Phylogenetic relationships of Pterocarya (Juglandaceae) with an emphasis on the taxonomic status of Iranian populations using ITS and trnH-psbA sequence data

Pterocarya fraxinifolia (Lam.) Spach., a relict tree species of the Juglandaceae family, is native to the Great Caucasus, Anatolia, and to the Hyrcanian forests of the southern Azerbaijan and Northern Iran. In this study, the phylogenetic relationship of the species, sampled in selected Iranian populations, and the global biogeography of the genus Pterocarya were addressed. Leaves were collected from 8 to 10 trees from three geographically isolated habitats. The samples were analyzed with nuclear (internal transcribed spacer [ITS] regions) and chloroplast (trnH-psbA) DNA markers. The obtained results were compared and analyzed with the data registered in NCBI GenBank. It is reported that the ITS regions varied from 644 to 652 for Pterocarya genus, but we did not observe polymorphisms for Iranian Pterocarya. The phylogenetic tree divided the Pterocarya genus in three clades: clade 1 grouping exclusively the samples P. fraxinifolia, clearly separated from the East Asiatic taxa; clade 2 that includes the species P. hupehensis and P. macroptera; clade 3 clustering P. stenoptera and P. tonkinensis. Although the Iranian Pterocarya samples and P. fraxinifolia from the Caucasus were in the same clade, they presented two different secondary structures. The Iranian populations showed the maximum genetic distance with P. stenoptera and P. tonkinensis. Our analysis demonstrates that the traditional division of all the six species sampled throughout their distribution area as well as the phylogeny of the genus Pterocarya needs to be reviewed

Progress for research of grape and wine culture in Georgia, the South Caucasus

This communication will provide the latest information about the progress of the “Research Project for the Study of Georgian Grapes and Wine Culture”, managed by the National Wine Agency of Georgia since 2014. Local and foreign institutions continue to work together with the aim of stimulating multidisciplinary scientific research activity on Georgian viticulture and viniculture and to reconstruct their development from Neolithic civilizations to the present. The project is multidisciplinary in nature, merging contributions from archaeology, history, ethnography, molecular genetics, biomolecular archaeology, palaeobotany, ampelography, enology, climatology and other scientific fields

Ecological Concequences of Natural Disasters

Earthquakes and Tsunamis are probably the scariest among the natural disasters that teach us about the forces of nature and their unpredictability. Knowing that there is nothing we can do to prevent the occurrence of an earthquake, we are forced to learn from our own experience. The environment at the place of occurrence of an earthquake is important for the survival of victims and also defines the particular medical and public health needs arising from its specificity. Understandably, the ecological consequences of landslides can be divided into social, As a natural or anthropogenic-natural factor. In each of these groups, we can draw direct and indirect conclusions

Ecological Assessment of Tchitchakhvi Khevi River

The article discusses the assessment of the ecological condition of the Tchitchakhvi Khevi River and its surroundings. Chemical and microbiological research of river water has been carried out. Water samples were taken for analysis in compliance with the requirements of normative documents. The results of the study showed that the degree of pollution of the river is affected by settlements, agricultural lands, faulty sewage system. The microbiological contamination at the site we have studied as a whole can be assessed as, so far, epidemiologically safe, i.e. moderately contaminated, which can be explained at the expense of river self-cleaning