1
|
Valle-Romero P, Castellanos EM, Luque CJ, Flores-Duarte NJ, Romano-Rodríguez E, Redondo-Gómez S, Rodríguez-Llorente ID, Pajuelo E, Mateos-Naranjo E. Nitrate modulates the physiological tolerance responses of the halophytic species Sarcocornia fruticosa to copper excess. Plant Physiol Biochem 2024; 210:108569. [PMID: 38552261 DOI: 10.1016/j.plaphy.2024.108569] [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: 01/11/2024] [Revised: 03/12/2024] [Accepted: 03/25/2024] [Indexed: 05/12/2024]
Abstract
Coexistence impact of pollutants of different nature on halophytes tolerance to metal excess has not been thoroughly examined, and plant functional responses described so far do not follow a clear pattern. Using the Cu-tolerant halophyte Sarcocornia fruticosa as a model species, we conducted a greenhouse experiment to evaluate the impact of two concentration of copper (0 and 12 mM CuSO4) in combination with three nitrate levels (2, 14 and 50 mM KNO3) on plant growth, photosynthetic apparatus performance and ROS-scavenging enzymes system. The results revealed that S. fruticosa was able to grow adequately even when exposed to high concentrations of copper and nitrate. This response was linked to the plant capacity to uptake and retain a large amount of copper in its roots (up to 1500 mg kg-1 Cu), preventing its transport to aerial parts. This control of translocation was further magnified with nitrate concentration increment. Likewise, although Cu excess impaired S. fruticosa carbon assimilation capacity, the plant was able to downregulate its light-harvesting complexes function, as indicated its lowers ETR values, especially at 12 mM Cu + 50 mM NO3. This downregulation would contribute to avoid excess energy absorption and transformation. In addition, this strategy of avoiding excess energy was accompanied by the upregulation of all ROS-scavenging enzymes, a response that was further enhanced by the increase in nitrate concentration. Therefore, we conclude that the coexistence of nitrate would favor S. fruticosa tolerance to copper excess, and this effect is mediated by the combined activation of several tolerance mechanisms.
Collapse
Affiliation(s)
- Pedro Valle-Romero
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080 Sevilla, Spain
| | - Eloy Manuel Castellanos
- Departamento de Ciencias Integradas, Facultad de Ciencias Experimentales, Universidad de Huelva, 21071 Huelva, Spain
| | - Carlos J Luque
- Departamento de Ciencias Integradas, Facultad de Ciencias Experimentales, Universidad de Huelva, 21071 Huelva, Spain
| | - Noris J Flores-Duarte
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, 1095, 41080 Sevilla, Spain
| | - Elena Romano-Rodríguez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080 Sevilla, Spain
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080 Sevilla, Spain
| | - Ignacio D Rodríguez-Llorente
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, 1095, 41080 Sevilla, Spain
| | - Eloísa Pajuelo
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, 1095, 41080 Sevilla, Spain
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080 Sevilla, Spain.
| |
Collapse
|
2
|
García-López JV, Redondo-Gómez S, Flores-Duarte NJ, Zunzunegui M, Rodríguez-Llorente ID, Pajuelo E, Mateos-Naranjo E. Exploring through the use of physiological and isotopic techniques the potential of a PGPR-based biofertilizer to improve nitrogen fertilization practices efficiency in strawberry cultivation. Front Plant Sci 2023; 14:1243509. [PMID: 37780506 PMCID: PMC10540466 DOI: 10.3389/fpls.2023.1243509] [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] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 08/28/2023] [Indexed: 10/03/2023]
Abstract
The use of microorganisms as a biofertilizer in strawberry has focused mainly on pathogen biocontrol, which has led to the underestimation of the potential of microorganisms for the improvement of nutritional efficiency in this crop. A study was established to investigate the impact of a plant growth-promoting rhizobacteria (PGPR) based biofertilizer integrated by self-compatible stress tolerant strains with multiple PGP properties, including atmospheric nitrogen fixation, on strawberry (Fragaria × ananassa cv. Rociera) tolerance to N deficiency in terms of growth and physiological performance. After 40 days of nitrogen fertilization shortage, inoculated plants were able to maintain root development and fertility structures (i.e. fruits and flowers) at a level similar to plants properly fertilized. In addition, inoculation lessened the negative impact of nitrogen deficiency on leaves' dry weight and relative water content. This effect was mediated by a higher root/shoot ratio, which would have allowed them to explore larger volumes of soil for the acquisition of water. Moreover, inoculation was able to buffer up to 50% of the reduction in carbon assimilation capacity, due to its positive effect on the diffusion efficiency of CO2 and the biochemical capacity of photosynthesis, as well as on the activity of photosystem II light harvesting. Furthermore, the higher leaf C/N ratio and the maintained δ15N values close to control plants were related to positive bacterial effects at the level of the plant nutritional balance. Despite these positive effects, the application of the bacterial inoculum was unable to completely counteract the restriction of fertilization, being necessary to apply a certain amount of synthetic fertilizer for the strawberry nutrition. However, according to our results, the complementary effect of this PGPR-based biofertilizer could provide a higher efficiency in environmental and economic yields on this crop.
Collapse
Affiliation(s)
- Jesús V. García-López
- Servicio General de Invernadero, Centro de Investigación, Tecnología e Innovación de la Universidad de Sevilla (CITIUS), Seville, Spain
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Seville, Spain
| | - Noris J. Flores-Duarte
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, Seville, Spain
| | - María Zunzunegui
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Seville, Spain
| | | | - Eloísa Pajuelo
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, Seville, Spain
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Seville, Spain
| |
Collapse
|
3
|
Pajuelo E, Flores-Duarte NJ, Navarro-Torre S, Rodríguez-Llorente ID, Mateos-Naranjo E, Redondo-Gómez S, Carrasco López JA. Culturomics and Circular Agronomy: Two Sides of the Same Coin for the Design of a Tailored Biofertilizer for the Semi-Halophyte Mesembryanthemum crystallinum. Plants (Basel) 2023; 12:2545. [PMID: 37447105 DOI: 10.3390/plants12132545] [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] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 06/27/2023] [Accepted: 06/28/2023] [Indexed: 07/15/2023]
Abstract
According to the EU, the global consumption of biomass, fossil fuels, metals, and minerals is expected to double by 2050, while waste will increase by 70%. In this context, the Circular Economy Action Plan (CEAP) intends to integrate development and sustainability. In this regard, tailored biofertilizers based on plant growth-promoting bacteria (PGPB) can improve plant yield with fewer inputs. In our project, an autochthonous halophyte of the Andalusian marshes, namely Mesembryanthemum crystallinum, was selected for its interest as a source of pharmaceuticals and nutraceuticals. The aim of this work was to use a culturomics approach for the isolation of specific PGPB and endophytes able to promote plant growth and, eventually, modulate the metabolome of the plant. For this purpose, a specific culture medium based on M. crystallinum biomass, called Mesem Agar (MA), was elaborated. Bacteria of three compartments (rhizosphere soil, root endophytes, and shoot endophytes) were isolated on standard tryptone soy agar (TSA) and MA in order to obtain two independent collections. A higher number of bacteria were isolated on TSA than in MA (47 vs. 37). All the bacteria were identified, and although some of them were isolated in both media (Pseudomonas, Bacillus, Priestia, Rosellomorea, etc.), either medium allowed the isolation of specific members of the M. crystallinum microbiome such as Leclercia, Curtobacterium, Pantoea, Lysinibacillus, Mesobacillus, Glutamicibacter, etc. Plant growth-promoting properties and extracellular degrading activities of all the strains were determined, and distinct patterns were found in both media. The three best bacteria of each collection were selected in order to produce two different consortia, whose effects on seed germination, root colonization, plant growth and physiology, and metabolomics were analyzed. Additionally, the results of the plant metabolome revealed a differential accumulation of several primary and secondary metabolites with pharmaceutical properties. Overall, the results demonstrated the feasibility of using "low cost media" based on plant biomass to carry out a culturomics approach in order to isolate the most suitable bacteria for biofertilizers. In this way, a circular model is established in which bacteria help plants to grow, and, in turn, a medium based on plant wastes supports bacterial growth at low prices, which is the reason why this approach can be considered within the model of "circular agronomy".
Collapse
Affiliation(s)
- Eloísa Pajuelo
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, c/Profesor García González, 2, 41012 Sevilla, Spain
| | - Noris J Flores-Duarte
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, c/Profesor García González, 2, 41012 Sevilla, Spain
| | - Salvadora Navarro-Torre
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, c/Profesor García González, 2, 41012 Sevilla, Spain
| | - Ignacio D Rodríguez-Llorente
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, c/Profesor García González, 2, 41012 Sevilla, Spain
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, c/Profesor García González, s/n., 41012 Sevilla, Spain
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, c/Profesor García González, s/n., 41012 Sevilla, Spain
| | - José A Carrasco López
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, c/Profesor García González, 2, 41012 Sevilla, Spain
| |
Collapse
|
4
|
Redondo-Gómez S, Mesa-Marín J, Pérez-Romero JA, Mariscal V, Molina-Heredia FP, Álvarez C, Pajuelo E, Rodríguez-Llorente ID, Mateos-Naranjo E. Plant Growth-Promoting Rhizobacteria Improve Rice Response to Climate Change Conditions. Plants (Basel) 2023; 12:2532. [PMID: 37447093 DOI: 10.3390/plants12132532] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 06/20/2023] [Accepted: 07/01/2023] [Indexed: 07/15/2023]
Abstract
Rice is one of the most important crops in the world and is considered a strategic crop for food security. Furthermore, the excessive use of chemical fertilizers to obtain high yields causes environmental problems. A sustainable alternative includes taking advantage of beneficial bacteria that promote plant growth. Here, we investigate the effect of five bacterial biofertilizers from halophytes on growth, and we investigate photosynthetic efficiency in rice plants grown under saline conditions (0 and 85 mmol L-1 NaCl) and future climate change scenarios, including increased CO2 concentrations and temperature (400/700 ppm and 25/+4 °C, respectively). Biofertilizers 1-4 increased growth by 9-64% in plants grown with and without salt in both CO2- temperature combinations, although there was no significant positive effect on the net photosynthetic rate of rice plants. In general, biofertilizer 1 was the most effective at 400 ppm CO2 and at 700 ppm CO2 +4 °C in the absence of salt. Inocula 1-5 also stimulated plant length at high CO2 levels without salt. Finally, the positive effect of biofertilization was attenuated in the plants grown under the interaction between salt and high CO2. This highlights the significance of studying biofertilization under stress interaction to establish the real potential of biofertilizers in the context of climate change conditions.
Collapse
Affiliation(s)
- Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 41012 Seville, Spain
| | - Jennifer Mesa-Marín
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 41012 Seville, Spain
| | - Jesús A Pérez-Romero
- Departamento de Biología, Instituto Universitario de Investigación Marina (INMAR), Universidad de Cádiz, 11510 Puerto Real, Spain
| | - Vicente Mariscal
- Instituto de Bioquímica Vegetal y Fotosíntesis, cicCartuja, Universidad de Sevilla and CSIC, 41092 Seville, Spain
| | - Fernando P Molina-Heredia
- Instituto de Bioquímica Vegetal y Fotosíntesis, cicCartuja, Universidad de Sevilla and CSIC, 41092 Seville, Spain
| | - Consolación Álvarez
- Instituto de Bioquímica Vegetal y Fotosíntesis, cicCartuja, Universidad de Sevilla and CSIC, 41092 Seville, Spain
| | - Eloísa Pajuelo
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, 41012 Seville, Spain
| | - Ignacio D Rodríguez-Llorente
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, 41012 Seville, Spain
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 41012 Seville, Spain
| |
Collapse
|
5
|
Flores-Duarte NJ, Navarro-Torre S, Mateos-Naranjo E, Redondo-Gómez S, Pajuelo E, Rodríguez-Llorente ID. Nodule Synthetic Bacterial Community as Legume Biofertilizer under Abiotic Stress in Estuarine Soils. Plants (Basel) 2023; 12:plants12112083. [PMID: 37299063 DOI: 10.3390/plants12112083] [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] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 05/17/2023] [Accepted: 05/22/2023] [Indexed: 06/12/2023]
Abstract
Estuaries are ecologically important ecosystems particularly affected by climate change and human activities. Our interest is focused on the use of legumes to fight against the degradation of estuarine soils and loss of fertility under adverse conditions. This work was aimed to determine the potential of a nodule synthetic bacterial community (SynCom), including two Ensifer sp. and two Pseudomonas sp. strains isolated from Medicago spp. nodules, to promote M. sativa growth and nodulation in degraded estuarine soils under several abiotic stresses, including high metal contamination, salinity, drought and high temperature. These plant growth promoting (PGP) endophytes were able to maintain and even increase their PGP properties in the presence of metals. Inoculation with the SynCom in pots containing soil enhanced plant growth parameters (from 3- to 12-fold increase in dry weight), nodulation (from 1.5- to 3-fold increase in nodules number), photosynthesis and nitrogen content (up to 4-fold under metal stress) under all the controlled conditions tested. The increase in plant antioxidant enzymatic activities seems to be a common and important mechanism of plant protection induced by the SynCom under abiotic stress conditions. The SynCom increased M. sativa metals accumulation in roots, with low levels of metals translocation to shoots. Results indicated that the SynCom used in this work is an appropriate ecological and safe tool to improve Medicago growth and adaptation to degraded estuarine soils under climate change conditions.
Collapse
Affiliation(s)
- Noris J Flores-Duarte
- Departamento de Microbiología y Parasitología, Universidad de Sevilla, 41012 Seville, Spain
| | | | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Universidad de Sevilla, 41012 Seville, Spain
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Universidad de Sevilla, 41012 Seville, Spain
| | - Eloísa Pajuelo
- Departamento de Microbiología y Parasitología, Universidad de Sevilla, 41012 Seville, Spain
| | | |
Collapse
|
6
|
Flores-Duarte NJ, Pajuelo E, Mateos-Naranjo E, Navarro-Torre S, Rodríguez-Llorente ID, Redondo-Gómez S, Carrasco López JA. A Culturomics-Based Bacterial Synthetic Community for Improving Resilience towards Arsenic and Heavy Metals in the Nutraceutical Plant Mesembryanthemum crystallinum. Int J Mol Sci 2023; 24:ijms24087003. [PMID: 37108166 PMCID: PMC10138511 DOI: 10.3390/ijms24087003] [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: 03/26/2023] [Revised: 04/07/2023] [Accepted: 04/08/2023] [Indexed: 04/29/2023] Open
Abstract
Plant-growth-promoting bacteria (PGPB) help plants thrive in polluted environments and increase crops yield using fewer inputs. Therefore, the design of tailored biofertilizers is of the utmost importance. The purpose of this work was to test two different bacterial synthetic communities (SynComs) from the microbiome of Mesembryanthemum crystallinum, a moderate halophyte with cosmetic, pharmaceutical, and nutraceutical applications. The SynComs were composed of specific metal-resistant plant-growth-promoting rhizobacteria and endophytes. In addition, the possibility of modulating the accumulation of nutraceutical substances by the synergetic effect of metal stress and inoculation with selected bacteria was tested. One of the SynComs was isolated on standard tryptone soy agar (TSA), whereas the other was isolated following a culturomics approach. For that, a culture medium based on M. crystallinum biomass, called Mesem Agar (MA), was elaborated. Bacteria of three compartments (rhizosphere soil, root endophytes, and shoot endophytes) were isolated on standard TSA and MA media, stablishing two independent collections. All bacteria were tested for PGP properties, secreted enzymatic activities, and resistance towards As, Cd, Cu, and Zn. The three best bacteria from each collection were selected in order to produce two different consortiums (denominated TSA- and MA-SynComs, respectively), whose effect on plant growth and physiology, metal accumulation, and metabolomics was evaluated. Both SynComs, particularly MA, improved plant growth and physiological parameters under stress by a mixture of As, Cd, Cu, and Zn. Regarding metal accumulation, the concentrations of all metals/metalloids in plant tissues were below the threshold for plant metal toxicity, indicating that this plant is able to thrive in polluted soils when assisted by metal/metalloid-resistant SynComs and could be safely used for pharmaceutical purposes. Initial metabolomics analyses depict changes in plant metabolome upon exposure to metal stress and inoculation, suggesting the possibility of modulating the concentration of high-value metabolites. In addition, the usefulness of both SynComs was tested in a crop plant, namely Medicago sativa (alfalfa). The results demonstrate the effectiveness of these biofertilizers in alfalfa, improving plant growth, physiology, and metal accumulation.
Collapse
Affiliation(s)
- Noris J Flores-Duarte
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, c/ Profesor García González, 2, 41012 Sevilla, Spain
| | - Eloísa Pajuelo
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, c/ Profesor García González, 2, 41012 Sevilla, Spain
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Avda. Reina Mercedes, s/n, 41012 Sevilla, Spain
| | - Salvadora Navarro-Torre
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, c/ Profesor García González, 2, 41012 Sevilla, Spain
| | - Ignacio D Rodríguez-Llorente
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, c/ Profesor García González, 2, 41012 Sevilla, Spain
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Avda. Reina Mercedes, s/n, 41012 Sevilla, Spain
| | - José A Carrasco López
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, c/ Profesor García González, 2, 41012 Sevilla, Spain
| |
Collapse
|
7
|
Carreiras J, Cruz-Silva A, Fonseca B, Carvalho RC, Cunha JP, Proença Pereira J, Paiva-Silva C, A. Santos S, Janeiro Sequeira R, Mateos-Naranjo E, Rodríguez-Llorente ID, Pajuelo E, Redondo-Gómez S, Matos AR, Mesa-Marín J, Figueiredo A, Duarte B. Improving Grapevine Heat Stress Resilience with Marine Plant Growth-Promoting Rhizobacteria Consortia. Microorganisms 2023; 11:microorganisms11040856. [PMID: 37110279 PMCID: PMC10141645 DOI: 10.3390/microorganisms11040856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/15/2023] [Accepted: 03/25/2023] [Indexed: 03/30/2023] Open
Abstract
Amid climate change, heatwave events are expected to increase in frequency and severity. As a result, yield losses in viticulture due to heatwave stress have increased over the years. As one of the most important crops in the world, an eco-friendly stress mitigation strategy is greatly needed. The present work aims to evaluate the physiological fitness improvement by two marine plant growth-promoting rhizobacteria consortia in Vitis vinifera cv. Antão Vaz under heatwave conditions. To assess the potential biophysical and biochemical thermal stress feedback amelioration, photochemical traits, pigment and fatty acid profiles, and osmotic and oxidative stress biomarkers were analysed. Bioaugmented grapevines exposed to heatwave stress presented a significantly enhanced photoprotection capability and higher thermo-stability, exhibiting a significantly lower dissipation energy flux than the non-inoculated plants. Additionally, one of the rhizobacterial consortia tested improved light-harvesting capabilities by increasing reaction centre availability and preserving photosynthetic efficiency. Rhizobacteria inoculation expressed an osmoprotectant promotion, revealed by the lower osmolyte concentration while maintaining leaf turgidity. Improved antioxidant mechanisms and membrane stability resulted in lowered lipid peroxidation product formation when compared to non-inoculated plants. Although the consortia were found to differ significantly in their effectiveness, these findings demonstrate that bioaugmentation induced significant heatwave stress tolerance and mitigation. This study revealed the promising usage of marine PGPR consortia to promote plant fitness and minimize heatwave impacts in grapevines.
Collapse
|
8
|
Barcia-Piedras JM, Pérez-Romero JA, Mateos-Naranjo E, Parra R, Rodríguez-Llorente ID, Camacho M, Redondo-Gómez S. Stimulation of PGP Bacteria on the Development of Seeds, Plants and Cuttings of the Obligate Halophyte Arthrocaulon (Arthrocnemum) macrostachyum (Moric.) Piirainen & G. Kadereit. Plants (Basel) 2023; 12:1436. [PMID: 37050061 PMCID: PMC10096739 DOI: 10.3390/plants12071436] [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] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/14/2023] [Accepted: 03/21/2023] [Indexed: 06/19/2023]
Abstract
The Earth is undergoing alterations at a high speed, which causes problems such as environmental pollution and difficulty in food production. This is where halophytes are interesting, due to their high potential in different fields, such as remediation of the environment and agriculture. For this reason, it is necessary to deepen the knowledge of the development of halophytes and how plant growth-promoting bacteria (PGP) can play a fundamental role in this process. Therefore, in this work were tested the effects of five PGP bacteria on its rhizosphere and other endophytic bacteria at different concentrations of NaCl on seed germination, plant growth (0 and 171 mM) and cutting growth (0 mM) of Arthrocaulon macrostachyum. The growth promotion in this strict halophyte is highlighted due to the presence of PGP bacteria and the fact that no salt is needed. Thus, without salt, the bacterial strains Kocuria polaris Hv16, Pseudarthrobacter psychrotolerans C58, and Rahnella aceris RTE9 enhanced the biomass production by more than 60% in both stems and roots. Furthermore, germination was encouraged by more than 30% in the presence of both R. aceris RTE9 and K. polaris Hv16 at 171 mM NaCl; the latter also had a biocontrol effect on the fungi that grew on the seeds. Additionally, for the first time in cuttings of this perennial species, the root biomass was improved thanks to the consortium of K. polaris Hv16 and P. psychrotolerans C58. Finally, this study demonstrates the potential of PGPs for optimising the development of halophytes, either for environmental or agronomic purposes.
Collapse
Affiliation(s)
- José-María Barcia-Piedras
- Centro Las Torres, Instituto de Investigación y Formación Agraria y Pesquera (IFAPA), Carretera, Sevilla-Cazalla de la Sierra Km 12.2, 41200 Alcalá del Río, Spain;
| | - Jesús-Alberto Pérez-Romero
- Departamento de Biología, Instituto Universitario de Investigación Marina (INMAR), Universidad de Cádiz, 11510 Puerto Real, Spain
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Avda. Reina Mercedes s/n, 41012 Sevilla, Spain
| | - Raquel Parra
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Avda. Reina Mercedes s/n, 41012 Sevilla, Spain
| | | | - María Camacho
- Centro Las Torres, Instituto de Investigación y Formación Agraria y Pesquera (IFAPA), Carretera, Sevilla-Cazalla de la Sierra Km 12.2, 41200 Alcalá del Río, Spain;
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Avda. Reina Mercedes s/n, 41012 Sevilla, Spain
| |
Collapse
|
9
|
Mesa-Marín J, Mateos-Naranjo E, Carreiras J, Feijão E, Duarte B, Matos AR, Betti M, Del Rio C, Romero-Bernal M, Montaner J, Redondo-Gómez S. Interactive Temperature and CO 2 Rise, Salinity, Drought, and Bacterial Inoculation Alter the Content of Fatty Acids, Total Phenols, and Oxalates in the Edible Halophyte Salicornia ramosissima. Plants (Basel) 2023; 12:1395. [PMID: 36987083 PMCID: PMC10058463 DOI: 10.3390/plants12061395] [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] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 03/08/2023] [Accepted: 03/18/2023] [Indexed: 06/19/2023]
Abstract
In this work, we studied the combined effect of increased temperature and atmospheric CO2, salt and drought stress, and inoculation with plant-growth-promoting rhizobacteria (PGPR) on the growth and some nutritional parameters of the edible halophyte Salicornia ramosissima. We found that the increase in temperature and atmospheric CO2, combined with salt and drought stresses, led to important changes in S. ramosissima fatty acids (FA), phenols, and oxalate contents, which are compounds of great importance for human health. Our results suggest that the S. ramosissima lipid profile will change in a future climate change scenario, and that levels of oxalate and phenolic compounds may change in response to salt and drought stress. The effect of inoculation with PGPR depended on the strains used. Some strains induced the accumulation of phenols in S. ramosissima leaves at higher temperature and CO2 while not altering FA profile but also led to an accumulation of oxalate under salt stress. In a climate change scenario, a combination of stressors (temperature, salinity, drought) and environmental conditions (atmospheric CO2, PGPR) will lead to important changes in the nutritional profiles of edible plants. These results may open new perspectives for the nutritional and economical valorization of S. ramosissima.
Collapse
Affiliation(s)
- Jennifer Mesa-Marín
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 41012 Seville, Spain
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 41012 Seville, Spain
| | - João Carreiras
- MARE—Marine and Environmental Sciences Centre, ARNET—Aquatic Research Infrastructure Network Associated Laboratory, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal
| | - Eduardo Feijão
- MARE—Marine and Environmental Sciences Centre, ARNET—Aquatic Research Infrastructure Network Associated Laboratory, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal
| | - Bernardo Duarte
- MARE—Marine and Environmental Sciences Centre, ARNET—Aquatic Research Infrastructure Network Associated Laboratory, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal
- Departamento de Biologia Vegetal, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal
| | - Ana Rita Matos
- Departamento de Biologia Vegetal, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal
- BioISI—Biosystems and Integrative Sciences Institute, Plant Functional Genomics Group, Departamento de Biologia Vegetal, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal
| | - Marco Betti
- Departamento de Bioquímica Vegetal y Biología Molecular, Facultad de Química, Universidad de Sevilla, 41012 Sevilla, Spain
| | - Carmen Del Rio
- Institute of Biomedicine of Seville (IBiS), Hospital Universitario Virgen del Rocío, CSIC, Universidad de Sevilla, 41013 Seville, Spain
| | - Marina Romero-Bernal
- Institute of Biomedicine of Seville (IBiS), Hospital Universitario Virgen del Rocío, CSIC, Universidad de Sevilla, 41013 Seville, Spain
| | - Joan Montaner
- Institute of Biomedicine of Seville (IBiS), Hospital Universitario Virgen del Rocío, CSIC, Universidad de Sevilla, 41013 Seville, Spain
- Department of Neurology, Hospital Universitario Virgen Macarena, 41009 Seville, Spain
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 41012 Seville, Spain
| |
Collapse
|
10
|
Camacho-Sanchez M, Camacho M, Redondo-Gómez S, Mateos-Naranjo E. Bacterial assemblage in Mediterranean salt marshes: Disentangling the relative importance of seasonality, zonation and halophytes. Sci Total Environ 2022; 846:157514. [PMID: 35878855 DOI: 10.1016/j.scitotenv.2022.157514] [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: 04/19/2022] [Revised: 07/12/2022] [Accepted: 07/16/2022] [Indexed: 06/15/2023]
Abstract
Salt marshes gather a high diversity of prokaryotes across their environmental gradients. Most of this diversity and the factors determining their community assemblage are unknown. We massively sequenced a portion of the 16S gene to characterize the diversity of prokaryotes in soils from a salt marsh in Río Piedras, Southern Spain. We sampled in the four seasons, and in five plots dominated by a different halophyte (Spartina maritima, S. densiflora, Salicornia ramosissima, Arthrocaulon macrostachyum and Atriplex portulacoides) growing under different environmental conditions and representing different stages in the marsh ecological succession. Soil was sampled in their rhizosphere and adjacent bulk soil. We report the effects of different factors explaining prokaryotic beta diversity in the marsh: zonation (50 %), seasonality (14 %), and halophyte rhizosphere (7 %). Proteobacteria and Bacteroidota were the most abundant phyla. Firmicutes had a peak in winter and Desulfobacterota with other bacteria involved in sulfur cycling were abundant in the low marsh plots from S. maritima. Alpha diversity was highest in spring and decreased in winter. We detected a marked phylogenetic turnover between seasons and in rhizospheric soil respect to adjacent bulk soil for most pairwise comparisons. The effect of halophyte on its rhizosphere was species-specific, being S. maritima the species with more differentiated taxa between rhizosphere versus surrounding bulk soil. Our work highlights how the complex interaction between marsh zonation, seasonality and rhizosphere, onsets processes structuring bacterial community assemblage in salt marsh soils.
Collapse
Affiliation(s)
- Miguel Camacho-Sanchez
- Instituto Andaluz de Investigación y Formación Agraria, Pesquera, Alimentaria y de la Producción Ecológica (IFAPA), Centro Las Torres, 41200 Alcalá del Río, Sevilla, Spain.
| | - María Camacho
- Instituto Andaluz de Investigación y Formación Agraria, Pesquera, Alimentaria y de la Producción Ecológica (IFAPA), Centro Las Torres, 41200 Alcalá del Río, Sevilla, Spain.
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 41012 Sevilla, Spain.
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 41012 Sevilla, Spain.
| |
Collapse
|
11
|
Flores-Duarte NJ, Caballero-Delgado S, Pajuelo E, Mateos-Naranjo E, Redondo-Gómez S, Navarro-Torre S, Rodríguez-Llorente ID. Enhanced legume growth and adaptation to degraded estuarine soils using Pseudomonas sp. nodule endophytes. Front Microbiol 2022; 13:1005458. [PMID: 36338056 PMCID: PMC9631207 DOI: 10.3389/fmicb.2022.1005458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 10/06/2022] [Indexed: 11/13/2022] Open
Abstract
The joint estuary of Tinto and Odiel rivers (SW Spain) is one of the most degraded and polluted areas in the world and its recovery is mandatory. Legumes and their associated bacteria are recommended sustainable tools to fight against soils degradation and loss of fertility due to their known positive impacts on soils. The aim of this work was to isolate and characterize plant growth promoting nodule endophytes (PGPNE) from inside nodules of Medicago spp. naturally growing in the estuary of the Tinto and Odiel Rivers and evaluate their ability to promote legume adaptation in degraded soils. The best rhizobia and non-rhizobia among 33 endophytes were selected based on their plant growth promoting properties and bacterial enzymatic activities. These strains, identified as Pseudomonas sp. N4, Pseudomonas sp. N8, Ensifer sp. N10 and Ensifer sp. N12, were used for in vitro studies using Medicago sativa plants. The effects of individual or combined inoculation on seed germination, plant growth and nodulation were studied, both on plates and pots containing nutrient-poor soils and moderately contaminated with metals/loids from the estuary. In general, inoculation with combinations of rhizobia and Pseudomonas increased plant biomass (up to 1.5-fold) and nodules number (up to 2-fold) compared to single inoculation with rhizobia, ameliorating the physiological state of the plants and helping to regulate plant stress mechanisms. The greatest benefits were observed in plants inoculated with the consortium containing the four strains. In addition, combined inoculation with Ensifer and Pseudomonas increased As and metals accumulation in plant roots, without significant differences in shoot metal accumulation. These results suggest that PGPNE are useful biotools to promote legume growth and phytostabilization potential in nutrient-poor and/or metals contaminated estuarine soils.
Collapse
Affiliation(s)
- Noris J. Flores-Duarte
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Sevilla, Sevilla, Spain
| | - Sara Caballero-Delgado
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Sevilla, Sevilla, Spain
| | - Eloisa Pajuelo
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Sevilla, Sevilla, Spain
| | - Enrique Mateos-Naranjo
- Department of Plant Biology and Ecology, Faculty of Biology, University of Sevilla, Sevilla, Spain
| | - Susana Redondo-Gómez
- Department of Plant Biology and Ecology, Faculty of Biology, University of Sevilla, Sevilla, Spain
| | - Salvadora Navarro-Torre
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Sevilla, Sevilla, Spain
| | - Ignacio D. Rodríguez-Llorente
- Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Sevilla, Sevilla, Spain
- *Correspondence: Ignacio D. Rodríguez-Llorente,
| |
Collapse
|
12
|
Flores-Duarte NJ, Pérez-Pérez J, Navarro-Torre S, Mateos-Naranjo E, Redondo-Gómez S, Pajuelo E, Rodríguez-Llorente ID. Improved Medicago sativa Nodulation under Stress Assisted by Variovorax sp. Endophytes. Plants (Basel) 2022; 11:plants11081091. [PMID: 35448819 PMCID: PMC9026315 DOI: 10.3390/plants11081091] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/13/2022] [Accepted: 04/15/2022] [Indexed: 06/12/2023]
Abstract
Legumes are the recommended crops to fight against soil degradation and loss of fertility because of their known positive impacts on soils. Our interest is focused on the identification of plant-growth-promoting endophytes inhabiting nodules able to enhance legume growth in poor and/or degraded soils. The ability of Variovorax paradoxus S110T and Variovorax gossypii JM-310T to promote alfalfa growth in nutrient-poor and metal-contaminated estuarine soils was studied. Both strains behaved as nodule endophytes and improved in vitro seed germination and plant growth, as well as nodulation in co-inoculation with Ensifer medicae MA11. Variovorax ameliorated the physiological status of the plant, increased nodulation, chlorophyll and nitrogen content, and the response to stress and metal accumulation in the roots of alfalfa growing in degraded soils with moderate to high levels of contamination. The presence of plant-growth-promoting traits in Variovorax, particularly ACC deaminase activity, could be under the observed in planta effects. Although the couple V. gossypii-MA11 reported a great benefit to plant growth and nodulation, the best result was observed in plants inoculated with the combination of the three bacteria. These results suggest that Variovorax strains could be used as biofertilizers to improve the adaptation of legumes to degraded soils in soil-recovery programs.
Collapse
Affiliation(s)
- Noris J. Flores-Duarte
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, Spain; (N.J.F.-D.); (J.P.-P.); (E.P.)
| | - Julia Pérez-Pérez
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, Spain; (N.J.F.-D.); (J.P.-P.); (E.P.)
| | - Salvadora Navarro-Torre
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, Spain; (N.J.F.-D.); (J.P.-P.); (E.P.)
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 41012 Sevilla, Spain; (E.M.-N.); (S.R.-G.)
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 41012 Sevilla, Spain; (E.M.-N.); (S.R.-G.)
| | - Eloísa Pajuelo
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, Spain; (N.J.F.-D.); (J.P.-P.); (E.P.)
| | - Ignacio D. Rodríguez-Llorente
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, 41012 Sevilla, Spain; (N.J.F.-D.); (J.P.-P.); (E.P.)
| |
Collapse
|
13
|
Pérez-Romero JA, Barcia-Piedras JM, Redondo-Gómez S, Caçador I, Duarte B, Mateos-Naranjo E. Salinity Modulates Juncus acutus L. Tolerance to Diesel Fuel Pollution. Plants (Basel) 2022; 11:plants11060758. [PMID: 35336640 PMCID: PMC8952689 DOI: 10.3390/plants11060758] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 03/10/2022] [Accepted: 03/10/2022] [Indexed: 05/27/2023]
Abstract
Soil contamination with petroleum-derived substances such as diesel fuel has become a major environmental threat. Phytoremediation is one of the most studied ecofriendly low-cost solutions nowadays and halophytes species has been proved to have potential as bio-tools for this purpose. The extent to which salinity influences diesel tolerance in halophytes requires investigation. A greenhouse experiment was designed to assess the effect of NaCl supply (0 and 85 mM NaCl) on the growth and photosynthetic physiology of Juncus acutus plants exposed to 0, 1 and 2.5% diesel fuel. Relative growth rate, water content and chlorophyll a derived parameters were measured in plants exposed to the different NaCl and diesel fuel combinations. Our results indicated that NaCl supplementation worsened the effects of diesel toxicity on growth, as diesel fuel at 2.5% reduced relative growth rate by 25% in the absence of NaCl but 80% in plants treated with NaCl. Nevertheless, this species grown at 0 mM NaCl showed a high tolerance to diesel fuel soil presence in RGR but also in chlorophyll fluorescence parameters that did not significantly decrease at 1% diesel fuel concentration in absence of NaCl. Therefore, this study remarked on the importance of knowing the tolerance threshold to abiotic factors in order to determine the bioremediation capacity of a species for a specific soil or area. In addition, it showed that NaCl presence even in halophytes does not always have a positive effect on plant physiology and it depends on the pollutant nature.
Collapse
Affiliation(s)
- Jesús Alberto Pérez-Romero
- Departamento de Biología, Instituto Universitario de Investigación Marina (INMAR), Universidad de Cádiz, 11510 Puerto Real, Spain
| | - José-María Barcia-Piedras
- Department of Ecological Production and Natural Resources Center IFAPA Las Torres, Tomejil Road Sevilla, Cazalla Km 12’2, 41200 Alcalá del Río, Spain;
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080 Sevilla, Spain; (S.R.-G.); (E.M.-N.)
| | - Isabel Caçador
- MARE—Marine and Environmental Sciences Centre, Faculty of Sciences, University of Lisbon Campo Grande, 1749-016 Lisbon, Portugal; (I.C.); (B.D.)
- Departamento de Biologia Vegetal, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal
| | - Bernardo Duarte
- MARE—Marine and Environmental Sciences Centre, Faculty of Sciences, University of Lisbon Campo Grande, 1749-016 Lisbon, Portugal; (I.C.); (B.D.)
- Departamento de Biologia Vegetal, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080 Sevilla, Spain; (S.R.-G.); (E.M.-N.)
| |
Collapse
|
14
|
Carreiras J, Pérez-Romero JA, Mateos-Naranjo E, Redondo-Gómez S, Matos AR, Caçador I, Duarte B. Heavy Metal Pre-Conditioning History Modulates Spartina patens Physiological Tolerance along a Salinity Gradient. Plants (Basel) 2021; 10:plants10102072. [PMID: 34685877 PMCID: PMC8539667 DOI: 10.3390/plants10102072] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 09/27/2021] [Accepted: 09/28/2021] [Indexed: 11/30/2022]
Abstract
Land salinization, resulting from the ongoing climate change phenomena, is having an increasing impact on coastal ecosystems like salt marshes. Although halophyte species can live and thrive in high salinities, they experience differences in their salt tolerance range, being this a determining factor in the plant distribution and frequency throughout marshes. Furthermore, intraspecific variation to NaCl response is observed in high-ranging halophyte species at a population level. The present study aims to determine if the environmental history, namely heavy metal pre-conditioning, can have a meaningful influence on salinity tolerance mechanisms of Spartina patens, a highly disperse grass invader in the Mediterranean marshes. For this purpose, individuals from pristine and heavy metal contaminated marsh populations were exposed to a high-ranging salinity gradient, and their intraspecific biophysical and biochemical feedbacks were analyzed. When comparing the tolerance mechanisms of both populations, S. patens from the contaminated marsh appeared to be more resilient and tolerant to salt stress, this was particularly present at the high salinities. Consequently, as the salinity increases in the environment, the heavy metal contaminated marsh may experience a more resilient and better adapted S. patens community. Therefore, the heavy metal pre-conditioning of salt mash populations appears to be able to create intraspecific physiological variations at the population level that can have a great influence on marsh plant distribution outcome.
Collapse
Affiliation(s)
- João Carreiras
- MARE—Marine and Environmental Sciences Centre, Faculty of Sciences of the University of Lisbon, Campo Grande, 1749-016 Lisbon, Portugal;
| | - Jesús Alberto Pérez-Romero
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Av. Reina Mercedes s/n, 41012 Sevilla, Spain; (J.A.P.-R.); (E.M.-N.); (S.R.-G.)
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Av. Reina Mercedes s/n, 41012 Sevilla, Spain; (J.A.P.-R.); (E.M.-N.); (S.R.-G.)
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Av. Reina Mercedes s/n, 41012 Sevilla, Spain; (J.A.P.-R.); (E.M.-N.); (S.R.-G.)
| | - Ana Rita Matos
- Plant Functional Genomics Group, BioISI—Biosystems and Integrative Sciences Institute, Departamento de Biologia Vegetal, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal;
- Departamento de Biologia Vegetal, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal;
| | - Isabel Caçador
- MARE—Marine and Environmental Sciences Centre, Faculty of Sciences of the University of Lisbon, Campo Grande, 1749-016 Lisbon, Portugal;
- Departamento de Biologia Vegetal, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal;
| | - Bernardo Duarte
- MARE—Marine and Environmental Sciences Centre, Faculty of Sciences of the University of Lisbon, Campo Grande, 1749-016 Lisbon, Portugal;
- Departamento de Biologia Vegetal, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016 Lisbon, Portugal;
- Correspondence:
| |
Collapse
|
15
|
Mesa-Marín J, Pérez-Romero JA, Redondo-Gómez S, Pajuelo E, Rodríguez-Llorente ID, Mateos-Naranjo E. Impact of Plant Growth Promoting Bacteria on Salicornia ramosissima Ecophysiology and Heavy Metal Phytoremediation Capacity in Estuarine Soils. Front Microbiol 2020; 11:553018. [PMID: 33042058 PMCID: PMC7527472 DOI: 10.3389/fmicb.2020.553018] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [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: 04/17/2020] [Accepted: 08/13/2020] [Indexed: 12/01/2022] Open
Abstract
Salicornia ramosissima is a C3 halophyte that grows naturally in South Western Spain salt marshes, under soil salinity and heavy metal pollution (mostly Cu, Zn, As, and Pb) caused by both natural and anthropogenic pressure. However, very few works have reported the phytoremediation potential of S. ramosissima. In this work, we studied a microbe-assisted phytoremediation strategy under greenhouse conditions. We inoculated plant growth promoting (PGP) and heavy metal resistant bacteria in pots with S. ramosissima and natural non-polluted and polluted sediments collected from Spanish estuaries. Then, we analyzed plant ecophysiological and metal phytoaccumulation response. Our data suggested that inoculation in polluted sediments improved S. ramosissima plant growth in terms of relative growth rate (RGR) (32%) and number of new branches (61%). S. ramosissima photosynthetic fitness was affected by heavy metal presence in soil, but bacteria inoculation improved the photochemical apparatus integrity and functionality, as reflected by increments in net photosynthetic rate (21%), functionality of PSII (Fm and Fv/Fm) and electron transport rate, according to OJIP derived parameters. Beneficial effect of bacteria in polluted sediments was also observed by augmentation of intrinsic water use efficiency (28%) and slightly water content (2%) in inoculated S. ramosissima. Finally, our results demonstrated that S. ramosissima was able to accumulate great concentrations of heavy metals, mostly at root level, up to 200 mg Kg–1 arsenic, 0.50 mg Kg–1 cadmium, 400 mg Kg–1 copper, 25 mg Kg–1 nickel, 300 mg Kg–1 lead, and 300 mg Kg–1 zinc. Bioaugmentation incremented S. ramosissima heavy metal phytoremediation potential due to plant biomass increment, which enabled a greater accumulation capacity. Thus, our results suggest the potential use of heavy metal resistant PGPB to ameliorate the capacity of S. ramosissima as candidate for phytoremediation of salty polluted ecosystems.
Collapse
Affiliation(s)
- Jennifer Mesa-Marín
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, Málaga, Spain
| | - Jesús A Pérez-Romero
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Seville, Spain
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Seville, Spain
| | - Eloísa Pajuelo
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, Seville, Spain
| | | | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Seville, Spain
| |
Collapse
|
16
|
Mateos-Naranjo E, López-Jurado J, Redondo-Gómez S, Pérez-Romero JA, Glick BR, Rodríguez-Llorente ID, Pajuelo E, Echegoyan A, Mesa-Marín J. Uncovering PGPB Vibrio spartinae inoculation-triggered physiological mechanisms involved in the tolerance of Halimione portulacoides to NaCl excess. Plant Physiol Biochem 2020; 154:151-159. [PMID: 32559519 DOI: 10.1016/j.plaphy.2020.05.034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [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: 04/03/2020] [Revised: 05/26/2020] [Accepted: 05/27/2020] [Indexed: 06/11/2023]
Abstract
Plant growth promoting bacteria' (PGPB) beneficial role on plant tolerance to salinity stress has previously been well recognized. However, bacteria-triggered plant physiological mechanisms involved in this response require investigation, especially in plants with innate salt tolerance. A glasshouse experiment was designed to investigate the effect of the PGPB Vibrio spartinae on Halimione portulacoides growth, physiological performance and ion homeostasis in plants exposed to 0, 171, 510 and 1020 mM NaCl for 100 days. Bacterial inoculation alleviated ~28% of the deleterious impact of salinity excess on the relative growth rate (RGR) in plants grown at 510 mM and led to 30% and 44% enhancements in those exposed to 0 and 171 mM NaCl, respectively. This effect was linked to a reduction in Na tissue concentrations which improved plant ion homeostasis at elevated NaCl concentration, and to the overall protective effects on various steps in the photosynthetic pathway between 0 and 510 mM NaCl. Thus, inoculated plants were able to maintain higher net photosynthesis (AN) than their non-inoculated counterparts. Hence, AN differences under saline conditions were ascribed to inoculation amelioration NaCl-induced CO2 diffusion limitations, as reflected in the greater gs and Ci values recorded at 171 and 510 mM NaCl, together with an enhancement of photochemical apparatus functionality (in terms of energy absorption, transformation and transport), as indicated by a higher electron transport rate (ETR) and energy fluxes derived from Kautsky curves, compared with their non-inoculated counterparts.
Collapse
Affiliation(s)
- Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080, Sevilla, Spain.
| | - Javier López-Jurado
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080, Sevilla, Spain
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080, Sevilla, Spain
| | - Jesús Alberto Pérez-Romero
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080, Sevilla, Spain
| | - Bernard R Glick
- Department of Biology, University of Waterloo, Waterloo, ON, N2L 3G1, Canada
| | - Ignacio David Rodríguez-Llorente
- Departamento de Microbiologia, Facultad de Farmacia, Universidad de Sevilla, C/ Professor García González 2, 41012, Sevilla, Spain
| | - Eloísa Pajuelo
- Departamento de Microbiologia, Facultad de Farmacia, Universidad de Sevilla, C/ Professor García González 2, 41012, Sevilla, Spain
| | - Almudena Echegoyan
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080, Sevilla, Spain
| | - Jennifer Mesa-Marín
- Departamento de Biología Molecular y Bioquímica, Facultad de Ciencias, Universidad de Málaga, Campus de Teatinos, 29010, Málaga, Spain
| |
Collapse
|
17
|
Pérez-Romero JA, Mateos-Naranjo E, López-Jurado J, Redondo-Gómez S, Torres-Ruiz JM. Importance of Physiological Traits Vulnerability in Determine Halophytes Tolerance to Salinity Excess: A Comparative Assessment in Atriplex halimus. Plants (Basel) 2020; 9:E690. [PMID: 32481734 PMCID: PMC7356256 DOI: 10.3390/plants9060690] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 05/25/2020] [Accepted: 05/26/2020] [Indexed: 05/05/2023]
Abstract
Many halophytic physiological traits related to the tolerance of plants to salinity excess have been extensively studied, with a focus on biomass and/or gas exchange parameters. To gain a more complete understanding of whether salinity excess affects the physiological performance of halophytes, an experiment was performed using the halophyte Atriplex halimus L. as a model. A. halimus plants were subjected to two salinity treatments (171 and 513 mM NaCl) over 60 days in a controlled environment. After this period, dry biomass, specific stem conductivity, water potential at turgor loss point, osmotic potential, gas exchange parameters, and the fluorescence of chlorophyll a derived parameters were assessed in order to obtain knowledge about the differences in vulnerability that these parameters can show when subjected to salinity stress. Our results showed a decrease in belowground and aboveground biomass. The decrement in biomass seen at 513 mM NaCl was related to photosynthetic limitations and specific stem conductivity. Turgor loss point did not vary significantly with the increment of salinity. Therefore, the parameter that showed less vulnerability to saline stress was the turgor loss point, with only a 5% decrease, and the more vulnerable trait was the stem conductivity, with a reduction of nearly 50%.
Collapse
Affiliation(s)
- Jesús Alberto Pérez-Romero
- Dpto. de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Av Reina Mercedes s/n, 41012 Sevilla, Spain; (E.M.-N.); (J.L.-J.); (S.R.-G.)
| | - Enrique Mateos-Naranjo
- Dpto. de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Av Reina Mercedes s/n, 41012 Sevilla, Spain; (E.M.-N.); (J.L.-J.); (S.R.-G.)
| | - Javier López-Jurado
- Dpto. de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Av Reina Mercedes s/n, 41012 Sevilla, Spain; (E.M.-N.); (J.L.-J.); (S.R.-G.)
| | - Susana Redondo-Gómez
- Dpto. de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Av Reina Mercedes s/n, 41012 Sevilla, Spain; (E.M.-N.); (J.L.-J.); (S.R.-G.)
| | | |
Collapse
|
18
|
Pérez-Romero JA, Barcia-Piedras JM, Redondo-Gómez S, Mateos-Naranjo E. Sarcocornia fruticosa photosynthetic response to short-term extreme temperature events in combination with optimal and sub-optimal salinity concentrations. Plant Physiol Biochem 2020; 148:45-52. [PMID: 31931392 DOI: 10.1016/j.plaphy.2019.12.026] [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: 10/01/2019] [Revised: 12/20/2019] [Accepted: 12/20/2019] [Indexed: 06/10/2023]
Abstract
Climate change would increase frequency and intensity of extreme events as heat and cold waves. There is a lack of studies that consider the co-occurrence of these waves with other abiotic factors relevant on a climate change scenario as salinity. Therefore, it could be interesting to improve our knowledge about the effects that this co-occurrence could have in different species due to the species specific effect of the photosynthesis tolerance to extreme temperatures. A controlled condition experiment was performed using the salt marsh species Sarcocornia perrnis with eight experimental blocks combining temperature ranges (40-28/22-15/13-5 °C) and salinity concentration on the growth solution (171/1050 mM NaCl). After 3 days of treatment, gas exchange, chlorophyll a fluorescence, pigment profile and water state measurement were applied. Photosynthetic machinery function of this perennial species decreased on for both high and low temperature range. Nevertheless, at 13-5 °C the effect of the salinity was mainly due to diffusion limitations more than to damage on the photosystems. At 40-28 °C, in presence of optimal salinity S. fruticosa was not altered overall. However, high temperatures in combination with high salinity reduced the photosynthetic capacity mainly by reducing the efficiency of the electron transport chain.
Collapse
Affiliation(s)
- Jesús Alberto Pérez-Romero
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080, Sevilla, Spain.
| | - Jose María Barcia-Piedras
- Department of Ecological Production and Natural Resources Center IFAPA Las Torres-Tomejil Road Sevilla - Cazalla Km 12'2, 41200, Alcalá Del Río, Seville, Spain
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080, Sevilla, Spain
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080, Sevilla, Spain
| |
Collapse
|
19
|
Mesa-Marín J, Barcia-Piedras JM, Mateos-Naranjo E, Cox L, Real M, Pérez-Romero JA, Navarro-Torre S, Rodríguez-Llorente ID, Pajuelo E, Parra R, Redondo-Gómez S. Soil phenanthrene phytoremediation capacity in bacteria-assisted Spartina densiflora. Ecotoxicol Environ Saf 2019; 182:109382. [PMID: 31255867 DOI: 10.1016/j.ecoenv.2019.109382] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 03/08/2019] [Revised: 06/21/2019] [Accepted: 06/24/2019] [Indexed: 06/09/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAH) have become a threat for the conservation of wetlands worldwide. The halophyte Spartina densiflora has shown to be potentially useful for soil phenanthrene phytoremediation, but no studies on bacteria-assisted hydrocarbon phytoremediation have been carried out with this halophyte. In this work, three phenanthrene-degrading endophytic bacteria were isolated from S. densiflora tissues and used for plant inoculation. Bacterial bioaugmentation treatments slightly improved S. densiflora growth, photosynthetic and fluorescence parameters. But endophyte-inoculated S. densiflora showed lower soil phenanthrene dissipation rates than non-inoculated S. densiflora (30% below) or even bulk soil (23% less). Our work demonstrates that endophytic inoculation on S. densiflora under greenhouse conditions with the selected PAH-degrading strains did not significantly increase inherent phenanthrene soil dissipation capacity of the halophyte. It would therefore be advisable to provide effective follow-up of bacterial colonization, survival and metabolic activity during phenanthrene soil phytoremediation.
Collapse
Affiliation(s)
- Jennifer Mesa-Marín
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Apartado 1095, 41080, Sevilla, Spain.
| | - José M Barcia-Piedras
- Centro IFAPA Las Torres-Tomejil, Ctra. Sevilla, Cazalla Km. 12,2, 41200, Alcalá Del Río, Sevilla, Spain
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Apartado 1095, 41080, Sevilla, Spain
| | - Lucía Cox
- Instituto de Recursos Naturales y Agrobiología (CSIC), Reina Mercedes 10, 41012, Sevilla, Spain
| | - Miguel Real
- Instituto de Recursos Naturales y Agrobiología (CSIC), Reina Mercedes 10, 41012, Sevilla, Spain
| | - Jesús A Pérez-Romero
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Apartado 1095, 41080, Sevilla, Spain
| | - Salvadora Navarro-Torre
- Departamento de Microbiologia, Facultad de Farmacia, Universidad de Sevilla, C/ Profesor García González 2, 41012, Sevilla, Spain
| | - Ignacio D Rodríguez-Llorente
- Departamento de Microbiologia, Facultad de Farmacia, Universidad de Sevilla, C/ Profesor García González 2, 41012, Sevilla, Spain
| | - Eloisa Pajuelo
- Departamento de Microbiologia, Facultad de Farmacia, Universidad de Sevilla, C/ Profesor García González 2, 41012, Sevilla, Spain
| | - Raquel Parra
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Apartado 1095, 41080, Sevilla, Spain
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Apartado 1095, 41080, Sevilla, Spain
| |
Collapse
|
20
|
Bortolus A, Adam P, Adams JB, Ainouche ML, Ayres D, Bertness MD, Bouma TJ, Bruno JF, Caçador I, Carlton JT, Castillo JM, Costa CSB, Davy AJ, Deegan L, Duarte B, Figueroa E, Gerwein J, Gray AJ, Grosholz ED, Hacker SD, Hughes AR, Mateos-Naranjo E, Mendelssohn IA, Morris JT, Muñoz-Rodríguez AF, Nieva FJJ, Levin LA, Li B, Liu W, Pennings SC, Pickart A, Redondo-Gómez S, Richardson DM, Salmon A, Schwindt E, Silliman BR, Sotka EE, Stace C, Sytsma M, Temmerman S, Turner RE, Valiela I, Weinstein MP, Weis JS. Supporting Spartina: Interdisciplinary perspective shows Spartina as a distinct solid genus. Ecology 2019; 100:e02863. [PMID: 31398280 DOI: 10.1002/ecy.2863] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Revised: 08/01/2019] [Accepted: 08/05/2019] [Indexed: 11/11/2022]
Abstract
In 2014, a DNA-based phylogenetic study confirming the paraphyly of the grass subtribe Sporobolinae proposed the creation of a large monophyletic genus Sporobolus, including (among others) species previously included in the genera Spartina, Calamovilfa, and Sporobolus. Spartina species have contributed substantially (and continue contributing) to our knowledge in multiple disciplines, including ecology, evolutionary biology, molecular biology, biogeography, experimental ecology, biological invasions, environmental management, restoration ecology, history, economics, and sociology. There is no rationale so compelling to subsume the name Spartina as a subgenus that could rival the striking, global iconic history and use of the name Spartina for over 200 yr. We do not agree with the subjective arguments underlying the proposal to change Spartina to Sporobolus. We understand the importance of both the objective phylogenetic insights and of the subjective formalized nomenclature and hope that by opening this debate we will encourage positive feedback that will strengthen taxonomic decisions with an interdisciplinary perspective. We consider that the strongly distinct, monophyletic clade Spartina should simply and efficiently be treated as the genus Spartina.
Collapse
Affiliation(s)
- Alejandro Bortolus
- Grupo de Ecología en Ambientes Costeros (GEAC), Instituto Patagónico para el Estudio de los Ecosistemas Continentales (IPEEC), CONICET, Boulevard Brown 2915, Puerto Madryn (U9120ACD), Chubut, Argentina
| | - Paul Adam
- School of Biological, Earth and Environmental Science, University of New South Wales, Sydney, New South Wales, 2052, Australia
| | - Janine B Adams
- Department of Botany, Nelson Mandela University, Port Elizabeth, 6031, South Africa
| | - Malika L Ainouche
- UMR CNRS 6553 Ecosystems, Biodiversity Evolution (ECOBIO), University of Rennes 1, Campus de Beaulieu, 35 042, Rennes Cedex, France
| | - Debra Ayres
- Evolution and Ecology, University of California, Davis, California, 95616, USA
| | - Mark D Bertness
- Department of Ecology and Evolutionary Biology, Brown University, 02901, Providence, Rhode Island, USA
| | - Tjeerd J Bouma
- Department of Estuarine and Delta Systems, Royal Netherlands Institute for Sea Research (NIOZ), Utrecht University, P.O. Box 140, 4400 AC, Yerseke, The Netherlands.,Faculty of Geosciences, Department of Physical Geography, Utrecht University, 3584 CS, Utrecht, The Netherlands
| | - John F Bruno
- Department of Biology, University of North Carolina, Chapel Hill, North Carolina, 27599-3280, USA
| | - Isabel Caçador
- MARE - Marine and Environmental Sciences Centre, Faculty of Sciences of the University of Lisbon, Campo Grande, 1749-016, Lisbon, Portugal
| | - James T Carlton
- Maritime Studies Program, Williams College, Mystic Seaport, Mystic, Connecticut, 96355, USA
| | - Jesus M Castillo
- Departamento de Biología Vegetal y Ecología, Universidad de Sevilla, 41080, Sevilla, Spain
| | - Cesar S B Costa
- Universidade Federal do Rio Grande-FURG, Campus Carreiros, Rio Grande, RS, 96203-900, Brazil
| | - Anthony J Davy
- School of Biological Sciences, University of East Anglia, Norwich, NR4 7TJ, United Kingdom
| | - Linda Deegan
- Woods Hole Research Center, 129 Woods Hole Road, Falmouth, Massachusetts, 02543, USA
| | - Bernardo Duarte
- MARE - Marine and Environmental Sciences Centre, Faculty of Sciences of the University of Lisbon, Campo Grande, 1749-016, Lisbon, Portugal
| | - Enrique Figueroa
- Departamento de Biología Vegetal y Ecología, Universidad de Sevilla, 41080, Sevilla, Spain
| | - Joel Gerwein
- California State Coastal Conservancy, Oakland, California, 94612-1401, USA
| | - Alan J Gray
- Centre for Ecology and Hydrology, Edinburgh Research Station, Penicuik, Midlothian, EH26 0QB, United Kingdom
| | - Edwin D Grosholz
- Department of Environmental Science and Policy, University of California, Davis, California, 95616, USA
| | - Sally D Hacker
- Department of Integrative Biology, Oregon State University, 3029 Cordley Hall, Corvallis, Oregon, 97331, USA
| | - A Randall Hughes
- Department of Marine and Environmental Science, Northeastern University, Nahant, Massachusetts, 01908, USA
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Universidad de Sevilla, 41080, Sevilla, Spain
| | - Irving A Mendelssohn
- Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, Louisiana, 70803, USA
| | - James T Morris
- Belle Baruch Institute for Marine and Coastal Sciences, University of South Carolina, Columbia, South Carolina, 29208, USA
| | | | - Francisco J J Nieva
- Integrative Oceanography Division and Center for Marine Biodiversity and Conservation, Scripps Institution of Oceanography, La Jolla, California, 92093, USA
| | - Lisa A Levin
- Integrative Oceanography Division and Center for Marine Biodiversity and Conservation, Scripps Institution of Oceanography, La Jolla, California, 92093, USA
| | - Bo Li
- Ministry of Education Key Laboratory for Biodiversity Science and Ecological Engineering, Coastal Ecosystems Research Station of the Yangtze River Estuary, Institute of Biodiversity Science and Institute of Eco-Chongming, School of Life Sciences, Fudan University, Shanghai, 200438, China
| | - Wenwen Liu
- Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Fujian, 361102, China
| | - Steven C Pennings
- Department of Biology and Biochemistry, University of Houston, Houston, Texas, 77204, USA
| | - Andrea Pickart
- U.S. Fish and Wildlife Service, Humboldt Bay National Wildlife Refuge, 6800 Lanphere Road, Arcata, California, 95521, USA
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Universidad de Sevilla, 41080, Sevilla, Spain
| | - David M Richardson
- Centre for Invasion Biology, Department of Botany and Zoology, Stellenbosch University, Matieland, 7602, South Africa
| | - Armel Salmon
- UMR CNRS 6553 Ecosystems, Biodiversity Evolution (ECOBIO), University of Rennes 1, Campus de Beaulieu, 35 042, Rennes Cedex, France
| | - Evangelina Schwindt
- Instituto de Biología de Organismos Marinos (IBIOMAR-CONICET), U9120 ACD, Puerto Madryn, Argentina
| | - Brian R Silliman
- Division of Marine Science and Conservation, Nicholas School of the Environment, Duke University, Beaufort, North Carolina, 28516, USA
| | - Erik E Sotka
- Grice Marine Laboratory and the Department of Biology, College of Charleston, Charleston, South Carolina, 29412, USA
| | - Clive Stace
- Apletree House, Larters Lane, Middlewood Green, Sufolk, IP14 5HB, United Kingdom
| | - Mark Sytsma
- Portland State University, Portland, Oregon, 97207, USA
| | - Stijn Temmerman
- Ecosystem Management Research Group, University of Antwerp, Antwerp, BE-2610, Belgium
| | - R Eugene Turner
- Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, Louisiana, 70803, USA
| | - Ivan Valiela
- The Ecosystems Center, Marine Biological Laboratory, Woods Hole, Massachusetts, 02543, USA
| | | | - Judith S Weis
- Department of Biological Sciences, Rutgers University, Newark, New Jersey, 07102, USA
| |
Collapse
|
21
|
Pérez-Romero JA, Duarte B, Barcia-Piedras JM, Matos AR, Redondo-Gómez S, Caçador I, Mateos-Naranjo E. Investigating the physiological mechanisms underlying Salicornia ramosissima response to atmospheric CO 2 enrichment under coexistence of prolonged soil flooding and saline excess. Plant Physiol Biochem 2019; 135:149-159. [PMID: 30551074 DOI: 10.1016/j.plaphy.2018.12.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [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: 08/14/2018] [Revised: 11/13/2018] [Accepted: 12/03/2018] [Indexed: 05/22/2023]
Abstract
A 45-days long climatic chamber experiment was design to evaluate the effect of 400 and 700 ppm atmospheric CO2 treatments with and without soil water logging in combination with 171 and 510 mM NaCl in the halophyte Salicornia ramosissima. In order to ascertain the possible synergetic impact of these factors associate to climatic change in this plant species physiological and growth responses. Our results indicated that elevated atmospheric CO2 concentration improved plant physiological performance under suboptimal root-flooding and saline conditions plants. Thus, this positive impact was mainly ascribed to an enhancement of energy transport efficiency, as indicated the greater PG, N and Sm values, and the maintaining of carbon assimilation capacity due to the higher net photosynthetic rate (AN) and water use efficiency (iWUE). This could contribute to reduce the risk of oxidative stress owing to the accumulation of reactive oxygen species (ROS). Moreover, plants grown at 700 ppm had a greater capacity to cope with flooding and salinity synergistic impact by a greater efficiency in the modulation in enzyme antioxidant machinery and by the accumulation of osmoprotective compounds and saturated fatty acids in its tissues. These responses indicate that atmospheric CO2 enrichment would contribute to preserve the development of Salicornia ramosissima against the ongoing process of increment of soil stressful conditions linked with climatic change.
Collapse
Affiliation(s)
- Jesús Alberto Pérez-Romero
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080, Sevilla, Spain.
| | - Bernardo Duarte
- MARE - Marine and Environmental Sciences Centre, Faculty of Sciences of the University of Lisbon, Campo Grande, 1749-016, Lisbon, Portugal
| | - Jose-Maria Barcia-Piedras
- Department of Ecological Production and Natural Resources Center IFAPA Las Torres-Tomejil Road Sevilla - Cazalla Km 12'2, 41200, Alcalá del Río, Seville, Spain
| | - Ana Rita Matos
- BioISI-Biosystems and Integrative Sciences Institute, Plant Functional Genomics Group, Departamento de Biologia Vegetal, Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080, Sevilla, Spain
| | - Isabel Caçador
- Department of Ecological Production and Natural Resources Center IFAPA Las Torres-Tomejil Road Sevilla - Cazalla Km 12'2, 41200, Alcalá del Río, Seville, Spain
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080, Sevilla, Spain
| |
Collapse
|
22
|
Pérez-Romero JA, Barcia-Piedras JM, Redondo-Gómez S, Mateos-Naranjo E. Impact of short-term extreme temperature events on physiological performance of Salicornia ramosissima J. Woods under optimal and sub-optimal saline conditions. Sci Rep 2019; 9:659. [PMID: 30679731 PMCID: PMC6345903 DOI: 10.1038/s41598-018-37346-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 11/30/2018] [Indexed: 11/23/2022] Open
Abstract
Increasing extreme temperature climatic events could exert an important effect on plant photosynthetic performance, which could be modulated by the co-occurrence with other environmental factors, such as salinity, in estuarine ecosystems. Therefore, a mesocosm experiment was designed to assess the impact of temperature events for three days (13/5 °C, 25/13 °C and 40/28 °C) in combination with two NaCl concentrations (171 and 1050 mM NaCl) on the physiological performance of Salicornia ramosissima. Extreme temperature events had a negative impact on S. ramosissima photosynthetic efficiency, this effect being more marked with cold wave at both salinities, compared with heat wave, even in presence of NaCl excess. This differential thermotolerance in the photosynthetic apparatus was ascribed to the greater integrity and functioning of its photosynthetic pathway at high temperature, as indicated by constant gs, Vc,max values at optimal salinity and the higher values of those parameters and gm recorded in combination with NaCl excess. Moreover, S. ramosissima was able to upregulate the energy sink capacity of its photochemical apparatus at elevated temperature and salinity by a greater energy excess dissipation capacity. This could have contributed to reducing the risk of oxidative stress, along with the recorded higher capacity for antioxidant enzyme activity modulation under these conditions.
Collapse
Affiliation(s)
- Jesús Alberto Pérez-Romero
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080, Sevilla, Spain.
| | - Jose-Maria Barcia-Piedras
- Department of Ecological Production and Natural Resources Center IFAPA Las Torres-Tomejil Road Sevilla - Cazalla Km 12'2, 41200 - Alcalá del Río, Seville, Spain
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080, Sevilla, Spain
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080, Sevilla, Spain
| |
Collapse
|
23
|
Mateos-Naranjo E, Pérez-Romero JA, Mesa-Marín J, López-Jurado J, Redondo-Gómez S. Inter-population differences tolerance to Cu excess during the initials phases of Juncus acutus life cycle: implications for the design of metal restoration strategies. Int J Phytoremediation 2019; 21:550-555. [PMID: 30648414 DOI: 10.1080/15226514.2018.1537242] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 06/09/2023]
Abstract
The research on the plant population metal intra-specific tolerance variability is of paramount importance for the design of phytoremediation restoration. The aim of this study was to asses if any variability exists in the copper stress response during seed germination and seedling development in Juncus acutus depending on provenance habitat. Our results showed that J. acutus were able to germinate until Cu concentration of 23 mM Cu, but at 15 and 23 mM Cu, the final percentage of germination were 100 and 68% for seeds derived from polluted area and were 86 and 40% for those collected in non-polluted one, respectively. Moreover, the germination kinetic was more impaired by Cu concentration in those no historically exposed to metal excess. Provenance effect was also reflected in seedlings survival and development; thus at 9 mM Cu higher survival percentage, total height and dry mass were recorded in seedlings derived from no polluted area compared with their historically exposed counterparts. Therefore, we can conclude that the variability of Cu tolerance in J. acutus should be considered for the design of restoration projects, since it allows use of provenances with greater potential as a source of propagules highly adapted to metal excess.
Collapse
Affiliation(s)
- Enrique Mateos-Naranjo
- a Departamento de Biología Vegetal y Ecología, Facultad de Biología , Universidad de Sevilla , Sevilla , Spain
| | - Jesús Alberto Pérez-Romero
- a Departamento de Biología Vegetal y Ecología, Facultad de Biología , Universidad de Sevilla , Sevilla , Spain
| | - Jennifer Mesa-Marín
- a Departamento de Biología Vegetal y Ecología, Facultad de Biología , Universidad de Sevilla , Sevilla , Spain
| | - Javier López-Jurado
- a Departamento de Biología Vegetal y Ecología, Facultad de Biología , Universidad de Sevilla , Sevilla , Spain
| | - Susana Redondo-Gómez
- a Departamento de Biología Vegetal y Ecología, Facultad de Biología , Universidad de Sevilla , Sevilla , Spain
| |
Collapse
|
24
|
Mateos-Naranjo E, Pérez-Romero JA, Redondo-Gómez S, Mesa-Marín J, Castellanos EM, Davy AJ. Salinity alleviates zinc toxicity in the saltmarsh zinc-accumulator Juncus acutus. Ecotoxicol Environ Saf 2018; 163:478-485. [PMID: 30075451 DOI: 10.1016/j.ecoenv.2018.07.092] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 01/31/2018] [Revised: 07/21/2018] [Accepted: 07/23/2018] [Indexed: 05/22/2023]
Abstract
The potential importance of Juncus acutus for remediation of Zn-contaminated lands has been recognized, because of its Zn tolerance and capacity to accumulate Zn. Since it is also a halophyte, the extent to which salinity influences its Zn tolerance requires investigation. A factorial greenhouse experiment was designed to assess the effect of NaCl supply (0 and 85 mM NaCl) on the growth, photosynthetic physiology and tissue ions concentrations of plants exposed to 0, 30 and 100 mM Zn. Our results indicated that NaCl supplementation alleviated the effects of Zn toxicity on growth, as Zn at 100 mM reduced relative growth rate (RGR) by 60% in the absence of NaCl but by only 34% in plants treated also with NaCl. This effect was linked to a reduction in Zn tissue concentrations, as well as to overall protective effects on various stages in the photosynthetic pathway. Thus, at 85 mM NaCl plants were able to maintain higher net photosynthesis (AN) than in the absence of added NaCl, although there were no differences in stomatal conductance (gs). This contributed to preserving the trade-off between CO2 acquisition and water loss, as indicated by higher intrinsic water use efficiency (iWUE). Hence, AN differences were ascribed to limitation in the RuBisCO carboxylation, manifested as higher intercellular CO2 concentration (Ci), together with dysfunction of PSII photochemistry (in term of light harvest and energy excess dissipation), as indicated by higher chronic photoinhibition percentages and variations in the photosynthetic pigment profiles in presence of Zn under non-saline conditions.
Collapse
Affiliation(s)
- Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080 Sevilla, Spain.
| | - Jesús Alberto Pérez-Romero
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080 Sevilla, Spain
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080 Sevilla, Spain
| | - Jennifer Mesa-Marín
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080 Sevilla, Spain
| | - Eloy Manuel Castellanos
- Departamento de Biología Ambiental y Salud Pública, Facultad de Ciencias Experimentales, Universidad de Huelva, 21071 Huelva, Spain
| | - Anthony John Davy
- Centre for Ecology, Evolution and Conservation, School of Biological Sciences, University of East Anglia, Norwich Research Park, Norwich NR4 7TJ, UK
| |
Collapse
|
25
|
Mesnoua M, Mateos-Naranjo E, Pérez-Romero JA, Barcia-Piedras JM, Lotmani B, Redondo-Gómez S. Combined effect of Cr-toxicity and temperature rise on physiological and biochemical responses of Atriplex halimus L. Plant Physiol Biochem 2018; 132:675-682. [PMID: 30145067 DOI: 10.1016/j.plaphy.2018.08.025] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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: 07/20/2018] [Revised: 08/19/2018] [Accepted: 08/19/2018] [Indexed: 05/22/2023]
Abstract
An experiment was conducted to evaluate the combined effect of temperature (26 and 30 °C) and Cr toxicity (0, 100 and 1000 μM Cr) on growth, photosynthesis, water content, Cr and nutrients uptake and translocation. The role of antioxidative enzyme towards stresses tolerance was also investigated. Results showed that the maximum relative growth rate and leaf area per plant of Atriplex halimus L. were recorded at 100 μM Cr and 26 °C. However, presence of Cr reduced net photosynthetic and stomatal conductance rates. Overall, temperature rise enhanced the toxic effect of Cr by reducing growth and photosynthesis and inducing antioxidant enzymes activities. Furthermore, temperature rise increased nutrient uptake, as well as nutrient translocation to aboveground tissues; while it diminished Cr translocation. Finally, roots were the main sink for Cr accumulation in A. halimus. At 1000 μM Cr, root Cr concentrations reached 7.2 and 9.1 mg g-1 at 26 and 30 °C, respectively; while shoot Cr concentrations were 0.45 and 0.44 mg g-1 (26 and 30 °C, respectively). The high Cr-accumulation in roots suggests that A. halimus presents a great potential for phytoremediation, especially phytostabilisation of Cr contaminated soils.
Collapse
Affiliation(s)
- Mohammed Mesnoua
- Scientific and Technical Research Centre for Arid Areas (CRSTRA), Biskra, BP 1682, R.P. Biskra, 07000, Algeria; Laboratory of Plant Protection, University of Abdelhamid Ben Badis of Mostaganem, Algeria
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Apartado 1095, 41080, Sevilla, Spain
| | - Jesús Alberto Pérez-Romero
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Apartado 1095, 41080, Sevilla, Spain
| | - José María Barcia-Piedras
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Apartado 1095, 41080, Sevilla, Spain; IFAPA, Centro Las Torres - Tomejil, Sevilla, Spain
| | - Brahim Lotmani
- Laboratory of Plant Protection, University of Abdelhamid Ben Badis of Mostaganem, Algeria
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Apartado 1095, 41080, Sevilla, Spain.
| |
Collapse
|
26
|
Mesa-Marín J, Del-Saz NF, Rodríguez-Llorente ID, Redondo-Gómez S, Pajuelo E, Ribas-Carbó M, Mateos-Naranjo E. PGPR Reduce Root Respiration and Oxidative Stress Enhancing Spartina maritima Root Growth and Heavy Metal Rhizoaccumulation. Front Plant Sci 2018; 9:1500. [PMID: 30386359 PMCID: PMC6199767 DOI: 10.3389/fpls.2018.01500] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 09/25/2018] [Indexed: 05/18/2023]
Abstract
The present study aims to unravel ecophysiological mechanisms underlying plant-microbe interactions under natural abiotic stress conditions, specifically heavy metal pollution. Effect of plant growth promoting rhizobacteria (PGPR) bioaugmentation on Spartina maritima in vivo root respiration and oxidative stress was investigated. This autochthonous plant is a heavy metal hyperaccumulator cordgrass growing in one of the most polluted estuaries in the world. The association with native PGPR is being studied with a view to their biotechnological potential in environmental decontamination. As a novelty, the oxygen-isotope fractionation technique was used to study the in vivo activities of cytochrome oxidase (COX) and alternative oxidase (AOX) pathways. Inoculated plants showed decreased antioxidant enzymatic activities and in vivo root respiration rates. The reduction in respiratory carbon consumption and the stress alleviation may explain the increments observed in S. maritima root biomass and metal rhizoaccumulation after inoculation. For the first time, plant carbon balance and PGPR are interrelated to explain the effect of rhizobacteria under abiotic stress.
Collapse
Affiliation(s)
- Jennifer Mesa-Marín
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Seville, Spain
| | - Néstor Fernández Del-Saz
- Grup de Recerca en Biologia de les Plantes en Condicions Mediterrànies, Universitat de les Illes Balears, Palma, Spain
- Departamento de Botánica, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Concepción, Chile
| | | | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Seville, Spain
| | - Eloísa Pajuelo
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, Seville, Spain
| | - Miquel Ribas-Carbó
- Grup de Recerca en Biologia de les Plantes en Condicions Mediterrànies, Universitat de les Illes Balears, Palma, Spain
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Seville, Spain
| |
Collapse
|
27
|
Navarro-Torre S, Carro L, Rodríguez-Llorente ID, Pajuelo E, Caviedes MÁ, Igual JM, Redondo-Gómez S, Camacho M, Klenk HP, Montero-Calasanz MDC. Kushneria phyllosphaerae sp. nov. and Kushneria endophytica sp. nov., plant growth promoting endophytes isolated from the halophyte plant Arthrocnemum macrostachyum. Int J Syst Evol Microbiol 2018; 68:2800-2806. [PMID: 30010522 DOI: 10.1099/ijsem.0.002897] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Two endophytic bacteria (EAod3T and EAod7T) were isolated from the aerial part of plants of Arthrocnemum macrostachyum growing in the Odiel marshes (Huelva, Spain). Phylogenetic analysis based on 16S rRNA gene sequences indicated their affiliation to the genus Kushneria. 16S rRNA gene sequences of strains EAod3T and EAod7T showed the highest similarity to Kushneria marisflavi DSM 15357T (99.0 and 97.6 %, respectively). Digital DNA-DNA hybridization studies between the draft genomes of strain EAod3T and K. marisflavi DSM 15357T corresponded to 28.5 % confirming the novel lineage of strain EAod3T in the genus Kushneria. Cells of both strains were Gram-staining-negative, aerobic and motile rods able to grow at 4-37 °C, at pH 5.0-8.0 and tolerate 0.5-25 % NaCl (w/v). They presented ubiquinone Q9 and C16 : 0, C16 : 1ω7c/C16 : 1ω6c and C18 : 1ω7c as the major fatty acids. The predominant polar lipids were diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine. Based on the phenotypic and phylogenetic results, strains EAod3T (=CECT 9073T=LMG 29856T) and EAod7T (=CECT 9075T=LMG 29858T) are proposed as new representatives of the genus Kushneria, and the proposed names are Kushneria phyllosphaerae sp. nov. and Kushneria endophytica sp. nov., respectively. The whole genome sequence of strain EAod3T has a total length of 3.8 Mbp and a G+C content of 59.3 mol%.
Collapse
Affiliation(s)
- Salvadora Navarro-Torre
- 1Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, Calle Profesor García González, 2, 41012 Sevilla, Spain
| | - Lorena Carro
- 2School of Natural and Environmental Sciences (SNES), Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | - Ignacio D Rodríguez-Llorente
- 1Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, Calle Profesor García González, 2, 41012 Sevilla, Spain
| | - Eloísa Pajuelo
- 1Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, Calle Profesor García González, 2, 41012 Sevilla, Spain
| | - Miguel Ángel Caviedes
- 1Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, Calle Profesor García González, 2, 41012 Sevilla, Spain
| | - José Mariano Igual
- 3Instituto de Recursos Naturales y Agrobiología de Salamanca, Consejo Superior de Investigaciones Científicas (IRNASA-CSIC), c/Cordel de Merinas 40-52, 37008 Salamanca, Spain
| | - Susana Redondo-Gómez
- 4Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41012 Sevilla, Spain
| | - Maria Camacho
- 5IFAPA-Instituto de Investigación y Formación Agraria y Pesquera, Centro Las Torres-Tomejil, Ctra. Sevilla-Cazalla de la Sierra, Km 12.2, 41200 Alcalá del Río, Sevilla, Spain
| | - Hans-Peter Klenk
- 2School of Natural and Environmental Sciences (SNES), Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
| | | |
Collapse
|
28
|
Pérez-Romero JA, Idaszkin YL, Barcia-Piedras JM, Duarte B, Redondo-Gómez S, Caçador I, Mateos-Naranjo E. Disentangling the effect of atmospheric CO 2 enrichment on the halophyte Salicornia ramosissima J. Woods physiological performance under optimal and suboptimal saline conditions. Plant Physiol Biochem 2018; 127:617-629. [PMID: 29738990 DOI: 10.1016/j.plaphy.2018.04.041] [Citation(s) in RCA: 7] [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: 10/04/2017] [Accepted: 04/30/2018] [Indexed: 05/22/2023]
Abstract
A mesocosm experiment was designed to assess the effect of atmospheric CO2 increment on the salinity tolerance of the C3 halophyte Salicornia ramosissima. Thus, the combined effect of 400 ppm and 700 ppm CO2 at 0, 171 and 510 mM NaCl on plants growth, gas exchange, chlorophyll fluorescence parameters, pigments profiles, antioxidative enzyme activities and water relations was studied. Our results highlighted a positive effect of atmospheric CO2 increment on plant physiological performance under suboptimal salinity concentration (510 mM NaCl). Thus, we recorded higher net photosynthetic rate (AN) values under saline conditions and 700 ppm CO2, being this effect mainly mediated by a reduction of mesophyll (gm) and biochemical limitation imposed to salt excess. In addition, rising atmospheric CO2 led to a better plant water balance, linked with a reduction of stomatal conductante (gs) and an overall increment of osmotic potential (Ѱo) with NaCl concentration increment. In spite of these positive effects, there were no significant biomass variations between any treatments. Being this fact ascribed by the investment of the higher energy fixed for salinity stress defence mechanisms, which allowed plants to maintain more active the photochemical machinery even at high salinities, reducing the risk of ROS production, as indicated an improvement of the electron flux and a rise of the energy dissipation. Finally, the positive effect of the CO2 was also supported by the modulation of pigments profiles (mainly zeaxhantin and violaxhantin) concentrations and anti-oxidative stress enzymes, such as superoxide dismutase (SOD) and ascorbate peroxidase (APx).
Collapse
Affiliation(s)
- Jesús Alberto Pérez-Romero
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080, Sevilla, Spain.
| | - Yanina Lorena Idaszkin
- Instituto Patagónico para el Estudio de los Ecosistemas Continentales (IPEEC-CONICET), Boulevard Brown, 2915, U9120ACD, Puerto Madryn, Chubut, Argentina; Universidad Nacional de la Patagonia San Juan Bosco, Boulevard Brown, 3051, U9120ACD, Puerto Madryn, Chubut, Argentina
| | - Jose-Maria Barcia-Piedras
- Department of Ecological Production and Natural Resources Center IFAPA Las Torres, Tomejil Road Sevilla, Cazalla Km 12'2, 41200, Alcalá del Río, Seville, Spain
| | - Bernardo Duarte
- MARE - Marine and Environmental Sciences Centre, Faculty of Sciences of the University of Lisbon, Campo Grande, 1749-016, Lisbon, Portugal
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080, Sevilla, Spain
| | - Isabel Caçador
- MARE - Marine and Environmental Sciences Centre, Faculty of Sciences of the University of Lisbon, Campo Grande, 1749-016, Lisbon, Portugal
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080, Sevilla, Spain
| |
Collapse
|
29
|
Paredes-Páliz K, Rodríguez-Vázquez R, Duarte B, Caviedes MA, Mateos-Naranjo E, Redondo-Gómez S, Caçador MI, Rodríguez-Llorente ID, Pajuelo E. Investigating the mechanisms underlying phytoprotection by plant growth-promoting rhizobacteria in Spartina densiflora under metal stress. Plant Biol (Stuttg) 2018; 20:497-506. [PMID: 29350476 DOI: 10.1111/plb.12693] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [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: 11/23/2017] [Accepted: 01/12/2018] [Indexed: 05/24/2023]
Abstract
Pollution of coasts by toxic metals and metalloids is a worldwide problem for which phytoremediation using halophytes and associated microbiomes is becoming relevant. Metal(loid) excess is a constraint for plant establishment and development, and plant growth promoting rhizobacteria (PGPR) mitigate plant stress under these conditions. However, mechanisms underlying this effect remain elusive. The effect of toxic metal(loid)s on activity and gene expression of ROS-scavenging enzymes in roots of the halophyte Spartina densiflora grown on real polluted sediments in a greenhouse experiment was investigated. Sediments of the metal-polluted joint estuary of Tinto and Odiel rivers and control, unpollutred samples from the Piedras estuary were collected and submitted to ICP-OES. Seeds of S. densiflora were collected from the polluted Odiel marshes and grown in polluted and unpolluted sediments. Rhizophere biofilm-forming bacteria were selected based on metal tolerance and inoculated to S. densiflora and grown for 4 months. Fresh or frozen harvested plants were used for enzyme assays and gene expression studies, respectively. Metal excess induced SOD (five-fold increase), whereas CAT and ascorbate peroxidase displayed minor induction (twofold). A twofold increase of TBARs indicated membrane damage. Our results showed that metal-resistant PGPR (P. agglomerans RSO6 and RSO7 and B. aryabhattai RSO25) contributed to alleviate metal stress, as deduced from lower levels of all antioxidant enzymes to levels below those of non-exposed plants. The oxidative stress index (OSI) decreased between 50 and 75% upon inoculation. The results also evidenced the important role of PAL, involved in secondary metabolism and/or lignin synthesis, as a pathway for metal stress management in this halophyte upon inoculation with appropriate PGPR, since the different inoculation treatments enhanced PAL expression between 3.75- and five-fold. Our data confirm, at the molecular level, the role of PGPR in alleviating metal stress in S. densiflora and evidence the difficulty of working with halophytes for which little genetic information is available.
Collapse
Affiliation(s)
- K Paredes-Páliz
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain
| | - R Rodríguez-Vázquez
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain
| | - B Duarte
- MARE - Marine and Environmental Sciences Centre, Faculty of Sciences of the University of Lisbon, Lisbon, Portugal
| | - M A Caviedes
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain
| | - E Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Sevilla, Spain
| | - S Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Sevilla, Spain
| | - M I Caçador
- MARE - Marine and Environmental Sciences Centre, Faculty of Sciences of the University of Lisbon, Lisbon, Portugal
| | - I D Rodríguez-Llorente
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain
| | - E Pajuelo
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain
| |
Collapse
|
30
|
Pérez-Romero JA, Idaszkin YL, Duarte B, Baeta A, Marques JC, Redondo-Gómez S, Caçador I, Mateos-Naranjo E. Atmospheric CO 2 enrichment effect on the Cu-tolerance of the C 4 cordgrass Spartina densiflora. J Plant Physiol 2018; 220:155-166. [PMID: 29179083 DOI: 10.1016/j.jplph.2017.11.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [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: 06/20/2017] [Revised: 11/13/2017] [Accepted: 11/15/2017] [Indexed: 06/07/2023]
Abstract
A glasshouse experiment was designed to investigate the effect of the co-occurrence of 400 and 700ppm CO2 at 0, 15 and 45mM Cu on the Cu-tolerance of C4 cordgrass species Spartina densiflora, by measuring growth, gas exchange, efficiency of PSII, pigments profiles, antioxidative enzyme activities and nutritional balance. Our results revealed that the rising atmospheric CO2 mitigated growth reduction imposed by Cu in plants grown at 45mM Cu, leading to leaf Cu concentration bellow than 270mgKg-1 Cu, caused by an evident dilution effect. On the other hand, non-CO2 enrichment plants showed leaf Cu concentration values up to 737.5mgKg-1 Cu. Furthermore, improved growth was associated with higher net photosynthetic rate (AN). The beneficial effect of rising CO2 on photosynthetic apparatus seems to be associated with a reduction of stomatal limitation imposed by Cu excess, which allowed these plants to maintain greater iWUE values. Also, plants grown at 45mM Cu and 700ppm CO2, showed higher ETR values and lower energy dissipation, which could be linked with an induction of Rubisco carboxylation and supported by the recorded amelioration of N imbalance. Furthermore, higher ETR values under CO2 enrichment could lead to an additional consumption of reducing equivalents. Idea that was reflected in the lower values of ETRmax/AN ratio, malondialdehyde (MDA) and ascorbate peroxidase (APx), guaiacol peroxidase (GPx) and superoxide dismutase (SOD) activities under Cu excess, which could indicate a lower production of ROS species under elevated CO2 concentration, due to a better use of absorbed energy.
Collapse
Affiliation(s)
- Jesús Alberto Pérez-Romero
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080, Sevilla, Spain
| | - Yanina Lorena Idaszkin
- Instituto Patagónico para el Estudio de los Ecosistemas Continentales (IPEEC-CONICET), Boulevard Brown 2915, U9120ACD Puerto Madryn, Chubut, Argentina; Universidad Nacional de la Patagonia San Juan Bosco, Boulevard Brown 3051, U9120ACD Puerto Madryn, Chubut, Argentina
| | - Bernardo Duarte
- MARE - Marine and Environmental Sciences Centre, Faculty of Sciences of the University of Lisbon, Campo Grande, 1749-016 Lisbon, Portugal
| | - Alexandra Baeta
- MARE - Marine and Environmental Sciences Centre, c/o DCV, Faculty of Sciences and Technology, University of Coimbra, Coimbra, Portugal
| | - João Carlos Marques
- MARE - Marine and Environmental Sciences Centre, c/o DCV, Faculty of Sciences and Technology, University of Coimbra, Coimbra, Portugal
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080, Sevilla, Spain
| | - Isabel Caçador
- MARE - Marine and Environmental Sciences Centre, Faculty of Sciences of the University of Lisbon, Campo Grande, 1749-016 Lisbon, Portugal
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080, Sevilla, Spain.
| |
Collapse
|
31
|
Paredes-Páliz KI, Mateos-Naranjo E, Doukkali B, Caviedes MA, Redondo-Gómez S, Rodríguez-Llorente ID, Pajuelo E. Modulation of Spartina densiflora plant growth and metal accumulation upon selective inoculation treatments: A comparison of gram negative and gram positive rhizobacteria. Mar Pollut Bull 2017; 125:77-85. [PMID: 28797542 DOI: 10.1016/j.marpolbul.2017.07.072] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [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: 03/11/2017] [Revised: 07/12/2017] [Accepted: 07/31/2017] [Indexed: 06/07/2023]
Abstract
Metal contamination of estuaries is a severe environmental problem, for which phytoremediation is gaining momentum. In particular, the associations between halophytes-autochthonous rhizobacteria have proven useful for metal phytostabilization in salt marshes. In this work, three bacterial strains (gram-negative and gram-positive) were used for Spartina densiflora inoculation. All three bacteria, particularly Pantoea strains, promoted plant growth and mitigated metal stress on polluted sediments, as revealed from functionality of the photosynthetic apparatus (PSII) and maintenance of nutrient balance. Pantoea strains did not significantly affect metal accumulation in plant roots, whereas the Bacillus strain enhanced it. Metal loading to shoots depended on particular elements, although in all cases it fell below the threshold for animal consumption. Our results confirm the possibility of modulating plant growth and metal accumulation upon selective inoculation, and the suitability of halophyte-rhizobacteria interactions as biotechnological tools for metal phytostabilization in salt marshes, preventing metal transfer to the food chain.
Collapse
Affiliation(s)
- Karina I Paredes-Páliz
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, c/ Profesor García González, 2, 41012 Sevilla, Spain
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41012 Sevilla, Spain
| | - Bouchra Doukkali
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, c/ Profesor García González, 2, 41012 Sevilla, Spain
| | - Miguel A Caviedes
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, c/ Profesor García González, 2, 41012 Sevilla, Spain
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41012 Sevilla, Spain
| | - Ignacio D Rodríguez-Llorente
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, c/ Profesor García González, 2, 41012 Sevilla, Spain
| | - Eloísa Pajuelo
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, c/ Profesor García González, 2, 41012 Sevilla, Spain.
| |
Collapse
|
32
|
Puglielli G, Redondo-Gómez S, Gratani L, Mateos-Naranjo E. Highlighting the differential role of leaf paraheliotropism in two Mediterranean Cistus species under drought stress and well-watered conditions. J Plant Physiol 2017; 213:199-208. [PMID: 28412604 DOI: 10.1016/j.jplph.2017.02.015] [Citation(s) in RCA: 5] [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] [Received: 01/17/2017] [Revised: 02/27/2017] [Accepted: 02/28/2017] [Indexed: 06/07/2023]
Abstract
The differential degree by which paraheliotropism may counterbalance the deleterious impact of high irradiance between congeneric species in relation to different water availabilities has been poorly investigated. We followed the evolution of gas exchange, quenching analysis and OJIP parameters in restrained (R) and free (F) to move leaves of Cistus monspeliensis (CM) and Cistus salvifolius (CS) under drought stress (WS) and well-watered conditions (WW). Concerning gas exchange parameters, leaf restriction effect was overall not significant in CM except in apparent carboxylation efficiency (Ce) under WS, while CS showed a significant sensitivity of maximum net photosynthetic rate (Amax), stomatal conductance (gs) and Ce even under WW. The recovery analysis highlighted also a faster gs recovery in F leaves. Furthermore, in both the species, restriction affected photon allocation pathways especially in terms of light-regulated and light-independent constitutive non-photochemical energy dissipation under WW, ultimately affecting electron transport rate (ETR). Nevertheless, the OJIP analysis provided us evidences that CM was characterized by a down-regulation of ETR while an impairment occurs in CS. In CM this was due to its ability to modify a certain fraction of reaction centers thus resulting in a higher capability for dissipation of excess light energy under well-watered conditions, not affecting electron transport efficiency. This response was not observed in CS. Overall, we demonstrated that congeneric species, even mostly sharing the same physiological targets, differ in the degree by which leaf movements help to counterbalance the negative effect of the high irradiance in relation with the amount of water available.
Collapse
Affiliation(s)
- Giacomo Puglielli
- Department of Environmental Biology, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41012, Sevilla, Spain
| | - Loretta Gratani
- Department of Environmental Biology, Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41012, Sevilla, Spain.
| |
Collapse
|
33
|
Navarro-Torre S, Barcia-Piedras JM, Caviedes MA, Pajuelo E, Redondo-Gómez S, Rodríguez-Llorente ID, Mateos-Naranjo E. Bioaugmentation with bacteria selected from the microbiome enhances Arthrocnemum macrostachyum metal accumulation and tolerance. Mar Pollut Bull 2017; 117:340-347. [PMID: 28190522 DOI: 10.1016/j.marpolbul.2017.02.008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 02/01/2017] [Accepted: 02/05/2017] [Indexed: 06/06/2023]
Abstract
A glasshouse experiment was designed to investigate the role of bacterial consortia isolated from the endosphere (CE) and rhizosphere (CR) of Arthrocnemum macrostachyum on its metal uptake capacity and tolerance in plants grown in metal polluted sediments. A. macrostachyum plants were randomly assigned to three bioaugmentation treatments (CE, CR and without inoculation) during 120days. Bioaugmentation with both bacterial consortia enhanced A. macrostachyum capacity to accumulate ions in its roots, while shoot ions concentration only increased with CE treatment. Furthermore bioaugmentation ameliorated the phytotoxicity levels, which was reflected in an increment of plant growth of 59 and 113% for shoots and 52 and 98% for roots with CE and CR treatments, respectively. This effect was supported by bacteria beneficial effect on photochemical apparatus and the modulation of its oxidative stress machinery. These findings indicated that bacteria selected from the microbiome can be claimed to improve A. macrostachyum metal remediation efficiency.
Collapse
Affiliation(s)
- Salvadora Navarro-Torre
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, Calle Profesor García González, 2, 41012 Sevilla, Spain
| | - José M Barcia-Piedras
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41012 Sevilla, Spain; IFAPA Centro Las Torres -Tomejil, Ctra Sevilla-Cazalla, km 12,200, 41200 Alcalá del Río, Sevilla, Spain
| | - Miguel A Caviedes
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, Calle Profesor García González, 2, 41012 Sevilla, Spain
| | - Eloísa Pajuelo
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, Calle Profesor García González, 2, 41012 Sevilla, Spain
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41012 Sevilla, Spain
| | - Ignacio D Rodríguez-Llorente
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, Calle Profesor García González, 2, 41012 Sevilla, Spain
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41012 Sevilla, Spain.
| |
Collapse
|
34
|
Navarro-Torre S, Barcia-Piedras JM, Mateos-Naranjo E, Redondo-Gómez S, Camacho M, Caviedes MA, Pajuelo E, Rodríguez-Llorente ID. Assessing the role of endophytic bacteria in the halophyte Arthrocnemum macrostachyum salt tolerance. Plant Biol (Stuttg) 2017; 19:249-256. [PMID: 27770586 DOI: 10.1111/plb.12521] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [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: 09/14/2016] [Accepted: 10/18/2016] [Indexed: 05/13/2023]
Abstract
There is an increasing interest to use halophytes for revegetation of salt affected ecosystems, as well as in understanding their mechanisms of salt tolerance. We hypothesized that bacteria from the phyllosphere of these plants might play a key role in its high tolerance to excessive salinity. Eight endophytic bacteria belonging to Bacillus and closely related genera were isolated from phyllosphere of the halophyte Arthrocnemum macrostachyum growing in salty agricultural soils. The presence of plant-growth promoting (PGP) properties, enzymatic activities and tolerance towards NaCl was determined. Effects of inoculation on seeds germination and adult plant growth under experimental NaCl treatments (0, 510 and 1030 mM NaCl) were studied. Inoculation with a consortium including the best performing bacteria improved considerably the kinetics of germination and the final germination percentage of A. macrostachyum seeds. At high NaCl concentrations (1030 mM), inoculation of plants mitigated the effects of high salinity on plant growth and physiological performance and, in addition, this consortium appears to have increased the potential of A. macrostachyum to accumulate Na+ in its shoots, thus improving sodium phytoextraction capacity. Bacteria isolated from A. macrostachyum phyllosphere seem to play an important role in plant salt tolerance under stressing salt concentrations. The combined use of A. macrostachyum and its microbiome can be an adequate tool to enhance plant adaptation and sodium phytoextraction during restoration of salt degraded soils.
Collapse
Affiliation(s)
- S Navarro-Torre
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain
| | - J M Barcia-Piedras
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Sevilla, Spain
- IFAPA, Centro Las Torres -Tomejil, Sevilla, Spain
| | - E Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Sevilla, Spain
| | - S Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Sevilla, Spain
| | - M Camacho
- IFAPA, Centro Las Torres -Tomejil, Sevilla, Spain
| | - M A Caviedes
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain
| | - E Pajuelo
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain
| | - I D Rodríguez-Llorente
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain
| |
Collapse
|
35
|
Pérez-Romero JA, Redondo-Gómez S, Mateos-Naranjo E. Growth and photosynthetic limitation analysis of the Cd-accumulator Salicornia ramosissima under excessive cadmium concentrations and optimum salinity conditions. Plant Physiol Biochem 2016; 109:103-113. [PMID: 27665044 DOI: 10.1016/j.plaphy.2016.09.011] [Citation(s) in RCA: 8] [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] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Revised: 09/14/2016] [Accepted: 09/14/2016] [Indexed: 05/21/2023]
Abstract
Cadmium (Cd) is a non-essential element for plants, and its excess impairs plant performance. Physiological impacts of Cd excess are well known in non-tolerant plants, however this information is scarce for Cd-tolerant plants. A glasshouse experiment was designed to investigate the effect of five different Cd levels (0, 0.05, 0.20, 0.65 and 1.35 mM Cd) on the growth, photosynthetic apparatus (PSII chemistry), gas exchange characteristics, photosynthetic pigments profiles, water relations and nutritional balance of the Cd-accumulator Salicornia ramosissima. Ours results confirmed the accumulation capacity of S. ramosissima, as indicated the bioaccumulation factor (BC) greater than 1.0 for all Cd levels. Furthermore, after 21 days of treatment S. ramosissima growth was not highly affected by Cd. Total photosynthetic limitation increased from 38% at 0.05 mM Cd to 70% at 1.35 mM Cd. CO2 diffusion restriction imposed the main contribution to total photosynthetic limitation. Mesophyll conductance reduction was of major importance (with between 69 and 86%), followed by stomatal conductance (with between 9 and 20%). Maximum carboxylation rate (Vc,max), remained stable until 0.2 mM Cd, and chlorophyll fluorescence parameters (Fv/Fm, qP) and pigments concentrations were not significantly decreased by increased Cd supply. Finally, S. ramosissima water relations (intrinsic water use efficiency and relative water content) and nutritional level did not highly vary between Cd treatments. Thus, our finding suggested that Cd tolerance S. ramosissima is in certain degree supported by the tolerance of its carbon assimilation enzyme (RuBisCO) and with the high functionality and integrity of the PSII reaction center under Cd excess.
Collapse
Affiliation(s)
- Jesús Alberto Pérez-Romero
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080, Sevilla, Spain
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080, Sevilla, Spain
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080, Sevilla, Spain.
| |
Collapse
|
36
|
Camacho M, Redondo-Gómez S, Rodríguez-Llorente I, Rohde M, Spröer C, Schumann P, Klenk HP, Montero-Calasanz MDC. Labrenzia salina sp. nov., isolated from the rhizosphere of the halophyte Arthrocnemum macrostachyum. Int J Syst Evol Microbiol 2016; 66:5173-5180. [PMID: 27618795 DOI: 10.1099/ijsem.0.001492] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
A novel, halophilic, motile, rod-shaped, Gram-staining-negative and non-endospore forming bacterium, designated Cs25T, was isolated from the rhizosphere of the halophyte Arthrocnemum macrostachyum growing in a tidal flat. Strain Cs25T was observed to be catalase-negative and oxidase-positive, and to hydrolyse hypoxanthine. Growth occurred from 15 to 40 °C, at pH 7.0-10.0 and with 1-11 % (w/v) NaCl. Q-10 was identified as the dominant ubiquinone, and the major cellular fatty acids were C18 : 1ω7c, 11-methyl C18 : 1ω7c, C20 : 1ω7c and C18 : 0. The polar lipids comprised phosphatidylmonomethylethanolamine, phosphatidylcholine, sulphoquinovosyldiacylglyceride, diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine. The 16S rRNA gene showed 99.19, 98.6 and 98.59 % sequence identity with Labrenzia alba DSM 18320T, L. aggregata DSM 13394T and L. marina DSM 17023T, respectively. Based on the phenotypic and molecular features and DNA-DNA hybridization data, it is concluded that strain Cs25T represents a novel species for which the name Labrenzia salinasp. nov. is proposed. The type strain is Cs25T (=DSM 29163T=CECT 8816T).
Collapse
Affiliation(s)
- Maria Camacho
- IFAPA-Instituto de Investigación y Formación Agraria y Pesquera, Centro Las Torres-Tomejil, Ctra. Sevilla-Cazalla de la Sierra, Km 12.2, 41200 Alcalá del Río, Sevilla, Spain
| | - Susana Redondo-Gómez
- Facultad de Biología, Universidad de Sevilla, Avda. Reina Mercedes s/n, Sevilla, Spain
| | | | - Manfred Rohde
- Central Facility for Microscopy, HZI - Helmholtz Centre for Infection Research, Inhoffenstraße 7, 38124 Braunschweig, Germany
| | - Cathrin Spröer
- Leibniz Institute DSMZ - German Collection of Microorganisms and Cell Cultures, Inhoffenstraße 7B, 38124 Braunschweig, Germany
| | - Peter Schumann
- Leibniz Institute DSMZ - German Collection of Microorganisms and Cell Cultures, Inhoffenstraße 7B, 38124 Braunschweig, Germany
| | - Hans-Peter Klenk
- School of Biology, Newcastle University, Ridley Building, Newcastle upon Tyne NE1 7RU, UK
| | - Maria Del Carmen Montero-Calasanz
- School of Biology, Newcastle University, Ridley Building, Newcastle upon Tyne NE1 7RU, UK.,Leibniz Institute DSMZ - German Collection of Microorganisms and Cell Cultures, Inhoffenstraße 7B, 38124 Braunschweig, Germany
| |
Collapse
|
37
|
Mesnoua M, Mateos-Naranjo E, Barcia-Piedras JM, Pérez-Romero JA, Lotmani B, Redondo-Gómez S. Physiological and biochemical mechanisms preventing Cd-toxicity in the hyperaccumulator Atriplex halimus L. Plant Physiol Biochem 2016; 106:30-8. [PMID: 27135816 DOI: 10.1016/j.plaphy.2016.04.041] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [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: 02/24/2016] [Revised: 04/20/2016] [Accepted: 04/22/2016] [Indexed: 05/20/2023]
Abstract
The xero-halophyte Atriplex halimus L., recently described as Cd-hyperaccumulator, was examined to determine Cd toxicity threshold and the physiological mechanisms involved in Cd tolerance. An experiment was conducted to investigate the effect of cadmium from 0 to 1350 μM on chlorophyll fluorescence parameters, gas exchange, photosynthetic pigment concentrations and antioxidative enzyme activities of A. halimus. Cadmium, calcium, iron, manganese, magnesium, potassium, phosphorous, sodium and zinc concentrations were also analyzed. Plants of A. halimus were not able to survive at 1350 μM Cd and the upper tolerance limit was recorded at 650 μM Cd; although chlorosis was observed from 200 μM Cd. Cadmium accumulation increased with increase in Cd supply, reaching maxima of 0.77 and 4.65 mg g(-1) dry weight in shoots and roots, respectively, at 650 μM Cd. Dry mass, shoot length, specific leaf area, relative growth rate, net photosynthetic rate, stomatal conductance, pigments contents and chlorophyll fluorescence were significantly reduced by increasing Cd concentration. However, the activities of superoxide dismutase (SOD; EC1.15.1.1), catalase (CAT; EC1.11.1.6) and guaiacol peroxidase (GPx; EC1.11.1.7) were significantly induced by Cd. Exposures to Cd caused also a significant decrease in P contents in roots, Mg and Mn contents in shoots and Fe and K contents in roots and shoots and had no effect on Ca, Na and Zn contents. The tolerance of A. halimus to Cd stress might be related with its capacity to avoid the translocation of great amounts of Cd in its aboveground tissues and higher activities of enzymatic antioxidants in the leaf.
Collapse
Affiliation(s)
- Mohammed Mesnoua
- Scientific and Technical Research Centre for Arid Areas (CRSTRA), BP 1682 R.P., 07000, Biskra, Algeria; Laboratory of Plant Protection, University of Abdelhamid Ben Badis of Mostaganem, Algeria
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Apartado 1095, 41080, Sevilla, Spain
| | - José María Barcia-Piedras
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Apartado 1095, 41080, Sevilla, Spain
| | - Jesús Alberto Pérez-Romero
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Apartado 1095, 41080, Sevilla, Spain
| | - Brahim Lotmani
- Laboratory of Plant Protection, University of Abdelhamid Ben Badis of Mostaganem, Algeria
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Apartado 1095, 41080, Sevilla, Spain.
| |
Collapse
|
38
|
García-Jaramillo M, Redondo-Gómez S, Barcia-Piedras JM, Aguilar M, Jurado V, Hermosín MC, Cox L. Dissipation and effects of tricyclazole on soil microbial communities and rice growth as affected by amendment with alperujo compost. Sci Total Environ 2016; 550:637-644. [PMID: 26849328 DOI: 10.1016/j.scitotenv.2016.01.174] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 09/23/2015] [Revised: 01/25/2016] [Accepted: 01/26/2016] [Indexed: 06/05/2023]
Abstract
The presence of pesticides in surface and groundwater has grown considerably in the last decades as a consequence of the intensive farming activity. Several studies have shown the benefits of using organic amendments to prevent losses of pesticides from runoff or leaching. A particular soil from the Guadalquivir valley was placed in open air ponds and amended at 1 or 2% (w/w) with alperujo compost (AC), a byproduct from the olive oil industry. Tricyclazole dissipation, rice growth and microbial diversity were monitored along an entire rice growing season. An increase in the net photosynthetic rate of Oryza sativa plants grown in the ponds with AC was observed. These plants produced between 1100 and 1300kgha(-1) more rice than plants from the unamended ponds. No significant differences were observed in tricyclazole dissipation, monitored for a month in soil, surface and drainage water, between the amended and unamended ponds. The structure and diversity of bacteria and fungi communities were also studied by the use of the polymerase chain reaction denaturing gel electrophoresis (PCR-DGGE) from DNA extracted directly from soil samples. The banding pattern was similar for all treatments, although the density of bands varied throughout the time. Apparently, tricyclazole did not affect the structure and diversity of bacteria and fungi communities, and this was attributed to its low bioavailability. Rice cultivation under paddy field conditions may be more efficient under the effects of this compost, due to its positive effects on soil properties, rice yield, and soil microbial diversity.
Collapse
Affiliation(s)
- M García-Jaramillo
- Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS-CSIC), P.O. Box 1052, 41080 Seville, Spain
| | - S Redondo-Gómez
- Departamento de Fisiología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, P.O. Box 1095, 41080 Seville, Spain
| | - J M Barcia-Piedras
- Departamento de Fisiología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, P.O. Box 1095, 41080 Seville, Spain
| | - M Aguilar
- Centro de Investigación y Formación Agraria (CIFA), Las Torres-Tomejíl, Ctra. Sevilla-Rinconada, Km 12, 41200 Alcalá del Río, Seville, Spain
| | - V Jurado
- Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS-CSIC), P.O. Box 1052, 41080 Seville, Spain
| | - M C Hermosín
- Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS-CSIC), P.O. Box 1052, 41080 Seville, Spain
| | - L Cox
- Instituto de Recursos Naturales y Agrobiología de Sevilla (IRNAS-CSIC), P.O. Box 1052, 41080 Seville, Spain.
| |
Collapse
|
39
|
Camacho M, del Carmen Montero-Calasanz M, Redondo-Gómez S, Rodríguez-Llorente I, Schumann P, Klenk HP. Microbulbifer rhizosphaerae sp. nov., isolated from the rhizosphere of the halophyte Arthrocnemum macrostachyum. Int J Syst Evol Microbiol 2016; 66:1844-1850. [DOI: 10.1099/ijsem.0.000955] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Maria Camacho
- IFAPA-Instituto de Investigación y Formación Agraria y Pesquera, Centro Las Torres-Tomejil, Ctra. Sevilla-Cazalla de la Sierra, Km 12.2, 41200 Alcalá del Río, Sevilla, Spain
| | - Maria del Carmen Montero-Calasanz
- Leibniz Institute DSMZ – German Collection of Microorganisms and Cell Cultures, Inhoffenstraße 7B, 38124 Braunschweig, Germany
- School of Biology, Newcastle University, Ridley Building, Newcastle upon Tyne, NE1 7RU, UK
| | - Susana Redondo-Gómez
- Facultad de Biología, Universidad de Sevilla. Avda. Reina Mercedes s/n, ., Sevilla, Spain
| | | | - Peter Schumann
- Leibniz Institute DSMZ – German Collection of Microorganisms and Cell Cultures, Inhoffenstraße 7B, 38124 Braunschweig, Germany
| | - Hans-Peter Klenk
- School of Biology, Newcastle University, Ridley Building, Newcastle upon Tyne, NE1 7RU, UK
| |
Collapse
|
40
|
Mesa J, Rodríguez-Llorente ID, Pajuelo E, Piedras JMB, Caviedes MA, Redondo-Gómez S, Mateos-Naranjo E. Moving closer towards restoration of contaminated estuaries: Bioaugmentation with autochthonous rhizobacteria improves metal rhizoaccumulation in native Spartina maritima. J Hazard Mater 2015; 300:263-271. [PMID: 26188869 DOI: 10.1016/j.jhazmat.2015.07.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [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: 01/15/2015] [Revised: 06/16/2015] [Accepted: 07/03/2015] [Indexed: 05/15/2023]
Abstract
Spartina maritima is an ecosystem engineer that has shown to be useful for phytoremediation purposes. A glasshouse experiment using soil from a metal-contaminated estuary was designed to investigate the effect of a native bacterial consortium, isolated from S. maritima rizhosphere and selected owing to their plant growth promoting properties and multiresistance to heavy metals, on plant growth and metal accumulation. Plants of S. maritima were randomly assigned to three soil bioaugmentation treatments (without inoculation, one inoculation and repeated inoculations) for 30 days. Growth parameters and photosynthetic traits, together with total concentrations of several metals were determined in roots and/or leaves. Bacterial inoculation improved root growth, through a beneficial effect on photosynthetic rate (AN) due to its positive impact on functionality of PSII and chlorophyll concentration. Also, favoured intrinsic water use efficiency of S. maritima, through the increment in AN, stomatal conductance and in root-to-shoot ratio. Moreover, this consortium was able to stimulate plant metal uptake specifically in roots, with increases of up to 19% for As, 65% for Cu, 40% for Pb and 29% for Zn. Thus, bioaugmentation of S. maritima with the selected bacterial consortium can be claimed to enhance plant adaptation and metal rhizoaccumulation during marsh restoration programs.
Collapse
Affiliation(s)
- Jennifer Mesa
- Departamento de Microbiologia, Facultad de Farmacia, Universidad de Sevilla, C/ Profesor García González 2, 41012 Sevilla, Spain
| | - Ignacio David Rodríguez-Llorente
- Departamento de Microbiologia, Facultad de Farmacia, Universidad de Sevilla, C/ Profesor García González 2, 41012 Sevilla, Spain
| | - Eloisa Pajuelo
- Departamento de Microbiologia, Facultad de Farmacia, Universidad de Sevilla, C/ Profesor García González 2, 41012 Sevilla, Spain
| | - José María Barcia Piedras
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080 Sevilla, Spain
| | - Miguel Angel Caviedes
- Departamento de Microbiologia, Facultad de Farmacia, Universidad de Sevilla, C/ Profesor García González 2, 41012 Sevilla, Spain
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080 Sevilla, Spain
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, 1095, 41080 Sevilla, Spain.
| |
Collapse
|
41
|
Mesa J, Mateos-Naranjo E, Caviedes MA, Redondo-Gómez S, Pajuelo E, Rodríguez-Llorente ID. Endophytic Cultivable Bacteria of the Metal Bioaccumulator Spartina maritima Improve Plant Growth but Not Metal Uptake in Polluted Marshes Soils. Front Microbiol 2015; 6:1450. [PMID: 26733985 PMCID: PMC4686625 DOI: 10.3389/fmicb.2015.01450] [Citation(s) in RCA: 51] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Accepted: 12/04/2015] [Indexed: 01/23/2023] Open
Abstract
Endophytic bacterial population was isolated from Spartina maritima tissues, a heavy metal bioaccumulator cordgrass growing in the estuaries of Tinto, Odiel, and Piedras River (south west Spain), one of the most polluted areas in the world. Strains were identified and ability to tolerate salt and heavy metals along with plant growth promoting and enzymatic properties were analyzed. A high proportion of these bacteria were resistant toward one or several heavy metals and metalloids including As, Cu, and Zn, the most abundant in plant tissues and soil. These strains also exhibited multiple enzymatic properties as amylase, cellulase, chitinase, protease and lipase, as well as plant growth promoting properties, including nitrogen fixation, phosphates solubilization, and production of indole-3-acetic acid (IAA), siderophores and 1-aminocyclopropane-1-carboxylate (ACC) deaminase. The best performing strains (Micrococcus yunnanensis SMJ12, Vibrio sagamiensis SMJ18, and Salinicola peritrichatus SMJ30) were selected and tested as a consortium by inoculating S. maritima wild plantlets in greenhouse conditions along with wild polluted soil. After 30 days, bacterial inoculation improved plant photosynthetic traits and favored intrinsic water use efficiency. However, far from stimulating plant metal uptake, endophytic inoculation lessened metal accumulation in above and belowground tissues. These results suggest that inoculation of S. maritima with indigenous metal-resistant endophytes could mean a useful approach in order to accelerate both adaption and growth of this indigenous cordgrass in polluted estuaries in restorative operations, but may not be suitable for rhizoaccumulation purposes.
Collapse
Affiliation(s)
- Jennifer Mesa
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de SevillaSevilla, Spain
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de SevillaSevilla, Spain
| | - Miguel A. Caviedes
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de SevillaSevilla, Spain
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de SevillaSevilla, Spain
| | - Eloisa Pajuelo
- Departamento de Microbiología y Parasitología, Facultad de Farmacia, Universidad de SevillaSevilla, Spain
| | | |
Collapse
|
42
|
Porcel R, Redondo-Gómez S, Mateos-Naranjo E, Aroca R, Garcia R, Ruiz-Lozano JM. Arbuscular mycorrhizal symbiosis ameliorates the optimum quantum yield of photosystem II and reduces non-photochemical quenching in rice plants subjected to salt stress. J Plant Physiol 2015; 185:75-83. [PMID: 26291919 DOI: 10.1016/j.jplph.2015.07.006] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [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: 06/12/2015] [Revised: 07/15/2015] [Accepted: 07/17/2015] [Indexed: 05/08/2023]
Abstract
Rice is the most important food crop in the world and is a primary source of food for more than half of the world population. However, salinity is considered the most common abiotic stress reducing its productivity. Soil salinity inhibits photosynthetic processes, which can induce an over-reduction of the reaction centres in photosystem II (PSII), damaging the photosynthetic machinery. The arbuscular mycorrhizal (AM) symbiosis may improve host plant tolerance to salinity, but it is not clear how the AM symbiosis affects the plant photosynthetic capacity, particularly the efficiency of PSII. This study aimed at determining the influence of the AM symbiosis on the performance of PSII in rice plants subjected to salinity. Photosynthetic activity, plant gas-exchange parameters, accumulation of photosynthetic pigments and rubisco activity and gene expression were also measured in order to analyse comprehensively the response of the photosynthetic processes to AM symbiosis and salinity. Results showed that the AM symbiosis enhanced the actual quantum yield of PSII photochemistry and reduced the quantum yield of non-photochemical quenching in rice plants subjected to salinity. AM rice plants maintained higher net photosynthetic rate, stomatal conductance and transpiration rate than nonAM plants. Thus, we propose that AM rice plants had a higher photochemical efficiency for CO2 fixation and solar energy utilization and this increases plant salt tolerance by preventing the injury to the photosystems reaction centres and by allowing a better utilization of light energy in photochemical processes. All these processes translated into higher photosynthetic and rubisco activities in AM rice plants and improved plant biomass production under salinity.
Collapse
Affiliation(s)
- Rosa Porcel
- Departamento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín (CSIC), Profesor Albareda n° 1, 18008 Granada, Spain
| | - Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Apartado 1095, 41080 Sevilla, Spain
| | - Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Apartado 1095, 41080 Sevilla, Spain
| | - Ricardo Aroca
- Departamento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín (CSIC), Profesor Albareda n° 1, 18008 Granada, Spain
| | - Rosalva Garcia
- Facultad de Estudios Superiores Zaragoza, Universidad Nacional Autónoma, Mexico
| | - Juan Manuel Ruiz-Lozano
- Departamento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín (CSIC), Profesor Albareda n° 1, 18008 Granada, Spain.
| |
Collapse
|
43
|
Delgadillo J, Lafuente A, Doukkali B, Redondo-Gómez S, Mateos-Naranjo E, Caviedes MA, Pajuelo E, Rodríguez-Llorente ID. Improving legume nodulation and Cu rhizostabilization using a genetically modified rhizobia. Environ Technol 2015; 36:1237-1245. [PMID: 25377353 DOI: 10.1080/09593330.2014.983990] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The rhizobia-legume interaction has been proposed as an interesting and appropriate tool for rhizostabilization of soils contaminated with heavy metals. One of the main requirements to use this symbiosis is the availability of tolerant and symbiotically effective rhizobia. The aim of this work was to improve the symbiotic properties of the arsenic-resistant wild-type strain Ensifer medicae MA11 in Cu-contaminated substrates. The copAB genes from a Cu-resistant Pseudomonas fluorescens strain were expressed in E. medicae MA11 under the control of the nifH promoter. The resulting strain E. medicae MA11-copAB was able to alleviate the toxic effect of Cu in Medicago truncatula. At 300 µM Cu, root and shoot dry matter production, nitrogen content, number of nodules and photosynthetic rate were significantly reduced in plants inoculated with the wild-type strain. However, these parameters were not altered in plants inoculated with the genetically modified strain. Moreover, nodules elicited by this strain were able to accumulate twofold the Cu measured in nodules formed by the wild-type strain. In addition, the engineered E. medicae strain increased Cu accumulation in roots and decreased the content in shoots. Thus, E. medicae MA11-copAB increased the capacity of M. truncatula to rhizostabilize Cu, decreasing the translocation factor and avoiding metal entry into the food chain. The plasmid containing the nifH promoter-copAB construct could be a useful biotool for Cu rhizostabilization using legumes, since it can be transferred to different rhizobia microsymbionts of authoctonous legumes growing in Cu-contaminated soils.
Collapse
Affiliation(s)
- Julián Delgadillo
- a Departamento de Microbiología , Facultad de Farmacia, Universidad de Sevilla , Prof. García González, 2, Sevilla 41012 , Spain
| | | | | | | | | | | | | | | |
Collapse
|
44
|
Mesa J, Mateos-Naranjo E, Caviedes MA, Redondo-Gómez S, Pajuelo E, Rodríguez-Llorente ID. Scouting contaminated estuaries: heavy metal resistant and plant growth promoting rhizobacteria in the native metal rhizoaccumulator Spartina maritima. Mar Pollut Bull 2015; 90:150-159. [PMID: 25467875 DOI: 10.1016/j.marpolbul.2014.11.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [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: 09/10/2014] [Revised: 10/31/2014] [Accepted: 11/01/2014] [Indexed: 06/04/2023]
Abstract
Spartina maritima is a native endangered heavy metal rhizoaccumulator cordgrass naturally growing in southwest coasts of Spain, where is used as a biotool to rehabilitate degraded salt marshes. Fifteen bacterial strains were isolated from the rhizosphere of S. maritima growing in the estuary of the Tinto River, one of the most polluted areas in the world. A high proportion of bacteria were resistant towards several heavy metals. They also exhibited multiple plant growth promoting (PGP) properties, in the absence and the presence of Cu. Bacillus methylotrophicus SMT38, Bacillusaryabhattai SMT48, B. aryabhattai SMT50 and Bacilluslicheniformis SMT51 were selected as the best performing strains. In a gnobiotic assay, inoculation of Medicago sativa seeds with the selected isolates induced higher root elongation. The inoculation of S. maritima with these indigenous metal-resistant PGP rhizobacteria could be an efficient method to increase plant adaptation and growth in contaminated estuaries during restoration programs.
Collapse
Affiliation(s)
- J Mesa
- Departamento de Microbiología, Facultad de Farmacia, Universidad de Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain
| | - E Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Avda. Reina Mercedes s/n, 41012 Sevilla, Spain
| | - M A Caviedes
- Departamento de Microbiología, Facultad de Farmacia, Universidad de Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain
| | - S Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Avda. Reina Mercedes s/n, 41012 Sevilla, Spain
| | - E Pajuelo
- Departamento de Microbiología, Facultad de Farmacia, Universidad de Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain
| | - I D Rodríguez-Llorente
- Departamento de Microbiología, Facultad de Farmacia, Universidad de Sevilla, C/Profesor García González 2, 41012 Sevilla, Spain.
| |
Collapse
|
45
|
Cambrollé J, Redondo-Gómez S, Mateos-Naranjo E, Luque T, Figueroa ME. Seasonal ecophysiology of an endangered coastal species, the yellow-horned poppy (Glaucium flavum Crantz). RUSS J ECOL+ 2014. [DOI: 10.1134/s1067413614030023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
46
|
Andrades-Moreno L, Del Castillo I, Parra R, Doukkali B, Redondo-Gómez S, Pérez-Palacios P, Caviedes MA, Pajuelo E, Rodríguez-Llorente ID. Prospecting metal-resistant plant-growth promoting rhizobacteria for rhizoremediation of metal contaminated estuaries using Spartina densiflora. Environ Sci Pollut Res Int 2014; 21:3713-21. [PMID: 24281681 DOI: 10.1007/s11356-013-2364-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Accepted: 11/11/2013] [Indexed: 05/06/2023]
Abstract
In the salt marshes of the joint estuary of Tinto and Odiel rivers (SW Spain), one of the most polluted areas by heavy metals in the world, Spartina densiflora grows on sediments with high concentrations of heavy metals. Furthermore, this species has shown to be useful for phytoremediation. The total bacterial population of the rhizosphere of S. densiflora grown in two estuaries with different levels of metal contamination was analyzed by PCR denaturing gradient gel electrophoresis. Results suggested that soil contamination influences bacterial population in a greater extent than the presence of the plant. Twenty-two different cultivable bacterial strains were isolated from the rhizosphere of S. densiflora grown in the Tinto river estuary. Seventy percent of the strains showed one or more plant growth-promoting (PGP) properties, including phosphate solubilization and siderophores or indolacetic acid production, besides a high resistance towards Cu. A bacterial consortium with PGP properties and very high multiresistance to heavy metals, composed by Aeromonas aquariorum SDT13, Pseudomonas composti SDT3, and Bacillus sp. SDT14, was selected for further experiments. This consortium was able to two-fold increase seed germination and to protect seeds against fungal contamination, suggesting that it could facilitate the establishment of the plant in polluted estuaries.
Collapse
Affiliation(s)
- L Andrades-Moreno
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Avda. Reina Mercedes s/n, 41012, Sevilla, Spain
| | | | | | | | | | | | | | | | | |
Collapse
|
47
|
Redondo-Gómez S, Petenello MC, Feldman SR. Growth, nutrient status, and photosynthetic response to diesel-contaminated soil of a cordgrass, Spartina argentinensis. Mar Pollut Bull 2014; 79:34-38. [PMID: 24462235 DOI: 10.1016/j.marpolbul.2014.01.009] [Citation(s) in RCA: 7] [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] [Received: 08/03/2013] [Revised: 12/16/2013] [Accepted: 01/03/2014] [Indexed: 06/03/2023]
Abstract
The present study was conduced to investigate the tolerance limits of Spartina argentinensis, which occurs in inland marshes of the Chaco-Pampean regions of Argentina, to diesel-contaminated soil. A glasshouse experiment was designed to investigate the effect of diesel fuel from 0% to 3% on growth and photosynthetic apparatus of S. densiflora by measuring gas exchange and photosynthetic pigments. We also performed chemical analysis of plant samples, and determined mycorrhizal index. Tiller and root biomasses declined with increasing diesel fuel concentration, as well as photosynthetic rate (A). Reductions in A could be accounted for by non-stomatal limitations. Mycorrhizal roots of S. argentinensis were reduced by the presence of diesel fuel, but did not affect its nutritional status; in fact, most element concentrations increased with diesel contamination. Despite the negative effect of diesel-contaminated soil, S. argentinensis continued growing, which could be useful management options for phytorremediation of diesel-contaminated soils.
Collapse
Affiliation(s)
- Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Apartado 1095, 41080 Sevilla, Spain.
| | - María C Petenello
- Biología, Facultad de Ciencias Agrarias y CIUNR, Universidad Nacional de Rosario, Argentina
| | - Susana R Feldman
- Biología, Facultad de Ciencias Agrarias y CIUNR, Universidad Nacional de Rosario, Argentina
| |
Collapse
|
48
|
Trotta A, Redondo-Gómez S, Pagliano C, Clemente MEF, Rascio N, La Rocca N, Antonacci A, Andreucci F, Barbato R. Chloroplast ultrastructure and thylakoid polypeptide composition are affected by different salt concentrations in the halophytic plant Arthrocnemum macrostachyum. J Plant Physiol 2012; 169:111-116. [PMID: 22118876 DOI: 10.1016/j.jplph.2011.11.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2011] [Revised: 11/02/2011] [Accepted: 11/03/2011] [Indexed: 05/31/2023]
Abstract
The effect of different external salt concentrations, from 0 mM to 1030 mM NaCl, on photosynthetic complexes and chloroplast ultrastructure in the halophyte Arthrocnemum macrostachyum was studied. Photosystem II, but not Photosystem I or cytochrome b6/f, was affected by salt treatment. We found that the PsbQ protein was never expressed, whereas the amounts of PsbP and PsbO were influenced by salt in a complex way. Analyses of Photosystem II intrinsic proteins showed an uneven degradation of subunits with a loss of about 50% of centres in the 0 mM NaCl treated sample. Also the shape of chloroplasts, as well as the organization of thylakoid membranes were affected by NaCl concentration, with many grana containing few thylakoids at 1030 mM NaCl and thicker grana and numerous swollen thylakoids at 0 mM NaCl. The PsbQ protein was found to be depleted also in thylakoids from other halophytes.
Collapse
Affiliation(s)
- Andrea Trotta
- Dipartimento di Scienze dell'Ambiente e della Vita, Università del Piemonte Orientale,, viale Teresa Michel 11, 15121 Alessandria, Italy
| | | | | | | | | | | | | | | | | |
Collapse
|
49
|
Mateos-Naranjo E, Andrades-Moreno L, Redondo-Gómez S. Tolerance to and accumulation of arsenic in the cordgrass Spartina densiflora Brongn. Bioresour Technol 2012; 104:187-94. [PMID: 22115531 DOI: 10.1016/j.biortech.2011.11.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2011] [Revised: 10/31/2011] [Accepted: 11/01/2011] [Indexed: 05/22/2023]
Abstract
A glasshouse study concerning the halophyte Spartina densiflora was carried out to determine its tolerance and capacity to accumulate As. S. densiflora presented a high tolerance to As-induced stress, since all plants were able to survive at concentrations higher than 6.7 mmol l(-1) As. However, As increment caused a reduction in S. densiflora growth, owing to a decrease in net photosynthetic rate. This reduction was prompted by the adverse effect on the photochemical apparatus and the reduction in the absorption of essential nutrients, which was linked with the reduction in G(s), caused by the alteration of the K/Ca ratio, and with the reduction of photosynthetic pigment and Rubisco carboxilation. Arsenic tolerance was associated with the capacity to accumulate As in its roots (with values up to 2 mg g(-1)) and largely avoid its transport to the leaves, this fact indicating that this species could be useful for arsenic phytostabilization purposes.
Collapse
Affiliation(s)
- Enrique Mateos-Naranjo
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Apartado 1095, 41080 Sevilla, Spain.
| | | | | |
Collapse
|
50
|
Redondo-Gómez S, Andrades-Moreno L, Mateos-Naranjo E, Parra R, Valera-Burgos J, Aroca R. Synergic effect of salinity and zinc stress on growth and photosynthetic responses of the cordgrass, Spartina densiflora. J Exp Bot 2011; 62:5521-30. [PMID: 21841175 PMCID: PMC3223049 DOI: 10.1093/jxb/err234] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [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: 03/09/2011] [Revised: 06/23/2011] [Accepted: 07/05/2011] [Indexed: 05/22/2023]
Abstract
Spartina densiflora is a C(4) halophytic species that has proved to have a high invasive potential which derives from its physiological plasticity to environmental factors, such as salinity. It is found in coastal marshes of south-west Spain, growing over sediments with between 1 mmol l(-1) and 70 mmol l(-1) zinc. A glasshouse experiment was designed to investigate the synergic effect of zinc from 0 mmol l(-1) to 60 mmol l(-1) at 0, 1, and 3% NaCl on the growth and the photosynthetic apparatus of S. densiflora by measuring chlorophyll fluorescence parameters and gas exchange, and its recovery after removing zinc. Antioxidant enzyme activities and total zinc, sodium, calcium, iron, magnesium, manganese, phosphorus, potassium, and nitrogen concentrations were also determined. Spartina densiflora showed the highest growth at 1 mmol l(-1) zinc and 1% NaCl after 90 d of treatment; this enhanced growth was supported by the measurements of net photosynthetic rate (A). Furthermore, there was a stimulatory effect of salinity on accumulation of zinc in tillers of this species. Zinc concentrations >1 mmol l(-1) reduced growth of S. densiflora, regardless of salinity treatments. This declining growth may be attributed to a decrease in A caused by diffusional limitation of photosynthesis, owing to the modification of the potassium/calcium ratio. Also, zinc and salinity had a marked overall effect on the photochemical (photosystem II) apparatus, partially mediated by the accumulation of H(2)O(2) and subsequent oxidative damage. However, salinity favoured the recovery of the photosynthetic apparatus to the toxic action of zinc, and enhanced the nutrient uptake.
Collapse
Affiliation(s)
- Susana Redondo-Gómez
- Departamento de Biología Vegetal y Ecología, Facultad de Biología, Universidad de Sevilla, Apartado 1095, 41080 Sevilla, Spain.
| | | | | | | | | | | |
Collapse
|