Tomislav Radić

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Essential oils of 25 indigenous populations of Dalmatian sage (Salvia officinalis L.) that represent nearly half of native distribution area of the species were analyzed. Plantlets collected from wild populations were grown in the same field under the same environmental conditions and then sampled for essential-oil analysis. The yield of essential oil(More)
High variability of heterotrophic bacterial (HB; 0.1.10(9)-6.10(9) cells L(-1)), nanoflagellates (HNF; 0.02.10(6)-2.4.10(6) cells L(-1)) and cyanobacterial (CB; 10(6)-700.10(6) cells L(-1)) abundances were observed during approximately monthly measurements at six stations along the transect Po Delta-Rovinj from March 1999 to August 2002. Substantially(More)
The importance of bacterial, phytoplankton and dissolved alkaline phosphatase activity (APA) in the northern Adriatic was investigated during 2006. In surface waters total APA increased from early spring (0.07-0.08 micromol l(-1) h(-1)) to late spring (up to 4.64 micromol l(-1) h(-1)) and remained relatively high during the summer (0.46-0.71 micromol l(-1)(More)
During 2004 and 2006, alkaline phosphatase activity (APA) was measured in the northern Adriatic to establish whether it is an important mechanism for phosphorus recycling in this area, which is poor in orthophosphate (PO4). From May to September, in conditions of exhausted PO4, microbes in upper waters induced high APA (0.41 to 5.55 μmol l–1 h–1) to obtain(More)
Transparent exopolymer particles (TEP) are generated during transformation processes within the non-living organic matter continuum in the seawater. Seasonal dynamics of TEP along the Po River Delta-Rovinj transect was followed during the 3-year period, using a spectrophotometric method of determination of TEP. Relationships between TEP and phytoplankton(More)
The influence of inorganic nutrient concentrations on the ability of bacterioplankton to produce and degrade polysaccharidic transparent exopolymer particles (TEPs) and proteinaceous Coomassie-stained particles (CSPs) was investigated in an 11-day experiment. The dynamics of these particles were followed in prefiltered (1 microm) northern Adriatic seawater(More)
Grapevine (Vitis vinifera L.) and two selected weeds from Mediterranean Croatian vineyards (Plantago lanceolata L. and Tanacetum cinerariifolium (Trevir.) Sch.Bip.) were examined in pot culture experiments, individually or when combined, to see whether multiple hosts influenced the formation of the symbiosis with arbuscular mycorrhizal fungi (AMF). The(More)
The colonisation and diversity of arbuscular mycorrhizal fungi (AMF) on roots of grapevines were investigated in production vineyards located along a 500-km-long stretch of karst along the coast of the Adriatic Sea. AMF communities on roots of grapevines were analysed using temporal temperature gel electrophoresis and sequencing of the 18S and internal(More)
Citrus tristeza virus (CTV) is the most destructive citrus pathogen. Th e knowledge about how its infectivity is accomplished, time in which CTV causes systemic infection aft er transfer to the host plant and the relation between virus invasion and CTV pathogenicity is very scarce. Th e main objective of this study was to analyse whether diff erent CTV(More)
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