Investigation of a Perspective Urban Tree Species, Ginkgo biloba L., by Scientific Analysis of Historical Old Specimens

Kisvarga, Szilvia and Hamarné Farkas, Dóra and Horotán, Katalin and Gyuricza, Csaba and Ražná, Katarína and Kučka, Matúš and Harenčár, Ľubomír and Neményi, András and Lantos, Csaba and Pauk, János and Solti, Ádám and Simon, Edina and Bibi, Dina and Mukherjee, Semonti and Török, Katalin and Tillyné Mándy, Andrea and Papp, László and Orlóci, László (2024) Investigation of a Perspective Urban Tree Species, Ginkgo biloba L., by Scientific Analysis of Historical Old Specimens. PLANTS-BASEL, 13 (11). No. 1470. ISSN 2223-7747

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Abstract

In this study, we examined over 200-year-old Ginkgo biloba L. specimens under different environmental conditions. The overall aim was to explore which factors influence their vitality and general fitness in urban environments and thus their ability to tolerate stressful habitats. In order to determine this, we used a number of different methods, including histological examinations (stomatal density and size) and physiological measurements (peroxidase enzyme activity), as well as assessing the air pollution tolerance index (APTI). The investigation of the genetic relationships between individuals was performed using flow cytometry and miRNA marker methods. The genetic tests revealed that all individuals are diploid, whereas the lus-miR168 and lus-miR408 markers indicated a kinship relation between them. These results show that the effect of different habitat characteristics can be detected through morphological and physiological responses, thus indicating relatively higher stress values for all studied individuals. A significant correlation can be found between the level of adaptability and the relatedness of the examined individuals. These results suggest that Ginkgo biloba L. is well adapted to an environment with increased stress factors and therefore suitable for use in urban areas.

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