Dalia Molina-Romero

• Professor (Associate) at Meritorious Autonomous University of Puebla

Aeromonas es un género de bacterias Gram negativas reportado como patógeno emergente en algunos grupos de la población humana; debido a su capacidad de generar enfermedades infecciosas que afectan el sistema gastrointestinal, el circulatorio y algunos tejidos blandos de individuos inmuno-comprometidos, adultos mayores e infantes. Aeromonas es tambi...

Water purification establishments that lack an adequate quality control system can cause public health problems. The objective of this study was to examine the microbiological quality of water from small purification establishments in the city of Puebla, as well as to determine the existence of Aeromonas sp and Pseudomonas sp bacteria, and to chara...

Azotobacter vinelandii is a motile bacterium that possesses an unusual pattern of peritrichous flagellation for members of the Pseudomonadaceae family. Unlike what has been reported for Pseudomonas spp. FleQ is not the master regulator of motility in A. vinelandii, this role is performed by FlhDC. Other factors involved in the regulation of motilit...

The success of beneficial bacteria in improving the crop growth and yield depends on an adequate plant-bacteria interaction. In this work, the capability of Azospirillium brasilense Sp7, Pseudomonas putida KT2440, Acinetobacter sp. EMM02, and Sphingomonas sp. OF178A to interact with six maize varieties was evaluated by both single-bacterium applica...

Peanut is a plant widely grown around the world. In this work some conditions to successfully germinate peanut seeds were explored. In addition, the ability of Azospirillum brasilense Sp7, Paraburkholderia unamae MTl-641, Pseudomonas putida KT2440, Gluconacetobacter diazotrophicus PAl 5 and Sphingomonas sp. OF178 to adhere to seeds, colonize the rh...

Echeveria is an American genus of approximately 127 species. This genus is distributed from southwest Texas to central and South America, Mexico being the country where most species are concentrated. Many of the species of this genus are cultivated as ornamentals for the beauty of their leaves and flowers. The objective of the present study was the...

Plant growth-promoting bacteria (PGPB) have been extensively studied, because of different mechanisms to perform phytostimulation, as well as the abilities to colonize plants. The number of crop types and hectares of agricultural land, where PGPR are applied is low compared with the total crops or farming area. However, the PGPB application in crop...

Introduction Several plant-beneficial bacteria have the capability to promote the growth of plants through different mechanisms. The survival of such bacteria could be affected by environmental abiotic factors compromising their capabilities of phytostimulation. One of the limiting abiotic factors is low water availability. Materials and Methods I...

Bacteria continually face adverse conditions in the environment, which represent a stressor and restrict their survival. Among these factors, we could mention the following: the limitation of water, fluctuations in temperature, extreme pH values, high salt concentrations, exposure to ultraviolet radiation, and others. The present review focuses on...

Bacteria from rhizosphere have the potential to promote the growth of plants, and could be used as inoculants to increase the crop profitability. However, under drought stress conditions, the number of bacteria associated to seeds could decrease below the minimal number of bacteria required to obtain a positive plant response. At the present work,...

Plant growth-promoting rhizobacteria (PGPR) increase plant growth and crop productivity. The inoculation of plants with a bacterial mixture (consortium) apparently provides greater benefits to plant growth than inoculation with a single bacterial strain. In the present work, a bacterial consortium was formulated containing four compatible and desic...

Bacterial growth in SYP or PY-Ca liquid media for bacteria grown individually or all together. (PDF)

Physicochemical characteristics of the soils used for support in the desiccation experiments. (PDF)

Siderophore production of the four strains chosen for the bacterial consortium. (PDF)

Sequence identity of 16S rRNA from Acinetobacter sp. strain EMM02. (DOCX)

Number of bacteria present in suspensions used for the inoculation of maize. (DOCX)

Colonization of the rhizosphere of maize plants by the bacterial strains. (DOCX)

Flow chart illustrating the identification of Acinetobacter sp. EMM02 by the amplification and sequencing of the gene encoding 16S rRNA. (PDF)

Restriction patterns of the amplified gene encoding the 16S rRNA of the bacterial strains isolated from plants. (PDF)

Adhesion of strains to maize seeds sown in vermiculite. (DOCX)

Strains used in this study. (DOCX)

We describe a method to evaluate bacterial tolerance to air desiccation at 30 °C and 50% relative humidity.

Here we describe two methods for assessing the ability of one bacteria to inhibit the growth of another through the production of antimicrobial compounds. In the first assay, the double agar layer method, only the secreted substances but not the candidate antagonist bacteria interact with the sensitive microorganisms. In the second assay, the simul...

Pseudomonas putida KT2440 is a bacterium able to colonize plant roots and degrade toxic compounds from environment. The aim of present work was to evaluate the ability of this bacterium to promote the growth of autochthonous blue maize under two conditions of temperature: 30 and 40 oC. In this work we observed that the evaluated bacterium promoted...

Artículo de divulgación científica Molina-Romero D., Juárez-Sánchez S. y Muñoz-Rojas J. 2016. Las bacterias, ¿una alternativa para la agricultura amigable? Saberes y Ciencias, Suplemento de la Jornada de Oriente 51: 5.

Este artículo propone como reto agrobiotecnológico el diseñar inoculantes con mayor efectividad para promover el crecimiento de plantas.

It has been established that a decrease in the population of Gluconacetobacter diazotrophicus associated with sugarcane occurs after nitrogen fertilization. This fact could be due to a direct influence of NH4NO3 on bacterial cells or to changes in plant physiology after fertilizer addition, affecting bacterial establishment. In this work, we observ...

Several rhizospheric bacteria with potential to stimulate the plant growth have been isolated from different places and regions of the world. The mechanisms by which rhizospheric bacteria have the ability to stimulate plant growth include phytohormone production, volatiles compounds, antimicrobial compounds (lytic enzymes production, siderophores),...

Algunas plantas como la papa, el frijol y el maíz son altamente consumidos en la dieta del mexicano, sin embargo para que los cultivos lleguen a término, es necesario la utilización de gran variedad de componentes químicos para su crecimiento y protección. Existe otra variedad de plantas llamadas cactáceas, una especie de interés es E. platyacanthu...

Echinocactus platyacanthus es una cactácea globosa, endémica de México, forma parte de la flora de la Reserva de la Biósfera "Tehuacán-Cuicatlán". Actualmente este cactus se encuentra amenazado debido a sus diversos usos, entre los cuales destaca la elaboración de un dulce. El crecimiento de la planta es muy lento, puede llegar a alcanzar una edad...

Burkholderia tropica Mto-293 is a plant grow promoting rhizobacteria that can be immersed in phytostimulation and increase the rate growth in plants, the main of this work was determined if this microorganism can adhere and colonize the corn rhizosphere and if it promoted the plant growth in this model.