In this scientific paper we studied the effects of JA and the combination of JA and ethylenediamine-dio-hydroxyphenyl-acetic acid (EDDHA) on flowering in Lemna minor in axenical cultures. JA enhanced floral induction in L. minor under long-day (LD) conditions. Under LD conditions with LD preculture, a combination of EDDHA and JA had a synergistic effect on the promotion of floral induction. The levels of endogenous JA in different growth stages support our hypothesis that, in addition to previously ascribed functions, JA may regulate floral induction, evocation and floral differentiation.
COBISS.SI-ID: 2457132
A new method for the determination of endogenous jasmonic acid (JA) in Lemna minor extracts using liquid chromatography with fluorescence detection and derivatisation with 9-anthryldiazomethane is described. Derivatives of JA and dihydrojasmonic acid (dhJA) were separated with gradient elution on a C-18 reversed-phase column. The method is selective and yields reproducible results for each compound. Accuracy and precision were improved by using the internal standard dhJA. The specificity and accuracy of the proposed method was confirmed by LC/MS/MS analysis of free JA in Lemna minor extracts.
COBISS.SI-ID: 2281516
It was shown for the first time that probiotic and other lactic bacteria exhibit an antiviral activity in a cell culture model. Pre-incubation of cell monolayers with bacteria reduced viral infectivity up to 60%. All bacteria used prevented binding of VSV to the cell monolayers (direct binding of virus to their surface) as well as viral infection by establishment of the antiviral state in pre-treated cell monolayers. During their growth bacteria produced antiviral substances, as the infectivity of the virus was diminished by 68% when bacterial supernatants were tested.
COBISS.SI-ID: 2467372
The thermogenesis and flowering biology of Colocasia gigantea (Blume) Hook. f. were studied from December 2005 to February 2006 on Espiritu Santo, Vanuatu. The study showed that C. gigantea was a thermogenic species and heat was generated by the male part of the spadix and probably the lower zone of the sterile region. The average maximum temperature was 42.25 ± 0.14 °C during the female phase, and 35.14 ± 0.22 °C, during the male phase.
COBISS.SI-ID: 2618412