István Máthé

• Phd
• Sapientia Hungarian University of Transylvania

Multitude of interacting factors (crop management, climate and land-use change, as well as natural enemies) that impinge upon aphids seemingly drives them towards rapid adaptation [9]. The bacterial community of an individual aphid of a given species and as well as that of aphid species populations may thus play an important, yet undiscovered, role...

The effect of populin extract from black poplar (Populus nigra) on seven different late blight strains was tested under laboratory and field conditions. The growth rate of hyphae was found to be significantly lower in vitro after 3 and 4 v/v% populin applications. Stain M16 was resistant to populin treatment under lab conditions, however. Both 5% a...

Aims We tested whether chemical content of individual Tansy plants influences aboveground arthropod and belowground soil microbial community composition. Methods We use Tansy chemical defence composition as focus for our analysis, given that changes in chemical defence are a dominant mechanism expected to modify aboveground and belowground communi...

A new aerobic betaproteobacterium, strain SA-152T, was isolated from the water of a crater lake. 16S rRNA gene sequence analysis revealed that strain SA-152T belonged to the family Oxalobacteraceae (order Burkholderiales) and was phylogenetically related to Solimicrobium silvestre S20-91T with 97.09 % and to Herminiimonas arsenicoxydans ULPAs1T wit...

A new aerobic alphaproteobacterium, strain SA-279T, was isolated from a water sample of a crater lake. The 16S rRNA gene sequence analysis revealed that strain SA-279T formed a distinct lineage within the family Ancalomicrobiaceae and shared the highest pairwise similarity values with Pinisolibacterravus E9T (96.4 %) and Ancalomicrobiumadetum NBRC...

A novel isolate, strain SA-276T, was isolated from the water of Lake St. Ana, a crater lake which is located in Romania. Phylogenetic analysis based on the 16S rRNA gene revealed that the new strain is a member of the family Rhizobiaceae, showing a high pairwise similarity value (97.65%) to Rhizobium tubonense CCBAU 85046T (= DSM 25379T), Rhizobium...

A new betaproteobacterium, CGI-09(T), was isolated from an activated sludge bioreactor which treated landfill leachate. Based on 16S rRNA gene sequence analysis, the new strain shared the highest pairwise similarity values with members of the order Burkholderiales: Derxia gummosa IAM 13946(T) (family Alcaligenaceae), 93.7 % and Lautropia mirabilis...

A Gram-positive, strictly aerobic, mesophilic bacterium, designated H004T, was isolated from water sample of the hypersaline and heliothermal Lake Ursu, Sovata, Romania. Phylogenetic analysis based on 16S rRNA gene sequence revealed that strain H004T formed a distinct phyletic lineage within the genus Rhodococcus. It shared the highest 16S rRNA gen...

A new betaproteobacterium, CGII-59m2T, was isolated from an activated sludge bioreactor which treated landfill leachate. The 16S rRNA gene sequence analysis revealed that strain CGII-59m2T belonged to the family Alcaligenaceae and shared the highest pairwise similarity values with Parapusillimonas granuli LMG 24012T (97.7%), various Bordetella spec...

A new bacterium, CAI-18bT, was isolated from a bioreactor that treated landfill leachate using an oligotrophic growth medium. Phylogenetic analysis based on the 16S rRNA gene revealed that strain CAI-18bT is a member of the genus Rufibacter, showing 97.1% pairwise similarity value to Rufibacter roseus H359T, 96.4% to Rufibacter tibetensis 1351T, 96...

Winter conditions in aquatic habitats of the temperate zone markedly differ from those present in warmer seasons, nevertheless, relatively scarce information is available on planktonic microbial composition, as sites are not easily accessible and it was supposed traditionally that microbial activity is low during this cold period. Since microorgani...

Naturally occurring and anthropogenic petroleum hydrocarbons are potential carbon sources for many bacteria. The AlkB-related alkane hydroxylases, which are integral membrane non-heme iron enzymes, play a key role in the microbial degradation of many of these hydrocarbons. Several members of the genus Rhodococcus are well-known alkane degraders and...

Supplementary Fig. 1 Selected epifluorescence microscopic images of water samples from Lake Ursu after DAPI staining. Curved cells are marked with arrows. Bar, 10 μm

The effect of populin extract from black poplar (Populus nigra) on late blight was assessed under laboratory and field conditions. The growth rate of hyphae was found to be significantly lower after 1v/v% populin application, and no hyphae growth was detected under 3 and 6v/v% populin application. Populin also reduced the light blight severity on p...

The effect of vertical physico-chemical stratification on the planktonic microbial community composition of the deep, hypersaline and heliothermal Lake Ursu (Sovata, Romania) was examined in this study. On site and laboratory measurements were performed to determine the physical and chemical variables of the lake water, and culture-based and cultiv...

The results of 16S rRNA, catA and gyrB gene sequence comparisons and reasserted DNA-DNA hybridization clearly indicated that Rhodococcus jialingiae Wang et al. 2010 (Wang, Z., Xu, J., Li, Y., Wang, K., Wang, Y., Hong, Q., Li, W.J. & Li, S.P. Int. J. Syst. Evol. Microbiol. 60:378-381, 2010) and Rhodococcus qingshengii Xu et al. 2007 (Xu, J.L., He, J...

In this study a combination of both molecular and biochemical methods have been used to characterize the bacterial microbiota in water and sediment of a saline lake in Transylvania. The physicochemical characterization of the water samples from different lake depths indicated a stratification of the lake that affects the distribution of resident mi...

Nowadays, because of substantial use of petroleum-derived fuels the number and extension of hydrocarbon polluted terrestrial ecosystems is in growth worldwide. In remediation of aforementioned sites bioremediation still tends to be an innovative, environmentally attractive technology. Although huge amount of information is available concerning the...

This paper presents a faunistic survey of the "Lacul Ursu şi Arboretele de pe Sărături" Scientific Reserve and its surroundings. The invertebrate animal species were inventoried in 2008 and 2009, and data on vertebrates were collected from 1990 to 2009. There were identified in total 301 species of animals (118 invertebrates and 184 vertebrates spe...

The paper is dealing with the vascular flora inventory in the surrounding area of the lakes in Sovata. The study territory overlies to the protected area of national interest Lake Ursu Nature Reserve. The aim of the study is to provide an up-to-date systematic checklist of the vascular plant taxa growing in the area. Field surveys were carried out...

Agricultural land use intensification and deforestation are between the most significant drivers of biodiversity loss of terrestrial systems. However, if used in small scale and extensive way (as in traditionally used farmlands), land use may create a heterogeneous landscape that maintains high biodiversity. Here we evaluate the effect of tradition...

Lake Red is one of the saline lakes which were formed as a consequence of salt massif dissolution at the foot of the Gurghiu Mountains (Central Romania) at the end of the nineteenth century. The lake water had approximately 15 % w/v salt content. Phylogenetic diversity of prokaryotes inhabiting the water and sediment of the lake was studied using c...

The main aim of our study is the development of bacterial biopreparates based on organic nitrogen and phosphorus mobilizing microorganisms. In this study we analyzed the nutrient mobilizing ability (cellulase, phytase, lecithinase, alkaline phosphatase and alkaline protease enzyme activities) from organic material of the soil bacteria isolated from...

Since bioremediation is an environmentally friendly, cost effective approach to treat hydrocarbon-contaminated soils, in this study our aim was to develop a bacterial soil inoculant applicable in elimination of aliphatic, simpleand polyaromatic hydrocarbons from soils. To reach our goal two bacterial strains, Pseudomonas fluorescens BBN1 and Rhodoc...

Indigenous hydrocarbon-degrading bacteria play an important role in natural attenuation process of hydrocarbon contaminated soils. Through enzyme systems they catalyze the mineralization of contaminants into non toxic forms, into CO2 and H2O. In order to assess the intrinsic bioremediability is essential to know the microbial community structure, a...

The aim of our study was the isolation and screening of plant and soil bacteria with multiple beneficial effects on plants in order to contribute to the application of these isolates as biofertilizers, an alternative strategy to avoid the application in excess of mineral fertilizers. The beneficial microbes play an important role in the transformat...

This study presents the result of a screening of symbiotic nitrogen fixing bacteria from a specific mountainous grassland habitat lying at 1200 m above sea level in the Ciuc Mountains. A number of 50 bacterial isolates from rhizosphere and from the nodules of 14 specific leguminous plant species are presented and characterized. Pure cultures were o...

Water samples of ten mineral water springs at Miercurea Ciuc (Csíkszereda) region (Romania) were examined during 2005-2006 using cultivation-dependent microbiological methods. The results of standard hygienic bacteriological tests showed that the Hargita Spring had perfect and five other springs had microbiologically acceptable water quality (Zsögö...