Jesus-Alberto Perez-Romero

Jesus-Alberto Perez-Romero
Universidad de Cádiz | UCA · Department of Biology

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25
Publications
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301
Citations

Publications

Publications (25)
Article
Full-text available
Soil contamination with petroleum derived substance 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 halop...
Article
Full-text available
Biofortification has been widely used to increase mineral nutrients in staple foods, such as wheat (Triticum aestivum). In this study, a new approach has been used by analyzing the effect of inoculation with a plant growth-promoting rhizobacterium (PGPR), namely, Bacillus aryabhattai RSO25 and the addition of 1% (v/v) of organometallic Fe-containin...
Article
Full-text available
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 througho...
Article
Full-text available
Soil salinization is an environmental problem that adversely affects plant growth and crop productivity worldwide. As an alternative to the conventional approach of breeding salt-tolerant plant cultivars, we explored the use of plant-growth-promoting rhizobacteria (PGPR) from halophytic plants to enhance crop growth under saline conditions. Here, w...
Article
A challenge exists in the need to understand plant responses in complex environmental matrixes, such as those predicted by climate change models, being this information essential for species that support important ecosystem functions. A factorial climatic chamber experiment was designed to evaluate the impact of atmospheric CO 2 concentration (400...
Article
Full-text available
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-ass...
Article
Full-text available
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 Atripl...
Article
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...
Article
Salt marshes are worldwide recognized for their unique and important ecological role. According to the Intergovernmental Panel on Climatic Change (IPCC), the frequency and intensity of warming events will rise due to global changes. Halophyte plants, inhabiting salt marshes are known for being highly tolerant to various abiotic stresses, nonetheles...
Article
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...
Article
Full-text available
In a scenario of climate change and growing population, halophyte root microbiota interactions may be a sustainable solution to improve alternative crop production while combating abiotic stress. In this work, seeds of the cash crop halophyte Salicornia ramosissima were inoculated with five different plant growth-promoting rhizobacteria consortia,...
Article
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 phenanthr...
Article
We studied the capacity of extreme halophyte, Arthrocnemum macrostachyum, to desalinize an experimentally-salinized soil under non-leaching conditions. Furthermore, we tested the effect of salt pre-exposure of this species on its phytodesalination capacity. The presence of the halophyte, independently salt pre-exposure, decreased salinity of the sa...
Article
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 510mM NaCl in the halophyte Salicornia ramosissima. In order to ascertain the possible synergetic impact of these factors associate to climatic change in this plan...
Article
Full-text available
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 °...
Article
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 r...
Article
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 growth of Atriplex halimus L. app...
Article
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...
Article
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 activit...
Article
The main aim of this study is to assess the effect of moderate to low level of cotyledon damage (simulated weevils infection) on holm-oak seedling growth and physiological performance under conditions of soil water stress, a recurrent constraint in Mediterranean and other seasonally dry environment. Three levels of artificial damage were applied to...
Article
Estuarine environments are extremely affected by anthropogenic-driven contamination, namely heavy metals. In the recent years, several organisms have been studied to be used as sentinel species providing a wide range of biomarkers for estuarine contamination. Only recently non-traditional biomarkers, such as fatty acids, were included in animal eco...
Article
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 t...
Poster
We hypothesized that bacteria from the halophyte Arthrocnemum macrostachyum play a key role in its high tolerance to excessive salinity. Endophytic bacteria were isolated from phyllosphere of the halophyte. The presence of plant-growth-promoting properties and tolerance towards NaCl was determined. Effects of inoculation on sedes germination and ad...
Article
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...
Article
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...

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Project (1)
Project
We propose the use of the halophyte Arthrocnemum macrostachyum (plant with proven desalination capacity) toghether with rhizosphere microorganisms (bacteria and mycorrhizae) for desalination of agricultural soils. This is a new, low cost and environmentally-friendly technology and will allow in the short term, firstly to recover for plant cultivation saline regions of poor or no productivity and secondly to provide alternative crop production in areas limited by salinity. First of all, microbial biodiversity present in the rhizosphere of A. macrostachyum in their natural habitat will be studied using the PCR-DGGE technique, with two aims: i) determine the abundance of species and ii) perform a metagenomic study of salt tolerance in that environment. Subsequently, the most abundant bacteria in the rhizosphere will be isolated and those that possess an activity to promote plant growth will be selected, to be used, individually or in consortium, for coinoculation, toghether with mycorrhizal fungi, of A. macrostachyum. The purpose is to optimize plant development and therefore its desalination capacity. At the same time, an analytical method based on HPLC (determination of certain osmolytes) will developed as an indicator, in real time, of the desalination capacity of the plant in response to the inoculant. In addition, there will be a comprehensive study of the molecular mechanisms of the plant related to their ability to accumulate and tolerate NaCl. From this study, a gene whose expression is related to the desalination process will be selected. This gene could be used as a molecular marker in real time of the desalination capacity of the plant and may complement the data obtained by measuring the osmolyte. The effect of inoculation on the development and desalination capacity of A. macrostachyum will be checked in agricultural soils (problem soils) with high levels of salt. To verify the effectiveness of soil agricultural restoration, the capacity for growth and the physiological response of two legumes, Medicago sativa (pasture) and Phaseolus vulgaris (grain legume), inoculated with appropriate rhizobia from the collection will be determined.