Results: 92

Cometabolic biodegradation of quizalofop-p-ethyl by Methylobacterium populi YC-XJ1 and identification of QPEH1 esterase

BACKGROUND: Quizalofop-p-ethyl (QPE), a unitary R configuration aromatic oxyphenoxypropionic acid ester (AOPP) herbicide, was widely used and had led to detrimental environmental effects. For finding the QPEdegrading bacteria and promoting the biodegradation of QPE, a series of studies were carried out. ...

Occurrence of geohelminths in the soil of public squares in Rio Branco, Acre State, Brazilian Western Amazon

Soil contamination by dog and cat feces can become a public health problem due to the transmission of various etiologic agents that cause zoonoses. This study aimed to verify the occurrence of geohelminths in the soil of some public square areas of the municipality of Rio Branco, Acre State, Western Braz...

Next generation sequencing and microbiome's taxonomical characterization of frozen soil of north western Himalayas of Jammu and Kashmir, India

BACKGROUND: Traditionally, microbial genome sequencing has been restrained to the species grown in pure culture. The development of culture-independent techniques over the last decade allows scientists to sequence microbial communities directly from environmental samples. Metagenomics is the study of com...

Microbial communities from arid environments on a global scale: a systematic review

Biol. Res; 53 (), 2020
Abstract Arid environments are defined by the lack of water availability, which is directly related to the mean annual precipitation (MAP), and high values of solar irradiation, which impacts the community composition of animals, plants, and the microbial structure of the soil. Recent advances in NGS tec...

Soil Microbiological Attributes Under Ecological Restoration Technologies in Subtropical Forest

Braz. arch. biol. technol; 63 (spe), 2020
Abstract To accelerate the recovery of degraded environments, it is necessary to use ecological restoration techniques, which require validation according to the ecosystem conditions where are implemented. This work aimed to evaluate soil microbiological attributes under different ecological restoration ...

Effect of Trichoderma spp. on Growth Promotion and Antioxidative Activity of Pepper Seedlings

Abstract One of the main challenges in pepper production is to enhance seed germination energy and germination, and to grow healthy nursery plants with strong root system. Trichoderma species colonize roots as they grow and provide season-long benefits to plants, which is why Trichoderma species are wide...

Detection of Bacillus anthracis and Bacillus anthracis-like spores in soil from state of Rio de Janeiro, Brazil

Mem. Inst. Oswaldo Cruz; 115 (), 2020
BACKGROUND Bacillus anthracis is the aetiologic agent of anthrax, a re-emerging, septicaemic, haemorrhagic and lethal disease that affects humans, domestic ruminants and wildlife. Plasmids pXO1 and pXO2 are attributes that confer pathogenicity to B. anthracis strains. This bacterium was used as biologica...

Paracoccidioides brasiliensis habitat: far beyond armadillo burrows?

Mem. Inst. Oswaldo Cruz; 115 (), 2020
Paracoccidioides spp. isolation from environmental samples is rare and hardly reproducible. Molecular techniques have facilitated the fungal detection. However, it can be still difficult. Some strategies to enhance the capacity of DNA detection have been adopted, including the analysis of soil samples be...

Liming and Nitrogen Fertilization Effects on Soil Microbial Community in Long Term No-till

Braz. arch. biol. technol; 63 (spe), 2020
Abstract Soil management influences organic matter decomposition rates as well soil microbial community functional behavior. No-till (NT) is the most used management system by farmers due to its conservation practices and high productivity. The main objective of this study was to evaluate the impact of s...

Diversity and abundance of denitrifiers during cow manure composting

Rev. argent. microbiol; 51 (3), 2019
Diversity and abundance of the denitrifying genes nirK, nirS and nosZ were investigated in cow manure compost using polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) and real-time quantitative PCR (qPCR), respectively. These three genes were detected in all the stages of the co...