In this study, we designed a microcosm experiment to explore the composition of the bacterial community in the rhizosphere of maize and bulk soil by sequencing the V3-V4 region of the 16S rRNA gene on the Illumina system. 978-1239 OTUs (cut off level of 3%) were found in rhizosphere and bulk soil samples. Rhizosphere shared features with the bulk soil, such as predominance of Acidobacteria, Pro...

A rhizobacterium isolated from groundnut rhizosphere and identified as Alcaligenes faecalis BCCM 2374 produced siderophore during 24 h submerged growth in modified succinic acid medium (SM) prepared in tap water without deferration. For the optimized production of siderophore in the presence of starch and sucrose, the optimum parameters found were as follows: slight acidic pH (5.5), 35C tempera...

The diversity of diazotrophic bacteria in the rhizosphere of Melastoma malabathricum L. was investigated by cloning-sequencing of the nifH gene directly amplified from DNA extracted from soil. Samples were obtained from the rhizosphere and bulk soil of M. malabathricum growing in three different soil types (acid sulfate, peat and sandy clay soils) located very close to each other in south Kalim...

Rhizosphere competence of bacterial inoculants is assumed to be important for successful biocontrol. Knowledge of factors influencing rhizosphere competence under field conditions is largely lacking. The present study is aimed to unravel the effects of soil types on the rhizosphere competence and biocontrol activity of the two inoculant strains Pseudomonas jessenii RU47 and Serratia plymuthica ...

To investigate the influence of carbonate on the formation of goethite and lepidocrocite, ~200 samples were synthesized by oxidizing FeC12 solutions with air/CO2 gas mixtures at ambient temperature and pH 6 and 7. The proportion of lepidocrocite in the lepidocrocite/goethite mixtures (Lp/(Lp+ GO) decreased from 100 to 0% with increasing [HCO~] in solution and with decreasing average oxidation r...

Abstract Purpose Mucilage plays crucial roles in root-soil interactions. Collection systems for maize ( Zea mays L.) use primary and seminal roots of aeroponically-grown seedlings (CS A ), or brace soil-grown plants B ). While each method represents specific plant developmental stages, root types growing (micro-)environments, these factors are rarely considered. It is unclear whether mucilage e...

Shihezi Reclamation Area is located at the southern edge of Junggar Basin, with natural, soil, and climatic conditions unique to production peaches. In turn, peach orchards have accumulated rich microbial resources. As an important taxon soil fungi, diversity community structure changes yeast in on spatial temporal scales are still unknown. Here, we aimed investigate non-rhizosphere rhizosphere...

Trichoderma spp. are common rhizosphere inhabitants widely used as biological control agents and their role as plant growth promoting fungi has been established. Although soil pH influences several fungal and plant functional traits such as growth and nutrition, little is known about its influence in rhizospheric or mutualistic interactions. The role of pH in the Trichoderma-Arabidopsis interac...

The ability of nematode-trapping fungi to colonize the rhizosphere of crop plants has been suggested to be an important factor in biological control of root-infecting nematodes. In this study, rhizosphere colonization was evaluated for 38 isolates of nematode-trapping fungi representing 11 species. In an initial screen, Arthrobotrys dactyloides, A. superba, and Monacrosporium ellipsosporum were...