Haematococcus is not axenic. It exists in the form of a community with bacteria constituting its microbiome. The information on photobioreactor-cultivated Haematococcus microbiome is scarce. We analyzed its dynamic during astaxanthin production by DNA metabarcoding and microscopic observations. The main results of the work include the characterization of the daily dynamic of this microbiome and the revealing of contact between microalgae and bacteria. These findings are of potential significance for biotechnology. On one hand, they provide an insight into possible bacterial contamination of the harvested algal biomass. On the other hand, they reveal the presence of a core microbiome or bacteria essential for the growth of the microalga existing in all Haematococcus cultures. Abstract Haematococcus lacustris is a natural source of a valuable ketocarotenoid astaxanthin. Under autotrophic growth conditions, it exists in the form of a community with bacteria. The close coexistence of these microorganisms raises two questions: how broad their diversity is and how they interact with the microalga. Despite the importance these issues, little is known about microorganisms existing in Haematococcus cultures. For the first time, we characterize the dynamic of the H. lacustris microbiome of the microbiome of Haematococcus (a changeover of the bacterial associated species as function of the time) cultivated autotrophically in a photobioreactor based on 16S rRNA metabarcoding data. We found that Proteobacteria and Bacteroidetes are predominant phyla in the community. The Caulobacter bacterium became abundant during astaxanthin accumulation. These data were supported by microscopy. We discuss possible roles and interactions of the community members. These findings are of potential significance for biotechnology. They provide an insight into possible bacterial contamination in algal biomass and reveal the presence of bacteria essential for the algal growth.
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Affiliation(s)
- Konstantin Chekanov
- Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, 119192 Moscow, Russia; (A.Z.); (A.S.); (E.L.)
- Centre for Humanities Research and Technology, National Research Nuclear University MEPhI, 31 Kashirskoye Highway, 115522 Moscow, Russia
- Correspondence:
| | - Anna Zaytseva
- Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, 119192 Moscow, Russia; (A.Z.); (A.S.); (E.L.)
| | - Ilgar Mamedov
- Shemyakin and Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, 117997 Moscow, Russia;
| | - Alexei Solovchenko
- Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, 119192 Moscow, Russia; (A.Z.); (A.S.); (E.L.)
- Institute of Natural Sciences, Derzahvin Tambov State University, 39200 Tambov, Russia
| | - Elena Lobakova
- Faculty of Biology, Lomonosov Moscow State University, 1-12 Leninskie Gory, 119192 Moscow, Russia; (A.Z.); (A.S.); (E.L.)
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21
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Park BS, Erdner DL, Bacosa HP, Liu Z, Buskey EJ. Potential effects of bacterial communities on the formation of blooms of the harmful dinoflagellate Prorocentrum after the 2014 Texas City "Y" oil spill (USA). HARMFUL ALGAE 2020; 95:101802. [PMID: 32439059 DOI: 10.1016/j.hal.2020.101802] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 03/30/2020] [Accepted: 04/02/2020] [Indexed: 06/11/2023]
Abstract
The association between phytoplankton blooms and oil spills is still controversial despite numerous studies. Surprisingly, to date, there have been no studies on the effect of bacterial communities (BCs) exposed to crude oil on phytoplankton growth, even though crude oil changes BCs, which can then affect phytoplankton growth and species composition. Co-culture with crude oil-exposed BCs significantly stimulated the growth of Prorocentrum texanum in the laboratory. To gain more direct evidence, oil-degrading bacteria from oil-contaminated sediment collected after the Texas City "Y" oil spill were isolated, and changes in dinoflagellate growth when co-cultured with single bacterial isolates was investigated. The oil-degrading bacterial isolates significantly stimulated the growth of dinoflagellates (axenic and xenic cultures) through releasing growth-promoting substances. This study provides new evidence for the potential role of oil-degrading bacteria in the formation of phytoplankton blooms after an oil spill.
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Affiliation(s)
- Bum Soo Park
- Marine Science Institute, University of Texas at Austin, Port Aransas, TX 78373, USA; Marine Ecosystem Research Center, Korea Institute of Ocean Science and Technology, Busan 49111, South Korea.
| | - Deana L Erdner
- Marine Science Institute, University of Texas at Austin, Port Aransas, TX 78373, USA
| | - Hernando P Bacosa
- Marine Science Institute, University of Texas at Austin, Port Aransas, TX 78373, USA
| | - Zhanfei Liu
- Marine Science Institute, University of Texas at Austin, Port Aransas, TX 78373, USA
| | - Edward J Buskey
- Marine Science Institute, University of Texas at Austin, Port Aransas, TX 78373, USA
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