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Chaisupa P, Rahman MM, Hildreth SB, Moseley S, Gatling C, Bryant MR, Helm RF, Wright RC. Genetically Encoded, Noise-Tolerant, Auxin Biosensors in Yeast. ACS Synth Biol 2024. [PMID: 39197086 DOI: 10.1021/acssynbio.4c00186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2024]
Abstract
Auxins are crucial signaling molecules that regulate the growth, metabolism, and behavior of various organisms, most notably plants but also bacteria, fungi, and animals. Many microbes synthesize and perceive auxins, primarily indole-3-acetic acid (IAA, referred to as auxin herein), the most prevalent natural auxin, which influences their ability to colonize plants and animals. Understanding auxin biosynthesis and signaling in fungi may allow us to better control interkingdom relationships and microbiomes from agricultural soils to the human gut. Despite this importance, a biological tool for measuring auxin with high spatial and temporal resolution has not been engineered in fungi. In this study, we present a suite of genetically encoded, ratiometric, protein-based auxin biosensors designed for the model yeast Saccharomyces cerevisiae. Inspired by auxin signaling in plants, the ratiometric nature of these biosensors enhances the precision of auxin concentration measurements by minimizing clonal and growth phase variation. We used these biosensors to measure auxin production across diverse growth conditions and phases in yeast cultures and calibrated their responses to physiologically relevant levels of auxin. Future work will aim to improve the fold change and reversibility of these biosensors. These genetically encoded auxin biosensors are valuable tools for investigating auxin biosynthesis and signaling in S. cerevisiae and potentially other yeast and fungi and will also advance quantitative functional studies of the plant auxin perception machinery, from which they are built.
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Affiliation(s)
- Patarasuda Chaisupa
- Department of Biological Systems Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Md Mahbubur Rahman
- Department of Biological Systems Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Sherry B Hildreth
- Fralin Life Sciences Institute, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Saede Moseley
- Department of Biological Systems Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Chauncey Gatling
- Department of Biological Systems Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Matthew R Bryant
- Department of Biological Systems Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Richard F Helm
- Fralin Life Sciences Institute, Virginia Tech, Blacksburg, Virginia 24061, United States
- Department of Biochemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - R Clay Wright
- Department of Biological Systems Engineering, Virginia Tech, Blacksburg, Virginia 24061, United States
- Fralin Life Sciences Institute, Virginia Tech, Blacksburg, Virginia 24061, United States
- The Translational Plant Sciences Center (TPSC), Virginia Tech, Blacksburg, Virginia 24061, United States
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2
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Ahsan SM, Injamum-Ul-Hoque M, Das AK, Rahman MM, Mollah MMI, Paul NC, Choi HW. Plant-Entomopathogenic Fungi Interaction: Recent Progress and Future Prospects on Endophytism-Mediated Growth Promotion and Biocontrol. PLANTS (BASEL, SWITZERLAND) 2024; 13:1420. [PMID: 38794490 PMCID: PMC11124879 DOI: 10.3390/plants13101420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2024] [Revised: 05/17/2024] [Accepted: 05/18/2024] [Indexed: 05/26/2024]
Abstract
Entomopathogenic fungi, often acknowledged primarily for their insecticidal properties, fulfill diverse roles within ecosystems. These roles encompass endophytism, antagonism against plant diseases, promotion of the growth of plants, and inhabitation of the rhizosphere, occurring both naturally and upon artificial inoculation, as substantiated by a growing body of contemporary research. Numerous studies have highlighted the beneficial aspects of endophytic colonization. This review aims to systematically organize information concerning the direct (nutrient acquisition and production of phytohormones) and indirect (resistance induction, antibiotic and secondary metabolite production, siderophore production, and mitigation of abiotic and biotic stresses) implications of endophytic colonization. Furthermore, a thorough discussion of these mechanisms is provided. Several challenges, including isolation complexities, classification of novel strains, and the impact of terrestrial location, vegetation type, and anthropogenic reluctance to use fungal entomopathogens, have been recognized as hurdles. However, recent advancements in biotechnology within microbial research hold promising solutions to many of these challenges. Ultimately, the current constraints delineate potential future avenues for leveraging endophytic fungal entomopathogens as dual microbial control agents.
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Affiliation(s)
- S. M. Ahsan
- Department of Plant Medicals, Andong National University, Andong 36729, Republic of Korea;
| | - Md. Injamum-Ul-Hoque
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea; (M.I.-U.-H.); (A.K.D.)
| | - Ashim Kumar Das
- Department of Applied Biosciences, Kyungpook National University, Daegu 41566, Republic of Korea; (M.I.-U.-H.); (A.K.D.)
| | - Md. Mezanur Rahman
- Department of Plant and Soil Science, Institute of Genomics for Crop Abiotic Stress Tolerance, Texas Tech University, Lubbock, TX 79409, USA;
| | - Md. Mahi Imam Mollah
- Department of Entomology, Patuakhali Science and Technology University, Dumki, Patuakhali 8602, Bangladesh;
| | - Narayan Chandra Paul
- Kumho Life Science Laboratory, Chonnam National University, Gwangju 61186, Republic of Korea;
| | - Hyong Woo Choi
- Department of Plant Medicals, Andong National University, Andong 36729, Republic of Korea;
- Institute of Cannabis Biotechnology, Andong National University, Andong 36729, Republic of Korea
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3
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Tang J, Li Y, Zhang L, Mu J, Jiang Y, Fu H, Zhang Y, Cui H, Yu X, Ye Z. Biosynthetic Pathways and Functions of Indole-3-Acetic Acid in Microorganisms. Microorganisms 2023; 11:2077. [PMID: 37630637 PMCID: PMC10459833 DOI: 10.3390/microorganisms11082077] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 08/08/2023] [Accepted: 08/10/2023] [Indexed: 08/27/2023] Open
Abstract
Indole-3-acetic acid (IAA) belongs to the family of auxin indole derivatives. IAA regulates almost all aspects of plant growth and development, and is one of the most important plant hormones. In microorganisms too, IAA plays an important role in growth, development, and even plant interaction. Therefore, mechanism studies on the biosynthesis and functions of IAA in microorganisms can promote the production and utilization of IAA in agriculture. This mini-review mainly summarizes the biosynthesis pathways that have been reported in microorganisms, including the indole-3-acetamide pathway, indole-3-pyruvate pathway, tryptamine pathway, indole-3-acetonitrile pathway, tryptophan side chain oxidase pathway, and non-tryptophan dependent pathway. Some pathways interact with each other through common key genes to constitute a network of IAA biosynthesis. In addition, functional studies of IAA in microorganisms, divided into three categories, have also been summarized: the effects on microorganisms, the virulence on plants, and the beneficial impacts on plants.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Zihong Ye
- Zhejiang Provincial Key Laboratory of Biometrology and Inspection & Quarantine, College of Life Sciences, China Jiliang University, Hangzhou 310018, China; (J.T.); (L.Z.)
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4
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Ramos-Garza J, Aguirre-Noyola JL, Bustamante-Brito R, Zelaya-Molina LX, Maldonado-Hernández J, Morales-Estrada AI, Resendiz-Venado Z, Palacios-Olvera J, Angeles-Gallegos T, Terreros-Moysen P, Cortés-Carvajal M, Martínez-Romero E. Mycobiota of Mexican Maize Landraces with Auxin-Producing Yeasts That Improve Plant Growth and Root Development. PLANTS (BASEL, SWITZERLAND) 2023; 12:1328. [PMID: 36987016 PMCID: PMC10058334 DOI: 10.3390/plants12061328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 02/26/2023] [Accepted: 03/10/2023] [Indexed: 06/19/2023]
Abstract
Compared to agrochemicals, bioinoculants based on plant microbiomes are a sustainable option for increasing crop yields and soil fertility. From the Mexican maize landrace "Raza cónico" (red and blue varieties), we identified yeasts and evaluated in vitro their ability to promote plant growth. Auxin production was detected from yeast isolates and confirmed using Arabidopsis thaliana plants. Inoculation tests were performed on maize, and morphological parameters were measured. Eighty-seven yeast strains were obtained (50 from blue corn and 37 from red corn). These were associated with three families of Ascomycota (Dothideaceae, Debaryomycetaceae, and Metschnikowiaceae) and five families of Basidiomycota (Sporidiobolaceae, Filobasidiaceae, Piskurozymaceae, Tremellaceae, and Rhynchogastremataceae), and, in turn, distributed in 10 genera (Clavispora, Rhodotorula, Papiliotrema, Candida, Suhomyces, Soliccocozyma, Saitozyma Holtermaniella, Naganishia, and Aeurobasidium). We identified strains that solubilized phosphate and produced siderophores, proteases, pectinases, and cellulases but did not produce amylases. Solicoccozyma sp. RY31, C. lusitaniae Y11, R. glutinis Y23, and Naganishia sp. Y52 produced auxins from L-Trp (11.9-52 µg/mL) and root exudates (1.3-22.5 µg/mL). Furthermore, they stimulated the root development of A. thaliana. Inoculation of auxin-producing yeasts caused a 1.5-fold increase in maize plant height, fresh weight, and root length compared to uninoculated controls. Overall, maize landraces harbor plant growth-promoting yeasts and have the potential for use as agricultural biofertilizers.
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Affiliation(s)
- Juan Ramos-Garza
- Escuela de Ciencias de la Salud, Campus Coyoacán, Universidad del Valle de México, Calzada de Tlalpan 3016/3058, Coapa, Ex Hacienda Coapa, Coyoacán 04910, Ciudad de México, Mexico
| | - José Luis Aguirre-Noyola
- Programa de Ecología Genómica, Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Av. Universidad s/n, Cuernavaca 62210, Morelos, Mexico
| | - Rafael Bustamante-Brito
- Programa de Ecología Genómica, Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Av. Universidad s/n, Cuernavaca 62210, Morelos, Mexico
| | - Lily X. Zelaya-Molina
- Laboratorio de Recursos Genéticos Microbianos, Centro Nacional de Recursos Genéticos-INIFAP, Boulevard de la Biodiversidad No. 400, Tepatitlán de Morelos 47600, Jalisco, Mexico
| | - Jessica Maldonado-Hernández
- Escuela de Ciencias de la Salud, Campus Coyoacán, Universidad del Valle de México, Calzada de Tlalpan 3016/3058, Coapa, Ex Hacienda Coapa, Coyoacán 04910, Ciudad de México, Mexico
| | - Aurea Itzel Morales-Estrada
- Escuela de Ciencias de la Salud, Campus Coyoacán, Universidad del Valle de México, Calzada de Tlalpan 3016/3058, Coapa, Ex Hacienda Coapa, Coyoacán 04910, Ciudad de México, Mexico
| | - Zoe Resendiz-Venado
- Laboratorio de Recursos Genéticos Microbianos, Centro Nacional de Recursos Genéticos-INIFAP, Boulevard de la Biodiversidad No. 400, Tepatitlán de Morelos 47600, Jalisco, Mexico
| | - Jacqueline Palacios-Olvera
- Escuela de Ciencias de la Salud, Campus Coyoacán, Universidad del Valle de México, Calzada de Tlalpan 3016/3058, Coapa, Ex Hacienda Coapa, Coyoacán 04910, Ciudad de México, Mexico
| | - Thania Angeles-Gallegos
- Escuela de Ciencias de la Salud, Campus Coyoacán, Universidad del Valle de México, Calzada de Tlalpan 3016/3058, Coapa, Ex Hacienda Coapa, Coyoacán 04910, Ciudad de México, Mexico
| | - Paola Terreros-Moysen
- Escuela de Ciencias de la Salud, Campus Coyoacán, Universidad del Valle de México, Calzada de Tlalpan 3016/3058, Coapa, Ex Hacienda Coapa, Coyoacán 04910, Ciudad de México, Mexico
| | - Manuel Cortés-Carvajal
- Escuela de Ciencias de la Salud, Campus Coyoacán, Universidad del Valle de México, Calzada de Tlalpan 3016/3058, Coapa, Ex Hacienda Coapa, Coyoacán 04910, Ciudad de México, Mexico
| | - Esperanza Martínez-Romero
- Programa de Ecología Genómica, Centro de Ciencias Genómicas, Universidad Nacional Autónoma de México, Av. Universidad s/n, Cuernavaca 62210, Morelos, Mexico
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5
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Sugarcane molasses as substrate to soil yeasts: Indole-3-acetic acid production and maize initial growth promotion. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2023. [DOI: 10.1016/j.bcab.2023.102618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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6
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Kuzmina LY, Gilvanova EA, Galimzyanova NF, Arkhipova TN, Ryabova AS, Aktuganov GE, Sidorova LV, Kudoyarova GR, Melent’ev AI. Characterization of the Novel Plant Growth-Stimulating Strain Advenella kashmirensis IB-K1 and Evaluation of Its Efficiency in Saline Soil. Microbiology (Reading) 2022. [DOI: 10.1134/s0026261722020072] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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7
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Menon N, Richmond D, Rahman MR, Menon BRK. Versatile and Facile One-Pot Biosynthesis for Amides and Carboxylic Acids in E. coli by Engineering Auxin Pathways of Plant Microbiomes. ACS Catal 2022. [DOI: 10.1021/acscatal.1c04901] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Navya Menon
- The Warwick Integrative Synthetic Biology Centre, The University of Warwick, Coventry CV4 7AL, U.K
- Collaborative Teaching Laboratory, The University of Birmingham, Birmingham B15 2TT, U.K
| | - Daniel Richmond
- The Warwick Integrative Synthetic Biology Centre, The University of Warwick, Coventry CV4 7AL, U.K
| | - Mohammad Rejaur Rahman
- The Warwick Integrative Synthetic Biology Centre, The University of Warwick, Coventry CV4 7AL, U.K
| | - Binuraj R. K. Menon
- The Warwick Integrative Synthetic Biology Centre, The University of Warwick, Coventry CV4 7AL, U.K
- School of Biological Sciences, The University of Portsmouth, Portsmouth PO1 2DY, U.K
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8
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Boya BR, Kumar P, Lee JH, Lee J. Diversity of the Tryptophanase Gene and Its Evolutionary Implications in Living Organisms. Microorganisms 2021; 9:microorganisms9102156. [PMID: 34683477 PMCID: PMC8537960 DOI: 10.3390/microorganisms9102156] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/09/2021] [Accepted: 10/12/2021] [Indexed: 12/11/2022] Open
Abstract
Tryptophanase encoded by the gene tnaA is a pyridoxal phosphate-dependent enzyme that catalyses the conversion of tryptophan to indole, which is commonly used as an intra- and interspecies signalling molecule, particularly by microbes. However, the production of indole is rare in eukaryotic organisms. A nucleotide and protein database search revealed tnaA is commonly reported in various Gram-negative bacteria, but that only a few Gram-positive bacteria and archaea possess the gene. The presence of tnaA in eukaryotes, particularly protozoans and marine organisms, demonstrates the importance of this gene in the animal kingdom. Here, we document the distribution of tnaA and its acquisition and expansion among different taxonomic groups, many of which are usually categorized as non-indole producers. This study provides an opportunity to understand the intriguing role played by tnaA, and its distribution among various types of organisms.
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9
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Petrillo C, Castaldi S, Lanzilli M, Selci M, Cordone A, Giovannelli D, Isticato R. Genomic and Physiological Characterization of Bacilli Isolated From Salt-Pans With Plant Growth Promoting Features. Front Microbiol 2021; 12:715678. [PMID: 34589073 PMCID: PMC8475271 DOI: 10.3389/fmicb.2021.715678] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 08/10/2021] [Indexed: 12/23/2022] Open
Abstract
Massive application of chemical fertilizers and pesticides has been the main strategy used to cope with the rising crop demands in the last decades. The indiscriminate use of chemicals while providing a temporary solution to food demand has led to a decrease in crop productivity and an increase in the environmental impact of modern agriculture. A sustainable alternative to the use of agrochemicals is the use of microorganisms naturally capable of enhancing plant growth and protecting crops from pests known as Plant-Growth-Promoting Bacteria (PGPB). Aim of the present study was to isolate and characterize PGPB from salt-pans sand samples with activities associated to plant fitness increase. To survive high salinity, salt-tolerant microbes produce a broad range of compounds with heterogeneous biological activities that are potentially beneficial for plant growth. A total of 20 halophilic spore-forming bacteria have been screened in vitro for phyto-beneficial traits and compared with other two members of Bacillus genus recently isolated from the rhizosphere of the same collection site and characterized as potential biocontrol agents. Whole-genome analysis on seven selected strains confirmed the presence of numerous gene clusters with PGP and biocontrol functions and of novel secondary-metabolite biosynthetic genes, which could exert beneficial impacts on plant growth and protection. The predicted biocontrol potential was confirmed in dual culture assays against several phytopathogenic fungi and bacteria. Interestingly, the presence of predicted gene clusters with known biocontrol functions in some of the isolates was not predictive of the in vitro results, supporting the need of combining laboratory assays and genome mining in PGPB identification for future applications.
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Affiliation(s)
- Claudia Petrillo
- Department of Biology, University of Naples Federico II, Complesso Universitario Monte S. Angelo, Naples, Italy
| | - Stefany Castaldi
- Department of Biology, University of Naples Federico II, Complesso Universitario Monte S. Angelo, Naples, Italy
| | | | - Matteo Selci
- Department of Biology, University of Naples Federico II, Complesso Universitario Monte S. Angelo, Naples, Italy
| | - Angelina Cordone
- Department of Biology, University of Naples Federico II, Complesso Universitario Monte S. Angelo, Naples, Italy
| | - Donato Giovannelli
- Department of Biology, University of Naples Federico II, Complesso Universitario Monte S. Angelo, Naples, Italy.,National Research Council - Institute of Marine Biological Resources and Biotechnologies (CNR-IRBIM), Ancona, Italy.,Department of Marine and Coastal Science, Rutgers University, New Brunswick, NJ, United States.,Department of Marine Chemistry & Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA, United States.,Earth-Life Science Institute, Tokyo Institute of Technology, Tokyo, Japan
| | - Rachele Isticato
- Department of Biology, University of Naples Federico II, Complesso Universitario Monte S. Angelo, Naples, Italy.,Interuniversity Center for Studies on Bioinspired Agro-Environmental Technology (BAT Center), Portici, Italy
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10
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Fang SY, Chen SY, Chen YY, Kuo TJ, Wen ZH, Chen YH, Hwang TL, Sung PJ. Natural Indoles From the Bacterium Pseudovibrio denitrificans P81 Isolated From a Marine Sponge, Aaptos Species. Nat Prod Commun 2021. [DOI: 10.1177/1934578x211033735] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
A new natural indole, vibrindole B (1), together with known analogs, vibrindole A (2), trisindoline (3), norharmane (4), and 3-(hydroxyacetyl)indole (5), produced by the bacterium Pseudovibrio denitrificans P81, were isolated from a sponge, Aaptos species. The structures of indoles 1 to 5 were established by spectroscopic methods. The proposed biosynthetic pathway of 1 to 5 is also discussed, starting from tryptophan. Moreover, indoles 1 to 3 were found to exhibit cytotoxicity toward T24 tumor cells with IC50 values of 1.71 ± 0.11, 4.53 ± 0.14, and 2.26 ± 0.26 µM, respectively.
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Affiliation(s)
- Shu-Yen Fang
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Sheng-Yuan Chen
- Department of Internal Medicine, Zuoying Branch of Kaohsiung Armed Forces General Hospital, Kaohsiung, Taiwan
| | - You-Ying Chen
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan
- National Museum of Marine Biology and Aquarium, Pingtung, Taiwan
| | - Tsu-Jen Kuo
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan
- School of Dentistry, Chung Shan Medical University, Taichung, Taiwan
- Department of Dentistry, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Zhi-Hong Wen
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan
- Institute of BioPharmaceutical Sciences, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - Yu-Hsin Chen
- National Museum of Marine Biology and Aquarium, Pingtung, Taiwan
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan, Taiwan
- Research Center for Chinese Herbal Medicine, Graduate Institute of Healthy Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan, Taiwan
- Department of Anaesthesiology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
- Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City, Taiwan
| | - Ping-Jyun Sung
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan
- National Museum of Marine Biology and Aquarium, Pingtung, Taiwan
- Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung, Taiwan
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan
- Ph.D. Program in Pharmaceutical Biotechnology, Fu Jen Catholic University, New Taipei, Taiwan
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11
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12
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Bunsangiam S, Thongpae N, Limtong S, Srisuk N. Large scale production of indole-3-acetic acid and evaluation of the inhibitory effect of indole-3-acetic acid on weed growth. Sci Rep 2021; 11:13094. [PMID: 34158557 PMCID: PMC8219710 DOI: 10.1038/s41598-021-92305-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Accepted: 06/02/2021] [Indexed: 12/02/2022] Open
Abstract
Indole-3-acetic acid (IAA) is the most common plant hormone of the auxin class and regulates various plant growth processes. The present study investigated IAA production by the basidiomycetous yeast Rhodosporidiobolus fluvialis DMKU-CP293 using the one-factor-at-a-time (OFAT) method and response surface methodology (RSM). IAA production was optimized in shake-flask culture using a cost-effective medium containing 4.5% crude glycerol, 2% CSL and 0.55% feed-grade l-tryptophan. The optimized medium resulted in a 3.3-fold improvement in IAA production and a 3.6-fold reduction in cost compared with those obtained with a non-optimized medium. Production was then scaled up to a 15-L bioreactor and to a pilot-scale (100-L) bioreactor based on the constant impeller tip speed (Vtip) strategy. By doing so, IAA was successfully produced at a concentration of 3569.32 mg/L at the pilot scale. To the best of our knowledge, this is the first report of pilot-scale IAA production by microorganisms. In addition, we evaluated the effect of crude IAA on weed growth. The results showed that weed (Cyperus rotundus L.) growth could be inhibited by 50 mg/L of crude IAA. IAA therefore has the potential to be developed as a herbicidal bioproduct to replace the chemical herbicides that have been banned in various countries, including Thailand.
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Affiliation(s)
- Sakaoduoen Bunsangiam
- Department of Microbiology, Faculty of Science, Kasetsart University, Chatuchak, Bangkok, 10900, Thailand
| | - Nutnaree Thongpae
- Department of Microbiology, Faculty of Science, Kasetsart University, Chatuchak, Bangkok, 10900, Thailand
| | - Savitree Limtong
- Department of Microbiology, Faculty of Science, Kasetsart University, Chatuchak, Bangkok, 10900, Thailand.,Academy of Science, Royal Society of Thailand, Bangkok, 10300, Thailand
| | - Nantana Srisuk
- Department of Microbiology, Faculty of Science, Kasetsart University, Chatuchak, Bangkok, 10900, Thailand.
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13
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Batista BD, Dourado MN, Figueredo EF, Hortencio RO, Marques JPR, Piotto FA, Bonatelli ML, Settles ML, Azevedo JL, Quecine MC. The auxin-producing Bacillus thuringiensis RZ2MS9 promotes the growth and modifies the root architecture of tomato (Solanum lycopersicum cv. Micro-Tom). Arch Microbiol 2021; 203:3869-3882. [PMID: 34013419 DOI: 10.1007/s00203-021-02361-z] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Revised: 03/19/2021] [Accepted: 05/04/2021] [Indexed: 12/28/2022]
Abstract
Strains of Bacillus thuringiensis (Bt) are commonly commercialized as bioinoculants for insect pest control, but their benefits go beyond their insecticidal property: they can act as plant growth-promoters. Auxins play a major role in the plant growth promotion. However, the mechanism of auxin production by the Bacilli group, and more specifically by Bt strains, is unclear. In previous work, the plant growth-promoting rhizobacterium (PGPR) B. thuringiensis strain RZ2MS9 increased the corn roots. This drew our attention to the strain's auxin production trait, earlier detected in vitro. Here, we demonstrate that in its genome, RZ2MS9 harbours the complete set of genes required in two pathways that are used for Indole acetic acid (IAA) production. We also detected that the strain produces almost five times more IAA during the stationary phase. The bacterial application increased the shoot dry weight of the Micro-Tom (MT) tomato by 24%. The application also modified MT root architecture, with an increase of 26% in the average lateral root length and inhibition of the axial root. At the cellular level, RZ2MS9-treated MT plants presented elongated root cortical cells with intensified mitotic activity. Altogether, these are the best characterized auxin-associated phenotypes. Besides that, no growth alteration was detected in the auxin-insensitive diageotropic (dgt) plants either with or without the RZ2MS9 inoculation. Our results suggest that auxins play an important role in the ability of B. thuringiensis RZ2MS9 to promote MT growth and provide a better understanding of the auxin production mechanism by a Bt strain.
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Affiliation(s)
- Bruna Durante Batista
- Department of Genetics, Luiz de Queiroz College of Agriculture, University of São Paulo, 11 Pádua Dias Av., Piracicaba, SP, 13418-900, Brazil.,Hawkesbury Institute for the Environment, Western Sydney University, Richmond, NSW, Australia
| | - Manuella Nóbrega Dourado
- Department of Microbiology, Biomedicine Institute, University of São Paulo, São Paulo, SP, Brazil
| | - Everthon Fernandes Figueredo
- Department of Genetics, Luiz de Queiroz College of Agriculture, University of São Paulo, 11 Pádua Dias Av., Piracicaba, SP, 13418-900, Brazil
| | - Renata Ockner Hortencio
- Department of Genetics, Luiz de Queiroz College of Agriculture, University of São Paulo, 11 Pádua Dias Av., Piracicaba, SP, 13418-900, Brazil
| | - João Paulo Rodrigues Marques
- Laboratory of Nuclear Instrumentation, Center of Nuclear Energy in Agriculture, University of São Paulo, Piracicaba, SP, Brazil
| | - Fernando Angelo Piotto
- Department of Crop Science, Luiz de Queiroz College of Agriculture, University of São Paulo, Piracicaba, SP, Brazil
| | - Maria Letícia Bonatelli
- Department of Genetics, Luiz de Queiroz College of Agriculture, University of São Paulo, 11 Pádua Dias Av., Piracicaba, SP, 13418-900, Brazil.,Bioinformatics Core, University of California, Davis, CA, USA
| | | | - João Lucio Azevedo
- Department of Genetics, Luiz de Queiroz College of Agriculture, University of São Paulo, 11 Pádua Dias Av., Piracicaba, SP, 13418-900, Brazil
| | - Maria Carolina Quecine
- Department of Genetics, Luiz de Queiroz College of Agriculture, University of São Paulo, 11 Pádua Dias Av., Piracicaba, SP, 13418-900, Brazil.
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14
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Hernández-Fernández M, Cordero-Bueso G, Ruiz-Muñoz M, Cantoral JM. Culturable Yeasts as Biofertilizers and Biopesticides for a Sustainable Agriculture: A Comprehensive Review. PLANTS (BASEL, SWITZERLAND) 2021; 10:822. [PMID: 33919047 PMCID: PMC8142971 DOI: 10.3390/plants10050822] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 04/07/2021] [Accepted: 04/19/2021] [Indexed: 01/18/2023]
Abstract
The extensive use of synthetic fertilizers and pesticides has negative consequences in terms of soil microbial biodiversity and environmental contamination. Faced with this growing concern, a proposed alternative agricultural method is the use of microorganisms as biofertilizers. Many works have been focused on bacteria, but the limited literature on yeasts and their potential ability to safely promote plant growth is gaining particular attention in recent years. Thus, the objective of this review is to highlight the application of yeasts as biological agents in different sectors of sustainable agricultural practices through direct or indirect mechanisms of action. Direct mechanisms include the ability of yeasts to provide soluble nutrients to plants, produce organic acids and phytohormones (indole-3-acetic acid). Indirect mechanisms involve the ability for yeasts to act as biocontrol agents through their high antifungal activity and lower insecticidal and herbicidal activity, and as soil bioremediating agents. They also act as protective agents against extreme environmental factors by activating defense mechanisms. It is evident that all the aspects that yeasts offer could be useful in the creation of quality biofertilizers and biopesticides. Hence, extensive research on yeasts could be promising and potentially provide an environmentally friendly solution to the increased crop production that will be required with a growing population.
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Affiliation(s)
| | - Gustavo Cordero-Bueso
- Laboratory of Microbiology, Department Biomedicine, Biotechnology and Public Health, University of Cádiz, Puerto Real, 11510 Cádiz, Spain; (M.H.-F.); (M.R.-M.); (J.M.C.)
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15
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Keswani C, Singh SP, Cueto L, García-Estrada C, Mezaache-Aichour S, Glare TR, Borriss R, Singh SP, Blázquez MA, Sansinenea E. Auxins of microbial origin and their use in agriculture. Appl Microbiol Biotechnol 2020; 104:8549-8565. [PMID: 32918584 DOI: 10.1007/s00253-020-10890-8] [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: 07/15/2020] [Revised: 08/31/2020] [Accepted: 09/04/2020] [Indexed: 12/13/2022]
Abstract
To maintain the world population demand, a sustainable agriculture is needed. Since current global vision is more friendly with the environment, eco-friendly alternatives are desirable. In this sense, plant growth-promoting rhizobacteria could be the choice for the management of soil-borne diseases of crop plants. These rhizobacteria secrete chemical compounds which act as phytohormones. Indole-3-acetic acid (IAA) is the most common plant hormone of the auxin class which regulates various processes of plant growth. IAA compound, in which structure can be found a carboxylic acid attached through a methylene group to the C-3 position of an indole ring, is produced both by plants and microorganisms. Plant growth-promoting rhizobacteria and fungi secrete IAA to promote the plant growth. In this review, IAA production and mechanisms of action by bacteria and fungi along with the metabolic pathways evolved in the IAA secretion and commercial prospects are revised.Key points• Many microorganisms produce auxins which help the plant growth promotion.• These auxins improve the plant growth by several mechanisms.• The auxins are produced through different mechanisms.
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Affiliation(s)
- Chetan Keswani
- Department of Biochemistry, Faculty of Science, Banaras Hindu University, Varanasi, India
| | - Satyendra Pratap Singh
- Department of Mycology and Plant Pathology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, India
| | - Laura Cueto
- Instituto de Biotecnología de León (INBIOTEC), Parque Científico de León, Av, Real, 1, 24006, León, Spain
| | - Carlos García-Estrada
- Instituto de Biotecnología de León (INBIOTEC), Parque Científico de León, Av, Real, 1, 24006, León, Spain.,Departamento de Ciencias Biomédicas, Universidad de León, Campus de Vegazana s/n, 24071, León, Spain
| | | | - Travis R Glare
- Bio-Protection Research Centre, Lincoln University, PO Box 85084, Lincoln, 7647, New Zealand
| | - Rainer Borriss
- Humboldt-Universität zu Berlin, Institut für Biologie, Berlin, Germany.,Nord Reet UG, Marienstr. 27a, 17489, Greifswald, Germany
| | - Surya Pratap Singh
- Department of Biochemistry, Faculty of Science, Banaras Hindu University, Varanasi, India
| | - Miguel Angel Blázquez
- Instituto de Biología Molecular y Celular de Plantas, CSIC-Universitat Politècnica de València, 46022, Valencia, Spain
| | - Estibaliz Sansinenea
- Facultad De Ciencias Químicas, Benemérita Universidad Autónoma De Puebla, 72590, Puebla, Pue, México.
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