| estimation and diversity of phylloplane mycobiota on selected plants in a mediterranean-type ecosystem in portugal. | mediterranean ecosystems have not been consistently investigated as natural habitats for microbes in general, and fungi in particular. here we present the results of a survey of epiphytic mycobiota (filamentous fungi and yeasts) on the phylloplane of selected plants in the arrábida natural park, an ecosystem of mediterranean characteristics in portugal, using conventional culture-dependent isolation methods. leaves from the species acer monspessulanum and quercus faginea (deciduous trees) and ci ... | 2002 | 12375096 |
| assessment of phylloplane yeasts on selected mediterranean plants by fish with group- and species-specific oligonucleotide probes. | a previous culture-dependent survey of phylloplane yeasts from selected mediterranean plants showed that a few species were present in high densities in almost all leaf samples, regardless of the plant type, location or sampling season. however, a few species appeared to be restricted to cistus albidus leaves, namely cryptococcus cistialbidi. here, we describe a culture-independent fish assay to detect and quantify whole yeast cells in leaf washings. after optimization, the technique was used to ... | 2010 | 19817863 |
| antioxidant and anti-quorum sensing potential of acer monspessulanum subsp. monspessulanum extracts. | in this study, anti-quorum sensing, and antioxidant activities, and chemical composition of acer monspessulanum subsp. monspessulanum extracts were evaluated. determination of the antioxidant activity was revealed by dpph radical scavenging activity, the total phenolic content assay, and the β-carotene/linoleic acid assay. the detection of phenolic compounds was determined using rp-hplc. anti-quorum sensing activity and violacein inhibition activity were determined using chromobacterium violaceu ... | 2016 | 27116707 |
| ion-mediated enhancement of xylem hydraulic conductivity in four acer species: relationships with ecological and anatomical features. | the 'ionic effect', i.e., changes in xylem hydraulic conductivity (k(xyl)) due to variation of the ionic sap composition in vessels, was studied in four acer species growing in contrasting environments differing in water availability. hydraulic measurements of the ionic effect were performed together with measurements on the sap electrical conductivity, leaf water potential and vessel anatomy. the low ionic effect recorded in acer pseudoplatanus l. and acer campestre l. (15.8 and 14.7%, respecti ... | 2012 | 23138592 |
| xylem hydraulic properties of roots and stems of nine mediterranean woody species. | we studied the hydraulic architecture and water relations of nine co-occurring woody species in a spanish evergreen oak forest over the course of a dry season. our main objectives were to: (1) test the existence of a trade-off between hydraulic conductivity and security in the xylem, and (2) establish the safety margins at which the species operated in relation to hydraulic failure, and compare these safety margins between species and tissues (roots vs. stems). our results showed that the relati ... | 2002 | 24599365 |