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Su F, Zhao B, Dhondt-Cordelier S, Vaillant-Gaveau N. Plant-Growth-Promoting Rhizobacteria Modulate Carbohydrate Metabolism in Connection with Host Plant Defense Mechanism. Int J Mol Sci 2024; 25:1465. [PMID: 38338742 PMCID: PMC10855160 DOI: 10.3390/ijms25031465] [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: 12/10/2023] [Revised: 01/08/2024] [Accepted: 01/09/2024] [Indexed: 02/12/2024] Open
Abstract
Plant-growth-promoting rhizobacteria (PGPR) could potentially enhance photosynthesis and benefit plant growth by improving soil nutrient uptake and affecting plant hormone balance. Several recent studies have unveiled a correlation between alterations in photosynthesis and host plant resistance levels. Photosynthesis provides materials and energy for plant growth and immune defense and affects defense-related signaling pathways. Photosynthetic organelles, which could be strengthened by PGPR inoculation, are key centers for defense signal biosynthesis and transmission. Although endophytic PGPRs metabolize plant photosynthates, they can increase soluble sugar levels and alternate sugar type and distribution. Soluble sugars clearly support plant growth and can act as secondary messengers under stressed conditions. Overall, carbohydrate metabolism modifications induced by PGPR may also play a key role in improving plant resistance. We provide a concise overview of current knowledge regarding PGPR-induced modulation in carbohydrate metabolism under both pathogen-infected and pathogen-free conditions. We highlight PGPR application as a cost-saving strategy amidst unpredictable pathogen pressures.
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Affiliation(s)
- Fan Su
- Institute of Agro-Product Safety and Nutrition, Tianjin Academy of Agricultural Sciences, Tianjin 300071, China;
| | - Bin Zhao
- State Key Laboratory of North China Crop Improvement and Regulation, College of Plant Protection, Hebei Agricultural University, Baoding 071001, China;
| | - Sandrine Dhondt-Cordelier
- Unité de Recherche Résistance Induite et Bioprotection des Plantes—USC INRAE 1488, Université de Reims Champagne Ardenne, 51100 Reims, France;
| | - Nathalie Vaillant-Gaveau
- Unité de Recherche Résistance Induite et Bioprotection des Plantes—USC INRAE 1488, Université de Reims Champagne Ardenne, 51100 Reims, France;
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2
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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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3
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Yu Q, Pei X, Wei Y, Naveed S, Wang S, Chang M, Zhang C, Ge Y. The roles of bacteria in resource recovery, wastewater treatment and carbon fixation by microalgae-bacteria consortia: A critical review. ALGAL RES 2022. [DOI: 10.1016/j.algal.2022.102938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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4
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Iqbal K, Saxena A, Pande P, Tiwari A, Chandra Joshi N, Varma A, Mishra A. Microalgae-bacterial granular consortium: Striding towards sustainable production of biohydrogen coupled with wastewater treatment. BIORESOURCE TECHNOLOGY 2022; 354:127203. [PMID: 35462016 DOI: 10.1016/j.biortech.2022.127203] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 04/13/2022] [Accepted: 04/18/2022] [Indexed: 06/14/2023]
Abstract
Anthropogenic activities have drastically affected the environment, leading to increased waste accumulation in atmospheric bodies, including water. Wastewater treatment is an energy-consuming process and typically requires thousands of kilowatt hours of energy. This enormous energy demand can be fulfilled by utilizing the microbial electrolysis route to breakdown organic pollutants in wastewater which produces clean water and biohydrogen as a by-product of the reaction. Microalgae are the promising microorganism for the biohydrogen production, and it has been investigated that the interaction between microalgae and bacteria can be used to boost the yield of biohydrogen. Consortium of algae and bacteria resulting around 50-60% more biohydrogen production compared to the biohydrogen production of algae and bacteria separately. This review summarises the recent development in different microalgae-bacteria granular consortium systems successfully employed for biohydrogen generation. We also discuss the limitations in biohydrogen production and factors affecting its production from wastewater.
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Affiliation(s)
- Khushboo Iqbal
- Amity Institute of Microbial Technology, Amity University Uttar Pradesh, Noida 201301, India
| | - Abhishek Saxena
- Diatom Research Laboratory, Amity Institute of Biotechnology, Amity University, Noida, Uttar Pradesh 201301, India
| | - Priyanshi Pande
- Amity Institute of Microbial Technology, Amity University Uttar Pradesh, Noida 201301, India
| | - Archana Tiwari
- Diatom Research Laboratory, Amity Institute of Biotechnology, Amity University, Noida, Uttar Pradesh 201301, India
| | - Naveen Chandra Joshi
- Amity Institute of Microbial Technology, Amity University Uttar Pradesh, Noida 201301, India
| | - Ajit Varma
- Amity Institute of Microbial Technology, Amity University Uttar Pradesh, Noida 201301, India
| | - Arti Mishra
- Amity Institute of Microbial Technology, Amity University Uttar Pradesh, Noida 201301, India.
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Barbosa-Nuñez JA, Palacios OA, de-Bashan LE, Snell-Castro R, Corona-González RI, Choix FJ. Active indole-3-acetic acid biosynthesis by the bacterium Azospirillum brasilense cultured under a biogas atmosphere enables its beneficial association with microalgae. J Appl Microbiol 2022; 132:3650-3663. [PMID: 35233885 DOI: 10.1111/jam.15509] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 02/11/2022] [Accepted: 02/26/2022] [Indexed: 11/29/2022]
Abstract
AIMS This study assessed, at the physiological and molecular levels, the effect of biogas on indole-3-acetic acid (IAA) biosynthesis by Azospirillum brasilense as well as the impact of this bacterium during CO2 fixation from biogas by Chlorella vulgaris and Scenedesmus obliquus. METHODS AND RESULTS IpdC gene expression, IAA production, and the growth of A. brasilense cultured under air (control) and biogas (treatment) were evaluated. The results demonstrated that A. brasilense had a better growth capacity and IAA production (105.7 ± 10.3 μg ml-1 ) when cultured under biogas composed of 25% CO2 + 75% methane (CH4 ) with respect to the control (72.4 ± 7.9 μg ml-1 ), although the ipdC gene expression level was low under the stressful condition generated by biogas. Moreover, this bacterium was able to induce a higher cell density and CO2 fixation rate from biogas by C. vulgaris (0.27 ± 0.08 g l-1 d-1 ) and S. obliquus (0.22 ± 0.08 g l-1 d-1 ). CONCLUSIONS This study demonstrated that A. brasilense has the capacity to grow and actively maintain its main microalgal growth-promoting mechanism when cultured under biogas and positively influence CO2 fixation from the biogas of C. vulgaris and S. obliquus. SIGNIFICANCE AND IMPACT OF THE STUDY These findings broaden research in the field of Azospirillum-microalga interactions and the prevalence of Azospirillum in environmental and ecological topics in addition to supporting the uses of plant growth-promoting bacteria to enhance biotechnological strategies for biogas upgrading.
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Affiliation(s)
- J A Barbosa-Nuñez
- Departamento de Ingeniería Química, CUCEI-Universidad de Guadalajara, Guadalajara, Jalisco, México
| | - O A Palacios
- Facultad de Ciencias químicas, Universidad Autónoma de Chihuahua, Circuito interior S/N, Chihuahua, Chihuahua, Mexico.,Centro de Investigaciones Biológicas del Noroeste (CIBNOR), La Paz, B.C.S., Mexico
| | - L E de-Bashan
- Centro de Investigaciones Biológicas del Noroeste (CIBNOR), La Paz, B.C.S., Mexico.,The Bashan Institute of Science, Auburn, AL, USA.,Departament of Entomology and Plant Pathology, 301 Funchess Hall, Auburn University, Auburn, AL, USA
| | - R Snell-Castro
- Departamento de Ingeniería Química, CUCEI-Universidad de Guadalajara, Guadalajara, Jalisco, México
| | | | - F J Choix
- Facultad de Ciencias químicas, Universidad Autónoma de Chihuahua, Circuito interior S/N, Chihuahua, Chihuahua, Mexico.,CONACYT - Universidad Autónoma de Chihuahua, Circuito interior S/N, Chihuahua, Chihuahua, Mexico
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6
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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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7
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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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8
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Bacillus velezensis: A Treasure House of Bioactive Compounds of Medicinal, Biocontrol and Environmental Importance. FORESTS 2021. [DOI: 10.3390/f12121714] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Bacillus velezensis gram-positive bacterium, is frequently isolated from diverse niches mainly soil, water, plant roots, and fermented foods. B. velezensis is ubiquitous, non-pathogenic and endospore forming. Being frequently isolated from diverse plant holobionts it is considered host adapted microorganism and recognized of high economic importance given its ability to promote plant growth under diverse biotic and abiotic stress conditions. Additionally, the species suppress many plant diseases, including bacterial, oomycete, and fungal diseases. It is also able after plant host root colonization to induce unique physiological situation of host plant called primed state. Primed host plants are able to respond more rapidly and/or effectively to biotic or abiotic stress. Moreover, B. velezenis have the ability to resist diverse environmental stresses and help host plants to cope with, including metal and xenobiotic stresses. Within species B. velezensis strains have unique abilities allowing them to adopt different life styles. Strain level abilities knowledge is warranted and could be inferred using the ever-expanding new genomes list available in genomes databases. Pangenome analysis and subsequent identification of core, accessory and unique genomes is actually of paramount importance to decipher species full metabolic capacities and fitness across diverse environmental conditions shaping its life style. Despite the crucial importance of the pan genome, its assessment among large number of strains remains sparse and systematic studies still needed. Extensive knowledge of the pan genome is needed to translate genome sequencing efforts into developing more efficient biocontrol agents and bio-fertilizers. In this study, a genome survey of B. velezensis allowed us to (a) highlight B. velezensis species boundaries and show that Bacillus suffers taxonomic imprecision that blurs the debate over species pangenome; (b) identify drivers of their successful acquisition of specific life styles and colonization of new niches; (c) describe strategies they use to promote plant growth and development; (d) reveal the unlocked strain specific orphan secondary metabolite gene clusters (biosynthetic clusters with corresponding metabolites unknown) that product identification is still awaiting to amend our knowledge of their putative role in suppression of pathogens and plant growth promotion, and (e) to describe a dynamic pangenome with a secondary metabolite rich accessory genome.
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Cassan FD, Coniglio A, Amavizca E, Maroniche G, Cascales E, Bashan Y, de-Bashan LE. The Azospirillum brasilense type VI secretion system promotes cell aggregation, biocontrol protection against phytopathogens and attachment to the microalgae Chlorella sorokiniana. Environ Microbiol 2021; 23:6257-6274. [PMID: 34472164 DOI: 10.1111/1462-2920.15749] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 08/25/2021] [Accepted: 08/28/2021] [Indexed: 01/26/2023]
Abstract
The plant-growth-promoting bacterium Azospirillum brasilense is able to associate with the microalgae Chlorella sorokiniana. Attachment of A. brasilense increases the metabolic performances of the microalgae. Recent genome analyses have revealed that the A. brasilense Az39 genome contains two complete sets of genes encoding type VI secretion systems (T6SS), including the T6SS1 that is induced by the indole-3-acetic acid (IAA) phytohormone. The T6SS is a multiprotein machine, widespread in Gram-negative bacteria, that delivers protein effectors in both prokaryotic and eukaryotic cells. Here we show that the A. brasilense T6SS is required for Chlorella-Azospirillum synthetic mutualism. Our data demonstrate that the T6SS is an important determinant to promote production of lipids, carbohydrates and photosynthetic pigments by the microalgae. We further show that this is likely due to the role of the T6SS during the attachment stage and for the production of IAA phytohormones. Finally, we demonstrate that the A. brasilense T6SS provides antagonistic activities against a number of plant pathogens such as Agrobacterium, Pectobacterium, Dickeya and Ralstonia species in vitro, suggesting that, in addition to promoting growth, A. brasilense might confer T6SS-dependent bio-control protection to microalgae and plants against bacterial pathogens.
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Affiliation(s)
- Fabricio D Cassan
- Laboratorio de Fisiología Vegetal y de la interacción Planta-Microorganismo, Instituto de Investigaciones Agrobiotecnológicas (INIAB), Universidad Nacional de Río Cuarto, Córdoba, Argentina
| | - Anahí Coniglio
- Laboratorio de Fisiología Vegetal y de la interacción Planta-Microorganismo, Instituto de Investigaciones Agrobiotecnológicas (INIAB), Universidad Nacional de Río Cuarto, Córdoba, Argentina
| | - Edgar Amavizca
- Environmental Microbiology Group, Northwestern Center for Biological Research (CIBNOR), La Paz, Mexico
| | - Guillermo Maroniche
- Facultad de Ciencias Agrarias, Universidad Nacional de Mar del Plata, Buenos Aires, Argentina
| | - Eric Cascales
- Laboratoire d'Ingénierie des Systèmes Macromoléculaires, Institut de Microbiologie, Bioénergies et Biotechnologie, Aix-Marseille Université - CNRS UMR7255, Marseille, France
| | - Yoav Bashan
- Environmental Microbiology Group, Northwestern Center for Biological Research (CIBNOR), La Paz, Mexico.,The Bashan Institute of Science, Auburn, AL, USA
| | - Luz E de-Bashan
- Environmental Microbiology Group, Northwestern Center for Biological Research (CIBNOR), La Paz, Mexico.,The Bashan Institute of Science, Auburn, AL, USA.,Department of Entomology and Plant Pathology, 301 Funchess Hall, Auburn University, Auburn, AL, USA
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Lakshmikandan M, Wang S, Murugesan AG, Saravanakumar M, Selvakumar G. Co-cultivation of Streptomyces and microalgal cells as an efficient system for biodiesel production and bioflocculation formation. BIORESOURCE TECHNOLOGY 2021; 332:125118. [PMID: 33866154 DOI: 10.1016/j.biortech.2021.125118] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/27/2021] [Accepted: 03/29/2021] [Indexed: 06/12/2023]
Abstract
The phytohormone producing Streptomyces rosealbus MTTC 12,951 (S.R) and green microalga Chlorella vulgaris MSU-AGM 14 (C.V) were cultivated in co-culture system to evaluate exogenous hormonal activity. Biosynthesis of indole-3-acetic acid (IAA) and their precursors were quantitatively evaluated by employing High Performance Liquid Chromatography (HPLC). The concentration of IAA (0.72 ± 0.02 µg mL-1) was observed to be elevated in co-cultivation system due to symbiotic interaction between Streptomyces and microalgae. In exchange, microalgae produced adequate volume of tryptophan (Trp) to induce IAA biosynthesis. The Trp stress in late exponential phase encouraged lipid accumulation (175 ± 10 mg g-1). The bioflocculation property of microalgae ensures potential and economic viable harvesting process by reducing 148% input energy compared to conventional method. The overall results evidenced that C.V co-cultivation with S.R exhibits promotional behavior and serves as a promising cultivation process for microalgae in terms of cost efficiency and energy conservation.
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Affiliation(s)
- M Lakshmikandan
- School of Energy and Power Engineering, Jiangsu University, Jiangsu 212013, China
| | - Shuang Wang
- School of Energy and Power Engineering, Jiangsu University, Jiangsu 212013, China.
| | - A G Murugesan
- Sri Paramakalyani Centre of Excellence in Environmental Sciences, Manonmaniam Sundaranar University, Alwarkurichi 627412, Tamil Nadu, India
| | - M Saravanakumar
- Sri Paramakalyani Centre of Excellence in Environmental Sciences, Manonmaniam Sundaranar University, Alwarkurichi 627412, Tamil Nadu, India
| | - G Selvakumar
- Sri Paramakalyani Centre of Excellence in Environmental Sciences, Manonmaniam Sundaranar University, Alwarkurichi 627412, Tamil Nadu, India
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12
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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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14
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Lopez BR, Palacios OA, Bashan Y, Hernández-Sandoval FE, de-Bashan LE. Riboflavin and lumichrome exuded by the bacterium Azospirillum brasilense promote growth and changes in metabolites in Chlorella sorokiniana under autotrophic conditions. ALGAL RES 2019. [DOI: 10.1016/j.algal.2019.101696 10.1016/j.algal.2019.101696] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Lopez BR, Palacios OA, Bashan Y, Hernández-Sandoval FE, de-Bashan LE. Riboflavin and lumichrome exuded by the bacterium Azospirillum brasilense promote growth and changes in metabolites in Chlorella sorokiniana under autotrophic conditions. ALGAL RES 2019. [DOI: 10.1016/j.algal.2019.101696] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Toyama T, Hanaoka T, Yamada K, Suzuki K, Tanaka Y, Morikawa M, Mori K. Enhanced production of biomass and lipids by Euglena gracilis via co-culturing with a microalga growth-promoting bacterium, Emticicia sp. EG3. BIOTECHNOLOGY FOR BIOFUELS 2019; 12:205. [PMID: 31695747 PMCID: PMC6822413 DOI: 10.1186/s13068-019-1544-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Accepted: 08/17/2019] [Indexed: 05/03/2023]
Abstract
BACKGROUND Euglena gracilis, a unicellular flagellated microalga, is regarded as one of the most promising species as microalgal feedstock for biofuels. Its lipids (mainly wax esters) are suitable for biodiesel and jet fuel. Culture of E. gracilis using wastewater effluent will improve the economics of E. gracilis biofuel production. Enhancement of the productivity of E. gracilis biomass is critical to creating a highly efficient biofuels production system. Certain bacteria have been found to promote microalgal growth by creating a favorable microenvironment. These bacteria have been characterized as microalgae growth-promoting bacteria (MGPB). Co-culture of microalgae with MGPB might offer an effective strategy to enhance microalgal biomass production in wastewater effluent culture systems. However, no MGPB has been identified to enhance the growth of E. gracilis. The objectives of this study were, therefore, to isolate and characterize the MGPB effective for E. gracilis and to demonstrate that the isolated MGPB indeed enhances the production of biomass and lipids by E. gracilis in wastewater effluent culture system. RESULTS A bacterium, Emticicia sp. EG3, which is capable of promoting the growth of microalga E. gracilis, was isolated from an E. gracilis-municipal wastewater effluent culture. Biomass production rate of E. gracilis was enhanced 3.5-fold and 3.1-fold by EG3 in the co-culture system using a medium of heat-sterilized and non-sterilized wastewater effluent, respectively, compared to growth in the same effluent culture but without EG3. Two-step culture system was examined as follows: E. gracilis was cultured with or without EG3 in wastewater effluent in the first step and was further grown in wastewater effluent in the second step. Production yields of biomass and lipids by E. gracilis were enhanced 3.2-fold and 2.9-fold, respectively, in the second step of the system in which E. gracilis was co-cultured with EG3 in the first step. CONCLUSION Emticicia sp. EG3 is the first MGPB for E. gracilis. Growth-promoting bacteria such as EG3 will be promising agents for enhancing E. gracilis biomass/biofuel productivities.
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Affiliation(s)
- Tadashi Toyama
- Graduate Faculty of Interdisciplinary Research, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi 400-8511 Japan
| | - Tsubasa Hanaoka
- Integrated Graduate School of Medicine, Engineering, and Agricultural Sciences, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi 400-8511 Japan
| | - Koji Yamada
- Euglena Co., Ltd., 5-29-11 Shiba Minato-ku, Tokyo, 108-0014 Japan
- Microalgae Production Control Technology Laboratory, RIKEN, 1-7-22, Suehiro, Tsurumi, Yookohama, Kanagawa 230-0045 Japan
| | - Kengo Suzuki
- Euglena Co., Ltd., 5-29-11 Shiba Minato-ku, Tokyo, 108-0014 Japan
- Microalgae Production Control Technology Laboratory, RIKEN, 1-7-22, Suehiro, Tsurumi, Yookohama, Kanagawa 230-0045 Japan
| | - Yasuhiro Tanaka
- Graduate Faculty of Interdisciplinary Research, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi 400-8511 Japan
| | - Masaaki Morikawa
- Division of Biosphere Science, Graduate School of Environmental Science, Hokkaido University, Kita-10 Nishi-5, Kita-ku, Sapporo, 060-0810 Japan
| | - Kazuhiro Mori
- Graduate Faculty of Interdisciplinary Research, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi 400-8511 Japan
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Zhang X, Xie S, Han J, Zhou Y, Liu C, Zhou Z, Wang F, Cheng Z, Zhang J, Hu Y, Hao Z, Li M, Zhang D, Yong H, Huang Y, Weng J, Li X. Integrated transcriptome, small RNA, and degradome analysis reveals the complex network regulating starch biosynthesis in maize. BMC Genomics 2019; 20:574. [PMID: 31296166 PMCID: PMC6625009 DOI: 10.1186/s12864-019-5945-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2019] [Accepted: 06/30/2019] [Indexed: 12/18/2022] Open
Abstract
Background Starch biosynthesis in endosperm is a key process influencing grain yield and quality in maize. Although a number of starch biosynthetic genes have been well characterized, the mechanisms by which the expression of these genes is regulated, especially in regard to microRNAs (miRNAs), remain largely unclear. Results Sequence data for small RNAs, degradome, and transcriptome of maize endosperm at 15 and 25 d after pollination (DAP) from inbred lines Mo17 and Ji419, which exhibit distinct starch content and starch granule structure, revealed the mediation of starch biosynthetic pathways by miRNAs. Transcriptome analysis of these two lines indicated that 33 of 40 starch biosynthetic genes were differentially expressed, of which 12 were up-regulated in Ji419 at 15 DAP, one was up-regulated in Ji419 at 25 DAP, 14 were up-regulated in Ji419 at both 15 and 25 DAP, one was down-regulated in Ji419 at 15 DAP, two were down-regulated in Ji419 at 25 DAP, and three were up-regulated in Ji419 at 15 DAP and down-regulated in Ji419 at 25 DAP, compared with Mo17. Through combined analyses of small RNA and degradome sequences, 22 differentially expressed miRNAs were identified, including 14 known and eight previously unknown miRNAs that could target 35 genes. Furthermore, a complex co-expression regulatory network was constructed, in which 19 miRNAs could modulate starch biosynthesis in endosperm by tuning the expression of 19 target genes. Moreover, the potential operation of four miRNA-mediated pathways involving transcription factors, miR169a-NF-YA1-GBSSI/SSIIIa and miR169o-GATA9-SSIIIa/SBEIIb, was validated via analyses of expression pattern, transient transformation assays, and transactivation assays. Conclusion Our results suggest that miRNAs play a critical role in starch biosynthesis in endosperm, and that miRNA-mediated networks could modulate starch biosynthesis in this tissue. These results have provided important insights into the molecular mechanism of starch biosynthesis in developing maize endosperm. Electronic supplementary material The online version of this article (10.1186/s12864-019-5945-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xiaocong Zhang
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Sidi Xie
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China.,College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Jienan Han
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yu Zhou
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China.,College of Agronomy, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Chang Liu
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China.,College of Agronomy, Northeast Agricultural University, Harbin, Heilongjiang, China
| | - Zhiqiang Zhou
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Feifei Wang
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Zixiang Cheng
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Junjie Zhang
- College of Life Science, Sichuan Agricultural University, Ya'an, Sichuan, China
| | - Yufeng Hu
- College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Zhuanfang Hao
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Mingshun Li
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Degui Zhang
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Hongjun Yong
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yubi Huang
- College of Agronomy, Sichuan Agricultural University, Chengdu, Sichuan, China
| | - Jianfeng Weng
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China.
| | - Xinhai Li
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China.
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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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Lopez BR, Hernandez JP, Bashan Y, de-Bashan LE. Immobilization of microalgae cells in alginate facilitates isolation of DNA and RNA. J Microbiol Methods 2017; 135:96-104. [DOI: 10.1016/j.mimet.2017.02.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 02/10/2017] [Accepted: 02/10/2017] [Indexed: 11/16/2022]
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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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