keyword
MENU ▼
Read by QxMD icon Read
search

soil biology

keyword
https://www.readbyqxmd.com/read/28547294/seasonal-dynamics-of-extraradical-mycelium-and-mycorrhizas-in-a-black-truffle-tuber-melanosporum-plantation
#1
Mikel Queralt, Javier Parladé, Joan Pera, Ana María DE Miguel
Seasonal dynamics of black truffle (Tuber melanosporum) extraradical mycelium as well as the associated mycorrhizal community have been evaluated in a 16-year-old plantation with productive and non-productive trees. Mycelium biomass was seasonally quantified by real-time PCR over two consecutive years and the correlation with environmental variables explored. Extraradical mycelium biomass varied seasonally and between the two consecutive years, being correlated with the precipitation that occurred 1 month before sampling...
May 25, 2017: Mycorrhiza
https://www.readbyqxmd.com/read/28545130/responses-of-absolute-and-specific-enzyme-activity-to-consecutive-application-of-composted-sewage-sludge-in-a-fluventic-ustochrept
#2
Xiao Liu, Kangli Guo, Lin Huang, Zhengyu Ji, Huimin Jiang, Hu Li, Jianfeng Zhang
Composted sewage sludge (CS) is considered a rich source of soil nutrients and significantly affects the physical, chemical, and biological characteristics of soil, but its effect on specific enzyme activity in soil is disregarded. The present experiment examined the absolute and specific enzyme activity of the enzymes involved in carbon, nitrogen, and phosphorus cycles, the diversity of soil microbial functions, and soil community composition in a Fluventic Ustochrept under a maize-wheat rotation system in North China during 2012-2015...
2017: PloS One
https://www.readbyqxmd.com/read/28544806/can-soil-microbial-diversity-influence-plant-metabolites-and-life-history-traits-of-a-rhizophagous-insect-a-demonstration-in-oilseed-rape
#3
Tom Lachaise, Morgane Ourry, Lionel Lebreton, Anne-Yvonne Guillerm-Erckelboudt, Juliette Linglin, Chrystelle Paty, Valérie Chaminade, Nathalie Marnet, Julie Aubert, Denis Poinsot, Anne-Marie Cortesero, Christophe Mougel
Interactions between plants and phytophagous insects play an important part in shaping the biochemical composition of plants. Reciprocally plant metabolites can influence major life history traits in these insects and largely contribute to their fitness. Plant rhizospheric microorganisms are an important biotic factor modulating plant metabolites and adaptation to stress. While plant-insects or plant-microorganisms interactions and their consequences on the plant metabolite signature are well-documented, the impact of soil microbial communities on plant defenses against phytophagous insects remains poorly known...
May 23, 2017: Insect Science
https://www.readbyqxmd.com/read/28540541/morphological-physiological-and-biochemical-responses-of-two-australian-biotypes-of-parthenium-hysterophorus-to-different-soil-moisture-regimes
#4
Ali Ahsan Bajwa, Bhagirath Singh Chauhan, Steve Adkins
Parthenium weed is a problematic invasive species in several countries around the world. Although it is considered to be a highly invasive species within Australia, not all biotypes of parthenium weed exhibit the same ability in regard to aggressive colonization and distribution. Differences among biotypes, particularly in regard to environmental ranges as a possible basis for this variation, have not always been elucidated. To determine whether drought tolerance could be a factor in biotype demographics, we quantified the biological responses of two Australian parthenium weed biotypes known to differ in invasive ability Clermont ("high") and Toogoolawah ("low") to 100, 75 and 50% of soil water holding capacity (WHC)...
May 24, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28534425/evaluation-of-berberine-as-a-natural-fungicide-biodegradation-and-antimicrobial-mechanism
#5
Ying Li, Yi-Ming Yin, Xin-Yue Wang, Hao Wu, Xi-Zhen Ge
Berberine (BBR) is a traditional Chinese medicine which recently was applied as a biological pesticide. Here, we studied the antimicrobial mode of BBR and its impact on soil bacterial diversity. BBR was more effective against fungi than bacteria due to the specific interaction between BBR and glucan. Also, BBR was degraded rapidly in soil, leading to the limited effect on soil bacterial diversity. Collectively, BBR is an environment-friendly pesticide and it is promising in dealing with fungal plant diseases...
May 23, 2017: Journal of Asian Natural Products Research
https://www.readbyqxmd.com/read/28533770/from-vineyard-soil-to-wine-fermentation-microbiome-approximations-to-explain-the-terroir-concept
#6
REVIEW
Ignacio Belda, Iratxe Zarraonaindia, Matthew Perisin, Antonio Palacios, Alberto Acedo
Wine originally emerged as a serendipitous mix of chemistry and biology, where microorganisms played a decisive role. From these ancient fermentations to the current monitored industrial processes, winegrowers and winemakers have been continuously changing their practices according to scientific knowledge and advances. A new enology direction is emerging and aiming to blend the complexity of spontaneous fermentations with industrial safety of monitored fermentations. In this context, wines with distinctive autochthonous peculiarities have a great acceptance among consumers, causing important economic returns...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28528949/synthesis-and-characterization-of-cellulose-silver-nanocomposites-from-bioflocculant-reducing-agent
#7
L Muthulakshmi, N Rajini, A Varada Rajalu, Suchart Siengchin, T Kathiresan
Microbial secreted polymers have high molecular weight due to the presence of repeated units of macromolecules. Some of the polymers are derived from natural resources, including marine and soil microorganisms. In nano-biotechnology people are using different biological agents in the preparation of metal nanoparticles. In this study, the microbial bioflocculant polymer was used as an agent in preparation of silver nanoparticles. The prepared nanoparticles were immobilized into the cellulose matrix. The presence of silver nanoparticles inside the cellulose matrix was confirmed by Scanning Electron Microscopic (SEM) and Transmission Electron Microscopic (TEM) analyses...
May 18, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28528262/stable-isotope-tracing-of-ni-and-cu-pollution-in-north-east-norway-potentials-and-drawbacks
#8
Hana Šillerová, Vladislav Chrastný, Martina Vítková, Anna Francová, Jan Jehlička, Marissa R Gutsch, Jana Kocourková, Paul E Aspholm, Lars O Nilsson, Tore F Berglen, Henning K B Jensen, Michael Komárek
The use of Ni and Cu isotopes for tracing contamination sources in the environment remains a challenging task due to the limited information about the influence of various biogeochemical processes influencing stable isotope fractionation. This work focuses on a relatively simple system in north-east Norway with two possible endmembers (smelter-bedrock) and various environmental samples (snow, soil, lichens, PM10). In general, the whole area is enriched in heavy Ni and Cu isotopes highlighting the impact of the smelting activity...
May 18, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28527035/comparison-of-rhizosphere-properties-as-affected-by-different-bt-and-non-bt-cotton-gossypium-hirsutum-l-genotypes-and-fertilization
#9
Maqshoof Ahamd, Waleed Mumtaz Abbasi, Moazzam Jamil, Muhammad Iqbal, Azhar Hussain, Muhammad Fakhar-U-Zaman Akhtar, Farheen Nazli
Incorporation of genetically modified crops in the cropping system raises the need for studying the effect of these crops on the soil ecosystem. The current study aimed to compare the effect of Bacillus thuringiensis (Bt)- and non-Bt-cotton (Gossypium hirsutum L.) genotypes on rhizosphere properties under fertilized and unfertilized soil conditions. One non-Bt-cotton (IUB 75) and four Bt-cotton varieties (IUB-222, MM-58, IUB-13, FH-142) were sown in a Randomized Complete Block Design (RCBD) in a factorial fashion with three replications under unfertilized (T1) and fertilized (T2 at NPK 310-170-110 kg ha(-1)) soil conditions...
June 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28523826/occurrence-and-abundance-of-ammonia-oxidizing-archaea-and-bacteria-from-the-surface-to-below-the-water-table-in-deep-soil-and-their-contributions-to-nitrification
#10
Lei Zheng, Xue Zhao, Guibing Zhu, Wei Yang, Chao Xia, Tao Xu
Using molecular biology methods (qualitative and quantitative PCR), we determined the occurrence and abundance of ammonia-oxidizing archaea (AOA) and ammonia-oxidizing bacteria (AOB) from a dry inland soil in Basel, Switzerland, and from the riparian zone of Baiyangdian Lake, China. We also determined the contributions of these microorganisms to ammonia oxidization at different depths based on the nitrification rate. The number of archaeal amoA genes (the key functional gene in AOA) was larger than the number of bacterial amoA genes in each sample, suggesting a dominant role for the AOA amoA gene in environments with a low ammonium concentration...
May 19, 2017: MicrobiologyOpen
https://www.readbyqxmd.com/read/28523623/microbial-population-shift-caused-by-sulfamethoxazole-in-engineered-soil-aquifer-treatment-e-sat-system
#11
Ashwinkumar P Rudrashetti, Niti B Jadeja, Deepa Gandhi, Asha A Juwarkar, Abhinav Sharma, Atya Kapley, R A Pandey
The engineered-Soil Aquifer Treatment (e-SAT) system was exploited for the biological degradation of Sulfamethoxazole (SMX) which is known to bio-accumulate in the environment. The fate of SMX in soil column was studied through laboratory simulation for a period of 90 days. About 20 ppm SMX concentration could be removed in four consecutive cycles in e-SAT. To understand the microbial community change and biological degradation of SMX in e-SAT system, metagenomic analysis was performed for the soil samples before (A-EBD) and after SMX exposure (B-EBD) in the e-SAT...
June 2017: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/28523377/mining-lipolytic-enzymes-in-community-dna-from-high-andean-soils-using-a-targeted-approach
#12
Daniel Borda-Molina, José Salvador Montaña, María Mercedes Zambrano, Sandra Baena
Microbial enrichments cultures are a useful strategy to speed up the search for enzymes that can be employed in industrial processes. Lipases have gained special attention because they show unique properties such as: broad substrate specificity, enantio- and regio-selectivity and stability in organic solvents. A major goal is to identify novel lipolytic enzymes from microorganisms living in cold extreme environments such as high Andean soils, of relevance to our study being their capability be used in industrial processes...
May 18, 2017: Antonie Van Leeuwenhoek
https://www.readbyqxmd.com/read/28519901/inhibition-of-soil-microbial-activity-by-nitrogen-based-energetic-materials
#13
Roman G Kuperman, Morgan L Minyard, Ronald T Checkai, Geoffrey I Sunahara, Sylvie Rocheleau, Sabine G Dodard, Louise Paquet, Jalal Hawari
We investigated individual toxicities of nitrogen-based energetic materials (EMs) 2,4-dinitrotoluene (2,4-DNT); 2-amino-4,6-dinitrotoluene (2-ADNT); 4-amino-2,6-dinitrotoluene (4-ADNT); and nitroglycerin (NG) on microbial activity in Sassafras sandy loam (SSL) soil, which has physicochemical characteristics that support "very high" qualitative relative bioavailability for organic chemicals. Batches of SSL soil for basal respiration (BR) and substrate-induced respiration (SIR) assays were separately amended with individual EMs or acetone carrier control...
May 18, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/28511958/selection-of-discriminant-mid-infrared-wavenumbers-by-combining-a-na%C3%A3-ve-bayesian-classifier-and-a-genetic-algorithm-application-to-the-evaluation-of-lignocellulosic-biomass-biodegradation
#14
REVIEW
Abbas Rammal, Eric Perrin, Valeriu Vrabie, Rabih Assaf, Hassan Fenniri
Infrared spectroscopy provides useful information on the molecular compositions of biological systems related to molecular vibrations, overtones, and combinations of fundamental vibrations. Mid-infrared (MIR) spectroscopy is sensitive to organic and mineral components and has attracted growing interest in the development of biomarkers related to intrinsic characteristics of lignocellulose biomass. However, not all spectral information is valuable for biomarker construction or for applying analysis methods such as classification...
May 13, 2017: Mathematical Biosciences
https://www.readbyqxmd.com/read/28511351/effects-of-various-fertilization-regimes-on-abundance-and-activity-of-anaerobic-ammonium-oxidation-bacteria-in-rice-wheat-cropping-systems-in-china
#15
Chao Gu, Huifang Zhou, Qichun Zhang, Yuhua Zhao, Hongjie Di, Yongchao Liang
Anaerobic ammonium oxidation (anammox) is an important process in many marine and paddy ecosystems. However, few studies have reported on the contribution to the nitrogen cycle of anammox and its dynamics in rice-wheat cropping systems with different fertilization regimes. Here, isotope tracing and molecular techniques were used to determine the potential rates of anammox and their association with bacterial abundance, diversity, and activity. Rice-wheat cropping systems at two sites in Jiangsu Province, China were selected and the treatments at each site were: 1) no fertilization (CK), 2) 100% chemical fertilization (CF), 3) pig manure compost plus 50% chemical fertilization (PMCF), and 4) straw plus 100% chemical fertilization (SRCF)...
May 12, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28509939/bioremoval-of-lead-using-pennisetum-purpureum-augmented-with-enterobacter-cloacae-vitpasj1-a-pot-culture-approach
#16
Anamika Das, Priyanka Belgaonkar, Aditya S Raman, Sofia Banu, Jabez W Osborne
Lead is a toxic heavy metal discharged into the ecosystem from various industries. Biological remediation strategies have been effective in the bioremoval of lead. In our current study, a phytobacterial system using Pennisetum purpureum along with lead-resistant bacterium (LRB) was employed for the uptake of lead. The LRB was obtained from lead-contaminated sites. The isolate VITPASJ1 was found to be highly tolerant to lead and was identified as an effective plant growth-promoting bacterium. The 16S rRNA sequencing revealed VITPASJ1 to be the closest neighbour of Enterobacter cloacae...
May 16, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28500873/evaluation-methods-for-assessing-effectiveness-of-in-situ-remediation-of-soil-and-sediment-contaminated-with-organic-pollutants-and-heavy-metals
#17
REVIEW
Biao Song, Guangming Zeng, Jilai Gong, Jie Liang, Piao Xu, Zhifeng Liu, Yi Zhang, Chen Zhang, Min Cheng, Yang Liu, Shujing Ye, Huan Yi, Xiaoya Ren
Soil and sediment contamination has become a critical issue worldwide due to its great harm to the ecological environment and public health. In recent years, many remediation technologies including physical, chemical, biological, and combined methods have been proposed and adopted for the purpose of solving the problems of soil and sediment contamination. However, current research on evaluation methods for assessing these remediation technologies is scattered and lacks valid and integrated evaluation methods for assessing the remediation effectiveness...
May 10, 2017: Environment International
https://www.readbyqxmd.com/read/28499929/reproductive-efficiency-of-entomopathogenic-nematodes-as-scavengers-are-they-able-to-fight-for-insect-s-cadavers
#18
Rubén Blanco-Pérez, Francisco Bueno-Pallero, Luis Neto, Raquel Campos-Herrera
Entomopathogenic nematodes (EPNs) and their bacterial partners are well-studied insect pathogens, and their persistence in soils is one of the key parameters for successful use as biological control agents in agroecosystems. Free-living bacteriophagous nematodes (FLBNs) in the genus Oscheius, often found in soils, can interfere in EPN reproduction when exposed to live insect larvae. Both groups of nematodes can act as facultative scavengers as a survival strategy. Our hypothesis was that EPNs will reproduce in insect cadavers under FLBN presence, but their reproductive capacity will be severely limited when competing with other scavengers for the same niche...
May 9, 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/28499227/organic-carbon-pools-and-soil-biological-fertility-are-affected-by-land-use-intensity-in-mediterranean-ecosystems-of-sardinia-italy
#19
Rosa Francaviglia, Gianluca Renzi, Luigi Ledda, Anna Benedetti
Soil quality is mainly studied from the chemical and physical point of view, whereas soil biochemical and microbiological parameters are relatively more scarcely explored to assess the effect of management practices. This study aimed to evaluate soil organic carbon (SOC) and its pools; soil microbial activity parameters; and the Biological Fertility Index (BFI), in six land uses characteristics of the Mediterranean basin in north-eastern Sardinia. These land uses differed in management intensity and consisted of: tilled vineyard (TV), no tilled grassed vineyard (GV), former vineyards (FV), hay crop and pasture (HC and PA), cork oak forest (CO)...
May 9, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28496196/tapimp2-a-pathogen-induced-myb-protein-in-wheat-contributes-to-host-resistance-to-common-root-rot-caused-by-bipolaris-sorokiniana
#20
Xuening Wei, Tianlei Shan, Yantao Hong, Huijun Xu, Xin Liu, Zengyan Zhang
MYB transcription factors (TFs) have been implicated in various biology processes in model plants. However, functions of the great majority of MYB TFs in wheat (Triticum aestivum L.) have not been characterized. The soil-borne fungal pathogens Bipolaris sorokiniana and Rhizoctonia cerealis are the causal agents of important destructive diseases of wheat. Here, the TaPIMP2 gene, encoding a pathogen-induced MYB protein in wheat, was isolated through comparative transcriptomic analysis, and its defensive role was studied...
May 11, 2017: Scientific Reports
keyword
keyword
61461
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"