@article{MTMT:36382425, title = {Unveiling lichen diversity on volcanic substrates: A comparative study across mainland Spain}, url = {https://m2.mtmt.hu/api/publication/36382425}, author = {Aragon, Gregorio and Gimenez, Gil Fernando and Negron, Valerie and Rincon, Marta}, doi = {10.1016/j.jaridenv.2025.105455}, journal-iso = {J ARID ENVIRON}, journal = {JOURNAL OF ARID ENVIRONMENTS}, volume = {231}, unique-id = {36382425}, issn = {0140-1963}, abstract = {Volcanic rocks harbor an interesting biota well-adapted to the stressful conditions imposed by the environment. Lichens species, with their remarkable resilience, are the most conspicuous organisms colonizing these ecosystems reflecting higher percentages of volcanic rocks coverage. This study provides a comprehensive analysis of lichen diversity across mainland Spain, focusing on the different locations of the volcanic zones and volcanism type, aiming to investigate differences in species richness, frequency, and functionality in four volcanic zones: central, northeastern, southeastern coastal, and southeastern inland. Fieldwork and literature review were used to compile a dataset of 360 lichen species from 85 localities. The results indicate that regional differences in species composition are driven by location of the volcanic zones. Functional traits such as growth forms, photobiont types, and secondary metabolites exhibit similarities across volcanic zones. At a local scale, differences in lichen composition appear influenced by the chemical composition of volcanic rocks. The findings underscore that despite high species turnover between volcanic zones, functionality remains consistent, with a clear dominance of species developing crustose thalli with green algal photobionts and secondary metabolites offering photoprotection in these harsh environments. This research helps fill the knowledge gap on lichen diversity in the Iberian Peninsula's volcanic regions.}, keywords = {METABOLITES; TOLERANCE; ECOLOGY; COMMUNITIES; RADIATION; Volcanic rocks; lichenicolous fungi; functional traits; growth form; lichen photobiont; Saxicolous lichens}, year = {2025}, eissn = {1095-922X} } @article{MTMT:35752153, title = {Antarctic lichens exhibit diverse photobiont distributions and a complex regulation of non-photochemical quenching}, url = {https://m2.mtmt.hu/api/publication/35752153}, author = {Mishra, Anamika and Vítek, Petr and Barták, Miloš and Mishra, Kumud Bandhu}, doi = {10.1016/j.saa.2025.125810}, journal-iso = {SPECTROCHIM ACTA A}, journal = {SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY}, volume = {332}, unique-id = {35752153}, issn = {1386-1425}, year = {2025}, eissn = {1873-3557} } @article{MTMT:36383205, title = {Photochemical Responses of Parmotrema tinctorum and Usnea barbata to Light Variations in Cerrado Landscapes}, url = {https://m2.mtmt.hu/api/publication/36383205}, author = {Vitorino, Luciana Cristina and Rosa, Marcio and Cruvinel, Barbara Goncalves and Marques, Matheus Mendonca de Souza and Dos, Santos Alex Marcelino and Bessa, Layara Alexandre}, doi = {10.3390/plants14172802}, journal-iso = {PLANTS-BASEL}, journal = {PLANTS-BASEL}, volume = {14}, unique-id = {36383205}, issn = {2223-7747}, abstract = {Epiphytic lichens are vital to tropical biodiversity, their distribution shaped by light. Parmotrema tinctorum and Usnea barbata, common in open Cerrado, endure high radiation, necessitating photoprotection. This study tested the hypothesis that the primary photochemistry of P. tinctorum and U. barbata responds differentially to light conditions across distinct landscapes of the Brazilian Savanna, to the height at which lichens were sampled, and to radiation levels from different components of the visible spectrum. Our results demonstrate that P. tinctorum and U. barbata possess efficient photoprotective mechanisms, such as energy dissipation as heat, which enable their survival in the dry and highly illuminated landscapes of the Brazilian Savanna. In particular, stressful environments such as Cerrado and Cerrado Ralo exhibited high DI0/RC values, leading to lower photochemical performance in lichen thalli. However, U. barbata showed greater resilience to light stress than P. tinctorum, likely due to the presence of antioxidant metabolites such as usnic acid. Lichens sampled at higher stem positions and exposed to elevated levels of photosynthetically active radiation (PAR) dissipated less energy as heat and exhibited lower photochemical performance, suggesting photosystem II (PSII) damage under these conditions. Conversely, when different components of the visible spectrum were analyzed separately, increasing light intensities reduced DI0/RC and enhanced Pi_ABS in the thalli, highlighting photodamage resistance in P. tinctorum and U. barbata. The ability of both species to adapt to high-light environments, combined with their physiological plasticity, supports their broad distribution in these tropical ecosystems.}, keywords = {MECHANISMS; STRESS; FLUORESCENCE; OXYGEN; PHOTOINHIBITION; ENERGY; CHLOROPHYLL FLUORESCENCE; energy dissipation; DISSIPATION; Photobionts; Thalli; excess; Brazilian savannah; VEGETATIVELY REPRODUCING LICHEN}, year = {2025}, eissn = {2223-7747} } @article{MTMT:34894513, title = {Effect of light stress on maximum photochemical efficiency of photosystem II and chloroplast structure in cryptogams Cladonia mitis and Pleurozium schreberi}, url = {https://m2.mtmt.hu/api/publication/34894513}, author = {Dziurowicz, Patrycja and Fałowska, Patrycja and Waszkiewicz, Karolina and Wietrzyk-Pełka, Paulina and Węgrzyn, Michał}, doi = {10.12775/EQ.2024.039}, journal-iso = {ECOLOGICAL QUESTIONS}, journal = {ECOLOGICAL QUESTIONS}, volume = {35}, unique-id = {34894513}, issn = {1644-7298}, abstract = {Lichens and bryophytes are cosmopolitan organisms found in diverse environments with varying sunlight availability. However, excessive light can be a stress factor for both lichens and bryophytes, as it can damage their photosynthetic apparatus, particularly the chlorophyll a and b pigments located in the chloroplasts. The measurement of photosynthetic activity and the use of fluorescence microscopy allows the assessment of the influence of light as a stress factor on the preservation state of the thallus. The main goal of our research was to determine the changes that occur in the photosynthetic activity and structure of chloroplasts of selected species lichen Cladonia mitis (Sandst.) and moss Pleurozium schreberi (Willd. Ex Brid.) under the influence of different light intensity in laboratory conditions: FL - 100% light, RL - 30% maximum light, and NL - natural sunlight. The results of the two-factor analysis of variance (ANOVA) tests showed a variation in the activities of the selected species over time depending on the amount of light energy supplied. It was also demonstrated that soaking lichens increased their photosynthetic activity, whereas in bryophytes, it had the opposite effect, decreasing it. The microscopic results showed that Cladonia mitis showed the lowest level of chloroplast fluorescence in the strongest and reduced light, which coincides with its low level of photosynthetic activity. The mosses exhibited strong fluorescence activity of the chloroplasts, suggesting its significantly higher resistance to light radiation.}, year = {2024}, eissn = {2083-5469}, pages = {1-29}, orcid-numbers = {Dziurowicz, Patrycja/0000-0002-1780-7279; Fałowska, Patrycja/0000-0003-3298-8319; Wietrzyk-Pełka, Paulina/0000-0002-1324-2012; Węgrzyn, Michał/0000-0001-7638-4803} } @article{MTMT:34781425, title = {The Impacts of Sunlight on the Lichen Scots Pine Forest Community}, url = {https://m2.mtmt.hu/api/publication/34781425}, author = {Fałowska, Patrycja and Dziurowicz, Patrycja and Waszkiewicz, Karolina and Wietrzyk-Pełka, Paulina and Węgrzyn, Michał Hubert}, doi = {10.3390/f15040675}, journal-iso = {FORESTS}, journal = {FORESTS}, volume = {15}, unique-id = {34781425}, abstract = {The habitat of the lichen Scots pine forest is currently one of the communities that requires attention and active protection due to its rapid disappearance. In our study, we identified factors that can be modified to preserve this habitat. The primary focus of our research was on the significance of tree height and sunlight in fostering the development of a lichen-rich layer within the lichen Scots pine forest. Additionally, we investigated the environmental factors influencing the presence of specific species of lichens and bryophytes, including those that form communities and those that displace species characteristic of the lichen Scots pine forest community. Our study was conducted in Bory Tucholskie National Park (N-W Poland) using 20 experimental sites and 248 point-frame plots from spring 2021 to winter 2022. Fieldwork involved species surveys, measurements of photosynthetic activity in lichens and bryophytes, and collection of environmental data. Through parametric testing, modeling, and mapping, our main findings confirmed that light availability, influenced by tree height, is a critical factor in maintaining a well-preserved lichen-rich layer and facilitating habitat reintroduction.}, year = {2024}, eissn = {1999-4907}, pages = {675}, orcid-numbers = {Wietrzyk-Pełka, Paulina/0000-0002-1324-2012; Węgrzyn, Michał Hubert/0000-0001-7638-4803} } @article{MTMT:35059731, title = {Concentration Data of (+)-Usnic Acid Enantiomer from Some European and African Samples of Flavoparmelia caperata (L.) Hale (Parmeliaceae, Lichenised Ascomycota) – Results of a Preliminary Study}, url = {https://m2.mtmt.hu/api/publication/35059731}, author = {Farkas, Edit and Kirika, Paul M. and Szabó, Krisztina and Muhoro, Arthur}, doi = {10.5252/cryptogamie-mycologie2024v45a7}, journal-iso = {CRYPTOGAMIE MYCOL}, journal = {CRYPTOGAMIE MYCOLOGIE}, volume = {45}, unique-id = {35059731}, issn = {0181-1584}, year = {2024}, eissn = {1776-100X}, pages = {71-82}, orcid-numbers = {Farkas, Edit/0000-0002-5245-1079} } @article{MTMT:34741626, title = {The algal partnership is associated with quantitative variation of lichen specific metabolites in Cladonia foliacea from Central and Southern Europe}, url = {https://m2.mtmt.hu/api/publication/34741626}, author = {Farkas, Edit and Xu, Maonian and Muhoro, Arthur and Szabó, Krisztina and Lengyel, Attila and Heiðmarsson, Starri and Viktorsson, Elvar Örn and Ólafsdóttir, Elín Soffia}, doi = {10.1007/s13199-024-00982-8}, journal-iso = {SYMBIOSIS}, journal = {SYMBIOSIS}, volume = {92}, unique-id = {34741626}, issn = {0334-5114}, abstract = {Lichen specific metabolites (LSMs) have interesting biological activities and quantitative variations may be present intraspecifically. For example, variations in medullary fumarprotocetraric acid (FA) and cortical usnic acid (UA) were observed in the lichen Cladonia foliacea , but the mechanism of variation is not well understood. The current study aimed to characterise the quantitative variation of FA and UA and to investigate the association between lichen metabolite content and ecological / biological variables. Fungal and algal trees were constructed using fungal (nrITS, RPB2) and algal (nrITS) loci, respectively. Using a chiral chromatographic method, the contents of (-)-UA were determined in 29 C. foliacea specimens and range from 6.88 to 34.27 mg/g dry wt. The FA contents were lower and varied from 1.44 to 9.87 mg/g dry wt. Although the fungal tree showed two well resolved clades, no significant differences of UA or FA contents were found between the two fungal clades. However, a significantly higher UA/FA ratio as well as a unique habitat were found to be associated with specimens which contained the alga Asterochloris lobophora than those specimens associated other Asterochloris algae. Taking all predictive variables into account (i.e. substrate type, elevation, collection season, photobiont identity), the multivariate data analysis indicated that photobiont identity explained most of the variance of LSM contents in C. foliacea . Thus future LSM biosynthetic studies should take the photobiont into consideration when dealing with intraspecific quantitative variation.}, year = {2024}, eissn = {1878-7665}, pages = {403-419}, orcid-numbers = {Farkas, Edit/0000-0002-5245-1079; Xu, Maonian/0000-0002-4346-8020; Lengyel, Attila/0000-0002-1712-6748} } @article{MTMT:34894229, title = {Does the Symbiotic Relationship Between Hydra Viridissima and Photoautotrophic Alga Provide an Evolutionary Advantage in Protecting DNA against Damage by the Cytotoxic or Genotoxic Mode of Action of Environmental Stressors?}, url = {https://m2.mtmt.hu/api/publication/34894229}, author = {Želježić, Davor and Kovačević, Goran and Matijević, Ana and Korać, Petra and Mihalić, Katarina Caput}, doi = {10.1007/s00128-024-03884-z}, journal-iso = {B ENVIRON CONTAM TOX}, journal = {BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY}, volume = {112}, unique-id = {34894229}, issn = {0007-4861}, year = {2024}, eissn = {1432-0800}, orcid-numbers = {Želježić, Davor/0000-0002-8214-0212} } @article{MTMT:34105748, title = {Cryptogamic Biomass in Pannonic Acidic Sand Steppes Subject to Changing Land-Use}, url = {https://m2.mtmt.hu/api/publication/34105748}, author = {Aszalósné Balogh, Rebeka and Farkas, Edit and Tüdősné Budai, Júlia and Lőkös, László and Matus, Gábor}, doi = {10.3390/plants12162972}, journal-iso = {PLANTS-BASEL}, journal = {PLANTS-BASEL}, volume = {12}, unique-id = {34105748}, issn = {2223-7747}, abstract = {Cryptogams, often neglected in vegetation dynamics studies, compose a large part of biomass and contribute to the biodiversity of sandy grasslands. Since the work of Verseghy (1970s), their productivity has not been analyzed in Hungary. We studied the lichen and bryophyte dynamics (hereinafter called cryptogams) at two Eastern Hungarian dry sandy grassland sites. The sites of Corynephorus canescens and of Festuca vaginata dominance, respectively, belonging to the community Festuco vaginatae–Corynephoretum have been monitored. We aimed at (1) quantifying the diversity and biomass of the cryptogamic communities; (2) exploring the cryptogamic response to management changes; and (3) studying the effect of experimental management (fencing) on the cryptogamic assemblages. The sites have been compared in 2013 and 2018, respectively. Forty microplots per site per management have been analyzed in both years. Samples of lichens and bryophytes were hand-sorted, dried and then measured. Fencing has led to increased biomass of cryptogams within a few years. Lichens in general benefited comparatively more from exclosure than bryophytes. The increase in lichen biomass (especially that of Cladonia rangiformis) is clearly due to the over 10-year absence of grazing. The only lichen favored by moderate grazing is the legally protected C. magyarica. Short spells of low-intensity grazing can promote the species richness of cryptogams in the community.}, year = {2023}, eissn = {2223-7747}, orcid-numbers = {Farkas, Edit/0000-0002-5245-1079; Lőkös, László/0000-0001-5301-6426} } @mastersthesis{MTMT:35752209, title = {Természetközeli és szünantróp kriptogám közösségek szerveződése}, url = {https://m2.mtmt.hu/api/publication/35752209}, author = {Aszalósné Balogh, Rebeka}, publisher = {Debreceni Egyetem Juhász‐Nagy Pál Doktori Iskola}, unique-id = {35752209}, year = {2023} } @article{MTMT:34231354, title = {CHANGES IN PHOTOSYNTHETIC ACTIVITY OF THE LICHEN CLADONIA MITIS AND THE MOSS PLEUROZIUM SCHREBERI UNDER ARTIFICIAL HIGH-ENERGY LIGHTING IN LABORATORY CONDITIONS}, url = {https://m2.mtmt.hu/api/publication/34231354}, author = {Dziurowicz, Patrycja and Falowska, Patrycja and Waszkiewicz, Karolina and Wietrzyk-Pelka, Paulina and Wegrzyn, Michal H.}, doi = {10.24425/abcsb.2022.143381}, journal-iso = {ACTA BIOL CRACOV BOT}, journal = {ACTA BIOLOGICA CRACOVIENSIA SERIES BOTANICA}, volume = {64}, unique-id = {34231354}, issn = {0001-5296}, abstract = {Assessment of photosynthetic activity is one of the quick and simple methods of verification whether the studied environmental factors have a stressful effect on photosynthetically active organisms. High-intensity light can be a stress factor that could have a potential impact on the maximum productivity of photosystem II. The purpose of the conducted research was to observe changes in photosynthetic activity of the lichen Cladonia mitis and the bryophyte Pleurozium schreberi exposed to artificial high-energy lighting under laboratory culture conditions. The obtained results showed variability of photosynthetic activity over time, depending on the amount of light energy supplied. C. mitis and P. schreberi at full exposure (light energy: 52.03 W m-2 and photosynthetically active radiation 167.24 mu mol m-2) showed a slow downward trend in photosynthetic activity, while at half the light intensity periodic fluctuations were observed without changes in the controls. Long-term and high-light intensity exposure of photosynthetically active organisms may cause gradual degradation of the photosynthetic apparatus, which in turn leads to cell death. Low values of photosynthetic activity may indicate a situation in which, due to excess light, the rate of photosystem II damage exceeds the rate of its repair. This leads to irreversible damage to the photosynthetic apparatus.}, keywords = {lichens; bryophytes; synthetic activity; Photo; stress factor; High intensity light; 'Bory Tucholskie' National Park}, year = {2022}, eissn = {1898-0295}, pages = {23-33}, orcid-numbers = {Dziurowicz, Patrycja/0000-0002-1780-7279} } @article{MTMT:33077671, title = {The long-term effect of removing the UV-protectant usnic acid from the thalli of the lichen Cladonia foliacea}, url = {https://m2.mtmt.hu/api/publication/33077671}, author = {Veres, Katalin and Sinigla, Mónika and Szabó, Krisztina and Varga, Nóra and Farkas, Edit}, doi = {10.1007/s11557-022-01831-y}, journal-iso = {MYCOL PROG}, journal = {MYCOLOGICAL PROGRESS}, volume = {21}, unique-id = {33077671}, issn = {1617-416X}, abstract = {Terricolous lichens are abundant in semi-arid areas, where they are exposed to high irradiation. Photoprotection is essential for the algae as the photobiont provides the primer carbon source for both symbionts. The UV-protectant lichen metabolites and different quenching procedures of the alga ensure adequate photoprotection. Since the long-term effect of diminishing UV-protectant lichen metabolites is unknown, a major part of lichen secondary metabolites was removed from Cladonia foliacea thalli by acetone rinsing, and the lichens were then maintained under field conditions to investigate the effect on both symbionts for 3 years. Our aim was to determine if the decreased level of UV-protectant metabolites caused an elevated photoprotection in the algae and to reveal the dynamics of production of the metabolites. Photosynthetic activity and light protection were checked by chlorophyll a fluorescence kinetics measurements every 6 months. The concentrations of fumarprotocetraric and usnic acids were monitored by chromatographic methods. Our results proved that seasonality had a more pronounced effect than that of acetone treatment on the function of lichens over a long-term scale. Even after 3 years, the acetone-treated thalli contained half as much usnic acid as the control thalli, and the level of photoprotection remained unchanged in the algae. However, the amount of available humidity was a more critical limiting environmental factor than the amount of incoming irradiation affecting usnic acid production. The lichenicolous fungus Didymocyrtis cladoniicola became relatively more abundant in the acetone-treated samples than in the control samples, indicating a slight change caused by the treatment.}, year = {2022}, eissn = {1861-8952}, orcid-numbers = {Sinigla, Mónika/0000-0003-4366-9292; Varga, Nóra/0000-0001-9620-8858; Farkas, Edit/0000-0002-5245-1079} }