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Choix FJ, Palacios OA, Mondragón-Cortez P, Ocampo-Alvarez H, Becerril-Espinosa A, Lara-González MA, Juárez-Carrillo E. Synergic association of the consortium Arthrospira maxima with the microalga growth-promoting bacterium Azospirillum cultured under the stressful biogas composition. Bioprocess Biosyst Eng 2024; 47:181-193. [PMID: 38231212 DOI: 10.1007/s00449-023-02947-5] [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: 09/27/2023] [Accepted: 11/12/2023] [Indexed: 01/18/2024]
Abstract
The present study evaluates the association of the blue-green microalga Arthrospira maxima (Spirulina), which is known for its CO2 fixation, biomass, and high-value metabolite production, with the microalga growth-promoting bacterium Azospirillum brasilense under the stressful composition of biogas. The results demonstrated that A. maxima co-cultured with A. brasilense under the high CO2 (25%) and methane (CH4; 75%) concentrations of biogas recorded a CO2 fixation rate of 0.24 ± 0.03 g L-1 days-1, thereby attaining a biomass production of 1.8 ± 0.03 g L-1. Similarly, the biochemical composition quality of this microalga enhanced the attainment of higher contents of carbohydrates, proteins, and phycocyanin than cultured alone. However, metabolites other than tryptophan (Trp) and indole-3-acetic acid could have supported this beneficial interaction. Overall, the results demonstrate that this prokaryotic consortium of A. maxima-A. brasilense established a synergic association under biogas, which represents a sustainable strategy to improve the bio-refinery capacity of this microalga and increase the usefulness of A. brasilense in multiple economic sectors.
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Affiliation(s)
- Francisco J Choix
- CONAHCYT - Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Circuito Universitario S/N, C.P. 31125, Chihuahua, Chihuahua, México.
| | - Oskar A Palacios
- Facultad de Ciencias Químicas, Universidad Autónoma de Chihuahua, Circuito Universitario S/N, C.P. 31125, Chihuahua, Chihuahua, México
| | - Pedro Mondragón-Cortez
- Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco A.C, Camino Arenero 1227, C.P. 45019, Zapopan, Jalisco, México
| | - Héctor Ocampo-Alvarez
- Departamento de Ecología, CUCBA-Universidad de Guadalajara, Ramón Padilla Sánchez 2100, C.P. 45200, Zapopan, Jalisco, México
| | - Amayaly Becerril-Espinosa
- CONAHCYT - Departamento de Ecología, CUCBA-Universidad de Guadalajara, Ramón Padilla Sánchez 2100, C.P. 45200, Zapopan, Jalisco, México
| | - Martha A Lara-González
- Departamento de Ecología, CUCBA-Universidad de Guadalajara, Ramón Padilla Sánchez 2100, C.P. 45200, Zapopan, Jalisco, México
| | - Eduardo Juárez-Carrillo
- Departamento de Ecología, CUCBA-Universidad de Guadalajara, Ramón Padilla Sánchez 2100, C.P. 45200, Zapopan, Jalisco, México
- Instituto de Limnología, CUCBA-Universidad de Guadalajara, Paseo de la Loma 22, C.P. 45920, Ajijic, Jalisco, México
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Liu X, Zhong X, Liao J, Ji P, Yang J, Cao Z, Duan X, Xiong J, Wang Y, Xu C, Yang H, Peng B, Jiang K. Exogenous abscisic acid improves grain filling capacity under heat stress by enhancing antioxidative defense capability in rice. BMC PLANT BIOLOGY 2023; 23:619. [PMID: 38057725 DOI: 10.1186/s12870-023-04638-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 11/28/2023] [Indexed: 12/08/2023]
Abstract
BACKGROUND Heat stress is a major restrictive factor that causes yield loss in rice. We previously reported the priming effect of abscisic acid (ABA) on rice for enhanced thermotolerance at the germination, seedling and heading stages. In the present study, we aimed to understand the priming effect and mechanism of ABA on grain filling capacity in rice under heat stress. RESULTS Rice plants were pretreated with distilled water, 50 μM ABA and 10 μM fluridone by leaf spraying at 8 d or 15 d after initial heading (AIH) stage and then were subjected to heat stress conditions of 38 °C day/30 °C night for 7 days, respectively. Exogenous ABA pretreatment significantly super-activated the ABA signaling pathway and improved the SOD, POD, CAT and APX enzyme activity levels, as well as upregulated the ROS-scavenging genes; and decreased the heat stress-induced ROS content (O2- and H2O2) by 15.0-25.5% in rice grain under heat stress. ABA pretreatment also increased starch synthetase activities in rice grain under heat stress. Furthermore, ABA pretreatment significantly improved yield component indices and grain yield by 14.4-16.5% under heat stress. ABA pretreatment improved the milling quality and the quality of appearance and decreased the incidence of chalky kernels and chalkiness in rice grain and improved the rice grain cooking quality by improving starch content and gel consistence and decreasing the amylose percentage under heat stress. The application of paraquat caused overaccumulation of ROS, decreased starch synthetase activities and ultimately decreased starch content and grain yield. Exogenous antioxidants decreased ROS overaccumulation and increased starch content and grain yield under heat stress. CONCLUSION Taken together, these results suggest that exogenous ABA has a potential priming effect for enhancing rice grain filling capacity under heat stress at grain filling stage mainly by inhibiting ROS overaccumulation and improving starch synthetase activities in rice grain.
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Affiliation(s)
- Xiaolong Liu
- College of Life Sciences and Resources and Environment, Yichun University, Jiangxi, 336000, Yichun, China.
- Engineering Technology Research Center of Jiangxi Universities and Colleges for Selenium Agriculture, Yichun University, Jiangxi, 336000, Yichun, China.
| | - Xin Zhong
- College of Life Sciences and Resources and Environment, Yichun University, Jiangxi, 336000, Yichun, China
| | - Jingpeng Liao
- College of Life Sciences and Resources and Environment, Yichun University, Jiangxi, 336000, Yichun, China
| | - Ping Ji
- College of Life Sciences and Resources and Environment, Yichun University, Jiangxi, 336000, Yichun, China
| | - Jinshuo Yang
- College of Life Sciences and Resources and Environment, Yichun University, Jiangxi, 336000, Yichun, China
| | - Zhiruo Cao
- College of Life Sciences and Resources and Environment, Yichun University, Jiangxi, 336000, Yichun, China
| | - Ximiao Duan
- College of Life Sciences and Resources and Environment, Yichun University, Jiangxi, 336000, Yichun, China
| | - Junru Xiong
- College of Life Sciences and Resources and Environment, Yichun University, Jiangxi, 336000, Yichun, China
| | - Ying Wang
- College of Life Sciences and Resources and Environment, Yichun University, Jiangxi, 336000, Yichun, China
| | - Chen Xu
- Institute of Agricultural Resources and Environment, Jilin Academy of Agriculture Sciences, Jilin, 130033, Changchun, China
| | - Hongtao Yang
- College of Life Sciences and Resources and Environment, Yichun University, Jiangxi, 336000, Yichun, China
- Engineering Technology Research Center of Jiangxi Universities and Colleges for Selenium Agriculture, Yichun University, Jiangxi, 336000, Yichun, China
| | - Bo Peng
- College of Life Sciences and Resources and Environment, Yichun University, Jiangxi, 336000, Yichun, China
- Engineering Technology Research Center of Jiangxi Universities and Colleges for Selenium Agriculture, Yichun University, Jiangxi, 336000, Yichun, China
| | - Kai Jiang
- College of Life Sciences and Resources and Environment, Yichun University, Jiangxi, 336000, Yichun, China
- Engineering Technology Research Center of Jiangxi Universities and Colleges for Selenium Agriculture, Yichun University, Jiangxi, 336000, Yichun, China
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Llamas A, Leon-Miranda E, Tejada-Jimenez M. Microalgal and Nitrogen-Fixing Bacterial Consortia: From Interaction to Biotechnological Potential. PLANTS (BASEL, SWITZERLAND) 2023; 12:2476. [PMID: 37447037 DOI: 10.3390/plants12132476] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 06/15/2023] [Accepted: 06/26/2023] [Indexed: 07/15/2023]
Abstract
Microalgae are used in various biotechnological processes, such as biofuel production due to their high biomass yields, agriculture as biofertilizers, production of high-value-added products, decontamination of wastewater, or as biological models for carbon sequestration. The number of these biotechnological applications is increasing, and as such, any advances that contribute to reducing costs and increasing economic profitability can have a significant impact. Nitrogen fixing organisms, often called diazotroph, also have great biotechnological potential, mainly in agriculture as an alternative to chemical fertilizers. Microbial consortia typically perform more complex tasks than monocultures and can execute functions that are challenging or even impossible for individual strains or species. Interestingly, microalgae and diazotrophic organisms are capable to embrace different types of symbiotic associations. Certain corals and lichens exhibit this symbiotic relationship in nature, which enhances their fitness. However, this relationship can also be artificially created in laboratory conditions with the objective of enhancing some of the biotechnological processes that each organism carries out independently. As a result, the utilization of microalgae and diazotrophic organisms in consortia is garnering significant interest as a potential alternative for reducing production costs and increasing yields of microalgae biomass, as well as for producing derived products and serving biotechnological purposes. This review makes an effort to examine the associations of microalgae and diazotrophic organisms, with the aim of highlighting the potential of these associations in improving various biotechnological processes.
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Affiliation(s)
- Angel Llamas
- Department of Biochemistry and Molecular Biology, Campus de Rabanales and Campus Internacional de Excelencia Agroalimentario (CeiA3), Edificio Severo Ochoa, University of Córdoba, 14071 Córdoba, Spain
| | - Esperanza Leon-Miranda
- Department of Biochemistry and Molecular Biology, Campus de Rabanales and Campus Internacional de Excelencia Agroalimentario (CeiA3), Edificio Severo Ochoa, University of Córdoba, 14071 Córdoba, Spain
| | - Manuel Tejada-Jimenez
- Department of Biochemistry and Molecular Biology, Campus de Rabanales and Campus Internacional de Excelencia Agroalimentario (CeiA3), Edificio Severo Ochoa, University of Córdoba, 14071 Córdoba, Spain
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de Carvalho Silvello MA, Severo Gonçalves I, Patrícia Held Azambuja S, Silva Costa S, Garcia Pereira Silva P, Oliveira Santos L, Goldbeck R. Microalgae-based carbohydrates: A green innovative source of bioenergy. BIORESOURCE TECHNOLOGY 2022; 344:126304. [PMID: 34752879 DOI: 10.1016/j.biortech.2021.126304] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 11/01/2021] [Accepted: 11/03/2021] [Indexed: 06/13/2023]
Abstract
Microalgae contribute significantly to the global carbon cycle through photosynthesis. Given their ability to efficiently convert solar energy and atmospheric carbon dioxide into chemical compounds, such as carbohydrates, and generate oxygen during the process, microalgae represent an excellent and feasible carbohydrate bioresource. Microalgae-based biofuels are technically viable and, delineate a green and innovative field of opportunity for bioenergy exploitation. Microalgal polysaccharides are one of the most versatile groups for biotechnological applications and its content can be increased by manipulating cultivation conditions. Microalgal carbohydrates can be used to produce a variety of biofuels, including bioethanol, biobutanol, biomethane, and biohydrogen. This review provides an overview of microalgal carbohydrates, focusing on their use as feedstock for biofuel production, highlighting the carbohydrate metabolism and approaches for their enhancement. Moreover, biofuels produced from microalgal carbohydrate are showed, in addition to a new bibliometric study of current literature on microalgal carbohydrates and their use.
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Affiliation(s)
- Maria Augusta de Carvalho Silvello
- Bioprocess and Metabolic Engineering Laboratory, School of Food Engineering, University of Campinas (UNICAMP), Campinas, São Paulo 13083-862, Brazil
| | - Igor Severo Gonçalves
- Bioprocess and Metabolic Engineering Laboratory, School of Food Engineering, University of Campinas (UNICAMP), Campinas, São Paulo 13083-862, Brazil
| | - Suéllen Patrícia Held Azambuja
- Bioprocess and Metabolic Engineering Laboratory, School of Food Engineering, University of Campinas (UNICAMP), Campinas, São Paulo 13083-862, Brazil
| | - Sharlene Silva Costa
- Laboratory of Biotechnology, School of Chemistry and Food, Federal University of Rio Grande, Rio Grande, RS 96203-900, Brazil
| | - Pedro Garcia Pereira Silva
- Laboratory of Biotechnology, School of Chemistry and Food, Federal University of Rio Grande, Rio Grande, RS 96203-900, Brazil
| | - Lucielen Oliveira Santos
- Laboratory of Biotechnology, School of Chemistry and Food, Federal University of Rio Grande, Rio Grande, RS 96203-900, Brazil
| | - Rosana Goldbeck
- Bioprocess and Metabolic Engineering Laboratory, School of Food Engineering, University of Campinas (UNICAMP), Campinas, São Paulo 13083-862, Brazil.
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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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Yong JJJY, Chew KW, Khoo KS, Show PL, Chang JS. Prospects and development of algal-bacterial biotechnology in environmental management and protection. Biotechnol Adv 2020; 47:107684. [PMID: 33387639 DOI: 10.1016/j.biotechadv.2020.107684] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 11/24/2020] [Accepted: 12/22/2020] [Indexed: 12/11/2022]
Abstract
The coexistence of algae and bacteria in nature dates back to the very early stages when life came into existence. The interaction between algae and bacteria plays an important role in the planet ecology, cycling nutrients, and feeding higher trophic levels, and have been evolving ever since. The emerging concept of algal-bacterial consortia is gaining attention, much towards environmental management and protection. Studies have shown that algal-bacterial synergy does not only promote carbon capture in wastewater bioremediation but also consequently produces biofuels from algal-bacterial biomass. This review has evaluated the optimistic prospects of algal-bacterial consortia in environmental remediation, biorefinery, carbon sequestration as well as its contribution to the production of high-value compounds. In addition, algal-bacterial consortia offer great potential in bloom control, dye removal, agricultural biofertilizers, and bioplastics production. This work also emphasizes the advancement of algal-bacterial biotechnology in environmental management through the incorporation of Industry Revolution 4.0 technologies. The challenges include its pathway to greener industry, competition with other food additive sources, societal acceptance, cost feasibility, environmental trade-off, safety and compatibility. Thus, there is a need for further in-depth research to ensure the environmental sustainability and feasibility of algal-bacterial consortia to meet numerous current and future needs of society in the long run.
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Affiliation(s)
- Jasmine Jill Jia Yi Yong
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, 43500 Semenyih, Selangor Darul Ehsan, Malaysia
| | - Kit Wayne Chew
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Jalan Sunsuria, Bandar Sunsuria, 43900 Sepang, Selangor, Malaysia
| | - Kuan Shiong Khoo
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, 43500 Semenyih, Selangor Darul Ehsan, Malaysia
| | - Pau Loke Show
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, 43500 Semenyih, Selangor Darul Ehsan, Malaysia.
| | - Jo-Shu Chang
- Department of Chemical and Materials Engineering, Tunghai University, Taichung 407, Taiwan; Research Center for Smart Sustainable Circular Economy, Tunghai University, Taichung 407, Taiwan; Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan.
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7
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Feng S, Liu F, Zhu S, Feng P, Wang Z, Yuan Z, Shang C, Chen H. Performance of a microalgal-bacterial consortium system for the treatment of dairy-derived liquid digestate and biomass production. BIORESOURCE TECHNOLOGY 2020; 306:123101. [PMID: 32197188 DOI: 10.1016/j.biortech.2020.123101] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 02/27/2020] [Accepted: 02/28/2020] [Indexed: 06/10/2023]
Abstract
To enhance the treatment performance of dairy-derived liquid digestate (DLD) using microalgal-bacterial consortium system composed of Chlorella vulgaris and indigenous bacteria (CV), activated sludge was introduced to form a new microalgal-bacterial consortium system (Co-culture). The activated sludge shortened the lag phase and increased the specific growth rate of C. vulgaris (0.56 d-1). The biomass yield in the Co-culture was 2.72 g L-1, which was lower than that in the CV (3.24 g L-1), but the Co-culture had an improved COD (chemical oxygen demand) removal (25.26%) compared to the CV (13.59%). Quantitative PCR and metagenomic analyses demonstrated that microalgae also promoted bacterial growth, but influenced differently on the bacterial communities of indigenous bacteria and activated sludge. Compared with indigenous bacteria, activated sludge was more prone to forming a favorable symbiosis with C. vulgaris. These findings contribute to the construction of efficient microalgal-bacterial consortium system in wastewater treatment.
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Affiliation(s)
- Siran Feng
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China
| | - Fen Liu
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shunni Zhu
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China.
| | - Pingzhong Feng
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China
| | - Zhongming Wang
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China
| | - Zhenhong Yuan
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China
| | - Changhua Shang
- College of Life Science, Guangxi Normal University, Guilin, Guangxi 541006, China
| | - Huanjun Chen
- Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China; Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development, Guangzhou 510640, China; University of Chinese Academy of Sciences, Beijing 100049, China
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Ocampo-Alvarez H, Meza-Canales ID, Mateos-Salmón C, Rios-Jara E, Rodríguez-Zaragoza FA, Robles-Murguía C, Muñoz-Urias A, Hernández-Herrera RM, Choix-Ley FJ, Becerril-Espinosa A. Diving Into Reef Ecosystems for Land-Agriculture Solutions: Coral Microbiota Can Alleviate Salt Stress During Germination and Photosynthesis in Terrestrial Plants. FRONTIERS IN PLANT SCIENCE 2020; 11:648. [PMID: 32523601 PMCID: PMC7261865 DOI: 10.3389/fpls.2020.00648] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 04/27/2020] [Indexed: 06/11/2023]
Abstract
From their chemical nature to their ecological interactions, coral reef ecosystems have a lot in common with highly productive terrestrial ecosystems. While plants are responsible for primary production in the terrestrial sphere, the photosynthetic endosymbionts of corals are the key producers in reef communities. As in plants, coral microbiota have been suggested to stimulate the growth and physiological performance of the photosynthetic endosymbionts that provide energy sources to the coral. Among them, actinobacteria are some of the most probable candidates. To explore the potential of coral actinobacteria as plant biostimulants, we have analyzed the activity of Salinispora strains isolated from the corals Porites lobata and Porites panamensis, which were identified as Salinispora arenicola by 16S rRNA sequencing. We evaluated the effects of this microorganism on the germination, plant growth, and photosynthetic response of wild tobacco (Nicotiana attenuata) under a saline regime. We identified protective activity of this actinobacteria on seed germination and photosynthetic performance under natural light conditions. Further insights into the possible mechanism showed an endophytic-like symbiosis between N. attenuata roots and S. arenicola and 1-aminocyclopropane-1-carboxylate (ACC) deaminase activity by S. arenicola. We discuss these findings in the context of relevant ecological and physiological responses and biotechnological potential. Overall, our results will contribute to the development of novel biotechnologies to cope with plant growth under saline stress. Our study highlights the importance of understanding marine ecological interactions for the development of novel, strategic, and sustainable agricultural solutions.
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Affiliation(s)
- Héctor Ocampo-Alvarez
- Laboratorio de Ecología Molecular, Microbiología y Taxonomía, Departamento de Ecología, Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajara, Zapopan, Mexico
| | - Iván D. Meza-Canales
- Laboratorio de Evolución de Sistemas Ecológicos, Departamento de Ecología, Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajara, Zapopan, Mexico
- Laboratorio de Biología Molecular, Genómica y Proteómica, Instituto Transdisciplinar de Investigación y Servicios, Universidad de Guadalajara, Zapopan, Mexico
| | - Carolina Mateos-Salmón
- Laboratorio de Ecología Molecular, Microbiología y Taxonomía, Departamento de Ecología, Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajara, Zapopan, Mexico
| | - Eduardo Rios-Jara
- Laboratorio de Ecología Molecular, Microbiología y Taxonomía, Departamento de Ecología, Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajara, Zapopan, Mexico
| | - Fabián A. Rodríguez-Zaragoza
- Laboratorio de Ecología Molecular, Microbiología y Taxonomía, Departamento de Ecología, Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajara, Zapopan, Mexico
| | - Celia Robles-Murguía
- Laboratorio de Evolución de Sistemas Ecológicos, Departamento de Ecología, Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajara, Zapopan, Mexico
| | - Alejandro Muñoz-Urias
- Laboratorio de Evolución de Sistemas Ecológicos, Departamento de Ecología, Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajara, Zapopan, Mexico
| | - Rosalba Mireya Hernández-Herrera
- Laboratorio de Investigación en Biotecnología, Departamento de Botánica y Zoología, Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajara, Zapopan, Mexico
| | | | - Amayaly Becerril-Espinosa
- CONACYT, Departamento de Ecología, Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajara, Zapopan, Mexico
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Peng H, de-Bashan LE, Bashan Y, Higgins BT. Indole-3-acetic acid from Azosprillum brasilense promotes growth in green algae at the expense of energy storage products. ALGAL RES 2020. [DOI: 10.1016/j.algal.2020.101845] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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10
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Bilskey SR, Olendorff SA, Chmielewska K, Tucker KR. A Comparative Analysis of Methods for Quantitation of Sugars during the Corn-to-Ethanol Fermentation Process. SLAS Technol 2020; 25:494-504. [PMID: 32111129 DOI: 10.1177/2472630320908253] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The quantitation of sugars, including glucose, the primary fermentable sugar; maltose (DP2); and maltotriose (DP3), is a standard procedure during the corn-to-ethanol fermentation process. The quantitation of glucose by the Megazyme Assay utilizing glucose oxidase and peroxidase enzymes (GOPOD) and UV-Vis detection, high-performance liquid chromatography with refractive index detection (HPLC-RID), and liquid chromatography mass spectrometry (LC-MS) with electrospray ionization (ESI) and selected ion monitoring (SIM) was studied. Three biological flask fermentation replicates were analyzed every 12 h beginning at 14 h of fermentation (T14) until near completion of fermentation (T62).The method comparison results for glucose quantitation showed that the LC-MS SIM analysis had the lowest limit of quantitation (LOQ) at 2 ppm and the widest dynamic range of 2.7 orders of magnitude. The HPLC-RID analysis had a linear dynamic range (LDR) of 1.5 orders of magnitude with an LOQ of 1500 ppm. The Megazyme GOPOD analysis had an LDR of 0.9 orders of magnitude with an LOQ of 120 ppm.The HPLC-RID method was ideal for glucose quantitation when it was present in high concentrations. In contrast, maltose and maltotriose components were found to be present in lower concentrations, such that simultaneous quantitation of the three analytes is difficult during fermentation. The LC-MS method was the only method able to quantify the concentration of glucose successfully and simultaneously with DP2 and DP3 in all the fermentation broth samples collected from T14 through T62 during the corn-to-ethanol fermentation process.
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Affiliation(s)
- Sarah R Bilskey
- Department of Chemistry, Southern Illinois University Edwardsville, Edwardsville, IL, USA
| | - Samantha A Olendorff
- Department of Chemistry, Southern Illinois University Edwardsville, Edwardsville, IL, USA
| | - Karolina Chmielewska
- Department of Chemistry, Southern Illinois University Edwardsville, Edwardsville, IL, USA
| | - Kevin R Tucker
- Department of Chemistry, Southern Illinois University Edwardsville, Edwardsville, IL, USA
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Li R, Pan J, Yan M, Yang J, Qin W. Effects of mixotrophic cultivation on antioxidation and lipid accumulation of Chlorella vulgaris in wastewater treatment. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2019; 22:638-643. [PMID: 31847537 DOI: 10.1080/15226514.2019.1701982] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The effects of mixotrophic cultivation on antioxidation and lipid production of Chlorella vulgaris in wastewater treatment were analyzed. The biomass and lipid content of the mixotrophic C. vulgaris cultured in wastewater were higher compared with the autotrophic C. vulgaris cultured in BG-11. The mixotrophic C. vulgaris provided more fatty acids as the contents of total fatty acids rose. The unsaturated fatty acid/total fatty acid ratio under mixotrophic cultivation was up to 0.91, indicating the mixotrophic cultivation system was applicable for the generation of unsaturated fatty acids. Activities of antioxidant enzymes such as superoxide dismutase and glutathione peroxidase were improved after the addition of wastewater to algal cultures. Moreover, the activity and starch formation of ADP-glucose pyrophosphorylase decreased and the activity of acetyl-CoA carboxylase was enhanced, which contributed to the lipid production in the mixotrophic C. vulgaris in wastewater. This study suggests mixotrophic cultivation of microalgae in wastewater is an efficient way to improve lipid production.
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Affiliation(s)
- Ran Li
- College of Petroleum Engineering, Xi'an Shiyou University, Xi'an, China
- Technology Center of High Energy Gas Fracturing, CNPC, Xi'an Shiyou University, Xi'an, China
| | - Jie Pan
- College of Petroleum Engineering, Xi'an Shiyou University, Xi'an, China
| | - Minmin Yan
- PetroChina Qinghai Oilfield Company, Haixi, China
| | - Jiang Yang
- College of Petroleum Engineering, Xi'an Shiyou University, Xi'an, China
| | - Wenlong Qin
- College of Petroleum Engineering, Xi'an Shiyou University, Xi'an, China
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12
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Ramos-Ibarra JR, Snell-Castro R, Neria-Casillas JA, Choix FJ. Biotechnological potential of Chlorella sp. and Scenedesmus sp. microalgae to endure high CO2 and methane concentrations from biogas. Bioprocess Biosyst Eng 2019; 42:1603-1610. [DOI: 10.1007/s00449-019-02157-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2019] [Accepted: 06/04/2019] [Indexed: 10/26/2022]
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13
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Palacios OA, Lopez BR, Bashan Y, de-Bashan LE. Early Changes in Nutritional Conditions Affect Formation of Synthetic Mutualism Between Chlorella sorokiniana and the Bacterium Azospirillum brasilense. MICROBIAL ECOLOGY 2019; 77:980-992. [PMID: 30397795 DOI: 10.1007/s00248-018-1282-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Accepted: 10/25/2018] [Indexed: 05/20/2023]
Abstract
The effect of three different nutritional conditions during the initial 12 h of interaction between the microalgae Chlorella sorokiniana UTEX 2714 and the plant growth-promoting bacterium Azospirillum brasilense Cd on formation of synthetic mutualism was assessed by changes in population growth, production of signal molecules tryptophan and indole-3-acetic acid, starch accumulation, and patterns of cell aggregation. When the interaction was supported by a nutrient-rich medium, production of both signal molecules was detected, but not when this interaction began with nitrogen-free (N-free) or carbon-free (C-free) media. Overall, populations of bacteria and microalgae were larger when co-immobilized. However, the highest starch production was measured in C. sorokiniana immobilized alone and growing continuously in a C-free mineral medium. In this interaction, the initial nutritional condition influenced the time at which the highest accumulation of starch occurred in Chlorella, where the N-free medium induced faster starch production and the richer medium delayed its accumulation. Formation of aggregates made of microalgae and bacteria occurred in all nutritional conditions, with maximum at 83 h in mineral medium, and coincided with declining starch content. This study demonstrates that synthetic mutualism between C. sorokiniana and A. brasilense can be modulated by the initial nutritional condition, mainly by the presence or absence of nitrogen and carbon in the medium in which they are interacting.
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Affiliation(s)
- Oskar A Palacios
- Environmental Microbiology Group, Northwestern Center for Biological Research (CIBNOR), Av. IPN 195, 23096, La Paz, BCS, Mexico
- The Bashan Institute of Science, 1730 Post Oak Court, Auburn, AL, 36830, USA
| | - Blanca R Lopez
- Environmental Microbiology Group, Northwestern Center for Biological Research (CIBNOR), Av. IPN 195, 23096, La Paz, BCS, Mexico
- The Bashan Institute of Science, 1730 Post Oak Court, Auburn, AL, 36830, USA
| | - Yoav Bashan
- Environmental Microbiology Group, Northwestern Center for Biological Research (CIBNOR), Av. IPN 195, 23096, La Paz, BCS, Mexico
- The Bashan Institute of Science, 1730 Post Oak Court, Auburn, AL, 36830, USA
- Department of Entomology and Plant Pathology, Auburn University, 301 Funchess Hall, Auburn, AL, 36849, USA
| | - Luz E de-Bashan
- Environmental Microbiology Group, Northwestern Center for Biological Research (CIBNOR), Av. IPN 195, 23096, La Paz, BCS, Mexico.
- The Bashan Institute of Science, 1730 Post Oak Court, Auburn, AL, 36830, USA.
- Department of Entomology and Plant Pathology, Auburn University, 301 Funchess Hall, Auburn, AL, 36849, USA.
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Choix FJ, López-Cisneros CG, Méndez-Acosta HO. Azospirillum brasilense Increases CO 2 Fixation on Microalgae Scenedesmus obliquus, Chlorella vulgaris, and Chlamydomonas reinhardtii Cultured on High CO 2 Concentrations. MICROBIAL ECOLOGY 2018; 76:430-442. [PMID: 29327073 DOI: 10.1007/s00248-017-1139-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Accepted: 12/28/2017] [Indexed: 06/07/2023]
Abstract
Mutualism interactions of microalgae with other microorganisms are widely used in several biotechnological processes since symbiotic interaction improves biotechnological capabilities of the microorganisms involved. The interaction of the bacterium Azospirillum brasilense was assessed with three microalgae genus, Scenedesmus, Chlorella, and Chlamydomonas, during CO2 fixation under high CO2 concentrations. The results in this study have demonstrated that A. brasilense maintained a mutualistic interaction with the three microalgae assessed, supported by the metabolic exchange of indole-3-acetic acid (IAA) and tryptophan (Trp), respectively. Besides, CO2 fixation increased, as well as growth and cell compound accumulation, mainly carbohydrates, in each microalgae evaluated, interacting with the bacterium. Overall, these results propose the mutualism interaction of A. brasilense with microalgae for improving biotechnological processes based on microalgae as CO2 capture and their bio-refinery capacity.
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Affiliation(s)
- Francisco J Choix
- Departamento de Ingeniería Química, CUCEI-Universidad de Guadalajara, Blvd. M. García Barragán 1421, C.P. 44430, Guadalajara, Jalisco, Mexico.
- CONACYT - CUCEI-Universidad de Guadalajara, Blvd. M. García Barragán 1421, C.P. 44430, Guadalajara, Jalisco, Mexico.
| | - Cecilia Guadalupe López-Cisneros
- Departamento de Ingeniería Química, CUCEI-Universidad de Guadalajara, Blvd. M. García Barragán 1421, C.P. 44430, Guadalajara, Jalisco, Mexico
| | - Hugo Oscar Méndez-Acosta
- Departamento de Ingeniería Química, CUCEI-Universidad de Guadalajara, Blvd. M. García Barragán 1421, C.P. 44430, Guadalajara, Jalisco, Mexico
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Sharifi R, Ryu CM. Sniffing bacterial volatile compounds for healthier plants. CURRENT OPINION IN PLANT BIOLOGY 2018; 44:88-97. [PMID: 29579577 DOI: 10.1016/j.pbi.2018.03.004] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 03/09/2018] [Accepted: 03/09/2018] [Indexed: 05/19/2023]
Abstract
Bacterial volatile compounds (BVCs) are not waste or by-products of primary metabolism but rather have critical roles in the biology and ecological competence of bacteria. BVCs are exploited as a source of nutrients and information in plant-bacteria interactions. They target key points in plant physiology, activating downstream metabolic pathways by a domino effect. BVCs are an ancient signal and are involved in plant-bacteria communication, which was shaped during evolutionary history and established before the development of higher plants. This type of communication is not exclusive to mutualistic interactions, because pathogens also use volatiles to alter plant physiology. Here, fragmented information is drawn together to provide a clearer view of how BVCs affect such interactions.
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Affiliation(s)
- Rouhallah Sharifi
- Department of Plant Protection, College of Agriculture and Natural Resources, Razi University, Kermanshah, Iran
| | - Choong-Min Ryu
- Molecular Phytobacteriology Laboratory, Infectious Disease Research Center, KRIBB, Daejeon 34141, South Korea; Biosystem and Bioengineering Program, University of Science and Technology (UST), Daejeon 34141, South Korea.
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16
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Enhanced performance of the microalga Chlorella sorokiniana remotely induced by the plant growth-promoting bacteria Azospirillum brasilense and Bacillus pumilus. Sci Rep 2017; 7:41310. [PMID: 28145473 PMCID: PMC5286510 DOI: 10.1038/srep41310] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 12/12/2016] [Indexed: 12/20/2022] Open
Abstract
Remote effects (occurring without physical contact) of two plant growth-promoting bacteria (PGPB) Azospirillum brasilense Cd and Bacilus pumilus ES4 on growth of the green microalga Chlorella sorokiniana UTEX 2714 were studied. The two PGPB remotely enhanced the growth of the microalga, up to six-fold, and its cell volume by about three-fold. In addition to phenotypic changes, both bacteria remotely induced increases in the amounts of total lipids, total carbohydrates, and chlorophyll a in the cells of the microalga, indicating an alteration of the microalga’s physiology. The two bacteria produced large amounts of volatile compounds, including CO2, and the known plant growth-promoting volatile 2,3-butanediol and acetoin. Several other volatiles having biological functions in other organisms, as well as numerous volatile compounds with undefined biological roles, were detected. Together, these bacteria-derived volatiles can positively affect growth and metabolic parameters in green microalgae without physical attachment of the bacteria to the microalgae. This is a new paradigm on how PGPB promote growth of microalgae which may serve to improve performance of Chlorella spp. for biotechnological applications.
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Ye J, Song Z, Wang L, Zhu J. Metagenomic analysis of microbiota structure evolution in phytoremediation of a swine lagoon wastewater. BIORESOURCE TECHNOLOGY 2016; 219:439-444. [PMID: 27518033 DOI: 10.1016/j.biortech.2016.08.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 08/02/2016] [Accepted: 08/04/2016] [Indexed: 06/06/2023]
Abstract
Pytoremediation was studied in this project to treat swine manure lagoon wastewater characteristic of high concentrations of organic carbon, ammonium (N) and phosphorus (P). The impacts of introducing exogenous microalgae Chlorella into the lagoon wastewater on the removal of major nutrients and the transformation of the native wastewater microbiota structure were explored under two phytoremediation modes (shake flask and CO2-air bubbling). The results showed that the inoculation of microalgae could significantly enhance N and P removal. Metagenomic analysis of the native microbiota composition in the wastewater affected by algae inoculation revealed that a substantial population of algicidal bacteria was developed in the shake flask system, while in the CO2-air bubbling system, a niche for more mutualistic bacteria was created, which benefited the maximal algal growth with the simultaneous optimal N and P removal. To our knowledge, this study presents, the first reported case of applying metagenomic approach to a phytoremediation system treating real swine lagoon wastewater.
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Affiliation(s)
- Jianfeng Ye
- School of Forestry & Environmental Studies, Yale University, New Haven, CT 06511, United States
| | - Zhaofeng Song
- Shanghai Academy of Environmental Sciences, Shanghai 200233, China
| | - Liang Wang
- CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China.
| | - Jun Zhu
- Biological and Agricultural Engineering Department, University of Arkansas, Fayetteville, AR 72701, United States
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18
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Palacios OA, Choix FJ, Bashan Y, de-Bashan LE. Influence of tryptophan and indole-3-acetic acid on starch accumulation in the synthetic mutualistic Chlorella sorokiniana – Azospirillum brasilense system under heterotrophic conditions. Res Microbiol 2016; 167:367-79. [DOI: 10.1016/j.resmic.2016.02.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Revised: 09/07/2015] [Accepted: 02/15/2016] [Indexed: 01/08/2023]
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19
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Perez-Garcia O, Lear G, Singhal N. Metabolic Network Modeling of Microbial Interactions in Natural and Engineered Environmental Systems. Front Microbiol 2016; 7:673. [PMID: 27242701 PMCID: PMC4870247 DOI: 10.3389/fmicb.2016.00673] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 04/25/2016] [Indexed: 12/14/2022] Open
Abstract
We review approaches to characterize metabolic interactions within microbial communities using Stoichiometric Metabolic Network (SMN) models for applications in environmental and industrial biotechnology. SMN models are computational tools used to evaluate the metabolic engineering potential of various organisms. They have successfully been applied to design and optimize the microbial production of antibiotics, alcohols and amino acids by single strains. To date however, such models have been rarely applied to analyze and control the metabolism of more complex microbial communities. This is largely attributed to the diversity of microbial community functions, metabolisms, and interactions. Here, we firstly review different types of microbial interaction and describe their relevance for natural and engineered environmental processes. Next, we provide a general description of the essential methods of the SMN modeling workflow including the steps of network reconstruction, simulation through Flux Balance Analysis (FBA), experimental data gathering, and model calibration. Then we broadly describe and compare four approaches to model microbial interactions using metabolic networks, i.e., (i) lumped networks, (ii) compartment per guild networks, (iii) bi-level optimization simulations, and (iv) dynamic-SMN methods. These approaches can be used to integrate and analyze diverse microbial physiology, ecology and molecular community data. All of them (except the lumped approach) are suitable for incorporating species abundance data but so far they have been used only to model simple communities of two to eight different species. Interactions based on substrate exchange and competition can be directly modeled using the above approaches. However, interactions based on metabolic feedbacks, such as product inhibition and synthropy require extensions to current models, incorporating gene regulation and compounding accumulation mechanisms. SMN models of microbial interactions can be used to analyze complex “omics” data and to infer and optimize metabolic processes. Thereby, SMN models are suitable to capitalize on advances in high-throughput molecular and metabolic data generation. SMN models are starting to be applied to describe microbial interactions during wastewater treatment, in-situ bioremediation, microalgae blooms methanogenic fermentation, and bioplastic production. Despite their current challenges, we envisage that SMN models have future potential for the design and development of novel growth media, biochemical pathways and synthetic microbial associations.
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Affiliation(s)
- Octavio Perez-Garcia
- Department of Civil and Environmental Engineering, University of Auckland Auckland, New Zealand
| | - Gavin Lear
- School of Biological Sciences, The University of Auckland Auckland, New Zealand
| | - Naresh Singhal
- Department of Civil and Environmental Engineering, University of Auckland Auckland, New Zealand
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20
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Palacios OA, Gomez-Anduro G, Bashan Y, de-Bashan LE. Tryptophan, thiamine and indole-3-acetic acid exchange betweenChlorella sorokinianaand the plant growth-promoting bacteriumAzospirillum brasilense. FEMS Microbiol Ecol 2016; 92:fiw077. [DOI: 10.1093/femsec/fiw077] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/12/2016] [Indexed: 11/14/2022] Open
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21
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de-Bashan LE, Mayali X, Bebout BM, Weber PK, Detweiler AM, Hernandez JP, Prufert-Bebout L, Bashan Y. Establishment of stable synthetic mutualism without co-evolution between microalgae and bacteria demonstrated by mutual transfer of metabolites (NanoSIMS isotopic imaging) and persistent physical association (Fluorescent in situ hybridization). ALGAL RES 2016. [DOI: 10.1016/j.algal.2016.02.019] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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22
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Shen XF, Chu FF, Lam PKS, Zeng RJ. Biosynthesis of high yield fatty acids from Chlorella vulgaris NIES-227 under nitrogen starvation stress during heterotrophic cultivation. WATER RESEARCH 2015; 81:294-300. [PMID: 26081436 DOI: 10.1016/j.watres.2015.06.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 06/02/2015] [Indexed: 06/04/2023]
Abstract
In this study the heterotrophic cultivation of Chlorella vulgaris NIES-227 fed with glucose was investigated systematically using six media types; combinations of nitrogen repletion/depletion and phosphorus repletion/limitation/depletion. It was found that a high yield of fatty acids (0.88 of fed glucose-COD) and a high content of fatty acid methyl esters (FAMEs) (89% of dry weight) were obtained under nitrogen starved conditions. To our knowledge it is the first report on such high COD conversion yield and FAME content in microalgae. The dominant fatty acid (>50%) was methyl oleate (C18:1), a desirable component for biodiesel synthesis. FAME content under nitrogen starved conditions was significantly higher than under nitrogen sufficient conditions, while phosphorus had no significant influence, indicating that nitrogen starvation was the real "fatty acids trigger" in heterotrophic cultivation. These findings could simplify the downstream extraction process, such as the extrusion of oil from soybeans, and could reduce operating costs by improving the fatty acid yield from waste COD.
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Affiliation(s)
- Xiao-Fei Shen
- Advanced Laboratory for Environmental Research and Technology, USTC-CityU, Suzhou, PR China
| | - Fei-Fei Chu
- Advanced Laboratory for Environmental Research and Technology, USTC-CityU, Suzhou, PR China
| | - Paul K S Lam
- Advanced Laboratory for Environmental Research and Technology, USTC-CityU, Suzhou, PR China; State Key Laboratory in Marine Pollution, Department of Biology and Chemistry, City University of Hong Kong, Kowloon, Hong Kong
| | - Raymond J Zeng
- Advanced Laboratory for Environmental Research and Technology, USTC-CityU, Suzhou, PR China; CAS Key Laboratory of Urban Pollutant Conversion, Department of Chemistry, University of Science and Technology of China, Hefei 230026, PR China.
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Simas-Rodrigues C, Villela HDM, Martins AP, Marques LG, Colepicolo P, Tonon AP. Microalgae for economic applications: advantages and perspectives for bioethanol. JOURNAL OF EXPERIMENTAL BOTANY 2015; 66:4097-108. [PMID: 25873683 DOI: 10.1093/jxb/erv130] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Renewable energy has attracted significant interest in recent years as a result of sustainability, environmental impact, and socio-economic considerations. Given existing technological knowledge and based on projections relating to biofuels derived from microalgae, microalgal feedstock is considered to be one of the most important renewable energy sources potentially available for industrial production. Therefore, this review examines microalgal bioethanol technology, which converts biomass from microalgae to fuel, the chemical processes involved, and possible ways of increasing the bioethanol yield, such as abiotic factors and genetic manipulation of fermenting organisms.
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Affiliation(s)
- Cíntia Simas-Rodrigues
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Av. Professor Lineu Prestes, 748, 05508-000, São Paulo, Brazil
| | - Helena D M Villela
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Av. Professor Lineu Prestes, 748, 05508-000, São Paulo, Brazil
| | - Aline P Martins
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Av. Professor Lineu Prestes, 748, 05508-000, São Paulo, Brazil
| | - Luiza G Marques
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Av. Professor Lineu Prestes, 748, 05508-000, São Paulo, Brazil
| | - Pio Colepicolo
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, Av. Professor Lineu Prestes, 748, 05508-000, São Paulo, Brazil
| | - Angela P Tonon
- Los Alamos National Laboratory, Bioscience Division, PO Box M888, Los Alamos, NM 87545, USA
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24
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Meza B, de-Bashan LE, Hernandez JP, Bashan Y. Accumulation of intra-cellular polyphosphate in Chlorella vulgaris cells is related to indole-3-acetic acid produced by Azospirillum brasilense. Res Microbiol 2015; 166:399-407. [DOI: 10.1016/j.resmic.2015.03.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2014] [Revised: 03/10/2015] [Accepted: 03/11/2015] [Indexed: 10/23/2022]
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25
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Accumulation fatty acids of in Chlorella vulgaris under heterotrophic conditions in relation to activity of acetyl-CoA carboxylase, temperature, and co-immobilization with Azospirillum brasilense. Naturwissenschaften 2014; 101:819-30. [DOI: 10.1007/s00114-014-1223-x] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 08/04/2014] [Accepted: 08/06/2014] [Indexed: 11/25/2022]
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