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Tinoco-Tafolla HA, López-Hernández J, Ortiz-Castro R, López-Bucio J, Reyes de la Cruz H, Campos-García J, López-Bucio JS. Sucrose supplements modulate the Pseudomonas chlororaphis-Arabidopsis thaliana interaction via decreasing the production of phenazines and enhancing the root auxin response. J Plant Physiol 2024; 297:154259. [PMID: 38705079 DOI: 10.1016/j.jplph.2024.154259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Revised: 04/22/2024] [Accepted: 04/24/2024] [Indexed: 05/07/2024]
Abstract
Management of the plant microbiome may help support food needs for the human population. Bacteria influence plants through enhancing nutrient uptake, metabolism, photosynthesis, biomass production and/or reinforcing immunity. However, information into how these microbes behave under different growth conditions is missing. In this work, we tested how carbon supplements modulate the interaction of Pseudomonas chlororaphis with Arabidopsis thaliana. P. chlororaphis streaks strongly repressed primary root growth, lateral root formation and ultimately, biomass production. Noteworthy, increasing sucrose availability into the media from 0 to 2.4% restored plant growth and promoted lateral root formation in bacterized seedlings. This effect could not be observed by supplementing sucrose to leaves only, indicating that the interaction was strongly modulated by bacterial access to sugar. Total phenazine content decreased in the bacteria grown in high (2.4%) sucrose medium, and conversely, the expression of phzH and pslA genes were diminished by sugar supply. Pyocyanin antagonized the promoting effects of sucrose in lateral root formation and biomass production in inoculated seedlings, indicating that this virulence factor accounts for growth repression during the plant-bacterial interaction. Defence reporter transgenes PR-1::GUS and LOX2::GUS were induced in leaves, while the expression of the auxin-inducible, synthetic reporter gene DR5::GUS was enhanced in the roots of bacterized seedlings at low and high sucrose treatments, which suggests that growth/defence trade-offs in plants are critically modulated by P. chlororaphis. Collectively, our data suggest that bacterial carbon nutrition controls the outcome of the relation with plants.
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Affiliation(s)
- Hugo Alejandro Tinoco-Tafolla
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edificio B3, Ciudad Universitaria, C.P. 58030, Morelia, Michoacán, Mexico
| | - José López-Hernández
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edificio B3, Ciudad Universitaria, C.P. 58030, Morelia, Michoacán, Mexico
| | - Randy Ortiz-Castro
- Red de Estudios Moleculares Avanzados, Clúster BioMimic®, Instituto de Ecología, Carretera Antigua a Coatepec 351, El Haya, A.C 91073 Veracruz, Mexico
| | - José López-Bucio
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edificio B3, Ciudad Universitaria, C.P. 58030, Morelia, Michoacán, Mexico
| | - Homero Reyes de la Cruz
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edificio B3, Ciudad Universitaria, C.P. 58030, Morelia, Michoacán, Mexico
| | - Jesús Campos-García
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edificio B3, Ciudad Universitaria, C.P. 58030, Morelia, Michoacán, Mexico
| | - Jesús Salvador López-Bucio
- Catedrático (IXM) CONAHCYT-Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edificio B3, Ciudad Universitaria, C.P. 58030, Morelia, Michoacán, Mexico.
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2
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Patiño-Medina JA, Alejandre-Castañeda V, Valle-Maldonado MI, Martínez-Pacheco MM, Ruiz-Herrera LF, Ramírez-Emiliano J, Ramírez-Marroquín OA, Castro-Cerritos KV, Campos-García J, Ramírez-Díaz MI, Garre V, Binder U, Meza-Carmen V. Blood Serum Stimulates the Virulence Potential of Mucorales through Enhancement in Mitochondrial Oxidative Metabolism and Rhizoferrin Production. J Fungi (Basel) 2023; 9:1127. [PMID: 38132728 PMCID: PMC10744254 DOI: 10.3390/jof9121127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 11/12/2023] [Accepted: 11/20/2023] [Indexed: 12/23/2023] Open
Abstract
This study analyzed the role of blood serum in enhancing the mitochondrial metabolism and virulence of Mucorales through rhizoferrin secretion. We observed that the spores of clinically relevant Mucorales produced in the presence of serum exhibited higher virulence in a heterologous infection model of Galleria mellonella. Cell-free supernatants of the culture broth obtained from spores produced in serum showed increased toxicity against Caenorhabditis elegans, which was linked with the enhanced secretion of rhizoferrin. Spores from Mucoralean species produced or germinated in serum showed increased respiration rates and reactive oxygen species levels. The addition of non-lethal concentrations of potassium cyanide and N-acetylcysteine during the aerobic or anaerobic growth of Mucorales decreased the toxicity of the cell-free supernatants of the culture broth, suggesting that mitochondrial metabolism is important for serum-induced virulence. In support of this hypothesis, a mutant strain of Mucor lusitanicus that lacks fermentation and solely relies on oxidative metabolism exhibited virulence levels comparable to those of the wild-type strain under serum-induced conditions. Contrary to the lower virulence observed, even in the serum, the ADP-ribosylation factor-like 2 deletion strain exhibited decreased mitochondrial activity. Moreover, spores produced in the serum of M. lusitanicus and Rhizopus arrhizus that grew in the presence of a mitophagy inducer showed low virulence. These results suggest that serum-induced mitochondrial activity increases rhizoferrin levels, making Mucorales more virulent.
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Affiliation(s)
- José Alberto Patiño-Medina
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58030, Mexico; (J.A.P.-M.); (V.A.-C.); (M.M.M.-P.); (L.F.R.-H.); (J.C.-G.); (M.I.R.-D.)
| | - Viridiana Alejandre-Castañeda
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58030, Mexico; (J.A.P.-M.); (V.A.-C.); (M.M.M.-P.); (L.F.R.-H.); (J.C.-G.); (M.I.R.-D.)
| | | | - Mauro Manuel Martínez-Pacheco
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58030, Mexico; (J.A.P.-M.); (V.A.-C.); (M.M.M.-P.); (L.F.R.-H.); (J.C.-G.); (M.I.R.-D.)
| | - León Francisco Ruiz-Herrera
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58030, Mexico; (J.A.P.-M.); (V.A.-C.); (M.M.M.-P.); (L.F.R.-H.); (J.C.-G.); (M.I.R.-D.)
| | | | | | | | - Jesús Campos-García
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58030, Mexico; (J.A.P.-M.); (V.A.-C.); (M.M.M.-P.); (L.F.R.-H.); (J.C.-G.); (M.I.R.-D.)
| | - Martha Isela Ramírez-Díaz
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58030, Mexico; (J.A.P.-M.); (V.A.-C.); (M.M.M.-P.); (L.F.R.-H.); (J.C.-G.); (M.I.R.-D.)
| | - Victoriano Garre
- Departamento de Genética y Microbiología, Universidad de Murcia, 30100 Murcia, Spain;
| | - Ulrike Binder
- Institute of Hygiene and Medical Microbiology, Medical University Innsbruck, 6020 Innsbruck, Austria;
| | - Víctor Meza-Carmen
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58030, Mexico; (J.A.P.-M.); (V.A.-C.); (M.M.M.-P.); (L.F.R.-H.); (J.C.-G.); (M.I.R.-D.)
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Díaz-Pérez AL, Díaz-Pérez C, Gaona-García RY, Hernández-Santoyo A, Lázaro-Mixteco PE, Reyes-De La Cruz H, Campos-García J. Study of peripheral domains in structure-function of isocitrate lyase (ICL) from Pseudomonas aeruginosa. World J Microbiol Biotechnol 2023; 39:339. [PMID: 37821748 DOI: 10.1007/s11274-023-03768-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2023] [Accepted: 09/15/2023] [Indexed: 10/13/2023]
Abstract
The capacity of Pseudomonas aeruginosa to assimilate nutrients is essential for niche colonization and contributes to its pathogenicity. Isocitrate lyase (ICL), the first enzyme of the glyoxylate cycle, redirects isocitrate from the tricarboxylic acid cycle to render glyoxylate and succinate. P. aeruginosa ICL (PaICL) is regarded as a virulence factor due to its role in carbon assimilation during infection. The AceA/ICL protein family shares the catalytic domain I, triosephosphate isomerase barrel (TIM-barrel). The carboxyl terminus of domain I is essential for Escherichia coli ICL (EcICL) of subfamily 1. PaICL, which belongs to subfamily 3, has domain II inserted at the periphery of domain I, which is believed to participate in enzyme oligomerization. In addition, PaICL has the α13-loop-α14 (extended motif), which protrudes from the enzyme core, being of unknown function. This study investigates the role of domain II, the extended motif, and the carboxyl-terminus (C-ICL) and amino-terminus (N-ICL) regions in the function of the PaICL enzyme, also as their involvement in the virulence of P. aeruginosa PAO1. Deletion of domain II and the extended motif results in enzyme inactivation and structural instability of the enzyme. The His6-tag fusion at the C-ICL protein produced a less efficient enzyme than fusion at the N-ICL, but without affecting the acetate assimilation or virulence. The PaICL homotetrameric structure of the enzyme was more stable in the N-His6-ICL than in the C-His6-ICL, suggesting that the C-terminus is critical for the ICL quaternary conformation. The ICL-mutant A39 complemented with the recombinant proteins N-His6-ICL or C-His6-ICL were more virulent than the WT PAO1 strain. The findings indicate that the domain II and the extended motif are essential for the ICL structure/function, and the C-terminus is involved in its quaternary structure conformation, confirming that in P. aeruginosa, the ICL is essential for acetate assimilation and virulence.
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Affiliation(s)
- Alma Laura Díaz-Pérez
- Lab. de Biotecnología Microbiana, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edif. U-3, Ciudad Universitaria, 58030, Morelia, Mich., Mexico
| | - César Díaz-Pérez
- Facultad de Agrobiologia, Campus Celaya-Salvatierra, Universiad de Guanajuato, Guanajuato, Gto., Mexico
| | - Roxana Yughadi Gaona-García
- Lab. de Biotecnología Microbiana, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edif. U-3, Ciudad Universitaria, 58030, Morelia, Mich., Mexico
| | - Alejandra Hernández-Santoyo
- Departamento de Química de Biomacromoléculas, Instituto de Química, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Pedro E Lázaro-Mixteco
- Facultad de Ingeniería Química, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mich., Mexico
| | - Homero Reyes-De La Cruz
- Lab. de Biotecnología Microbiana, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edif. U-3, Ciudad Universitaria, 58030, Morelia, Mich., Mexico
| | - Jesús Campos-García
- Lab. de Biotecnología Microbiana, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edif. U-3, Ciudad Universitaria, 58030, Morelia, Mich., Mexico.
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Fernández-Gómez D, Villegas-Moreno J, Kumar-Tiwari D, Campos-García J, Juárez-Cisneros G. Effect of Multi-walled Carbon Nanotubes Functionalized with Indol-3-butyric Acid on the Development of Avena sativa. Microsc Microanal 2023; 29:39-41. [PMID: 37613051 DOI: 10.1093/micmic/ozad067.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Abstract
In pioneering research, it has been documented that the CNT influences the development of plants through the balance of phytoregulators. Therefore, in this work the objective is to evaluate the effects of CNT functionalized by non-covalent method with indole-3-butyric acid that they have on Avena sativa. The CNT was characterized by FTIR and Raman to confirm functionalization. It was observed that in the germination stage the seeds treated with IBA inhibited germination, however, when functionalizing the CNT with IBA it was observed that the CNT is contributing to counteract this inhibition.
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Affiliation(s)
- Daniela Fernández-Gómez
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo (UMSNH), Laboratorio de Interacción Suelo Planta Microorganismo, Ciudad Universitaria Morelia, Michoacán, México
| | - Javier Villegas-Moreno
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo (UMSNH), Laboratorio de Interacción Suelo Planta Microorganismo, Ciudad Universitaria Morelia, Michoacán, México
| | | | - Jesús Campos-García
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo (UMSNH), Edificio B-3, Ciudad Universitaria, Morelia, Michoacán, México
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5
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Solis-Ortiz CS, Gonzalez-Bernal J, Kido-Díaz HA, Peña-Uribe CA, López-Bucio JS, López-Bucio J, Guevara-García ÁA, García-Pineda E, Villegas J, Campos-García J, Reyes de La Cruz H. Bacterial cyclodipeptides elicit Arabidopsis thaliana immune responses reducing the pathogenic effects of Pseudomonas aeruginosa PAO1 strains on plant development. J Plant Physiol 2022; 275:153738. [PMID: 35690030 DOI: 10.1016/j.jplph.2022.153738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Revised: 05/27/2022] [Accepted: 05/27/2022] [Indexed: 06/15/2023]
Abstract
Plants being sessile organisms are exposed to various biotic and abiotic factors, thus causing stress. The Pseudomonas aeruginosa bacterium is an opportunistic pathogen for animals, insects, and plants. Direct exposure of Arabidopsis thaliana to the P. aeruginosa PAO1 strain induces plant death by producing a wide variety of virulence factors, which are regulated mainly by quorum sensing systems. Besides virulence factors, P. aeruginosa PAO1 also produces cyclodipeptides (CDPs), which possess auxin-like activity and promote plant growth through activation of the target of the rapamycin (AtTOR) pathway. On the other hand, plant defense mechanisms are regulated through the production of phytohormones, such as salicylic acid (SA) and jasmonic acid (JA), which are induced in response to pathogen-associated molecular patterns (PAMPs), activating defense genes associated with SA and JA such as PATHOGENESIS-RELATED-1 (PR-1) and LIPOXYGENASE2 (LOX2), respectively. PR proteins are suggested to play critical roles in coordinating the Systemic Acquired Resistance (SAR). In contrast, LOX proteins (LOX2, LOX3, and LOX4) have been associated with the production of JA by producing its precursors, oxylipins. The activation of defense mechanisms involves signaling cascades such as Mitogen-Activated Protein Kinases (MAPKs) or the TOR pathway as a switch for re-directing energy towards defense or growth. In this work, we challenged A. thaliana (wild type, mpk6 or mpk3 mutants, and overexpressing TOR) seedlings with P. aeruginosa PAO1 strains to identify the role of bacterial CDPs in the plant immune response. Results showed that the pre-exposure of these Arabidopsis seedlings to CDPs significantly reduced plant infection of the pathogenic P. aeruginosa PAO1 strains, indicating that plants that over-express AtTOR or lack MPK3/MPK6 protein-kinases are more susceptible to the pathogenic effects. In addition, CDPs induced the GUS activity only in the LOX2::GUS plants, indicative of JA-signaling activation. Our findings indicate that the CDPs are molecules that trigger SA-independent and JA-dependent defense responses in A. thaliana; hence, bacterial CDPs may be considered elicitors of the Arabidopsis immune response to pathogens.
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Affiliation(s)
- Cristhian Said Solis-Ortiz
- Laboratorio de Biotecnología Molecular de Plantas, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, 58030, Morelia, Michoacán, Mexico
| | - Javier Gonzalez-Bernal
- Laboratorio de Biotecnología Molecular de Plantas, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, 58030, Morelia, Michoacán, Mexico
| | - Héctor Antonio Kido-Díaz
- Laboratorio de Biotecnología Molecular de Plantas, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, 58030, Morelia, Michoacán, Mexico
| | - Cesar Artuto Peña-Uribe
- Laboratorio de Biotecnología Molecular de Plantas, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, 58030, Morelia, Michoacán, Mexico
| | - Jesús Salvador López-Bucio
- Laboratorio de Biotecnología Molecular de Plantas, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, 58030, Morelia, Michoacán, Mexico
| | - José López-Bucio
- Laboratorio de Biología del Desarrollo Vegetal, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, 58030, Morelia, Michoacán, Mexico
| | | | - Ernesto García-Pineda
- Laboratorio de Bioquímica y Biología Molecular de Plantas, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, 58030, Morelia, Michoacán, Mexico
| | - Javier Villegas
- Laboratorio de Interacción Suelo Planta Microorganismo, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, 58030, Morelia, Michoacán, Mexico
| | - Jesús Campos-García
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, 58030, Morelia, Michoacán, Mexico.
| | - Homero Reyes de La Cruz
- Laboratorio de Biotecnología Molecular de Plantas, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, 58030, Morelia, Michoacán, Mexico.
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Olmos-Orizaba BE, Arroyo-Peñaloza JS, Martínez-Alcántar L, Montoya-Pérez R, Flores-García A, Rodríguez-Orozco AR, Calderón-Cortés E, Saavedra-Molina A, Campos-García J, Cortés-Rojo C. Linolenic Acid Plus Ethanol Exacerbates Cell Death in Saccharomyces cerevisiae by Promoting Lipid Peroxidation, Cardiolipin Loss, and Necrosis. Life 2022; 12:life12071052. [PMID: 35888140 PMCID: PMC9320082 DOI: 10.3390/life12071052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 07/12/2022] [Indexed: 11/16/2022]
Abstract
Polyunsaturated fatty acids (PUFA) hypersensitize yeast to oxidative stress. Ethanol accumulation during fermentation is another factor that induces oxidative stress via mitochondrial dysfunction and ROS overproduction. Since this microorganism has raised growing interest as a PUFA factory, we have studied if the combination of PUFA plus ethanol enhances yeast death. Respiration, ROS generation, lipid peroxidation, mitochondrial cardiolipin content, and cell death were assessed in yeast grown in the presence of 10% ethanol (ETOH) or linolenic acid (C18:3), or ethanol plus C18:3 (ETOH+C18:3). Lipid peroxidation and cardiolipin loss were several-fold higher in cells with ETOH+C18:3 than with C18:3. On the contrary, ETOH tended to increase cardiolipin content without inducing changes in lipid peroxidation. This was consistent with a remarkable diminution of cell growth and an exacerbated propidium iodide staining in cells with only ETOH+C18:3. The respiration rate decreased with all the treatments to a similar degree, and this was paralleled with similar increments in ROS between all the treatments. These results indicate that PUFA plus ethanol hypersensitize yeast to necrotic cell death by exacerbating membrane damage and mitochondrial cardiolipin loss, independent of mitochondrial dysfunction and ROS generation. The implications of these observations for some biotechnological applications in yeast and its physiology are discussed.
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Affiliation(s)
- Berenice Eridani Olmos-Orizaba
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58030, Mexico; (B.E.O.-O.); (J.S.A.-P.); (L.M.-A.); (R.M.-P.); (A.F.-G.); (A.S.-M.); (J.C.-G.)
| | - José Santos Arroyo-Peñaloza
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58030, Mexico; (B.E.O.-O.); (J.S.A.-P.); (L.M.-A.); (R.M.-P.); (A.F.-G.); (A.S.-M.); (J.C.-G.)
| | - Lorena Martínez-Alcántar
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58030, Mexico; (B.E.O.-O.); (J.S.A.-P.); (L.M.-A.); (R.M.-P.); (A.F.-G.); (A.S.-M.); (J.C.-G.)
| | - Rocío Montoya-Pérez
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58030, Mexico; (B.E.O.-O.); (J.S.A.-P.); (L.M.-A.); (R.M.-P.); (A.F.-G.); (A.S.-M.); (J.C.-G.)
| | - Alberto Flores-García
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58030, Mexico; (B.E.O.-O.); (J.S.A.-P.); (L.M.-A.); (R.M.-P.); (A.F.-G.); (A.S.-M.); (J.C.-G.)
| | - Alain Raimundo Rodríguez-Orozco
- Facultad de Ciencias Médicas y Biológicas “Dr. Ignacio Chávez”, Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58020, Mexico;
| | | | - Alfredo Saavedra-Molina
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58030, Mexico; (B.E.O.-O.); (J.S.A.-P.); (L.M.-A.); (R.M.-P.); (A.F.-G.); (A.S.-M.); (J.C.-G.)
| | - Jesús Campos-García
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58030, Mexico; (B.E.O.-O.); (J.S.A.-P.); (L.M.-A.); (R.M.-P.); (A.F.-G.); (A.S.-M.); (J.C.-G.)
| | - Christian Cortés-Rojo
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia 58030, Mexico; (B.E.O.-O.); (J.S.A.-P.); (L.M.-A.); (R.M.-P.); (A.F.-G.); (A.S.-M.); (J.C.-G.)
- Correspondence: ; Tel.: +52-44-3326-5790
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7
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Lázaro-Mixteco PE, González-Coronel JM, Hernández-Padilla L, Martínez-Alcantar L, Martínez-Carranza E, López-Bucio JS, Guevara-García ÁA, Campos-García J. Transcriptomics Reveals the Mevalonate and Cholesterol Pathways Blocking as Part of the Bacterial Cyclodipeptides Cytotoxic Effects in HeLa Cells of Human Cervix Adenocarcinoma. Front Oncol 2022; 12:790537. [PMID: 35359411 PMCID: PMC8964019 DOI: 10.3389/fonc.2022.790537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 02/08/2022] [Indexed: 11/23/2022] Open
Abstract
The incidence of human cervix adenocarcinoma (CC) caused by papillomavirus genome integration into the host chromosome is the third most common cancer among women. Bacterial cyclodipeptides (CDPs) exert cytotoxic effects in human cervical cancer HeLa cells, primarily by blocking the PI3K/Akt/mTOR pathway, but downstream responses comprising gene expression remain unstudied. Seeking to understand the cytotoxic and anti-proliferative effects of CDPs in HeLa cells, a global RNA-Seq analysis was performed. This strategy permitted the identification of 151 differentially expressed genes (DEGs), which were either up- or down-regulated in response to CDPs exposure. Database analysis, including Gene Ontology (COG), and the Kyoto Encyclopedia of Genes and Genomes (KEGG), revealed differential gene expression on cancer transduction signals, and metabolic pathways, for which, expression profiles were modified by the CDPs exposure. Bioinformatics confirmed the impact of CDPs in the differential expression of genes from signal transduction pathways such as PI3K-Akt, mTOR, FoxO, Wnt, MAPK, P53, TGF-β, Notch, apoptosis, EMT, and CSC. Additionally, the CDPs exposure modified the expression of cancer-related transcription factors involved in the regulation of processes such as epigenetics, DNA splicing, and damage response. Interestingly, transcriptomic analysis revealed the participation of genes of the mevalonate and cholesterol biosynthesis pathways; in agreement with this observation, total cholesterol diminished, confirming the blockage of the cholesterol synthesis by the exposure of HeLa cells to CDPs. Interestingly, the expression of some genes of the mevalonate and cholesterol synthesis such as HMGS1, HMGCR, IDI1, SQLE, MSMO1, SREBF1, and SOAT1 was up-regulated by CDPs exposure. Accordingly, metabolites of the mevalonate pathway were accumulated in cultures treated with CDPs. This finding further suggests that the metabolism of cholesterol is crucial for the occurrence of CC, and the blockade of the sterol synthesis as an anti-proliferative mechanism of the bacterial CDPs, represents a reasonable chemotherapeutic drug target to explore. Our transcriptomic study supports the anti-neoplastic effects of bacterial CDPs in HeLa cells shown previously, providing new insights into the transduction signals, transcription factors and metabolic pathways, such as mevalonate and cholesterol that are impacted by the CDPs and highlights its potential as anti-neoplastic drugs.
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Affiliation(s)
- Pedro E Lázaro-Mixteco
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico
| | - José M González-Coronel
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Mexico
| | - Laura Hernández-Padilla
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico
| | - Lorena Martínez-Alcantar
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico
| | - Enrique Martínez-Carranza
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico
| | - Jesús Salvador López-Bucio
- CONACYT-UMSNH, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico
| | - Ángel A Guevara-García
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Mexico
| | - Jesús Campos-García
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico
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8
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Ravelo-Ortega G, Pelagio-Flores R, López-Bucio J, Campos-García J, Reyes de la Cruz H, López-Bucio JS. Early sensing of phosphate deprivation triggers the formation of extra root cap cell layers via SOMBRERO through a process antagonized by auxin signaling. Plant Mol Biol 2022; 108:77-91. [PMID: 34855067 DOI: 10.1007/s11103-021-01224-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Accepted: 11/18/2021] [Indexed: 06/13/2023]
Abstract
The role of the root cap in the plant response to phosphate deprivation has been scarcely investigated. Here we describe early structural, physiological and molecular changes prior to the determinate growth program of the primary roots under low Pi and unveil a critical function of the transcription factor SOMBRERO in low Pi sensing. Mineral nutrient distribution in the soil is uneven and roots efficiently adapt to improve uptake and assimilation of sparingly available resources. Phosphate (Pi) accumulates in the upper layers and thus short and branched root systems proliferate to better exploit organic and inorganic Pi patches. Here we report an early adaptive response of the Arabidopsis primary root that precedes the entrance of the meristem into the determinate developmental program that is a hallmark of the low Pi sensing mechanism. In wild-type seedlings transferred to low Pi medium, the quiescent center domain in primary root tips increases as an early response, as revealed by WOX5:GFP expression and this correlates with a thicker root tip with extra root cap cell layers. The halted primary root growth in WT seedlings could be reversed upon transfer to medium supplemented with 250 µM Pi. Mutant and gene expression analysis indicates that auxin signaling negatively affects the cellular re-specification at the root tip and enabled identification of the transcription factor SOMBRERO as a critical element that orchestrates both the formation of extra root cap layers and primary root growth under Pi scarcity. Moreover, we provide evidence that low Pi-induced root thickening or the loss-of-function of SOMBRERO is associated with expression of phosphate transporters at the root tip. Our data uncover a developmental window where the root tip senses deprivation of a critical macronutrient to improve adaptation and surveillance.
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Affiliation(s)
- Gustavo Ravelo-Ortega
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edificio B1, Ciudad Universitaria, C.P. 58030, Morelia, Michoacán, México
| | - Ramón Pelagio-Flores
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edificio B1, Ciudad Universitaria, C.P. 58030, Morelia, Michoacán, México
| | - José López-Bucio
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edificio B1, Ciudad Universitaria, C.P. 58030, Morelia, Michoacán, México
| | - Jesús Campos-García
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edificio B1, Ciudad Universitaria, C.P. 58030, Morelia, Michoacán, México
| | - Homero Reyes de la Cruz
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edificio B1, Ciudad Universitaria, C.P. 58030, Morelia, Michoacán, México
| | - Jesús Salvador López-Bucio
- CONACYT-Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edificio B1, Ciudad Universitaria, C.P. 58030, Morelia, Michoacán, México.
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9
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Martínez-Alcantar L, Orozco G, Díaz-Pérez AL, Villegas J, Reyes-De la Cruz H, García-Pineda E, Campos-García J. Participation of Acyl-Coenzyme A Synthetase FadD4 of Pseudomonas aeruginosa PAO1 in Acyclic Terpene/Fatty Acid Assimilation and Virulence by Lipid A Modification. Front Microbiol 2021; 12:785112. [PMID: 34867927 PMCID: PMC8637051 DOI: 10.3389/fmicb.2021.785112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Accepted: 10/19/2021] [Indexed: 12/03/2022] Open
Abstract
The pathogenic bacterium Pseudomonas aeruginosa possesses high metabolic versatility, with its effectiveness to cause infections likely due to its well-regulated genetic content. P. aeruginosa PAO1 has at least six fadD paralogous genes, which have been implicated in fatty acid (FA) degradation and pathogenicity. In this study, we used mutagenesis and a functional approach in P. aeruginosa PAO1 to determine the roles of the fadD4 gene in acyclic terpene (AT) and FA assimilation and on pathogenicity. The results indicate that fadD4 encodes a terpenoyl-CoA synthetase utilized for AT and FA assimilation. Additionally, mutations in fadD paralogs led to the modification of the quorum-sensing las/rhl systems, as well as the content of virulence factors pyocyanin, biofilm, rhamnolipids, lipopolysaccharides (LPS), and polyhydroxyalkanoates. In a Caenorhabditis elegans in vivo pathogenicity model, culture supernatants from the 24-h-grown fadD4 single mutant increased lethality compared to the PAO1 wild-type (WT) strain; however, the double mutants fadD1/fadD2, fadD1/fadD4, and fadD2/fadD4 and single mutant fadD2 increased worm survival. A correlation analysis indicated an interaction between worm death by the PAO1 strain, the fadD4 mutation, and the virulence factor LPS. Fatty acid methyl ester (FAME) analysis of LPS revealed that a proportion of the LPS and FA on lipid A were modified by the fadD4 mutation, suggesting that FadD4 is also involved in the synthesis/degradation and modification of the lipid A component of LPS. LPS isolated from the fadD4 mutant and double mutants fadD1/fadD4 and fadD2/fadD4 showed a differential behavior to induce an increase in body temperature in rats injected with LPS compared to the WT strain or from the fadD1 and fadD2 mutants. In agreement, LPS isolated from the fadD4 mutant and double mutants fadD1/fadD2 and fadD2/fadD4 increased the induction of IL-8 in rat sera, but IL1-β cytokine levels decreased in the double mutants fadD1/fadD2 and fadD1/fadD4. The results indicate that the fadD genes are implicated in the degree of pathogenicity of P. aeruginosa PAO1 induced by LPS-lipid A, suggesting that FadD4 contributes to the removal of acyl-linked FA from LPS, rendering modification in its immunogenic response associated to Toll-like receptor TLR4. The genetic redundancy of fadD is important for bacterial adaptability and pathogenicity over the host.
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Affiliation(s)
- Lorena Martínez-Alcantar
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico
| | - Gabriela Orozco
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico
| | - Alma Laura Díaz-Pérez
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico
| | - Javier Villegas
- Laboratorio de Interacción Suelo, Planta, Microorganismo, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico
| | - Homero Reyes-De la Cruz
- Laboratorio de Control Traduccional, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico
| | - Ernesto García-Pineda
- Laboratorio de Bioquímica y Biología Molecular, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico
| | - Jesús Campos-García
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico
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10
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Vázquez-Fuentes S, Pelagio-Flores R, López-Bucio J, Torres-Gavilán A, Campos-García J, de la Cruz HR, López-Bucio JS. N-vanillyl-octanamide represses growth of fungal phytopathogens in vitro and confers postharvest protection in tomato and avocado fruits against fungal-induced decay. Protoplasma 2021; 258:729-741. [PMID: 33410981 DOI: 10.1007/s00709-020-01586-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 11/18/2020] [Indexed: 06/12/2023]
Abstract
Plant diseases caused by pathogenic fungi result in considerable losses in agriculture. The use of fungicides is an important alternative to combat these pathogens, but may affect both the environment and human health. Plants produce many bioactive compounds to defend themselves from biotic challenges and an increasing number of secondary metabolites have been identified, which may be used to control fungal infections. Here, the bioactivity of a synthetic capsaicinoid, N-vanillyl-octanamide, also termed ABX-I, in the growth of five phytopathogenic fungi was assessed in vitro. The compound inhibited growth of Colletotrichum gloeosporioides, Botrytis cinerea, Colletotrichum acutatum, Fusarium sp., and Rhizoctonia solani AG2, while the magnitude of this effect differed from capsaicin. To investigate if ABX-I could effectively protect crops against phytopathogens, fungal challenges were performed in tomato leaves and fruits, as well as avocado fruits co-infiltrated with Botrytis cinerea or Colletotrichum gloeosporioides, respectively. In both tomato leaves and fruits and avocado fruits, ABX-I decreased the fungal damage not only in vegetative but also in edible tissues, and diminished decay symptoms compared with untreated fruits, which were highly sensitive to the pathogens. Furthermore, ABX-I spray application to tomato or avocado plants did not compromise growth and development, whereas it repressed spore germination and growth of C. gloeosporioides, which suggests its potential as an affordable and promising resource to control fungal diseases in the agronomic sector.
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Affiliation(s)
- Saúl Vázquez-Fuentes
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edificio B3, Ciudad Universitaria, C. P., 58030, Morelia, Michoacán, Mexico
| | - Ramón Pelagio-Flores
- Facultad de Químico Farmacobiología, Universidad Michoacana de San Nicolás de Hidalgo, Tzintzuntzan 173, Matamoros, C. P., 58240, Morelia, Michoacán, Mexico
| | - José López-Bucio
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edificio B3, Ciudad Universitaria, C. P., 58030, Morelia, Michoacán, Mexico
| | | | - Jesús Campos-García
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edificio B3, Ciudad Universitaria, C. P., 58030, Morelia, Michoacán, Mexico
| | - Homero Reyes de la Cruz
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edificio B3, Ciudad Universitaria, C. P., 58030, Morelia, Michoacán, Mexico
| | - Jesús Salvador López-Bucio
- CONACYT-Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edificio B3, Ciudad Universitaria, C. P., 58030, Morelia, Michoacán, Mexico.
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11
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Juárez-Cisneros G, Campos-García J, Díaz-Pérez SP, Lara-Romero J, Tiwari DK, Sánchez-Yáñez JM, Reyes-De la Cruz H, Jiménez-Sandoval S, Villegas J. Ligninolytic activity of the Penicillium chrysogenum and Pleurotus ostreatus fungi involved in the biotransformation of synthetic multi-walled carbon nanotubes modify its toxicity. PeerJ 2021; 9:e11127. [PMID: 33850658 PMCID: PMC8019314 DOI: 10.7717/peerj.11127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 02/26/2021] [Indexed: 11/25/2022] Open
Abstract
Multi-walled carbon nanotubes (MWCNTs) are of multidisciplinary scientific interest due to their exceptional physicochemical properties and a broad range of applications. However, they are considered potentially toxic nanoparticles when they accumulate in the environment. Given their ability to oxidize resistant polymers, mycorremediation with lignocellulolytic fungi are suggested as biological alternatives to the mineralization of MWCNTs. Hence, this study involves the ability of two fungi specie to MWCNTs biotransformation by laccase and peroxidases induction and evaluation in vivo of its toxicity using Caenorhabditis elegans worms as a model. Results showed that the fungi Penicillium chrysogenum and Pleurotus ostreatus were capable to grow on media with MWCNTs supplemented with glucose or lignin. Activities of lignin-peroxidase, manganese-peroxidase, and laccase in cultures of both fungi were induced by MWCNTs. Raman, FTIR spectroscopy, HR-TEM, and TGA analyses of the residue from the cultures of both fungi revealed structural modifications on the surface of MWCNTs and its amount diminished, correlating the MWCNTs structural modifications with the laccase-peroxidase activities in the fungal cultures. Results indicate that the degree of toxicity of MWCNTs on the C. elegans model was enhanced by the structure modification associated with the fungal ligninolytic activity. The toxic effect of MWCNTs on the in vivo model of worms reveals the increment of reactive oxygen species as a mechanism of toxicity. Findings indicate that the MWCNTs can be subject in nature to biotransformation processes such as the fungal metabolism, which contribute to modify their toxicity properties on susceptible organisms and contributing to environmental elimination.
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Affiliation(s)
- Gladys Juárez-Cisneros
- Laboratorio de Interacción Suelo Planta Microorganismo, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, Mexico
| | - Jesús Campos-García
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, Mexico
| | - Sharel Pamela Díaz-Pérez
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, Mexico
| | - Javier Lara-Romero
- Facultad de Ingeniería Química, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, Mexico
| | | | - Juan Manuel Sánchez-Yáñez
- Laboratorio de Interacción Suelo Planta Microorganismo, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, Mexico
| | - Homero Reyes-De la Cruz
- Laboratorio de Control Traduccional, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, Mexico
| | - Sergio Jiménez-Sandoval
- Unidad Querétaro, Centro de Investigación y de Estudios Avanzados del IPN, Querétaro, Querétaro, Mexico
| | - Javier Villegas
- Laboratorio de Interacción Suelo Planta Microorganismo, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, Mexico
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12
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González-López O, Palacios-Nava BB, Peña-Uribe CA, Campos-García J, López-Bucio J, García-Pineda E, Reyes de la Cruz H. Growth promotion in Arabidopsis thaliana by bacterial cyclodipeptides involves the TOR/S6K pathway activation. J Plant Physiol 2021; 257:153343. [PMID: 33387853 DOI: 10.1016/j.jplph.2020.153343] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 12/08/2020] [Accepted: 12/09/2020] [Indexed: 06/12/2023]
Abstract
Cyclodipeptides (CDPs) are the smallest peptidic molecules that can be produced by diverse organisms such as bacteria, fungi, and animals. They have multiple biological effects. In this paper, we examined the CDPs produced by the bacteria Pseudomonas aeruginosa PAO1, which are known as opportunistic pathogens of humans and plants on TARGET OF RAPAMYCIN (TOR) signaling pathways, and regulation of root system architecture. This bacterium produces the bioactive CDPs: cyclo(L-Pro-L-Leu), cyclo(L-Pro-L-Phe), cyclo(L-Pro-L-Tyr), and cyclo(L-Pro-L-Val). In a previous report, these molecules were found to modulate basic cellular programs not only via auxin mechanisms but also by promoting the phosphorylation of the S6 ribosomal protein kinase (S6K), a downstream substrate of the TOR kinase. In the present work, we found that the inoculation of Arabidopsis plants with P. aeruginosa PAO1, the non-pathogenic P. aeruginosa ΔlasI/Δrhll strain (JM2), or by direct exposure of plants to CDPs influenced growth and promoted root branching depending upon the treatment imposed, while genetic evidence using Arabidopsis lines with enhanced or decreased TOR levels indicated a critical role of this pathway in the bacterial phytostimulation.
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Affiliation(s)
- Omar González-López
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ed B1, B3, A1', U3, Ciudad Universitaria, Morelia, Michoacán, CP 58030, Mexico
| | - Brenda Berenice Palacios-Nava
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ed B1, B3, A1', U3, Ciudad Universitaria, Morelia, Michoacán, CP 58030, Mexico
| | - César Arturo Peña-Uribe
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ed B1, B3, A1', U3, Ciudad Universitaria, Morelia, Michoacán, CP 58030, Mexico
| | - Jesús Campos-García
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ed B1, B3, A1', U3, Ciudad Universitaria, Morelia, Michoacán, CP 58030, Mexico
| | - José López-Bucio
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ed B1, B3, A1', U3, Ciudad Universitaria, Morelia, Michoacán, CP 58030, Mexico
| | - Ernesto García-Pineda
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ed B1, B3, A1', U3, Ciudad Universitaria, Morelia, Michoacán, CP 58030, Mexico
| | - Homero Reyes de la Cruz
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Ed B1, B3, A1', U3, Ciudad Universitaria, Morelia, Michoacán, CP 58030, Mexico.
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13
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Raya-García E, Suazo-Ortuño I, Campos-García J, Martín J, Alvarado-Díaz J, Mendoza-Ramírez E. Chemical signal divergence among populations influences behavioral discrimination in the whiptail lizard Aspidoscelis lineattissimus (squamata: teiidae). Behav Ecol Sociobiol 2020. [DOI: 10.1007/s00265-020-02931-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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14
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Durán-Maldonado MX, Hernández-Padilla L, Gallardo-Pérez JC, Díaz-Pérez AL, Martínez-Alcantar L, Reyes De la Cruz H, Rodríguez-Zavala JS, Pacheco-Rodríguez G, Moss J, Campos-García J. Bacterial Cyclodipeptides Target Signal Pathways Involved in Malignant Melanoma. Front Oncol 2020; 10:1111. [PMID: 32793477 PMCID: PMC7393205 DOI: 10.3389/fonc.2020.01111] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 06/03/2020] [Indexed: 01/19/2023] Open
Abstract
Melanoma is an aggressive cancer that utilizes multiple signaling pathways, including those that involve oncogenes, proto-oncogenes, and tumor suppressors. It has been suggested that melanoma formation requires cross-talk of the PI3K/Akt/mTOR and Ras-ERK pathways. This pathway cross-talk has been associated with aggressiveness, drug resistance, and metastasis; thus, simultaneous targeting of components of the different pathways involved in melanoma may aid in therapy. We have previously reported that bacterial cyclodipeptides (CDPs) are cytotoxic to HeLa cells and inhibit Akt phosphorylation. Here, we show that CDPs decreased melanoma size and tumor formation in a subcutaneous xenografted mouse melanoma model. In fact, CDPs accelerated death of B16-F0 murine melanoma cells. In mice, antitumor effect was improved by treatment with CDPs using cyclodextrins as drug vehicle. In tumors, CDPs caused nuclear fragmentation and changed the expression of the Bcl-2 and Ki67 apoptotic markers and promoted restoration of hyperactivation of the PI3K/Akt/mTOR pathway. Additionally, elements of several signaling pathways such as the Ras-ERK, PI3K/JNK/PKA, p27Kip1/CDK1/survivin, MAPK, HIF-1, epithelial–mesenchymal transition, and cancer stem cell pathways were also modified by treatment of xenografted melanoma mice with CDPs. The findings indicate that the multiple signaling pathways implicated in aggressiveness of the murine B16-F0 melanoma line are targeted by the bacterial CDPs. Molecular modeling of CDPs with protein kinases involved in neoplastic processes suggested that these compounds could indeed interact with the active site of the enzymes. The results suggest that CDPs may be considered as potential antineoplastic drugs, interfering with multiple pathways involved in tumor formation and progression.
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Affiliation(s)
- Mayra Xóchitl Durán-Maldonado
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico
| | - Laura Hernández-Padilla
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico
| | | | - Alma Laura Díaz-Pérez
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico
| | - Lorena Martínez-Alcantar
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico
| | - Homero Reyes De la Cruz
- Laboratorio de Control Traduccional, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico
| | | | - Gustavo Pacheco-Rodríguez
- Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, United States
| | - Joel Moss
- Pulmonary Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, United States
| | - Jesús Campos-García
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico
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15
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Sánchez-Duarte E, Cortés-Rojo C, Sánchez-Briones LA, Campos-García J, Saavedra-Molina A, Delgado-Enciso I, López-Lemus UA, Montoya-Pérez R. Nicorandil Affects Mitochondrial Respiratory Chain Function by Increasing Complex III Activity and ROS Production in Skeletal Muscle Mitochondria. J Membr Biol 2020; 253:309-318. [PMID: 32620983 DOI: 10.1007/s00232-020-00129-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Accepted: 06/23/2020] [Indexed: 12/15/2022]
Abstract
Adenosine triphosphate (ATP)-dependent potassium channels openers (KATP) protect skeletal muscle against function impairment through the activation of the mitochondrial KATP channels (mitoKATP). Previous reports suggest that modulators of the mitochondrial KATP channels have additional effects on isolated mitochondria. To determine whether the KATP channel opener nicorandil has non-specific effects that explain its protective effect through the mitochondrial function, chicken muscle mitochondria were isolated, and respiration rate was determined pollarographically. The activity of the electron transport chain (ETC) complexes (I-IV) was measured using a spectrophotometric method. Reactive oxygen species (ROS) levels and lipid peroxidation were assessed using flow cytometry and thiobarbituric acid assay, respectively. Both KATP channel opener nicorandil and KATP channel blocker 5-hydroxydecanoate (5-HD) decreased mitochondrial respiration; nicorandil increased complex III activity and decreased complex IV activity. The effects of nicorandil on complex III were antagonized by 5-HD. Nicorandil increased ROS levels, effect reverted by either 5-HD or the antioxidant N-2-mercaptopropionyl glycine (MPG). None of these drugs affected lipid peroxidation levels. These findings suggest that KATP channel opener nicorandil increases mitochondrial ROS production from complex III. This results by partially blocking electron flow in the complex IV, setting electron carriers in a more reduced state, which is favored by the increase in complex III activity by nicorandil. Overall, our study showed that nicorandil like other mitochondrial KATP channel openers might not act through mitoKATP channel activation.
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Affiliation(s)
- E Sánchez-Duarte
- Departamento de Ciencias Aplicadas al Trabajo, Universidad de Guanajuato Campus León, Eugenio Garza Sada 572, Lomas del Campestre Sección 2, 37150, León, Guanajuato, Mexico
| | - C Cortés-Rojo
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Francisco J. Múgica S/N, Col. Felicitas del Río, 58030, Morelia, Michoacán, Mexico
| | - L A Sánchez-Briones
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Francisco J. Múgica S/N, Col. Felicitas del Río, 58030, Morelia, Michoacán, Mexico
| | - J Campos-García
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Francisco J. Múgica S/N, Col. Felicitas del Río, 58030, Morelia, Michoacán, Mexico
| | - A Saavedra-Molina
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Francisco J. Múgica S/N, Col. Felicitas del Río, 58030, Morelia, Michoacán, Mexico
| | - I Delgado-Enciso
- Facultad de Medicina, Universidad de Colima, Av. Universidad 333. Las Víboras, 28040, Colima, Colima, Mexico
| | - U A López-Lemus
- Center for Biodefense and Global Infectious Diseases, 28078, Colima, Colima, Mexico
| | - R Montoya-Pérez
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Francisco J. Múgica S/N, Col. Felicitas del Río, 58030, Morelia, Michoacán, Mexico.
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16
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Juárez-Cisneros G, Gómez-Romero M, Reyes de la Cruz H, Campos-García J, Villegas J. Multi-walled carbon nanotubes produced after forest fires improve germination and development of Eysenhardtia polystachya. PeerJ 2020; 8:e8634. [PMID: 32351779 PMCID: PMC7183754 DOI: 10.7717/peerj.8634] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 01/26/2020] [Indexed: 12/14/2022] Open
Abstract
Background Multi-walled carbon nanotubes (MWCNTs) are nanoparticles with countless applications. MWCNTs are typically of synthetic origin. However, recently, the formation of MWCNTs in nature after forest fires has been documented. Previous reports have demonstrated the positive effects of synthetic MWCNTs on the germination and development of species of agronomic interest; nevertheless, there is practically no information on how synthetic or natural MWCNTs affect forest plant development. In this report, based on insights from dose-response assays, we elucidate the comparative effects of synthetic MWCNTs, amorphous carbon, and natural MWCNTs obtained after a forest fire on Eysenhardtia polystachya plant. Methods E. polystachya seeds were sown in peat moss-agrolite substrate and conserved in a shade house. Germination was recorded daily up to 17 days after sowing, and plant development (manifested in shoot and root length, stem diameter, foliar area, and root architecture parameters) was recorded 60 days after sowing. Results The treatments with natural MWCNTs accelerated the emergence and improved the germination of this plant, thus while untreated seeds achieve 100% of germination within 16th day, seeds supplemented with natural MWCNTs at doses of 20 µg/mL achieve the above percentage within the 4th day. Natural MWCNTs also promoted fresh and dry biomass in all applied treatments, specially at doses of 40 µg/mL where natural MWCNTs significantly promoted leaf number, root growth, and the dry and fresh weights of shoots and roots of seedlings. Seeds supplemented with doses between 20 and 40 µg/mL of amorphous carbon achieving 100% of germination within the 6th day; however, seeds supplemented either with doses of 60 µg/mL of the above carbon or with synthetic MWCNTs at all the tested concentrations could achieve at most 80 % and 70% of germination respectively within the 17 days. Finally, neither treatments added with amorphous carbon nor those added with synthetic MWCNTs, showed significant increases in the fresh and dry biomass of the tested plant. Likewise, the survival of seedlings was reduced between 10 and 20 % with 40 and 60 µg/mL of amorphous carbon, and with synthetic MWCNTs in all the doses applied was reduced at 30% of survival plants. Conclusions These findings indicate that MWCNTs produced by wildfire act as plant growth promoters, contributing to the germination and development of adapted to fire-prone conditions species such as E. polystachya.
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Affiliation(s)
- Gladys Juárez-Cisneros
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
| | - Mariela Gómez-Romero
- Cátedras CONACYT-Facultad de Biología, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
| | - Homero Reyes de la Cruz
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
| | - Jesús Campos-García
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
| | - Javier Villegas
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
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Patiño-Medina JA, Reyes-Mares NY, Valle-Maldonado MI, Jácome-Galarza IE, Pérez-Arques C, Nuñez-Anita RE, Campos-García J, Anaya-Martínez V, Ortiz-Alvarado R, Ramírez-Díaz MI, Chan Lee S, Garre V, Meza-Carmen V. Heterotrimeric G-alpha subunits Gpa11 and Gpa12 define a transduction pathway that control spore size and virulence in Mucor circinelloides. PLoS One 2019; 14:e0226682. [PMID: 31887194 PMCID: PMC6936849 DOI: 10.1371/journal.pone.0226682] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Accepted: 12/03/2019] [Indexed: 02/07/2023] Open
Abstract
Mucor circinelloides is one of the causal agents of mucormycosis, an emerging and high mortality rate fungal infection produced by asexual spores (sporangiospores) of fungi that belong to the order Mucorales. M. circinelloides has served as a model genetic system to understand the virulence mechanism of this infection. Although the G-protein signaling cascade plays crucial roles in virulence in many pathogenic fungi, its roles in Mucorales are yet to be elucidated. Previous study found that sporangiospore size and calcineurin are related to the virulence in Mucor, in which larger spores are more virulent in an animal mucormycosis model and loss of a calcineurin A catalytic subunit CnaA results in larger spore production and virulent phenotype. The M. circinelloides genome is known to harbor twelve gpa (gpa1 to gpa12) encoding G-protein alpha subunits and the transcripts of the gpa11 and gpa12 comprise nearly 72% of all twelve gpa genes transcript in spores. In this study we demonstrated that loss of function of Gpa11 and Gpa12 led to larger spore size associated with reduced activation of the calcineurin pathway. Interestingly, we found lower levels of the cnaA mRNAs in sporangiospores from the Δgpa12 and double Δgpa11/Δgpa12 mutant strains compared to wild-type and the ΔcnaA mutant had significantly lower gpa11 and gpa12 mRNA levels compared to wild-type. However, in contrast to the high virulence showed by the large spores of ΔcnaA, the spores from Δgpa11/Δgpa12 were avirulent and produced lower tissue invasion and cellular damage, suggesting that the gpa11 and gpa12 define a signal pathway with two branches. One of the branches controls spore size through regulation of calcineurin pathway, whereas virulences is controlled by an independent pathway. This virulence-related regulatory pathway could control the expression of genes involved in cellular responses important for virulence, since sporangiospores of Δgpa11/Δgpa12 were less resistant to oxidative stress and phagocytosis by macrophages than the ΔcnaA and wild-type strains. The characterization of this pathway could contribute to decipher the signals and mechanism used by Mucorales to produce mucormycosis.
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Affiliation(s)
- J. Alberto Patiño-Medina
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo (UMSNH), Morelia, Michoacán, México
| | - Nancy Y. Reyes-Mares
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo (UMSNH), Morelia, Michoacán, México
| | - Marco I. Valle-Maldonado
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo (UMSNH), Morelia, Michoacán, México
| | - Irvin E. Jácome-Galarza
- Departamento de Biología Molecular, Laboratorio Estatal de Salud Pública del Estado de Michoacán, Morelia, Michoacán, México
| | - Carlos Pérez-Arques
- Departamento de Genética y Microbiología, Facultad de Biología, Universidad de Murcia, Murcia, España
| | - Rosa E. Nuñez-Anita
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Michoacana de San Nicolás Hidalgo, Morelia, Michoacán, Mexico
| | - Jesús Campos-García
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo (UMSNH), Morelia, Michoacán, México
| | - Verónica Anaya-Martínez
- Facultad de Ciencias de la Salud, Universidad Anáhuac, Naucalpan de Juarez, Estado de México, México
| | - Rafael Ortiz-Alvarado
- Facultad de Químico Farmacobiología, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacan, México
| | - Martha I. Ramírez-Díaz
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo (UMSNH), Morelia, Michoacán, México
| | - Soo Chan Lee
- Department of Biology, South Texas Center of Emerging Infectious Diseases (STCEID), University of Texas at San Antonio, San Antonio, Texas, United States of America
| | - Victoriano Garre
- Departamento de Genética y Microbiología, Facultad de Biología, Universidad de Murcia, Murcia, España
| | - Víctor Meza-Carmen
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo (UMSNH), Morelia, Michoacán, México
- * E-mail:
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18
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Morales SI, Martínez AM, Figueroa JI, Campos-García J, Gómez-Tagle A, Lobit P, Smagghe G, Pineda S. Foliar persistence and residual activity of four insecticides of different mode of action on the predator Engytatus varians (Hemiptera: Miridae). Chemosphere 2019; 235:76-83. [PMID: 31255768 DOI: 10.1016/j.chemosphere.2019.06.163] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Revised: 06/20/2019] [Accepted: 06/21/2019] [Indexed: 06/09/2023]
Abstract
A greenhouse study was conducted to investigate the degradation kinetics of spinosad, flufenoxuron, dimethoate and imidacloprid in tomato (Solanum lycopersicum L.) foliage and their residual toxicity on Engytatus varians (Distant) (Hemiptera: Miridae), a predator of the tomato psyllid Bactericera cockerelli (Sulcer) (Hemiptera: Triozidae). Insecticides were sprayed at 100% and 50% of their maximum field-registered concentrations (MFRC). Starting 6 h after spraying, leaf samples were taken every 10 d for 40 d and analyzed while E. varians adults were exposed to treated leaves to evaluate residual toxicity. Immediately after application at 100% MFRC, the residue concentrations were 73.34 μg g-1 spinosyn A and 59.2 μg g-1 spinosyn D, 9.21 μg g-1 flufenoxuron, 71.49 μg g-1 dimethoate and 31.74 μg g-1 imidacloprid. At 50% MFRC, initial residue concentrations were between 75% and 90% those at 100% MFRC. The estimated half-life (DT50) of spinosyns A and D, flufenoxuron, and dimethoate was between 34 and 40 d, while that of imidacloprid was 112 d. Flufenoxuron caused no mortality, while mortality due to spinosad was less than 10%, and only during the first 10 d. Mortality caused by either imidacloprid or dimethoate was around 100% up to 10 d after application, then decreased to around 30% after 40 d. Dimethoate toxicity was approximately proportional to residue concentration, while for imidacloprid there was an apparent threshold around 15 μg g-1. These results can be used to establish periods harmless for release of E. varians in the control of B. cockerelli on tomato crops under greenhouse conditions.
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Affiliation(s)
- Sinue I Morales
- Instituto de Investigaciones Agropecuarias y Forestales. Universidad Michoacana de San Nicolás de Hidalgo. Km. 9.5 Carretera Morelia-Zinapécuaro, 58880, Tarímbaro, Michoacán, Mexico.
| | - Ana M Martínez
- Instituto de Investigaciones Agropecuarias y Forestales. Universidad Michoacana de San Nicolás de Hidalgo. Km. 9.5 Carretera Morelia-Zinapécuaro, 58880, Tarímbaro, Michoacán, Mexico.
| | - José I Figueroa
- Instituto de Investigaciones Agropecuarias y Forestales. Universidad Michoacana de San Nicolás de Hidalgo. Km. 9.5 Carretera Morelia-Zinapécuaro, 58880, Tarímbaro, Michoacán, Mexico.
| | - Jesús Campos-García
- Instituto de Investigaciones Químico Biológicas. Universidad Michoacana de San Nicolás de Hidalgo. Edif. B-3, Ciudad Universitaria, 58030, Morelia, Michoacán, Mexico.
| | - Alberto Gómez-Tagle
- Instituto de Investigaciones sobre Recursos Naturales. Universidad Michoacana de San Nicolás de Hidalgo. San Juanito Itzícuaro S/N Col. Nueva Esperanza, 58330, Morelia, Michoacán, Mexico.
| | - Philippe Lobit
- Instituto de Investigaciones Agropecuarias y Forestales. Universidad Michoacana de San Nicolás de Hidalgo. Km. 9.5 Carretera Morelia-Zinapécuaro, 58880, Tarímbaro, Michoacán, Mexico.
| | - Guy Smagghe
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, B-9000, Belgium.
| | - Samuel Pineda
- Instituto de Investigaciones Agropecuarias y Forestales. Universidad Michoacana de San Nicolás de Hidalgo. Km. 9.5 Carretera Morelia-Zinapécuaro, 58880, Tarímbaro, Michoacán, Mexico.
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Calleja LF, Belmont-Díaz JA, Medina-Contreras O, Quezada H, Yoval-Sánchez B, Campos-García J, Rodríguez-Zavala JS. Omeprazole as a potent activator of human cytosolic aldehyde dehydrogenase ALDH1A1. Biochim Biophys Acta Gen Subj 2019; 1864:129451. [PMID: 31678145 DOI: 10.1016/j.bbagen.2019.129451] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 09/30/2019] [Accepted: 10/23/2019] [Indexed: 01/05/2023]
Abstract
BACKGROUND Accumulation of lipid aldehydes plays a key role in the etiology of human diseases where high levels of oxidative stress are generated. In this regard, activation of aldehyde dehydrogenases (ALDHs) prevents oxidative tissue damage during ischemia-reperfusion processes. Although omeprazole is used to reduce stomach gastric acid production, in the present work this drug is described as the most potent activator of human ALDH1A1 reported yet. METHODS Docking analysis was performed to predict the interactions of omeprazole with the enzyme. Recombinant human ALDH1A1 was used to assess the effect of omeprazole on the kinetic properties. Temperature treatment and mass spectrometry were conducted to address the nature of binding of the activator to the enzyme. Finally, the effect of omeprazole was evaluated in an in vivo model of oxidative stress, using E. coli cells expressing the human ALDH1A1. RESULTS Omeprazole interacted with the aldehyde binding site, increasing 4-6 fold the activity of human ALDH1A1, modified the kinetic properties, altering the order of binding of substrates and release of products, and protected the enzyme from inactivation by lipid aldehydes. Furthermore, omeprazole protected E. coli cells over-expressing ALDH1A1 from the effects of oxidative stress generated by H2O2 exposure, reducing the levels of lipid aldehydes and preserving ALDH activity. CONCLUSION Omeprazole can be repositioned as a potent activator of human ALDH1A1 and may be proposed for its use in therapeutic strategies, to attenuate the damage generated during oxidative stress events occurring in different human pathologies.
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Affiliation(s)
- Luis Francisco Calleja
- Departamento de Bioquímica, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico 14080
| | | | - Oscar Medina-Contreras
- Laboratorio de Investigación en Inmunología y Proteómica, Hospital Infantil de México Federico Gómez, Mexico City, Mexico 06720
| | - Héctor Quezada
- Laboratorio de Investigación en Inmunología y Proteómica, Hospital Infantil de México Federico Gómez, Mexico City, Mexico 06720
| | - Belem Yoval-Sánchez
- Departamento de Bioquímica, Instituto Nacional de Cardiología Ignacio Chávez, Mexico City, Mexico 14080
| | - Jesús Campos-García
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mich., Mexico 58030
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20
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López-Bucio JS, Salmerón-Barrera GJ, Ravelo-Ortega G, Raya-González J, León P, de la Cruz HR, Campos-García J, López-Bucio J, Guevara-García ÁA. Mitogen-activated protein kinase 6 integrates phosphate and iron responses for indeterminate root growth in Arabidopsis thaliana. Planta 2019; 250:1177-1189. [PMID: 31190117 DOI: 10.1007/s00425-019-03212-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 06/06/2019] [Indexed: 05/21/2023]
Abstract
A MAPK module, of which MPK6 kinase is an important component, is involved in the coordination of the responses to Pi and Fe in the primary root meristem of Arabidopsis thaliana. Phosphate (Pi) deficiency induces determinate primary root growth in Arabidopsis through cessation of cell division in the meristem, which is linked to an increased iron (Fe) accumulation. Here, we show that Mitogen-Activated Protein Kinase6 (MPK6) has a role in Arabidopsis primary root growth under low Pi stress. MPK6 activity is induced in roots in response to low Pi, and such induction is enhanced by Fe supplementation, suggesting an MPK6 role in coordinating Pi/Fe balance in mediating root growth. The differentiation of the root meristem induced by low Pi levels correlates with altered expression of auxin-inducible genes and auxin transporter levels via MPK6. Our results indicate a critical role of the MPK6 kinase in coordinating meristem cell activity to Pi and Fe availability for proper primary root growth.
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Affiliation(s)
- Jesús Salvador López-Bucio
- CONACYT-Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, CP 58030, Morelia, Michoacán, Mexico.
| | | | - Gustavo Ravelo-Ortega
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, CP 58030, Morelia, Michoacán, Mexico
| | - Javier Raya-González
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, CP 58030, Morelia, Michoacán, Mexico
| | - Patricia León
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, CP 62250, Cuernavaca, Morelos, Mexico
| | - Homero Reyes de la Cruz
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, CP 58030, Morelia, Michoacán, Mexico
| | - Jesús Campos-García
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, CP 58030, Morelia, Michoacán, Mexico
| | - José López-Bucio
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, CP 58030, Morelia, Michoacán, Mexico
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21
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Patiño-Medina JA, Valle-Maldonado MI, Maldonado-Herrera G, Pérez-Arques C, Jácome-Galarza IE, Díaz-Pérez C, Díaz-Pérez AL, Araiza-Cervantes CA, Villagomez-Castro JC, Campos-García J, Ramírez-Díaz MI, Garre V, Meza-Carmen V. Role of Arf-like proteins (Arl1 and Arl2) of Mucor circinelloides in virulence and antifungal susceptibility. Fungal Genet Biol 2019; 129:40-51. [DOI: 10.1016/j.fgb.2019.04.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 04/17/2019] [Accepted: 04/19/2019] [Indexed: 10/27/2022]
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Orozco-Mosqueda MDC, Duan J, DiBernardo M, Zetter E, Campos-García J, Glick BR, Santoyo G. The Production of ACC Deaminase and Trehalose by the Plant Growth Promoting Bacterium Pseudomonas sp. UW4 Synergistically Protect Tomato Plants Against Salt Stress. Front Microbiol 2019; 10:1392. [PMID: 31275294 PMCID: PMC6594411 DOI: 10.3389/fmicb.2019.01392] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 06/03/2019] [Indexed: 11/21/2022] Open
Abstract
Soil salinity is a major problem in agriculture. However, crop growth and productivity can be improved by the inoculation of plants with beneficial bacteria that promote plant growth under stress conditions such as high salinity. Here, we evaluated 1-aminocyclopropane-1-carboxylate (ACC) deaminase activity and trehalose accumulation of the plant growth promoting bacterium Pseudomonas sp. UW4. Mutant strains (mutated at acdS, treS, or both) and a trehalose over-expressing strain (OxtreS) were constructed. The acdS mutant was ACC deaminase minus; the treS- strain significantly decreased its accumulation of trehalose, and the double mutant was affected in both characteristics. The OxtreS strain accumulated more trehalose than the wild-type strain UW4. Inoculating tomato plants subjected to salt stress with these strains significantly impacted root and shoot length, total dry weight, and chlorophyll content. The evaluated parameters in the single acdS and treS mutants were impaired. The double acdS/treS mutant was negatively affected to a greater extent than the single-gene mutants, suggesting a synergistic action of these activities in the protection of plants against salt stress. Finally, the OxtreS overproducing strain protected tomato plants to a greater extent under stress conditions than the wild-type strain. Taken together, these results are consistent with the synergistic action of ACC deaminase and trehalose in Pseudomonas sp. UW4 in the protection of tomato plants against salt stress.
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Affiliation(s)
- Ma Del Carmen Orozco-Mosqueda
- Department of Biology, University of Waterloo, Waterloo, ON, Canada.,Facultad de Agrobiología "Presidente Juárez," Universidad Michoacana de San Nicolás de Hidalgo, Uruapan, Mexico
| | - Jin Duan
- Department of Biology, University of Waterloo, Waterloo, ON, Canada
| | | | - Elizabeth Zetter
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico
| | - Jesús Campos-García
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico
| | - Bernard R Glick
- Department of Biology, University of Waterloo, Waterloo, ON, Canada
| | - Gustavo Santoyo
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico
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Serrato-Gamiño N, Salgado-Lora MG, Chávez-Moctezuma MP, Campos-García J, Cervantes C. Analysis of the ars gene cluster from highly arsenic-resistant Burkholderia xenovorans LB400. World J Microbiol Biotechnol 2018; 34:142. [PMID: 30203106 DOI: 10.1007/s11274-018-2526-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 08/29/2018] [Indexed: 11/25/2022]
Abstract
The Burkholderia xenovorans LB400 multireplicon genome displays a relatively high proportion of redundant genes, including several genes predicted to be related to arsenic resistance. These comprise an ars gene cluster, composed of the arsR3, acr3, arsC1 and arsH genes, as well as two arsB, arsC2, and seven individual arsR genes. The objective of this work was to elucidate the involvement of the ars gene cluster in arsenic resistance by the LB400 strain. Susceptibility tests showed that B. xenovorans LB400 is highly resistant to arsenate and arsenite. Arsenic resistance was induced by prior exposure of LB400 to arsenate or arsenite. reverse transcription-polymerase chain reaction assays using total RNA from LB400 showed arsenite-induced transcription of the arsR3 gene, suggesting that the ars gene cluster constitutes an arsenite-responsive operon. Transfer of cloned LB400 ars genes to heterologous Escherichia coli or Pseudomonas aeruginosa strains demonstrated that the ArsR3 transcriptional repressor, ArsC1 arsenate reductase, and the Acr3 arsenite efflux pump encoded in the LB400 ars gene cluster, are all associated to the arsenic resistance phenotype of this strain. The ars gene cluster from Burkholderia xenovorans LB400 is responsible for the inducible arsenic-resistance phenotype of the bacterium.
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Affiliation(s)
- Nallely Serrato-Gamiño
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana, Edificio B-3, Ciudad Universitaria, 58030, Morelia, Michoacán, Mexico
| | - Ma Guadalupe Salgado-Lora
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana, Edificio B-3, Ciudad Universitaria, 58030, Morelia, Michoacán, Mexico
| | - Martha P Chávez-Moctezuma
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana, Edificio B-3, Ciudad Universitaria, 58030, Morelia, Michoacán, Mexico
| | - Jesús Campos-García
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana, Edificio B-3, Ciudad Universitaria, 58030, Morelia, Michoacán, Mexico
| | - Carlos Cervantes
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana, Edificio B-3, Ciudad Universitaria, 58030, Morelia, Michoacán, Mexico.
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Gomez-Gallardo M, Sánchez LA, Díaz-Pérez AL, Cortés-Rojo C, Campos-García J. Data on the role of iba57p in free Fe 2+ release and O 2∙- generation in Saccharomyces cerevisiae. Data Brief 2018; 18:198-202. [PMID: 29900191 PMCID: PMC5996255 DOI: 10.1016/j.dib.2018.03.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 03/03/2018] [Accepted: 03/05/2018] [Indexed: 11/05/2022] Open
Abstract
The related study has confirmed that in Saccharomyces cerevisiae, iba57 protein participates in maturation of the [2Fe–2S] cluster into the Rieske protein, which plays important roles in the conformation and functionality of mitochondrial supercomplexes III/IV in the electron transport chain (Sánchez et al., 2018) [1]. We determined in S. cerevisiae the effects of mutation in the IBA57 gene on reactive oxygen species (ROS) and iron homeostasis. Flow cytometry and confocal microscopy analyses showed an increased generation of ROS, correlated with free Fe2+ release in the IBA57 mutant yeast. Data obtained support that a dysfunction in the Rieske protein has close relationship between ROS generation and free Fe2+ content, and which is possible that free Fe2+ release mainly proceeds from [Fe–S] cluster-containing proteins.
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Affiliation(s)
- Mauricio Gomez-Gallardo
- Lab. de Biotecnología Microbiana, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mich., Mexico
| | - Luis A Sánchez
- Lab. de Biotecnología Microbiana, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mich., Mexico
| | - Alma L Díaz-Pérez
- Lab. de Biotecnología Microbiana, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mich., Mexico
| | - Christian Cortés-Rojo
- Lab. de Bioquímica, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mich., Mexico
| | - Jesús Campos-García
- Lab. de Biotecnología Microbiana, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mich., Mexico
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Díaz-Pérez AL, Núñez C, Meza Carmen V, Campos-García J. The expression of the genes involved in leucine catabolism of Pseudomonas aeruginosa is controlled by the transcriptional regulator LiuR and by the CbrAB/Crc system. Res Microbiol 2018; 169:324-334. [PMID: 29787835 DOI: 10.1016/j.resmic.2018.05.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2017] [Revised: 05/09/2018] [Accepted: 05/15/2018] [Indexed: 12/29/2022]
Abstract
Pseudomonas aeruginosa metabolizes leucine through the leucine/isovalerate utilization pathway, whose enzymes are encoded in the liuRABCDE gene cluster (liu). In this study, we investigated the role of the LiuR protein in the liu cluster regulation. Our results indicated that liu expression is regulated at the transcriptional level by LiuR. Mobility shift assays using purified recombinant His-tagged LiuR showed that it was able to bind at the promoter region of liuR, in a dose-dependent manner. Results revealed that expression of the liu operon is subjected to carbon catabolite repression control (CCR); protein LiuD was strongly expressed in the presence of leucine, but it was repressed in the presence of glucose or succinate. Furthermore, this CCR control was dependent on LiuR as in the liuR- mutant the LiuD protein was strongly expressed in all the carbon sources tested. In agreement with this result, in the absence of the Crc protein, LiuD was expressed independently of the carbon source used, whereas in a cbrB- mutant its expression was severely impaired. The results indicated that the liu cluster is subjected to a coordinated transcriptional and translational regulation by the LiuR repressor and by the CbrAB/Crc system, respectively, in response to the available carbon source.
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Affiliation(s)
- Alma Laura Díaz-Pérez
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, 58030, Mexico.
| | - Cinthia Núñez
- Departamento de Microbiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad 2001, Col. Chamilpa, Cuernavaca, Morelos, 62210, Mexico.
| | - Victor Meza Carmen
- Laboratorio de Diferenciación Celular, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, 58030, Mexico.
| | - Jesús Campos-García
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, 58030, Mexico.
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Campos-García J, Vargas A, Farías-Rosales L, Miranda AL, Meza-Carmen V, Díaz-Pérez AL. Improving the Organoleptic Properties of a Craft Mezcal Beverage by Increasing Fatty Acid Ethyl Ester Contents through ATF1 Expression in an Engineered Kluyveromyces marxianus UMPe-1 Yeast. J Agric Food Chem 2018; 66:4469-4480. [PMID: 29644852 DOI: 10.1021/acs.jafc.8b00730] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Mezcal, a traditional beverage that originated in Mexico, is produced from species of the Agavaceae family. The esters associated with the yeasts utilized during fermentation are important for improving the organoleptic properties of the beverage. We improved the ester contents in a mezcal beverage by using the yeast Kluyveromyces marxianus, which was engineered with the ATF1 gene. ATF1 expression in the recombinant yeast significantly increased compared with that in the parental yeast, but its fermentative parameters were unchanged. Volatile-organic-compound-content analysis showed that esters had significantly increased in the mezcal produced with the engineered yeast. In a sensory-panel test, 48% of the panelists preferred the mezcal produced from the engineered yeast, 30% preferred the mezcal produced from the wild type, and 15 and 7% preferred the two mezcal types produced following the routine procedure. Correlation analysis showed that the fruitiness/sweetness description of the mezcal produced using the ATF1-engineered K. marxianus yeast correlated with the content of the esters, whose presence improved the organoleptic properties of the craft mezcal beverage.
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Affiliation(s)
- Jesús Campos-García
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico Biológicas , Universidad Michoacana de San Nicolás de Hidalgo , Edificio B-3, Ciudad Universitaria , 58030 Morelia , Michoacán , Mexico
| | - Alejandra Vargas
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico Biológicas , Universidad Michoacana de San Nicolás de Hidalgo , Edificio B-3, Ciudad Universitaria , 58030 Morelia , Michoacán , Mexico
- Tecnológico Nacional de México , Instituto Tecnológico de Morelia , 58120 Morelia , Michoacán , Mexico
| | - Lorena Farías-Rosales
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico Biológicas , Universidad Michoacana de San Nicolás de Hidalgo , Edificio B-3, Ciudad Universitaria , 58030 Morelia , Michoacán , Mexico
| | - Ana L Miranda
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico Biológicas , Universidad Michoacana de San Nicolás de Hidalgo , Edificio B-3, Ciudad Universitaria , 58030 Morelia , Michoacán , Mexico
| | - Víctor Meza-Carmen
- Laboratorio de Diferenciación Celular, Instituto de Investigaciones Químico Biológicas , Universidad Michoacana de San Nicolás de Hidalgo , 58030 Morelia , Michoacán , Mexico
| | - Alma L Díaz-Pérez
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico Biológicas , Universidad Michoacana de San Nicolás de Hidalgo , Edificio B-3, Ciudad Universitaria , 58030 Morelia , Michoacán , Mexico
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Sánchez LA, Gómez-Gallardo M, Díaz-Pérez AL, Cortés-Rojo C, Campos-García J. Iba57p participates in maturation of a [2Fe-2S]-cluster Rieske protein and in formation of supercomplexes III/IV of Saccharomyces cerevisiae electron transport chain. Mitochondrion 2018; 44:75-84. [PMID: 29343425 DOI: 10.1016/j.mito.2018.01.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 10/20/2017] [Accepted: 01/10/2018] [Indexed: 11/15/2022]
Abstract
The [Fe-S] late-acting subsystem comprised of Isa1p/Isa2p, Grx5p, and Iba57p proteins (Fe-S-IBG subsystem) is involved in [4Fe-4S]-cluster protein assembly. The effect of deleting IBA57 in Saccharomyces cerevisiae on mitochondrial respiratory complex integration and functionality associated with Rieske protein maturation was evaluated. The iba57Δ mutant showed decreased expression and maturation of the Rieske protein. The loss of Rieske protein caused by IBA57 deletion affected the structure of supercomplexes III2IV2 and III2IV1 and their integration into the mitochondria, causing dysfunction in the electron transport chain. These effects were correlated with decreased cytochrome functionality and content in the iba57Δ mutant. These findings suggest that Iba57p participates in maturation of the [2Fe-2S]-cluster into the Rieske protein and that Rieske protein plays important roles in the conformation and functionality of mitochondrial supercomplex III/IV in the electron transport chain.
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Affiliation(s)
- Luis A Sánchez
- Lab. de Biotecnología Microbiana, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, Mexico
| | - Mauricio Gómez-Gallardo
- Lab. de Biotecnología Microbiana, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, Mexico
| | - Alma L Díaz-Pérez
- Lab. de Biotecnología Microbiana, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, Mexico
| | - Christian Cortés-Rojo
- Lab. de Bioquímica, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, Mexico
| | - Jesús Campos-García
- Lab. de Biotecnología Microbiana, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, Mexico.
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Lara-Romero J, Campos-García J, Dasgupta-Schubert N, Borjas-García S, Tiwari DK, Paraguay-Delgado F, Jiménez-Sandoval S, Alonso-Nuñez G, Gómez-Romero M, Lindig-Cisneros R, Reyes De la Cruz H, Villegas JA. Biological effects of carbon nanotubes generated in forest wildfire ecosystems rich in resinous trees on native plants. PeerJ 2017; 5:e3658. [PMID: 28828256 PMCID: PMC5562139 DOI: 10.7717/peerj.3658] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 07/15/2017] [Indexed: 12/12/2022] Open
Abstract
Carbon nanotubes (CNTs) have a broad range of applications and are generally considered human-engineered nanomaterials. However, carbon nanostructures have been found in ice cores and oil wells, suggesting that nature may provide appropriate conditions for CNT synthesis. During forest wildfires, materials such as turpentine and conifer tissues containing iron under high temperatures may create chemical conditions favorable for CNT generation, similar to those in synthetic methods. Here, we show evidence of naturally occurring multiwalled carbon nanotubes (MWCNTs) produced from Pinus oocarpa and Pinus pseudostrobus, following a forest wildfire. The MWCNTs showed an average of 10 walls, with internal diameters of ∼2.5 nm and outer diameters of ∼14.5 nm. To verify whether MWCNT generation during forest wildfires has a biological effect on some characteristic plant species of these ecosystems, germination and development of seedlings were conducted. Results show that the utilization of comparable synthetic MWCNTs increased seed germination rates and the development of Lupinus elegans and Eysenhardtia polystachya, two plants species found in the burned forest ecosystem. The finding provides evidence that supports the generation and possible ecological functions of MWCNTs in nature.
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Affiliation(s)
- Javier Lara-Romero
- Facultad de Ingeniería Química, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
| | - Jesús Campos-García
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
| | | | | | - D K Tiwari
- CONACYT-El Colegio de Michoacán/Ladipa, La Piedad, México
| | | | - Sergio Jiménez-Sandoval
- Centro de Investigación y de Estudios Avanzados del IPN, Unidad Querétaro, Querétaro, México
| | - Gabriel Alonso-Nuñez
- Centro de Nanociencias y Nanotecnología, Universidad Nacional Autónoma de México, Ensenada, Baja California, Mexico
| | - Mariela Gómez-Romero
- Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México, Morelia, Michoacán, Mexico
| | - Roberto Lindig-Cisneros
- Instituto de Investigaciones en Ecosistemas y Sustentabilidad, Universidad Nacional Autónoma de México, Morelia, Michoacán, Mexico
| | - Homero Reyes De la Cruz
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
| | - Javier A Villegas
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
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González O, Ortíz-Castro R, Díaz-Pérez C, Díaz-Pérez AL, Magaña-Dueñas V, López-Bucio J, Campos-García J. Non-ribosomal Peptide Synthases from Pseudomonas aeruginosa Play a Role in Cyclodipeptide Biosynthesis, Quorum-Sensing Regulation, and Root Development in a Plant Host. Microb Ecol 2017; 73:616-629. [PMID: 27900439 DOI: 10.1007/s00248-016-0896-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Accepted: 11/06/2016] [Indexed: 06/06/2023]
Abstract
Diverse molecules mediate cross-kingdom communication between bacteria and their eukaryotic partners and determine pathogenic or symbiotic relationships. N-acyl-L-homoserine lactone-dependent quorum-sensing signaling represses the biosynthesis of bacterial cyclodipeptides (CDPs) that act as auxin signal mimics in the host plant Arabidopsis thaliana. In this work, we performed bioinformatics, biochemical, and plant growth analyses to identify non-ribosomal peptide synthase (NRPS) proteins of Pseudomonas aeruginosa, which are involved in CDP synthesis. A reverse genetics strategy allowed the identification of the genes encoding putative multi-modular-NRPS (MM-NRPS). Mutations in these genes affected the synthesis of the CDPs cyclo(L-Pro-L-Val), cyclo(L-Pro-L-Leu), and cyclo(L-Pro-L-Tyr), while showing wild-type-like levels of virulence factors, such as violacein, elastase, and pyocyanin. When analyzing the bioactivity of purified, naturally produced CDPs, it was found that cyclo(L-Pro-L-Tyr) and cyclo(L-Pro-L-Val) were capable of antagonizing quorum-sensing-LasR (QS-LasR)-dependent signaling in a contrasting manner in the cell-free supernatants of the selected NRPS mutants, which showed QS induction. Using a bacteria-plant interaction system, we further show that the pvdJ, ambB, and pchE P. aeruginosa mutants failed to repress primary root growth, but improved root branching in A. thaliana seedlings. These results indicated that the CDP production in P. aeruginosa depended on the functional MM-NRPS, which influences quorum-sensing of bacteria and plays a role in root architecture remodeling.
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Affiliation(s)
- Omar González
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edif. B-3, Ciudad Universitaria, 58030, Morelia, Michoacán, México
| | - Randy Ortíz-Castro
- Laboratorio de Biología del Desarrollo Vegetal, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edif. A1´, Ciudad Universitaria, 58030, Morelia, Michoacán, México
- Instituto de Ecología A.C., Xalapa, Ver., México
| | - César Díaz-Pérez
- Depto. Ingeniería Agroindustrial, División de Ciencias de la Salud e Ingenierías, Universidad de Guanajuato, Salvatierra, Gto., México
| | - Alma L Díaz-Pérez
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edif. B-3, Ciudad Universitaria, 58030, Morelia, Michoacán, México
| | - Viridiana Magaña-Dueñas
- Laboratorio de Biología del Desarrollo Vegetal, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edif. A1´, Ciudad Universitaria, 58030, Morelia, Michoacán, México
| | - José López-Bucio
- Laboratorio de Biología del Desarrollo Vegetal, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edif. A1´, Ciudad Universitaria, 58030, Morelia, Michoacán, México
| | - Jesús Campos-García
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edif. B-3, Ciudad Universitaria, 58030, Morelia, Michoacán, México.
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Díaz-Magaña A, Chávez-Moctezuma MP, Campos-García J, Ramírez-Díaz MI, Cervantes C. A plasmid-encoded DsbA homologue is a growth-phase regulated thioredoxin. Plasmid 2017; 89:37-41. [PMID: 28063893 DOI: 10.1016/j.plasmid.2017.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2016] [Revised: 01/01/2017] [Accepted: 01/02/2017] [Indexed: 11/24/2022]
Abstract
The Pseudomonas aeruginosa plasmid pUM505 contains in a pathogenicity island the dsbA2 gene, which encodes a product with similarity to DsbA protein disulfide isomerases, enzymes that catalyze formation and isomerization of disulfide bonds in protein cysteine residues. Using transcriptional fusions, it was found that dsbA2 gene promoter is activated during the stationary phase, suggesting that DsbA2 protein may be required for adaptive changes that occur during this stage of bacterial growth. Transfer of the pUM505 dsbA2 gene to a cadmium-sensitive P. aeruginosa PAO1-derivative affected in the chromosomal dsbA gene, restored cadmium resistance, suggesting a role of DsbA2 in protecting protein disulfide bonds. PAO1 dsbA2 transformants displayed increased sensitivity to intercalating agent mitomycin C, indicating that DsbA2 functions as a thioredoxin enzyme able to modify and activate toxicity of this compound. These results highlight the adaptive role of the pUM505 plasmid in its P. aeruginosa hosts.
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Affiliation(s)
- Amada Díaz-Magaña
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana, Morelia, Michoacán, Mexico
| | | | - Jesús Campos-García
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana, Morelia, Michoacán, Mexico
| | - Martha I Ramírez-Díaz
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana, Morelia, Michoacán, Mexico
| | - Carlos Cervantes
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana, Morelia, Michoacán, Mexico..
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Mendoza-Chávez EA, Rodríguez-Olalde NE, Maya-Yescas R, Campos-García J, Saucedo-Luna J, Castro-Montoya AJ. Thermodynamic Analysis of Ethanol Synthesis from Glycerol by Two-Step Reactor Sequence. International Journal of Chemical Reactor Engineering 2016. [DOI: 10.1515/ijcre-2015-0168] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Highlights
–Glycerol was dry-reformed to syngas and sequentially utilized for ethanol synthesis
–Adding CO2 to the glycerol dry reforming reactor was advantageous for ethanol synthesis
–Maximum yield was 1 mole ethanol per mole glycerol at CO2/glycerol ratio≥2
–ethanol synthesis from syngas was dependent on the temperature and CO2/glycerol ratio
–Wasted glycerol from biodiesel-manufacturing is suitable for syngas/ethanol production
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Valle-Maldonado MI, Jácome-Galarza IE, Díaz-Pérez AL, Martínez-Cadena G, Campos-García J, Ramírez-Díaz MI, Reyes-De la Cruz H, Riveros-Rosas H, Díaz-Pérez C, Meza-Carmen V. Phylogenetic analysis of fungal heterotrimeric G protein-encoding genes and their expression during dimorphism in Mucor circinelloides. Fungal Biol 2015; 119:1179-1193. [DOI: 10.1016/j.funbio.2015.08.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 08/08/2015] [Accepted: 08/10/2015] [Indexed: 01/27/2023]
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Valle-Maldonado MI, Jácome-Galarza IE, Gutiérrez-Corona F, Ramírez-Díaz MI, Campos-García J, Meza-Carmen V. Selection of reference genes for quantitative real time RT-PCR during dimorphism in the zygomycete Mucor circinelloides. Mol Biol Rep 2014; 42:705-11. [PMID: 25391770 DOI: 10.1007/s11033-014-3818-x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Accepted: 11/07/2014] [Indexed: 12/17/2022]
Abstract
Mucor circinelloides is a dimorphic fungal model for studying several biological processes including cell differentiation (yeast-mold transitions) as well as biodiesel and carotene production. The recent release of the first draft sequence of the M. circinelloides genome, combined with the availability of analytical methods to determine patterns of gene expression, such as quantitative Reverse transcription-Polymerase chain reaction (qRT-PCR), and the development of molecular genetic tools for the manipulation of the fungus, may help identify M. circinelloides gene products and analyze their relevance in different biological processes. However, no information is available on M. circinelloides genes of stable expression that could serve as internal references in qRT-PCR analyses. One approach to solve this problem consists in the use of housekeeping genes as internal references. However, validation of the usability of these reference genes is a fundamental step prior to initiating qRT-PCR assays. This work evaluates expression of several constitutive genes by qRT-PCR throughout the morphological differentiation stages of M. circinelloides; our results indicate that tfc-1 and ef-1 are the most stable genes for qRT-PCR assays during differentiation studies and they are proposed as reference genes to carry out gene expression studies in this fungus.
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Affiliation(s)
- Marco I Valle-Maldonado
- Laboratorio de Biotecnología Microbiana, Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nícolás de Hidalgo, 58030, Morelia, Michoacán, Mexico
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Gomez M, Pérez-Gallardo RV, Sánchez LA, Díaz-Pérez AL, Cortés-Rojo C, Meza Carmen V, Saavedra-Molina A, Lara-Romero J, Jiménez-Sandoval S, Rodríguez F, Rodríguez-Zavala JS, Campos-García J. Malfunctioning of the iron-sulfur cluster assembly machinery in Saccharomyces cerevisiae produces oxidative stress via an iron-dependent mechanism, causing dysfunction in respiratory complexes. PLoS One 2014; 9:e111585. [PMID: 25356756 PMCID: PMC4214746 DOI: 10.1371/journal.pone.0111585] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Accepted: 10/06/2014] [Indexed: 12/30/2022] Open
Abstract
Biogenesis and recycling of iron-sulfur (Fe-S) clusters play important roles in the iron homeostasis mechanisms involved in mitochondrial function. In Saccharomyces cerevisiae, the Fe-S clusters are assembled into apoproteins by the iron-sulfur cluster machinery (ISC). The aim of the present study was to determine the effects of ISC gene deletion and consequent iron release under oxidative stress conditions on mitochondrial functionality in S. cerevisiae. Reactive oxygen species (ROS) generation, caused by H2O2, menadione, or ethanol, was associated with a loss of iron homeostasis and exacerbated by ISC system dysfunction. ISC mutants showed increased free Fe2+ content, exacerbated by ROS-inducers, causing an increase in ROS, which was decreased by the addition of an iron chelator. Our study suggests that the increment in free Fe2+ associated with ROS generation may have originated from mitochondria, probably Fe-S cluster proteins, under both normal and oxidative stress conditions, suggesting that Fe-S cluster anabolism is affected. Raman spectroscopy analysis and immunoblotting indicated that in mitochondria from SSQ1 and ISA1 mutants, the content of [Fe-S] centers was decreased, as was formation of Rieske protein-dependent supercomplex III2IV2, but this was not observed in the iron-deficient ATX1 and MRS4 mutants. In addition, the activity of complexes II and IV from the electron transport chain (ETC) was impaired or totally abolished in SSQ1 and ISA1 mutants. These results confirm that the ISC system plays important roles in iron homeostasis, ROS stress, and in assembly of supercomplexes III2IV2 and III2IV1, thus affecting the functionality of the respiratory chain.
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Affiliation(s)
- Mauricio Gomez
- Lab. Biotecnología Microbiana, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
| | - Rocío V. Pérez-Gallardo
- Lab. Biotecnología Microbiana, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
| | - Luis A. Sánchez
- Lab. Biotecnología Microbiana, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
| | - Alma L. Díaz-Pérez
- Lab. Biotecnología Microbiana, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
| | - Christian Cortés-Rojo
- Lab. de Bioquímica, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
| | - Victor Meza Carmen
- Lab. Biotecnología Microbiana, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
| | - Alfredo Saavedra-Molina
- Lab. de Bioquímica, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
| | - Javier Lara-Romero
- Facultad de Ingeniería Química, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
| | - Sergio Jiménez-Sandoval
- Centro de Investigación y de Estudios Avanzados del IPN, Unidad Querétaro, Querétaro, México
| | - Francisco Rodríguez
- Centro de Investigación y de Estudios Avanzados del IPN, Unidad Querétaro, Querétaro, México
| | | | - Jesús Campos-García
- Lab. Biotecnología Microbiana, Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
- * E-mail:
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Ortiz-Castro R, Pelagio-Flores R, Méndez-Bravo A, Ruiz-Herrera LF, Campos-García J, López-Bucio J. Pyocyanin, a virulence factor produced by Pseudomonas aeruginosa, alters root development through reactive oxygen species and ethylene signaling in Arabidopsis. Mol Plant Microbe Interact 2014; 27:364-78. [PMID: 24224532 DOI: 10.1094/mpmi-08-13-0219-r] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Pyocyanin acts as a virulence factor in Pseudomonas aeruginosa, a plant and animal pathogen. In this study, we evaluated the effect of pyocyanin on growth and development of Arabidopsis seedlings. Root inoculation with P. aeruginosa PAO1 strain inhibited primary root growth in wild-type (WT) Arabidopsis seedlings. In contrast, single lasI- and double rhlI-/lasI- mutants of P. aeruginosa defective in pyocyanin production showed decreased root growth inhibition concomitant with an increased phytostimulation. Treatment with pyocyanin modulates root system architecture, inhibiting primary root growth and promoting lateral root and root hair formation without affecting meristem viability or causing cell death. These effects correlated with altered proportions of hydrogen peroxide and superoxide in root tips and with an inhibition of cell division and elongation. Mutant analyses showed that pyocyanin modulation of root growth was likely independent of auxin, cytokinin, and abscisic acid but required ethylene signaling because the Arabidopsis etr1-1, ein2-1, and ein3-1 ethylene-related mutants were less sensitive to pyocyanin-induced root stoppage and reactive oxygen species (ROS) distribution. Our findings suggest that pyocyanin is an important factor modulating the interplay between ROS production and root system architecture by an ethylene-dependent signaling.
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Aguirre OU, Martínez AM, Campos-García J, Hernández LA, Figueroa JI, Lobit P, Viñuela E, Chavarrieta JM, Smagghe G, Pineda S. Foliar persistence and residual activity of methoxyfenozide against beet armyworm (Lepidoptera: Noctuidae). Insect Sci 2013; 20:734-742. [PMID: 23956070 DOI: 10.1111/j.1744-7917.2012.01576.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/16/2012] [Indexed: 06/02/2023]
Abstract
A greenhouse study was conducted to investigate the persistence of methoxyfenozide in pepper (Capsicum annuum L.) foliage. An aqueous suspension of methoxyfenozide was sprayed on pepper plants at concentrations of 72 and 144 mg of active ingredient (a.i.)/L. Foliage was collected at different intervals of time (0, 3, 5, 10, 20, 30, 40, and 50 days) after the treatment, and the methoxyfenozide residue was measured by high-performance liquid chromatography. The foliage was also used in bioassays to determine the residual toxicity on and the consumption rate of the third-instar larvae of the beet armyworm, Spodoptera exigua (Hübner) (Lepidoptera: Noctuidae). The methoxyfenozide concentrations observed after 50 days had decreased to 19 and 69 μg/g per sample, corresponding to a loss of 61% and 28% from the application concentrations of 72 and 144 mg a.i./L, respectively. When fitting a first-order kinetics degradation model, the half-life (DT50 ) of this compound was 76 days. Both application concentrations of methoxyfenozide caused a high mortality rate (≥97%) when the larvae were fed the pepper foliage collected at all of the time intervals. Lastly, at all of the time points, the consumption rate by the larvae was reduced to between 57% and 92% for both concentrations that were bioassayed. Our results indicate that, under the present greenhouse conditions, the degradation of methoxyfenozide was slower than that reported by other authors and that its residues were highly toxic to S. exigua larvae. The implications of these results for the management programs of this pest are discussed.
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Affiliation(s)
- Omar-Ulises Aguirre
- Instituto de Investigaciones Agropecuarias y Forestales, Universidad Michoacana de San Nicolás de Hidalgo, Michoacán
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Pérez-Gallardo RV, Briones LS, Díaz-Pérez AL, Gutiérrez S, Rodríguez-Zavala JS, Campos-García J. Reactive oxygen species production induced by ethanol in Saccharomyces cerevisiae increases because of a dysfunctional mitochondrial iron-sulfur cluster assembly system. FEMS Yeast Res 2013; 13:804-19. [PMID: 24028658 DOI: 10.1111/1567-1364.12090] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Revised: 08/27/2013] [Accepted: 09/03/2013] [Indexed: 11/27/2022] Open
Abstract
Ethanol accumulation during fermentation contributes to the toxic effects in Saccharomyces cerevisiae, impairing its viability and fermentative capabilities. The iron-sulfur (Fe-S) cluster biogenesis is encoded by the ISC genes. Reactive oxygen species (ROS) generation is associated with iron release from Fe-S-containing enzymes. We evaluated ethanol toxicity, ROS generation, antioxidant response and mitochondrial integrity in S. cerevisiae ISC mutants. These mutants showed an impaired tolerance to ethanol. ROS generation increased substantially when ethanol accumulated at toxic concentrations under the fermentation process. At the cellular and mitochondrial levels, ROS were increased in yeast treated with ethanol and increased to a higher level in the ssq1∆, isa1∆, iba57∆ and grx5∆ mutants - hydrogen peroxide and superoxide were the main molecules detected. Additionally, ethanol treatment decreased GSH/GSSG ratio and increased catalase activity in the ISC mutants. Examination of cytochrome c integrity indicated that mitochondrial apoptosis was triggered following ethanol treatment. The findings indicate that the mechanism of ethanol toxicity occurs via ROS generation dependent on ISC assembly system functionality. In addition, mutations in the ISC genes in S. cerevisiae contribute to the increase in ROS concentration at the mitochondrial and cellular level, leading to depletion of the antioxidant responses and finally to mitochondrial apoptosis.
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Affiliation(s)
- Rocio V Pérez-Gallardo
- Lab de Biotecnología Microbiana, Instituto de Investigaciones Químico-Biológicas, Morelia, Michoacán, México
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Díaz-Pérez C, Díaz-Pérez AL, Rodríguez-Zavala JS, Campos-García J. Structural evidence for the involvement of the residues Ser187 and Tyr422 in substrate recognition in the 3-methylcrotonyl-coenzyme A carboxylase from Pseudomonas aeruginosa. ACTA ACUST UNITED AC 2013; 154:291-7. [DOI: 10.1093/jb/mvt055] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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López-Alvarez A, Díaz-Pérez AL, Sosa-Aguirre C, Macías-Rodríguez L, Campos-García J. Ethanol yield and volatile compound content in fermentation of agave must by Kluyveromyces marxianus UMPe-1 comparing with Saccharomyces cerevisiae baker's yeast used in tequila production. J Biosci Bioeng 2012; 113:614-8. [PMID: 22280963 DOI: 10.1016/j.jbiosc.2011.12.015] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2011] [Revised: 11/11/2011] [Accepted: 12/22/2011] [Indexed: 11/16/2022]
Abstract
In tequila production, fermentation is an important step. Fermentation determines the ethanol productivity and organoleptic properties of the beverage. In this study, a yeast isolated from native residual agave must was identified as Kluyveromyces marxianus UMPe-1 by 26S rRNA sequencing. This yeast was compared with the baker's yeast Saccharomyces cerevisiae Pan1. Our findings demonstrate that the UMPe-1 yeast was able to support the sugar content of agave must and glucose up to 22% (w/v) and tolerated 10% (v/v) ethanol concentration in the medium with 50% cells survival. Pilot and industrial fermentation of agave must tests showed that the K. marxianus UMPe-1 yeast produced ethanol with yields of 94% and 96% with respect to fermentable sugar content (glucose and fructose, constituting 98%). The S. cerevisiae Pan1 baker's yeast, however, which is commonly used in some tequila factories, showed 76% and 70% yield. At the industrial level, UMPe-1 yeast shows a maximum velocity of fermentable sugar consumption of 2.27g·L(-1)·h(-1) and ethanol production of 1.38g·L(-1)·h(-1), providing 58.78g ethanol·L(-1) at 72h fermentation, which corresponds to 96% yield. In addition, the major and minor volatile compounds in the tequila beverage obtained from UMPe-1 yeast were increased. Importantly, 29 volatile compounds were identified, while the beverage obtained from Pan1-yeast contained fewer compounds and in lower concentrations. The results suggest that the K. marxianus UMPe-1 is a suitable yeast for agave must fermentation, showing high ethanol productivity and increased volatile compound content comparing with a S. cerevisiae baker's yeast used in tequila production.
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Affiliation(s)
- Arnoldo López-Alvarez
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, México
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Chávez-Avilés M, Díaz-Pérez AL, Campos-García J. The bifunctional role of LiuE from Pseudomonas aeruginosa, displays additionally HIHG-CoA lyase enzymatic activity. Mol Biol Rep 2009; 37:1787-91. [PMID: 19597963 DOI: 10.1007/s11033-009-9611-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2009] [Accepted: 07/01/2009] [Indexed: 11/28/2022]
Abstract
Pseudomonas aeruginosa is able to utilize leucine/isovalerate and acyclic terpenes as sole carbon sources. Key enzymes which play an important role in these catabolic pathways are 3-hydroxy-3-methylglutaryl-coenzyme A (CoA) lyase (EC 4.1.3.4; HMG-CoA lyase) and the 3-hydroxy-3-isohexenylglutaryl-CoA lyase (EC 4.1.2.26; HIHG-CoA lyase), respectively. HMG-CoA lyase is encoded by the liuE gene while the gene for HIHG-CoA lyase remains unidentified. A mutant in the liuE gene was unable to utilize both leucine/isovalerate and acyclic terpenes indicates an involvement of liuE in both catabolic pathways (Chávez-Avilés et al. 2009, FEMS Microbiol Lett 296:117-123). The LiuE protein was purified as a His-tagged recombinant protein and in addition to show HMG-CoA lyase activity (Chávez-Avilés et al. 2009, FEMS Microbiol Lett 296:117-123), also displays HIHG-CoA lyase activity, indicating a bifunctional role in both the leucine/isovalerate and acyclic terpenes catabolic pathways.
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Affiliation(s)
- Mauricio Chávez-Avilés
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edif. B-3, Ciudad Universitaria, CP 58030, Morelia, Michoacán, Mexico
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Chávez-Avilés M, Díaz-Pérez AL, Reyes-de la Cruz H, Campos-García J. The Pseudomonas aeruginosa liuE gene encodes the 3-hydroxy-3-methylglutaryl coenzyme A lyase, involved in leucine and acyclic terpene catabolism. FEMS Microbiol Lett 2009; 296:117-23. [PMID: 19459965 DOI: 10.1111/j.1574-6968.2009.01624.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
Abstract
The enzymes involved in the catabolism of leucine are encoded by the liu gene cluster in Pseudomonas aeruginosa PAO1. A mutant in the liuE gene (ORF PA2011) of P. aeruginosa was unable to utilize both leucine/isovalerate and acyclic terpenes as the carbon source. The liuE mutant grown in culture medium with citronellol accumulated metabolites of the acyclic terpene pathway, suggesting an involvement of liuE in both leucine/isovalerate and acyclic terpene catabolic pathways. The LiuE protein was expressed as a His-tagged recombinant polypeptide purified by affinity chromatography in Escherichia coli. LiuE showed a mass of 33 kDa under denaturing and 79 kDa under nondenaturing conditions. Protein sequence alignment and fingerprint sequencing suggested that liuE encodes 3-hydroxy-3-methylglutaryl-coenzyme A lyase (HMG-CoA lyase), which catalyzes the cleavage of HMG-CoA to acetyl-CoA and acetoacetate. LiuE showed HMG-CoA lyase optimal activity at a pH of 7.0 and 37 degrees C, an apparent K(m) of 100 microM for HMG-CoA and a V(max) of 21 micromol min(-1) mg(-1). These results demonstrate that the liuE gene of P. aeruginosa encodes for the HMG-CoA lyase, an essential enzyme for growth in both leucine and acyclic terpenes.
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Affiliation(s)
- Mauricio Chávez-Avilés
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, Mexico
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Rivera SL, Vargas E, Ramírez-Díaz MI, Campos-García J, Cervantes C. Genes related to chromate resistance by Pseudomonas aeruginosa PAO1. Antonie van Leeuwenhoek 2008; 94:299-305. [DOI: 10.1007/s10482-008-9247-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2008] [Accepted: 04/17/2008] [Indexed: 10/22/2022]
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Díaz-Pérez C, Cervantes C, Campos-García J, Julián-Sánchez A, Riveros-Rosas H. Phylogenetic analysis of the chromate ion transporter (CHR) superfamily. FEBS J 2007; 274:6215-27. [DOI: 10.1111/j.1742-4658.2007.06141.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Ramírez-Díaz MI, Díaz-Pérez C, Vargas E, Riveros-Rosas H, Campos-García J, Cervantes C. Mechanisms of bacterial resistance to chromium compounds. Biometals 2007; 21:321-32. [PMID: 17934697 DOI: 10.1007/s10534-007-9121-8] [Citation(s) in RCA: 257] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2007] [Accepted: 09/25/2007] [Indexed: 11/27/2022]
Abstract
Chromium is a non-essential and well-known toxic metal for microorganisms and plants. The widespread industrial use of this heavy metal has caused it to be considered as a serious environmental pollutant. Chromium exists in nature as two main species, the trivalent form, Cr(III), which is relatively innocuous, and the hexavalent form, Cr(VI), considered a more toxic species. At the intracellular level, however, Cr(III) seems to be responsible for most toxic effects of chromium. Cr(VI) is usually present as the oxyanion chromate. Inhibition of sulfate membrane transport and oxidative damage to biomolecules are associated with the toxic effects of chromate in bacteria. Several bacterial mechanisms of resistance to chromate have been reported. The best characterized mechanisms comprise efflux of chromate ions from the cell cytoplasm and reduction of Cr(VI) to Cr(III). Chromate efflux by the ChrA transporter has been established in Pseudomonas aeruginosa and Cupriavidus metallidurans (formerly Alcaligenes eutrophus) and consists of an energy-dependent process driven by the membrane potential. The CHR protein family, which includes putative ChrA orthologs, currently contains about 135 sequences from all three domains of life. Chromate reduction is carried out by chromate reductases from diverse bacterial species generating Cr(III) that may be detoxified by other mechanisms. Most characterized enzymes belong to the widespread NAD(P)H-dependent flavoprotein family of reductases. Several examples of bacterial systems protecting from the oxidative stress caused by chromate have been described. Other mechanisms of bacterial resistance to chromate involve the expression of components of the machinery for repair of DNA damage, and systems related to the homeostasis of iron and sulfur.
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Affiliation(s)
- Martha I Ramírez-Díaz
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edificio B-3, Ciudad Universitaria, Morelia, Michoacan 58030, Mexico.
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Díaz-Pérez AL, Román-Doval C, Díaz-Pérez C, Cervantes C, Sosa-Aguirre CR, López-Meza JE, Campos-García J. Identification of the aceA gene encoding isocitrate lyase required for the growth of Pseudomonas aeruginosa on acetate, acyclic terpenes and leucine. FEMS Microbiol Lett 2007; 269:309-16. [PMID: 17319879 DOI: 10.1111/j.1574-6968.2007.00654.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Pseudomonas aeruginosa PAO1 mutants affected in acyclic monoterpenes, n-octanol, and acetate assimilation were isolated using transposon mutagenesis. The isocitrate lyase gene (aceA) corresponding to ORF PA2634 of the PAO1 strain genome was identified in one of these mutants. The aceA gene encodes a protein that is 72% identical to the isocitrate lyase (ICL) characterized from Colwellia maris, but is less than 30% identical to their homologues from pseudomonads. The genetic arrangement of aceA suggests that it is a monocistronic gene, and no adjacent related genes were found. The ICL protein was detected as a 60-kDa band in sodium dodecyl sulfate polyacrylamide gel electrophoresis from cultures grown on acetate, but not in glucose-grown PAO1 cultures. Genetic complementation further confirmed that the aceA gene encodes the ICL enzyme. The ICL enzyme activity in crude extracts from cultures of the PAO1 strain was induced by acetate, citronellol and leucine, and repressed by growth on glucose or citrate. These results suggest that ICL is involved in the assimilation of acetate, acyclic monoterpenes of the citronellol family, alkanols, and leucine, in which the final intermediary acetyl-coenzyme A may be channelled to the glyoxylate shunt.
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Affiliation(s)
- Alma Laura Díaz-Pérez
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, Mexico
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Abstract
The membrane topology of the plasmid-encoded Pseudomonas aeruginosa ChrA protein, which effluxes chromate ions, was determined by the analysis of translational fusions with reporter enzymes alkaline phosphatase and beta-galactosidase. A novel 13-TMS (transmembrane segments) topology, with the N-terminus located in the cytoplasm and the C-terminus in the periplasmic space, was consistent with the enzyme activities determined in both Escherichia coli and P. aeruginosa. Alignment of the two halves of ChrA showed significant sequence homology, with TMS I, II, III, IV, V and VI displaying similarity to TMS VIII, IX, X, XI, XII and XIII, respectively, although with opposite membrane orientations. This suggests that ChrA arose from the duplication of a gene encoding a 6-TMS ancestral protein, followed by the insertion of extra TMS VII. These data also suggest that the two halves of ChrA may carry out distinct functions for the transport of chromate.
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Affiliation(s)
- Rafael Jiménez-Mejía
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana, Morelia, Mich., México
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Aguilar JA, Zavala AN, Díaz-Pérez C, Cervantes C, Díaz-Pérez AL, Campos-García J. The atu and liu clusters are involved in the catabolic pathways for acyclic monoterpenes and leucine in Pseudomonas aeruginosa. Appl Environ Microbiol 2006; 72:2070-9. [PMID: 16517656 PMCID: PMC1393232 DOI: 10.1128/aem.72.3.2070-2079.2006] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Evidence suggests that the Pseudomonas aeruginosa PAO1 gnyRDBHAL cluster, which is involved in acyclic isoprenoid degradation (A. L. Díaz-Pérez, N. A. Zavala-Hernández, C. Cervantes, and J. Campos-García, Appl. Environ. Microbiol. 70:5102-5110, 2004), corresponds to the liuRABCDE cluster (B. Hoschle, V. Gnau, and D. Jendrossek, Microbiology 151:3649-3656, 2005). A liu (leucine and isovalerate utilization) homolog cluster was found in the PAO1 genome and is related to the catabolism of acyclic monoterpenes of the citronellol family (AMTC); it was named the atu cluster (acyclic terpene utilization), consisting of the atuCDEF genes and lacking the hydroxymethyl-glutaryl-coenzyme A (CoA) lyase (HMG-CoA lyase) homolog. Mutagenesis of the atu and liu clusters showed that both are involved in AMTC and leucine catabolism by encoding the enzymes related to the geranyl-CoA and the 3-methylcrotonyl-CoA pathways, respectively. Intermediary metabolites of the acyclic monoterpene pathway, citronellic and geranic acids, were accumulated, and leucine degradation rates were affected in both atuF and liuD mutants. The alpha subunit of geranyl-CoA carboxylase and the alpha subunit of 3-methylcrotonyl-CoA carboxylase (alpha-MCCase), encoded by the atuF and liuD genes, respectively, were both induced by citronellol, whereas only the alpha-MCCase subunit was induced by leucine. Both citronellol and leucine also induced a LacZ transcriptional fusion at the liuB gene. The liuE gene encodes a probable hydroxy-acyl-CoA lyase (probably HMG-CoA lyase), an enzyme with bifunctional activity that is essential for both AMTC and leucine degradation. P. aeruginosa PAO1 products encoded by the liuABCD cluster showed a higher sequence similarity (77.2 to 79.5%) with the probable products of liu clusters from several Pseudomonas species than with the atuCDEF cluster from PAO1 (41.5%). Phylogenetic studies suggest that the atu cluster from P. aeruginosa could be the result of horizontal transfer from Alphaproteobacteria. Our results suggest that the atu and liu clusters are bifunctional operons involved in both the AMTC and leucine catabolic pathways.
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Affiliation(s)
- J A Aguilar
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, Edif. B-3, Ciudad Universitaria, CP 58030, Morelia, Michoacán, Mexico
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Miranda AT, González MV, González G, Vargas E, Campos-García J, Cervantes C. Involvement of DNA helicases in chromate resistance by Pseudomonas aeruginosa PAO1. Mutat Res 2005; 578:202-9. [PMID: 16105671 DOI: 10.1016/j.mrfmmm.2005.05.018] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2005] [Revised: 05/01/2005] [Accepted: 05/22/2005] [Indexed: 05/04/2023]
Abstract
Chromate-hypersensitive mutants of the Pseudomonas aeruginosa PAO1 strain were isolated using transposon insertion mutagenesis. Comparison of the nucleotide sequences of the regions interrupted within the PAO1 genome showed that mutant strains GGP-64 and AJ-22 were affected in open reading frames PA0967 and PA5345, which correspond to the ruvB and recG genes, respectively. These genes encode helicases RuvB and RecG involved in DNA replication, recombination and repair. The chromate resistance phenotype in mutants GGP-64 and AJ-22 was restored by cosmids bearing wild type ruvB or recG genes, respectively. Also, both mutant strains showed an increased susceptibility to the toxic oxyanions tellurite and selenite as well as to mitomycin C, but not to arsenite, paraquat and hydrogen peroxide. It was concluded that P. aeruginosa RuvB and RecG helicases are involved in repairing DNA damage caused by chromate or its derivatives.
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Affiliation(s)
- Alma T Miranda
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana, Edificio B-3, Ciudad Universitaria, 58030 Morelia, Michoacan, México
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Díaz-Pérez AL, Zavala-Hernández AN, Cervantes C, Campos-García J. The gnyRDBHAL cluster is involved in acyclic isoprenoid degradation in Pseudomonas aeruginosa. Appl Environ Microbiol 2004; 70:5102-10. [PMID: 15345388 PMCID: PMC520886 DOI: 10.1128/aem.70.9.5102-5110.2004] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Pseudomonas aeruginosa PAO1 mutants affected in the ability to degrade acyclic isoprenoids were isolated with transposon mutagenesis. The gny cluster (for geranoyl), which encodes the enzymes involved in the lower pathway of acyclic isoprenoid degradation, was identified. The gny cluster is constituted by five probable structural genes, gnyDBHAL, and a possible regulatory gene, gnyR. Mutations in the gnyD, gnyB, gnyA, or gnyL gene caused inability to assimilate acyclic isoprenoids of the citronellol family of compounds. Transcriptional analysis showed that expression of the gnyB gene was induced by citronellol and repressed by glucose, whereas expression of the gnyR gene had the opposite behavior. Western blot analysis of citronellol-grown cultures showed induction of biotinylated proteins of 70 and 73 kDa, which probably correspond to 3-methylcrotonoyl-coenzyme A (CoA) carboxylase and geranoyl-CoA carboxylase (GCCase) alpha subunits, respectively. The 73-kDa biotinylated protein, identified as the alpha-GCCase subunit, is encoded by gnyA. Intermediary metabolites of the isoprenoid pathway, citronellic and geranic acids, were shown to accumulate in gnyB and gnyA mutants. Our data suggest that the protein products encoded in the gny cluster are the beta and alpha subunits of geranoyl-CoA carboxylase (GnyB and GnyA), the citronelloyl-CoA dehydrogenase (GnyD), the gamma-carboxygeranoyl-CoA hydratase (GnyH), and the 3-hydroxy-gamma-carboxygeranoyl-CoA lyase (GnyL). We conclude that the gnyRDBHAL cluster is involved in isoprenoid catabolism.
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Affiliation(s)
- A L Díaz-Pérez
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana, Edif. B-3, Ciudad Universitaria, CP 58030, Morelia, Michoacán, México
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Aguilera S, Aguilar ME, Chávez MP, López-Meza JE, Pedraza-Reyes M, Campos-García J, Cervantes C. Essential residues in the chromate transporter ChrA ofPseudomonas aeruginosa. FEMS Microbiol Lett 2004; 232:107-12. [PMID: 15019742 DOI: 10.1016/s0378-1097(04)00068-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2003] [Revised: 01/06/2004] [Accepted: 01/12/2004] [Indexed: 11/19/2022] Open
Abstract
The chrA gene of Pseudomonas aeruginosa plasmid pUM505 encodes the hydrophobic protein ChrA, which confers resistance to chromate by the energy-dependent efflux of chromate ions. Chromate-sensitive mutants were isolated by in vivo random mutagenesis. Transport experiments with cell suspensions of selected mutants showed that 51CrO4(2-) extrusion was drastically lowered as compared to suspensions of the strain with the wild-type plasmid, confirming that the mutations affected a chromate efflux system. DNA sequence analysis showed that most point mutations affected amino acids clustered in the N-terminal half of ChrA, altering either cytoplasmic regions or transmembrane segments, and replaced residues moderately to highly conserved in ChrA homologs. PhoA and LacZ translational fusions were used to confirm the membrane topology at the N-terminal half of the ChrA protein.
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Affiliation(s)
- Selene Aguilera
- Instituto de Investigaciones Químico-Biológicas, Universidad Michoacana, Edificio B-3, Ciudad Universitaria, 58030 Morelia, Mich., Mexico
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