A5051368077- Microbial Community Ecology and Physiology
- Legume Nitrogen Fixing Symbiosis
- Plant-Microbe Interactions and Immunity
- Plant nutrient uptake and metabolism
- Genomics and Phylogenetic Studies
- Soil Carbon and Nitrogen Dynamics
- Mycorrhizal Fungi and Plant Interactions
- Nematode management and characterization studies
- Wastewater Treatment and Nitrogen Removal
- Agronomic Practices and Intercropping Systems
- Water Treatment and Disinfection
- Aquatic Ecosystems and Phytoplankton Dynamics
- Isotope Analysis in Ecology
- Composting and Vermicomposting Techniques
- Environmental DNA in Biodiversity Studies
- Plant Pathogenic Bacteria Studies
- Probiotics and Fermented Foods
- Soybean genetics and cultivation
- Ecology and Vegetation Dynamics Studies
- Plant Pathogens and Resistance
- Plant Diversity and Evolution
- Gut microbiota and health
- Plant tissue culture and regeneration
- Plant and animal studies
- Freshwater macroinvertebrate diversity and ecology
Missouri State University
2017-2024
The University of Texas at Arlington
2012-2014
Texas State University
2007-2009
The Amazon rainforest is the Earth’s largest reservoir of plant and animal diversity, it has been subjected to especially high rates land use change, primarily cattle pasture. This conversion had a strongly negative effect on biological reducing number species homogenizing communities. We report here that microbial biodiversity also responds rainforest, but in manner different from plants animals. Local taxonomic phylogenetic diversity soil bacteria increases after conversion, communities...
Land use change in the Amazon rainforest alters taxonomic structure of soil microbial communities, but whether it their functional gene composition is unknown. We used highly parallel microarray technology GeoChip 4.0, which contains 83,992 probes specific for genes linked nutrient cycling and other processes, to evaluate how diversity, abundance similarity targeted responded forest-to-pasture conversion. also evaluated these parameters were reestablished with secondary forest growth. A...
Soybean root nodules are known to contain a high diversity of both rhizobial endophytes and nonrhizobial (NREs). Nevertheless, the variation these bacteria among different within single plants has not been reported. So far, it is unclear whether selection NREs random process or strictly controlled by host plant favor few specific based on their beneficial influence growth. As well, also unknown if relative frequency consistent varies location size nodule. We assessed microbiomes 193...
ABSTRACT Free-living diazotrophs are diverse and ubiquitous in soil, contributing the nitrogen pool natural ecosystems. The isolation of nitrogen-fixing microorganisms has relied on semisolid nitrogen-free medium enrichment, followed by multiple subculturing steps. These procedures limit diversity recovered isolates. In current study, we investigated three different strategies for free-living using a soil sample from Amazon forest. methods were (i) direct plating solid under 2% O 2...
Cyanobacteria-dominated harmful algal blooms are increasing in occurrence. Many of the taxa contributing to these capable fixing atmospheric nitrogen and should be favored under conditions low availability. Yet, synthesizing nitrogenase, enzyme responsible for fixation, is energetically expensive requires substantial concentrations iron. Phosphorus addition poor streams promote but experimental results so far have been inconclusive, suggesting that other factors may involved controlling this...
An extensive use of chemical fertilizers has posed a serious impact on food and environmental quality sustainability. As the organic biofertilizers can satisfactorily fulfill crop's nutritional requirement, plants require less fertilizer application; hence, is low in residues environment polluted. The agriculture crop residues, being rich source nutrients, be used to feed soil crops after composting practicable approach sustainable waste management instead open-field burning residues. This...
Salinity is one of the major abiotic stresses; a total 3% world’s land mass affected by salinity. Approximately 6.3 million hectares in Pakistan salinity to varying degrees, and most areas are arid semiarid with low annual precipitation. The aim present study identify characterize Bacillus Bacillus-derived bacterial genera from rhizospheric non-rhizospheric soil samples Khewra Salt Mine, Pakistan, using culture-independent -dependent methods. Seven Bacillus-like genera, Bacillus,...
The potential of two Frankia strains to grow saprophytically was studied in nonsterile soil microcosms with ground leaf litter Alnus glutinosa as the sole carbon and nitrogen sources. Strains Ag45/Mut15 ArI3, which represent taxonomic subgroups within host infection group were inoculated alone, or together investigate competition. Their growth analyzed by situ dot-blot hybridization. A significant increase cell numbers filament length observed during first 6 weeks after inoculation for...
The Amazon region is a major tropical forest that being deforested at an alarming rate to create space for cattle ranching and agriculture. Diazotrophs (nitrogen-fixing microorganisms) play important role in supplying soil N plant growth forests. It unknown how diazotrophs respond deforestation whether they can recover secondary forests establish after agriculture abandoned. Using high-throughput sequencing of nifH genes, we characterized the response diazotrophs’ β-diversity identified...
Phyllosphere bacteria are an important determinant of plant growth and resistance to pathogens. However, the efficacy phyllosphere in regulating infection Pseudomonas syringae pv. glycinea (Psg) its influence on soybean physiology is unknown. In a greenhouse study, we assessed bacterial consortium (BC) 13 species isolated from field-grown leaves uninfected deliberately Psg infected plants. We measured density with without application BC. The BC resulted significant reduction cells. also...
The ability of Frankia strains to grow in the rhizosphere a nonactinorhizal plant, Betula pendula, surrounding bulk soil and amended with leaf litter was analyzed 6 weeks after inoculation pure cultures by situ hybridization. Growth responses were related taxonomic position as determined comparative sequence analysis nifH gene fragments an actinomycetes-specific insertion Domain III 23S rRNA gene. Phylogenetic analyses confirmed basic classification host infection groups, allowed further...
Abstract Rice is one of the most important crops for feeding about more than half world’s population. Yield rice crop significantly hampered by various biotic and abiotic factors. Application cost-effective environment-friendly bioinoculant a common practice to combat yield losses in this era. The rhizosphere phyllosphere plants provide specific habitats micro-organisms. In present study, bacterial population dwelling Basmati were explored using metagenomic approach from growing areas...
Bacterial impairment of freshwater systems is a commonly studied global problem. However, studies on the relative distribution bacterial pathogens in different impaired aquatic have been limited. Frequently, are classified by presence fecal indicator bacteria (FIB) and identification sources contamination through microbial source tracking. In this study, we assessed abundance DNA sequences related to potential human along with three watersheds. These watersheds consistently showed high FIB...
Introduction Rice, particularly Basmati rice, holds significant global importance as a staple food. The indiscriminate use of phosphate-based fertilizers during rice production has led to high residual levels these chemicals in soil, impacting soil health and fertility. This study aimed address this challenge by investigating the potential phosphate solubilizing bacteria (PSB) improving fertility boosting growth rice. Methods Using amplicon-based 16S rDNA sequencing, bacterial isolation...