Responses to Drought and Salinity in the Endangered Species Ligularia sibirica (L.) Cass

[EN] The negative effects of environmental stress factors on plant distribution and survival are increasing due to climate change and anthropogenic activities. We have analysed some responses to abiotic stress in Ligularia sibirica, a postglacial relict that is critically endangered in Europe. L. sibirica seedlings were subjected to water or salt stress treatments in the greenhouse. After the treatments, plant material was harvested and several growth parameters were measured; leaf contents of common osmolytes, the degree of oxidative stress affecting the plants and the level of antioxidant phenolic compounds were also determined. Both, drought and, especially, salt stress had a negative effect on the growth of L. sibirica plants. Treated plants showed an increase in proline (Pro) and total soluble sugars (TSS) levels, stronger under salt stress. Malondialdehyde (MDA, an oxidative stress biomarker) contents almost doubled, and antioxidant phenolics increased significantly in salt-stressed, but not in water-stressed plants. Pro accumulation can be used as a salt and drought stress biomarker in L. sibirica and, together with TSS, likely contributes to osmotic adjustment under stress. Increase of antioxidant phenolics appears to partly compensate the salt-induced generation of oxidative stressMatei, AN.; Al Hassan, M.; Boscaiu Neagu, MT.; Alexiu, V.; Vicente Meana, Ó. (2016). Responses to Drought and Salinity in the Endangered Species Ligularia sibirica (L.) Cass. BULLETIN OF UNIVERSITY OF AGRICULTURAL SCIENCES AND VETERINARY MEDICINE. 73(2):252-253. doi:10.15835/buasvmcn-hort:12286S25225373

CARPATHIANS ENDEMIC TAXA IN ARGEŞ COUNTY

Endemic plant species are the biogeographic elements why use the delimitation of biogeographical regions. Their presence explains, in the context of identifying phyto-historical factors, distribution of species and certain distribution patterns. Endemic areas, with pronounced as the basic unit of biogeography, indicates those particular geographic region, both in the growth areas and the evolutionary biological processes of speciation.In this study we proposed the following objectives: knowing the list Carpathian endemic species and endemic centers present in Argeş, also, areas of endemism in the Carpathians Mountains of the Argeş County

CARPATHIANS ENDEMIC TAXA IN ARGEŞ COUNTY

Endemic plant species are the biogeographic elements why use the delimitation of biogeographical regions. Their presence explains, in the context of identifying phyto-historical factors, distribution of species and certain distribution patterns. Endemic areas, with pronounced as the basic unit of biogeography, indicates those particular geographic region, both in the growth areas and the evolutionary biological processes of speciation.In this study we proposed the following objectives: knowing the list Carpathian endemic species and endemic centers present in Argeş, also, areas of endemism in the Carpathians Mountains of the Argeş County

IRIS APHYLLA L. SSP. HUNGARICA CRITICALLY ENDANGERED TAXON IN EUROPA

Iris is a genus of 250-300 species of flowering species. It is a genus commonly known as „stânjenei”. It is one of 85 genera of the family Iridaceae. The genus Iris includes 24 species spread across all continents. There are 16 species of Iris in Romania. Iris aphylla ssp. hungarica is a vulnerable plant in Romania. It was found in three types of habitat. One of these (40A0*) is the habitat of Community interest

STUDIES CONCERNING THE IMPORTANCE OF THE FLORIFEROUS SPECIES FOR PARKS AND GARDENS

The study aims the evaluation and scientific documentation for some floral species of spontaneous flora for understanding the ecological requirements and decorative and terapeutical characteristics; choose the most effective and rapid methods for obtaining planting material, to preserve natural biodiversity and their propagation for ornamental and medicinal purposes. The analysed species belonged to Ranunculaceae family (Hepatica transsilvanica Fuss), Iridaceae family (Iris aphylla L, Crocus vernus L), Caryophyllaceae family (Dianthus spiculifollius) and Asteraceae family (Arnica montana L.