Acta Botanica Croatica 

About: Acta Botanica Croatica is an academic journal published by De Gruyter Open. The journal publishes majorly in the area(s): Flora & Biology. It has an ISSN identifier of 0365-0588. It is also open access. Over the lifetime, 1151 publications have been published receiving 7920 citations.

Drought-induced biochemical modifications and proline metabolism in Abelmoschus esculentus (L.) Moench.

Abstract: The research was performed to define the effect of water deficit on early growth, biomass allocation and biochemical constituents, proline metabolism and yield of five varieties of bhendi (Abelmoschus esculentus (L.) Moench.) plants. We found that there were significant differences in early growth, dry matter accumulation, biochemical constituents and proline metabolism among the five varieties. The root length, shoot length, total leaf area, fresh weight and dry weight were significantly reduced under drought-induced stress treatment. The proline content and g-glutamyl kinase were significantly enhanced and proline oxidase activities were reduced. Drought stress caused an increase in the free amino acid and glycinebetaine content.

A list of free-living dinoflagellate species in the world’s oceans

Abstract: A checklist of free-living marine dinoflagellates (Dinophyceae) is given. The nomenclature is brought up to date and synonyms are included. The spelling of several taxa is corrected according to the International Code of Botanical Nomenclature (ICBN). A total of 1555 species (117 genera) constitute the free-living marine dinoflagellates, with 135 new species in the period 1993 to 2003. The most numerous genera are: Protoperidinium (264 species), Gymnodinium (173 species), Dinophysis+Phalacroma (104+41 species), Gyrodinium (87 species), Amphidinium (76 species), Histioneis (65 species), Ceratium (64 species) and Gonyaulax (60 species).

Centric diatoms of large rivers and tributaries in Hungary: morphology and biogeographic distribution

Abstract: Centric diatoms of 107 different Hungarian running waters were investigated. Among them the largest was the River Danube, from which more than one hundred plankton samples were analysed by scanning electron microscopy (SEM). Only one sample was analysed from creeks, which were the smallest running waters analysed in this study. There were also channels with slow currents flowing out of rivers or connecting different rivers.In total, 41 centric taxa belonging to 11 genera were found during this study. The average number of taxa found in a single watercourse was 7, the maximum 40 and the minimum 1. Cyclotella meneghiniana was the most frequently encountered species (present in 60% ofsites). Twelve taxa were found in more than 20% of sites, 7 taxa between 5–10% and 6 taxa only in one site.

Checklist of phytoplankton in the eastern Adriatic Sea

Abstract: According to recent insights, the phytoplankton of the eastern Adriatic Sea is composed of 888 determined species. The diatoms were composed of 518 species (330 pennates, 176 centric diatoms), dinoflagellates 254, prymnesiophyceae101, chrysophyceae 2, raphidophyceae 1 and euglenophyceae 2 species. The list is accompanied by data on the general distribution of species in the northern, central and southern part of the eastern Adriatic Sea. The sources of data were samples collected in naturally eutrophic areas (bays, highly stratified karstic estuaries), in areas with antropogenic influence (harbours), as well as in the oligotrophic southern Adriatic: The old published data were supplemented with more recent information from the period 1981-2000.

Phytochemical composition and antimicrobial activity of Satureja montana L. and Satureja cuneifolia Ten. essential oils

Abstract: The phytochemical composition and the antibacterial activity of the essential oils obtained from the aerial parts of two Lamiaceae species, winter savory (Satureja montana L.) and wild savory (Satureja cuneifolia Ten.) were evaluated. Gas chromatography-mass spectrometry (GC-MS) analysis of the isolated oils resulted in the identification of twenty compounds in the oil of S. montana representing 97% of the total oil and 25 compounds of S. cuneifolia, representing 80% of the total oil. Carvacrol was the major constituent of the S. montana oil (45.7%). Other important compounds were the monoterpenic hydrocarbons p-cymene, -terpinene and the oxygenated compounds carvacrol methyl ether, borneol and thymol. Conversely, the oil of S. cuneifolia contained a low percentage of carvacrol and thymol. The major constituents of wild savory oil were sesquiterpenes -cubebene (8.7%), spathulenol, -caryophyllene, followed by the monoterpenic hydrocarbons limonene and -pinene. The screening of the antimicrobial activities of essential oils were individually evalated against nine microorganisms, using a disc diffusion metod. The oil of S. montana exhibited greater antimicrobial activity than the oil of wild savory. Maximum activity of winter savory oil was observed against Escherichia coli, the methicillin-resistant Staphylococcus aureus and against yeast (Candida albicans). The essential oil of S. cuneifolia was also found to inhibit the growth of pathogens such as S. aureus and E. coli. A fungicidal activity against C. albicans and Saccharomyces cerevisiae was also found in both oils.