Alia Rodriguez

Alia Rodriguez
National University of Colombia | UNAL · Departamento de Biología (Bogotá)

About

143
Publications
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Publications

Publications (143)
Article
Full-text available
A vast majority of terrestrial plants are dependent on arbuscular mycorrhizal fungi (AMF) for their nutrient acquisition. AMF act as an extension of the root system helping phosphate uptake. In agriculture, harnessing the symbiosis can potentially increase plant growth. Application of the AMF Rhizophagus irregularis has been demonstrated to increas...
Article
Full-text available
Water scarcity negatively impacts global crop yields and climate change is expected to greatly increase the severity of future droughts. The use of arbuscular mycorrhizal fungi (AMF) can potentially mitigate the effects of water stress in plants. Cassava is a crop that feeds approximately 800 million people daily. Genetically different isolates of...
Article
Full-text available
Arbuscular mycorrhizae fungi (AMF) are obligate symbionts present in rhizosphere of cocoa plants and their community diversity is modified depending on several factors, such as cadmium (Cd) presence in soil. AMF persistence on Cd natural enriched soils might be an indicator of their tolerance and their potential in biotechnological applications. In...
Preprint
Full-text available
Arbuscular mycorrhizal fungi (AMF) have the potential to increase crop yields and all globally important crops form the mycorrhizal symbiosis. Only a few studies have investigated the impact of introduced AMF on local AMF communities and most studies have only investigated effects of one isolate. We studied the impact on AMF community structure of...
Article
Full-text available
The diversity of arbuscular mycorrhizal fungi (AMF) communities in agricultural systems depends on biotic and abiotic factors as well as on cultural practices. This research aimed to evaluate the diversity of AMF present in an altitudinal transect cultivated with cape gooseberry (Physalis peruviana L.). A set of 13 soil samples from cape gooseberry...
Preprint
The unprecedented challenge to feed the rapidly growing human population can only be achieved with major changes in how we combine technology with agronomy1. Despite their potential few beneficial microbes have truly been demonstrated to significantly increase productivity of globally important crops in real farming conditions2,3. The way microbes...
Article
Full-text available
Las enfermedades “pudrición negra del fruto” y “moniliasis” son reportadas como limitantes en plantaciones de cacao en Colombia. Fueron evaluados los patrones espaciales de incidencia para estas dos enfermedades en un cultivo de cacao durante un monitoreo de trece semanas en campo. Semivariogramas e interpolación kriging fueron usados para analizar...
Article
Full-text available
Evaluación de plantas de cacao en un vivero de la Universidad de La Salle. Foto: J.C. Fernández L. RESUMEN El éxito de las estrategias de expansión de la producción cacaotera en Colombia por cuenta de las nuevas opor-tunidades del mercado requiere entre otros, de producción de plantas de alta calidad. A pesar de que uno de los factores más determin...
Article
Full-text available
Arbuscular mycorrhizal fungi (AMF) and phosphate solubilizing Pseudomonas bacteria (PSB) could potentially interact synergistically because PSB solubilize phosphate into a form that AMF can absorb and transport to the plant. However, very little is known about the interactions between these two groups of microorganisms and how they influence the gr...
Data
Detailed analysis of the soil used in Experiment 3. (DOCX)
Data
Phylogenetic relationships among 63 Pseudomonas reference strains and the 10 strains used in this study and isolated from Andean soils. Strains used in this study shown in green. The Maximum Likelihood tree was inferred from concatenated sequences of two housekeeping genes rpoD and gyrB (1,285 bp). Only bootstrap values greater than 50 are shown. S...
Data
BLAST results for sequences of 4 genes in ten bacterial strains that had been shown to have phosphate solubilizing ability. (XLS)
Data
Characterization of native strains of Pseudomonas sp. in terms of their capacity to solubilize P and produce indol acetic acid (IAA) and indol-related substances in vitro. The statistical analysis was carried out through a one-way analysis of variance (ANOVA) and differences between treatments were determined using the Dunnet’s multiple comparison...
Data
Differing abilities of the 10 bacterial strains to swim, swarm and attach to abiotic surfaces. F ratios in one-way ANOVA were F(9, 20) = 10.21, P ≤ 0.0001; F(9, 30) = 61.48, P ≤ 0.0001; F(9, 30) = 118.98, P ≤ 0.0001. Table shows means value for each variable and each strain followed by the standard error. Different letters in a column denote signif...
Article
Full-text available
Arbuscular mycorrhizal fungi (AMF) occur in the roots of most plants and are an ecologically important component of the soil microbiome. Richness of AMF taxa is a strong driver of plant diversity and productivity, thus providing a rationale for characterizing AMF diversity in natural ecosystems. Consequently, a large number of molecular studies on...
Article
Full-text available
p>Por milenios los agricultores han mejorado sus cultivos utilizando la variación genética y seleccionando las mejores variedades. Hoy nos enfrentamos a un reto sin precedentes: alimentar la creciente población mundial. Así, aumentar los rendimientos de cultivos de importancia global, para la seguridad alimentaria, como la yuca, es crucial. Esta ra...
Article
Full-text available
The global human population is expected to reach ∼9 billion by 2050. Feeding this many people represents a major challenge requiring global crop yield increases of up to 100%. Microbial symbionts of plants such as arbuscular mycorrhizal fungi (AMF) represent a huge, but unrealized resource for improving yields of globally important crops, especiall...
Article
Full-text available
The arbuscular mycorrhizal symbiosis is formed between arbuscular mycorrhizal fungi (AMF) and plant roots. The fungi provide the plant with inorganic phosphate (P). The symbiosis can result in increased plant growth. Although most global food crops naturally form this symbiosis, very few studies have shown that their practical application can lead...
Data
Mean physical and chemical soil properties at the two study sites Yopal and Santana, Colombia. (DOCX)
Article
Dead organic matter (OM) is a major source of nitrogen (N) for plants. The majority of plants support N uptake by symbiosis with arbuscular mycorrhizal (AM) fungi. Mineralization of N is regulated by microfauna, in particular, protozoa grazing on bacteria. We hypothesized that AM fungi and protozoa interactively facilitate plant N nutrition from OM...
Conference Paper
Full-text available
In 2008, over 900 million people (several times the population of the USA) were suffering chronic hunger. Every year, approximately 5 million people die of malnutrition. Of these, almost 3.5 million are below the age of 5 and almost all deaths occur in so-called developing countries. The irony is that enough food is currently produced to feed the w...
Article
Full-text available
Harmonic processes between plant and arbuscular mycorrhyzal fungi (AMF) are required for the symbiosis formation between the two organisms. These processes depend on specific signalling for the plant-fungus recognition, colonisation and bidirectional nutrient exchange. Plants show defence responses against invasive organisms, however they react wea...
Article
Full-text available
It is often assumed that all species of arbuscular mycorrhizal fungi (AMF) have the same function because of the ubiquity of the arbuscular mycorrhizal symbiosis and the fact that all AMF occupy the same plant/soil niche. Despite apparent differences in the timing of evolutionary divergence and the morphological characteristics of AMF from the diff...
Article
Full-text available
La asociación entre Hongo formadores de micorrizas arbusculares (HFMA) y las plantas ha permitido la adaptación de éstas a ecosistemas terrestres, presentándose en más del 80% de las plantas. El hospedero suministra carbohidratos al hongo y éste transporta los nutrientes que la planta requiere. El establecimiento de la simbiosis requiere procesos a...
Article
Full-text available
Oil palm is a significant and developing crop in many developing countries. The introduction of oil palm puts pressure on natural resources because it is often planted in cleared-cut land that previously supported other crops or was forested. This has led to environmental concerns which require attention. Hence it is important that new plantations...
Article
Full-text available
The Colombian blueberry (Vaccinium meridionale Swartz) is a promissory crop for the Andean Region of South America, and the absence of a suitable propagation protocol presents a difficulty introducing it into commercial production. This research was undertaken in order to evaluate the effect of mycorrhizal fungi on rhizogenesis of stem and stolon c...
Article
Full-text available
Morphological and molecular characters were analysed to investigate diversity within isolates of the Glomus claroideum/Glomus etunicatum species group in the genus Glomus. The inter- and intra-isolate sequence diversity of the large subunit (LSU) rRNA gene D2 region of eight isolates of G. claroideum and G. etunicatum was studied using PCR-single s...
Article
Summary • The existence of multiple rRNA sequences within AMF single spores and the high levels of variability found in these symbionts for highly conserved genes with low copy numbers have provoked intense controversy over the genetic structure of the Glomeromycota. Lately, two hypotheses have been proposed to explain the source of such a variatio...